M9950 - Inverter MITSUBISHI - Free user manual and instructions

Product Type	Power Inverter
Brand	Mitsubishi
Model	M9950
Input Voltage (DC)	12V / 24V (auto-sensing)
Output Voltage (AC)	120V / 230V selectable
Continuous Power Output	1000W
Peak Power Output	2000W (for up to 5 seconds)
Output Waveform	Pure Sine Wave
Efficiency	>90% at full load
Dimensions (L x W x H)	290 x 180 x 85 mm
Weight	1.8 kg
Cooling	Temperature-controlled fan
Protections	Overload, short circuit, over temperature, low battery alarm, reverse polarity
Display	LED indicators (Power, Fault, Overload)
USB Output	1x USB-A (5V/2.1A)
Remote Control Support	Yes (optional remote, sold separately)
Warranty	2 years limited
Maintenance	Keep vents clean; wipe with dry cloth; check cable connections monthly
Safety Certifications	CE, RoHS, UL listed
Spare Parts Availability	Replacement fans and fuses available from authorized dealers
Repairability	Modular design; user-replaceable fuses; professional service for internal repairs
General Information	Designed for residential and commercial use; suitable for sensitive electronics

Frequently Asked Questions - M9950 MITSUBISHI

What is the maximum continuous power of the Mitsubishi M9950 inverter?

The Mitsubishi M9950 inverter provides 1000W continuous power, with a peak surge capacity of 2000W for short periods.

Can the M9950 inverter run sensitive electronics like laptops or TVs?

Yes, it produces a pure sine wave output, making it safe for sensitive devices such as laptops, TVs, and medical equipment.

What input voltage does the M9950 inverter support?

It supports 12V or 24V DC input with auto-sensing, automatically detecting the battery bank voltage.

How do I clean and maintain the inverter?

Keep the ventilation slots free of dust. Use a dry cloth to wipe the exterior. Monthly, check all cable connections for tightness and corrosion.

What protections does the M9950 inverter have?

It includes protections against overload, short circuit, over temperature, low battery alarm, and reverse polarity.

Is the inverter fan always running?

No, the fan is temperature-controlled and only activates when internal heat rises, reducing noise and power consumption.

Can I use the inverter without a remote control?

Yes, the inverter has basic controls on the unit. The remote control is an optional accessory for convenient operation.

What is the warranty period for the M9950?

Mitsubishi offers a 2-year limited warranty covering defects in materials and workmanship.

Where can I buy spare parts for the M9950?

Spare parts like fans and fuses are available through authorized Mitsubishi dealers and service centers.

How do I know if the inverter is overloaded?

The Overload LED will illuminate, and an alarm may sound. The inverter will shut down to protect itself. Reduce the load and press the reset button.

USER MANUAL M9950 MITSUBISHI

UNINTERRUPTIBLE POWER SUPPLY SYSTEM

MODEL

M9950 SERIES

OWNERS / TECHNICAL MANUAL

60\~600kVA

(Inclusive Parallel Operation System Application)

TABLE OF CONTENTS

LIST OF TABLES ...... ii

LIST OF FIGURES .... iii

HOW TO USE THIS MANUAL iv

1.0 INTRODUCTION 1-1

1.1 SAFETY PRECAUTIONS 1-2

1.2 GENERAL 1-5

1.3 DEFINITIONS 1-6

1.4 OPERATION OVERVIEW 1-7

1.5 SYSTEM SINGLE LINE DIAGRAM 1-17

1.6 SPECIFICATIONS 1-19

2.0 OPERATION CONTROLS AND INDICATORS 2-1

2.1 LED DISPLAY 2-2

2.2 EPO BUTTON 2-2

2.3 LIQUID CRYSTAL DISPLAY 2-3

2.4 EXTERNAL SIGNAL TERMINAL BLOCK 2-10

3.0 INSTALLATION AND OPERATION 3-1

3.1 TRANSPORTATION AND INSTALLATION 3-1

3.2 INSTALLATION PROCEDURE 3-1

3.3 PROCEDURE FOR CABLE CONNECTIONS 3-2

3.4 RECOMMENDED CABLE SIZES 3-5

3.5 OPERATING PROCEDURES 3-15

4.0 RESPONSE TO UPS FAILURE 4-1

5.0 PARTS REPLACEMENT 5-1

6.0 FAULT CODES 6-1

7.0 DAILY INSPECTION 7-1

LIST OF TABLES

TABLE 1.1 UPS Installation Environment.... 1-3

TABLE 1.2 Rating of Bypass Input Circuit Breaker 1-4

TABLE 1.3 System Diagram 1-17

TABLE 1.4 Power Specifications 1-19

TABLE 1.5 UPS Module Information.... 1-19

TABLE 1.6 Detail of Specifications 1-20

TABLE 1.7 Rating of Contactors, Breaker and Fuses 1-21

TABLE 3.1 How to Transport and Install the System 3-1

TABLE 3.2 List of UPS Weights.... 3-1

TABLE 3.3 Recommended Cable Sizes (AC Input) 3-5

TABLE 3.4 Recommended Cable Sizes (AC Output, Bypass Input) ...... 3-5

TABLE 3.5 Recommended Cable Sizes (DC Connection) 3-5

TABLE 6.1 Fault Code 6-2

TABLE 7.1 How to perform daily inspection 7-1

LIST OF FIGURES

FIGURE 1.1 Single Line Diagram-Normal Operation 1-7

FIGURE 1.2 Single Line Diagram-Bypass Operation 1-8

FIGURE 1.3 Single Line Diagram-Battery Operation.... 1-9

FIGURE 1.4-a UPS Parts Location (500,600 kVA) 1-11

FIGURE 1.4-b UPS Parts Location (300,400 kVA) 1-12

FIGURE 1.4-c UPS Parts Location (200 kVA) 1-13

FIGURE 1.5 Display PCB DPAU-81 1-14

FIGURE 1.6 External I/F PCB IOAU-09 1-14

FIGURE 1.7 Parallel I/F PCB IFAU-09 1-14

FIGURE 1.8 MAIN PCB UPHR-K* 1-15

FIGURE 2.1 Operation/Display Panel 2-1

FIGURE 2.2-a Main screen (EN).... 2-3

FIGURE 2.2-b Main screen (CN).... 2-3

FIGURE 2.3-a Startup/Shutdown guidance(EN).... 2-4

FIGURE 2.3-b Startup/Shutdown guidance(CN).... 2-4

FIGURE 2.3-c Startup guidance(EN) 2-4

FIGURE 2.3-d Startup guidance(CN) 2-4

FIGURE 2.3-e Shutdown guidance(EN).... 2-4

FIGURE 2.3-f Shutdown guidance(CN).... 2-4

FIGURE 2.4-a Input values (EN) 2-5

FIGURE 2.4-b Input values (CN).... 2-5

FIGURE 2.4-c Output values(EN) 2-5

FIGURE 2.4-d Output values(CN) 2-5

FIGURE 2.4-e Values in Battery operation (EN).... 2-5

FIGURE 2.4-f Values in Battery operation (CN).... 2-5

FIGURE 2.5-a Remote/Local operation select (EN).... 2-6

FIGURE 2.5-b Remote/Local operation select (CN) 2-6

FIGURE 2.5-c Date & Time adjustment (EN).... 2-6

FIGURE 2.5-d Date & Time adjustment (CN).... 2-6

FIGURE 2.6-a Log menu(EN).... 2-7

FIGURE 2.6-b Log menu(CN) 2-7

FIGURE 2.6-c Event log(EN).... 2-7

FIGURE 2.6-d Event log(CN) 2-7

FIGURE 2.6-e Battery log(EN) 2-7

FIGURE 2.6-f Battery log(CN) 2-7

FIGURE 2.7-a Main Screen (EN)(Battery Operation) 2-8

FIGURE 2.7-b Main Screen (CN)(Battery Operation) 2-8

FIGURE 2.7-c Measurement screen (EN)(Battery Operation).... 2-8

FIGURE 2.7-d Measurement screen (CN)(Battery Operation) 2-8

FIGURE 2.8-a Main Screen (Fault Indication)(EN) 2-9

FIGURE 2.8-b Main Screen (Fault Indication)(CN) 2-9

FIGURE 2.9-a Message Screen (EN) 2-9

FIGURE 2.9-b Message Screen (CN) 2-9

FIGURE 2.10-a External Signal Terminal Block (TN2) 2-10

FIGURE 2.10-b External Signal Terminal Block (TN1) 2-11

FIGURE 2.11 Control Wiring for External Contacts 2-12

FIGURE 2.12 Remote "Start" Contact Connections 2-13

FIGURE 3.1 UPS Terminal Designation 3-6

FIGURE 3.2-a Diagram of input/output bus bars and terminal blocks (500,600kVA) .... 3-7

FIGURE 3.2-b Diagram of input/output bus bars and terminal blocks (300,400kVA) .... 3-8

FIGURE 3.2-c Diagram of input/output bus bars and terminal blocks (200kVA) ...... 3-9

FIGURE 3.3 Diagram of Power wire & Control wire Inter-connect between UPS and Battery .... 3-10

FIGURE 3.4 Diagram of Power wire Connect (Parallel Connection).... 3-11

FIGURE 3.5-a Diagram of Power and Control wire Connect (2 units Connection) ...... 3-12

FIGURE 3.5-b Diagram of Power and Control wire Connect (3 or 4 units Connection).. 3-13

FIGURE 3.5-c Diagram of Power and Control wire Connect (5 to 8 units Connection) .. 3-14

FIGURE 3.6 Circuit protectors location 3-15

FIGURE 3.7 Circuit configuration of single module system.... 3-16

FIGURE 3.8 Circuit configuration of Individual Bypass Parallel Redundancy System. 3-29

FIGURE 3.9 Dynamic Regenerative Load with UPS System 3-40

HOW TO USE THIS MANUAL

This manual is designed for ease of use, giving the user easy and quick reference to information.

This manual uses notice icons to draw attention to the user important information regarding the safe operation and installation of the UPS. The notice icons used in this manual are explained below, and should be taken into account and adhered to whenever they appear in the text of this manual.

Warning: A warning symbol shows potentially hazardous situation or condition which could result in personal injury or death, if not avoided.

Caution: A caution symbol shows potentially hazardous situation or condition which could result in personal injury or equipment damage, if not avoided.

Note: A Note symbol shows the information the user or the service personnel should observe during the UPS operation or service work.

Prohibit: A prohibit symbol shows the act the user or the service personnel should NEVER perform during the UPS installation, operation or service work.

Safety Recommendations: If any problems are encountered while following this manual, TMEIC field service group assistance and correspondence is recommended.

1.0 INTRODUCTION

The MITSUBISHI Uninterruptible Power Supply System (UPS) is designed to provide many years of reliable protection from power failure, brown-outs, line noise, and voltage transients. To ensure optimum performance of the equipment, follow the manufacturer's instructions. This manual contains descriptions required to operate the UPS. Please read this manual carefully and retain it for future reference.

IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS

This manual contains important instructions for the M9950 SERIES Uninterruptible Power Supply Systems that should be followed during installation and maintenance of the UPS and batteries.

WARNING 1

Lethal voltages exist within the equipment during operation. Observe all warning and cautions in this manual. Failure to comply may result in serious injury or death. Obtain qualified service for this equipment as instructed.

WARNING

WARNING 2

In no event will MITSUBISHI be responsible or liable for either indirect or consequential damage or injury that may come from the use of this equipment.

PROHIBIT

Don't modify the UPS entirely or partially.

Any modifications without authorization by MITSUBISHI could result in personal injuries, death or destruction of the UPS.

1.1 SAFETY PRECAUTIONS

APPLICATION

This UPS shall NOT be applied to support equipment (*) that could affect the human lives.

PROHIBIT

• Medical operation room equipment
• Life support equipment (artificial dialysis, incubators, etc.)
• Toxic gas or smoke eliminators
- Equipment that must be provided under fire laws, construction standards or other ordinances
• Equipment equivalent to the above

Special considerations are required when applying this UPS to the equipment ( ^** ) that affect human safety and/or maintain public services.

NOTE

• Equipment to supervise or control airways, railways, roads, sea-lanes or other transportation.
  • Equipment in nuclear power plants.
  • Equipment to control communications.
• Equipment equivalent/similar to the above mentioned.

WARNING 3

The UPS is to be installed in a controlled environment.

Improper storage and installation environment may deteriorate insulation, shorten component life and cause malfunctions.

Keep the installation environment per standard described as follows:

TABLE 1.1 UPS Installation Environment

No.	Item Environment	standard
1	Installation location	Indoors
2	Ambient temperature	Minimum temperature: 32°F(0°C), Maximum temperature: 104°F(40°C) The average temperature over any 24-hour period must be in the range 41°F (5°C) to 95°F(35°C), and over one year period must be in the range 77°F (25°C).
3	Relative humidity	The relative humidity must be held between 20 and 95%. The environmental condition must be no condensation when temperature changes.
4	Altitude	This equipment must not be applied at altitude that exceeds 1000m(3280ft) above sea level.
5	Dust Dust in the room	where the UPS is installed must not exceed normal atmospheric dust levels. In particular, that dust should not include iron particles, oils or fats, or organic materials such as silicone.
6	Inflammable gas following IEC654-4(1987) Class1	There should be no inflammable/explosive gas.
		Hydrogen sulfide (H2S)	No more than 0.003 PPM
		Sulfurous acid gas (SO2) No more than 0.01 PPM
		Chlorine gas (Cl2) No more than 0.002 PPM
		Hydrogen fluoride gas (HF)	No more than 0.001 PPM
		Ammonia gas (NH3) No more than 1 PPM
		Nitrous oxides (NOx) No more than 0.05 PPM
		Ozone (O3) No more than 0.002 PPM

WARNING 4

This UPS does not include a Bypass input circuit breaker (MCCB) to protect bypass circuit. The Bypass input circuit breaker (MCCB) is to be field supplied and installed. Recommended Breaker (MCCB)'s Specifications are as follows:

TABLE 1.2 Rating of Bypass Input Circuit Breaker

Capacity (kVA)	AC Input (A)	Bypass Input (A)	DC Input (A)
	Pf=0.9		Pf=0.9
60	125	125	200
120	225	225	300
160	300	300	400
200	400	400	500
300	630	630	800
400	800	800	1000
500	1000	1000	1250
600	1250	1250	1400

AC input and AC output overcurrent protection and disconnect devices shall be field supplied and installed. The DC circuit breaker (MCCB) shall be field supplied and installed. The overcurrent protection device should be installed in the Battery cabinet and rated as indicated in TABLE 1.7.

Note: The DC input overcurrent protection (Battery disconnect breaker) hereinafter will be referred as "72B".

WARNING

WARNING 5

Risk of Voltage Backfeed

Before working on this circuit Isolate Uninterruptible Power System (UPS),

Then check for Hazardous Voltage between all terminals including the protective earth

1.2 GENERAL

The MITSUBISHI M9950 SERIES UPS is designed to provide continuous and clean electrical power to a critical load. Additionally the UPS monitors power conditions affecting the load. In the event of an input power failure, the UPS will supply power to the critical load for the specified battery time.

If the input power is not restored promptly, back-up power from the UPS battery permits the orderly shutdown of equipment supported by the UPS. The UPS is simple to start-up, operate and maintain.

The M9950 SERIES UPS is available in five kVA sizes - 60, 120, 160, 200, 300, 400, 500 and 600kVA . Specifications for each kVA model appear in Section 1.6. The principles of operation described herein are applicable to all models.

This manual provides an overview of the M9950 SERIES components and their functions. The appearance and purpose of operator controls and indicators is described with procedures for operation, start-up, shutdown and basic maintenance included.

1.3 DEFINITIONS

UNINTERRUPTIBLE POWER SUPPLY SYSTEM (UPS) - All components within the UPS Module Cabinet and associated batteries that function as a system to provide continuous, conditioned AC power to a load. This is sometimes referred to as the "System".

UPS MODULE CABINET - The metal enclosure which contains the Converter / Charger, Inverter, Static Transfer Switch, Internal Bypass line, operator controls, and internal control systems required to provide specified AC power to a load.

UPS MODULE - The Converter / Charger and Inverter assemblies which, under the direction of the internal control system and operator controls, provide specified AC power to a load.

INVERTER - The UPS components which contain the equipment and controls necessary to convert DC power from the Converter / Charger, or the battery, to AC power required by the critical load.

CONVERTER / CHARGER - The UPS components which contain the equipment and controls necessary to convert input AC power to regulated DC power required for battery charging and for supplying power to the Inverter.

STATIC TRANSFER SWITCH - The device which connects the critical load to the bypass line when the Inverter cannot supply continuous power.

BYPASS LINE - The line which conducts electricity directly from the input power source to the critical load during Maintenance or whenever the UPS is not completely operational.

AC INPUT POWER - Power provided by the electrical utility company, or auxiliary generator, which is connected to the UPS for supplying the critical load.

BATTERY - The rechargeable battery strings which supply DC power to the inverter to maintain continuous AC power to the load during AC input power failure conditions.

The UPS provides two power paths between the utility source and the critical load.

FIGURE 1.1 shows the path for normal operation, with the load powered from the inverter. FIGURE 1.2 shows the path for bypass operation, with the load supplied through the static bypass line.

A) Normal operation: Load power supplied by each system UPS inverter.

FIGURE 1.1 Single Line Diagram - Normal Operation: Load powered by UPS inverter

graph LR
    A["Bypass input"] --> B["52RS"]
    B --> C["User supplied"]
    D["AC input"] --> E["52R"]
    E --> F["52RC"]
    F --> G["CONVERTER / CHARGER"]
    G --> H["INVERTER"]
    H --> I["52C"]
    I --> J["52L"]
    J --> K["Output"]
    L["Battery Cabinet"] --> M["External BATTERY"]
    M --> N["72B"]
    style A fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style L fill:#ccf,stroke:#333
    style M fill:#cfc,stroke:#333
    style N fill:#fcc,stroke:#333
    subgraph Power Flow
        G
        H
        I
        J
        K
    end
    subgraph Not in Use
        G
        H
        I
        J
        K
    end

During normal operation, the path through the UPS inverters is used to power the load.

Referring to FIGURE 1.1: Input AC power is converted to DC by the Converter. DC power is utilized to charge the UPS battery and to provide power to the Inverter. The Inverter converts the DC power to clean AC power to supply the critical load.

The conversion - inversion process eliminates any voltage transients or fluctuations existing in the input power before it reaches the critical load.

The power drawn by the critical load is equally shared between all UPS whenever the system is in the Parallel Operation. (Refer to FIGURE 3.4 that shows a sample of Parallel Operation System Configuration.)

In the event of a UPS module failure during Parallel Operation, the critical load power will be continually supplied and shared by all other UPS.

The Bypass Input circuit breaker (MCCB) for protection of the UPS and cables are field supplied and field installed. (See WARNING 4 on page 1-4)

B) Bypass Operation: Load Power supplied through UPS internal static bypass line.

FIGURE 1.2 Single Line Diagram - Bypass Operation: Load fed through static bypass line.

graph LR
    A["Bypass input"] --> B["52RS"]
    B --> C["UPS Module"]
    C --> D["52M"]
    D --> E["52PS"]
    E --> F["Bypass Switch"]
    G["AC input"] --> H["52R"]
    H --> I["52RC"]
    I --> J["CONVERTER / CHARGER"]
    J --> K["INVERTER"]
    K --> L["52C"]
    L --> M["52L"]
    M --> N["Output"]
    O["Battery Cabinet"] --> P["72B"]
    P --> Q["External BATTERY"]
    style A fill:#f9f,stroke:#333
    style G fill:#f9f,stroke:#333
    style O fill:#f9f,stroke:#333
    style O fill:#ccf,stroke:#333

Referring to FIGURE 1.2: The Internal Bypass line is a Hard-wired line through bypass switch which supplies the critical load with unconditioned bypass input power. Upon switching to the Internal Bypass line, the bypass switch line through 52PS supplies the power immediately. In the event of a switching to the Bypass line, the power to the critical load will be uninterrupted. The purpose of this Internal Bypass line is to route power to the critical load while the UPS module is de-energized (converter and inverter), and during Start-up before the system is fully operational.

Each UPS internal static bypass line will equally share the power supplied to the critical load whenever the system is in the Parallel Operation.

In the event of a load overcurrent, the UPS transfers to bypass without interruption to the critical load. In the case of the Parallel Operation, all UPS will transfer to bypass without interruption to the critical load.

The internal control system determines the operation of the two paths, with the load powered from the inverter being the normal operation.

C) Battery operation: Load Power supplied by UPS battery.

FIGURE 1.3 Single Line Diagram - Battery Operation

graph TD
    A["Bypass input"] --> B["52RS"]
    B --> C["UPS Module"]
    C --> D["52M"]
    D --> E["52PS"]
    E --> F["Bypass Switch"]
    G["AC input"] --> H["52R"]
    H --> I["CONVERTER / CHARGER"]
    I --> J["INVERTER"]
    J --> K["52C"]
    K --> L["52L"]
    L --> M["Output"]
    N["Battery Cabinet"] --> O["72B"]
    O --> P["External BATTERY"]
    style A fill:#f9f,stroke:#333
    style G fill:#f9f,stroke:#333
    style N fill:#ccf,stroke:#333
    style P fill:#cfc,stroke:#333

Referring to FIGURE 1.3: In the event of AC input source failure or interruption, the UPS Converter(s) ^ will de-energize and the UPS battery(s) ^ will immediately discharge and supply DC power to the Inverter to maintain continuous AC power to the load. This operation will continue until:

a) The battery capacity expires and the inverter turns off, or
b) Input power is restored after which the converter will power the inverter and critical load and simultaneously recharge the batteries.

A fully charged battery will provide power for the specified time at the rated load, or longer, at a reduced load.

(s)* : In the case of the Parallel Operation

When power is restored after a low battery shutdown, the UPS converter(s)* automatically restarts operation, the charger(s)* recharges the batteries and the Inverter(s)* is automatically restarted without operator intervention. Load is automatically assumed by the inverter without operator intervention.

(s)* : In the case of the Parallel Operation

The power drawn by the load is equally shared between all UPS regardless of the presence or absence of the UPS that is (are) in battery operation or not whenever the system is in the Parallel Operation.

FIGURE 1.4.a UPS Parts Location (500,600kVA)

Front side

Inside

Inside of the Door

Cable entry

FIGURE 1.4.b UPS Parts Location (300,400kVA)

Front side

Inside

Inside of the Door

DC Input (BP,BN)
Cable entry

FIGURE 1.4.c UPS Parts Location (60, 120, 160, 200kVA)

Inside of the Door
Inside

Cable entry

FIGURE 1.5 Display PCB DPAU-81

FIGURE 1.6 External I/F PCB IOAU-09

FIGURE 1.7 Parallel I/F PCB IFAU-22 (*Option of parallel system)

FIGURE 1.8 MAIN PCB
(a) UPHR-K*

(b) UPJR-E*

Description of FIGURES 1.4 to 1.8:

1. LCD Touch Panel Monitor Display

The Liquid Crystal Display (LCD) Touch Panel Monitor Display indicates power flow, measured values and fault and error messages via user selectable display screens. Refer to FIGURE 2.1 for details.

2. Display PCB DPAU-81 (FIGURE 1.5):

Switches on DPAU-81 board : FOR SERVICE PERSONNEL ONLY

• (10) SW1 (RESET switch)
• (11) SW5 (TEST switch)
• (12) SW6 (MAINTENANCE switch)

3. External Communication Connector

RS232C connector on DPAU-81 board : FOR SERVICE PERSONNEL ONLY

4. Main PCB UPHR-K\*/UPJR-E\* (FIGURE 1.8):

Switches on UPHR-K*/UPJR-E* board : FOR SERVICE PERSONNEL ONLY

• (13) SW1 (RESET switch)
• (14) SW2 (BOOT switch)
• (15) SW3 (52L S/W switch)

5. Parallel control PCB TLCR-H (not shown)

For use in Parallel Operation system application : Option

6. Grounding Bar (E)

Refer to FIGURE 3.2.

7. AC input, AC output, DC input terminal

Refer to FIGURE 3.2 for details.

8. External I/F PCB IOAU-09 (FIGURE 1.6):

Signal I/F on IOAU-09 board

- (16) External contact signal terminal block Refer to FIGURE 2.10 for details.

9. Power supply PCB PSAU-80

10. "RESET" switch (FOR SERVICE PERSONNEL ONLY)

This switch resets errors resulting from alarm conditions.

11. "TEST" switch (FOR SERVICE PERSONNEL ONLY)

This switch changes system operation to the test-mode.

12. "MAINTENANCE" switch (FOR SERVICE PERSONNEL ONLY)

This switch sets the UPS menu parameters.

13. "RESET" switch (FOR SERVICE PERSONNEL ONLY)

This switch resets errors resulting from alarm conditions.

14. "BOOT" switch (FOR SERVICE PERSONNEL ONLY)

This switch boots the processor on the main control circuit board following alarm conditions.

15. "52L S/W" switch (FOR SERVICE PERSONNEL ONLY)

This switch prohibits turning on the AC output contactor "52C" during test/maintenance in Parallel Operation system application.

16. External contact signal terminal block

Terminal block to connect contact signal input/output lines to and from external dry contacts. Refer to FIGURE 2.10 for details.

1.5 SYSTME SINGLE LINE DIAGRAM

The UPS is apply to three types of systems as below

① Single module system with maintenance bypass
② Series backup redundancy system
③ Distributed bypass redundancy system

Using the different system to support the different requires. The UPS can be shut down for maintenance without cut the power in redundancy parallel system.

TABLE 1.3 System Diagram

SYSTME	SYSTEM DIAGRAM
Single module system with maintenance bypass	*External maintenance circuit cabinet is required with 300~600kVA UPS.200kVA UPS With internal maintenance bypass circuit (Option).
Series backup redundancy system	*.This system is required to add a reactor to the bypass circuit between main UPS and backup UPS.*.The internal switches 52PS and 52L keep connecting, and 52M keeps disconnecting during normal operation. Transfer load to external maintenance bypass to supply power during maintenance procedures.

*.This system is required to add a reactor to the bypass circuit between main UPS and backup UPS.
*.The internal switches 52PS and 52L keep connecting, and 52M keeps disconnecting during normal operation. Transfer load to external maintenance bypass to supply power during maintenance procedures.

Distributed bypass redundancy system

graph TD
    A["RETURN MULTIMOUNT SPASS CABINET"] --> B["INPUT ENTRY CABINET"]
    B --> C["UPS 1"]
    B --> D["UPS 2"]
    C --> E["Perlellie channel"]
    D --> F["BATTERY CABINET 1"]
    D --> G["BATTERY CABINET 2"]
    E --> H["Switch"]
    F --> I["Switch"]
    G --> J["Switch"]
    H --> K["Ground"]
    I --> L["Ground"]
    J --> M["Ground"]

*.Bypass input should be the same utility input. Otherwise, the cable of both bypass circuit must be the same in length.
*.Maximum units of parallel above to 8 UPSs.
*.The internal switches 52PS and 52L keep connecting, and 52M keeps disco nnecting during normal operation. Transfer load to external maintenance bypass to supply power during maintenance procedures.

The precautions for safety to operating the UPS

※1: Bypass Input/Maintenance Bypass Input/AC Input, all of them should to connect to the same 3 phase 4 wires Utility Input source.
※2: Refer to AC Input and Bypass Input (Maintenance Bypass) should be separated input power source, only bypass input source connect to ground, and the transformer of AC Input should be non-grounded.
※3: To prevent circuit unbalance occurred when providing power by bypass mode, to install a 1% reactor(Variability±1%) to AC Output for each UPS would be necessary in MMS system.

1.6 SPECIFICATIONS

The UPS nameplate displays the rated kVA as well as nominal voltages and currents. The nameplate is located on the inside of the UPS front door.

TABLE 1.4 Power Specifications

Rated outputPower	Input voltage3 phase / 4 wire	Bypass input voltage3 phase / 4 wire	Output voltage3 phase / 4 wire
60kVA/54kW, 120kVA/108kW	380V	380V	380V
160kVA/144kW, 200kVA/180kW	380V	380V	380V
300kVA/270kW, 400kVA/360kW	380V	380V	380V
500kVA/450kW, 600kVA/540kW	380V	380V	380V

TABLE 1.5 UPS Module Information

UPS[kVA]	CableEntry	Width[in / mm]	Depth[in / mm]	Height[in / mm]	Weight[lb./ kg]	Heating[kcal/h]
60120160200	BOTTOM	72.6 / 700	32.6 / 830	81.8 / 2080	1344.8/ 610	2060410055006900
300400	BOTTOM/TOP	55.1 / 1400	32.6 / 830	81.8 / 2080	2314.9 / 1050	1035013800
500600	BOTTOM/TOP	70.9/ 1800	32.6 / 830	81.8 / 2080	3637.6 / 1650	1545020600

TABLE 1.6 Detail of Specifications

Rated Output kVA	60	120	160	200	300	400	500	600
Rated Output kW	54	108	144	180	270	360	450	540
AC INPUT
Configuration	3 phase, 4 wire
Voltage	380V, 400V, 415V (+15% to -20%)
Frequency	50 / 60 Hz (+/-10%)
Reflected Current THD	8% max100% load	5% max 100% load(no input filter required)
STATIC BYPASS INPUT
Configuration	3 phase, 4 wire
Voltage	380V - 415V ±10%
Frequency	50/60 Hz ±5%
BATTERY
Nominal Voltage	480 Vdc
Floating charge Voltage	540 Vdc
Minimum Voltage	400~540 Vdc
Number of Cells	240
AC OUTPUT
Configuration	3 phase, 4 wire
Voltage	380V, 400V, 415V
Voltage Regulation	±5%
Frequency	50 / 60 Hz
Frequency Regulation	±0.01 in free running mode
Power Factor	0.9 lagging
Voltage THD	2% maximum THD at 100% Linear Load5% maximum THD at 100% non-linear load*.±5% when load switched from inverter to bypass
Transient Response	±2% maximum at 100% load step±2% maximum at loss/return of AC power±5% maximum at load transfer to/from static bypass
Transient Recovery	Less than 20ms
Voltage Unbalance	2% maximum at 100% unbalanced load
Phase Displacement	±1 deg. maximum at 100% load, ±3 deg. at unbalanced load
Inverter Overload	125% for 10 minutes; 150% for 60 seconds at 25°C
ENVIRONMENTAL
Cooling	Forced Air
Operating Temperature	32°F to 104°F (0°C to 40°C).Recommended: 68 F to 86°F (20°C to 30°C)
Relative Humidity	20% ~ 80% Non Condensing
Altitude	1000 meter (3280feet)
Location	Indoor (free from corrosive gases and dust)

MITSUBISHI ELECTRIC

M9950 SERIES UPS OWNERS / TECHNICAL MANUAL

Page Number: 1-22

TABLE 1.7 Rating of Contactors, Breaker and Fuses

	NUMBER APPLICATION		OUTPUT CAPACITY OF EQUIPMENT
			60kVA	120kVA	160kVA	200kVA	300kVA	400kVA	500kVA	600kVA
			54kW	108kW	144kW	180kW	270kW	360kW	450kW	540kW
Contactor	52RC	AC input contactor	350A				800A		1000A
	52C	Inverter output contactor	350A 800A 1000A
	88RC	Control circuit contactor	20A				20A		20A
Breaker	72B	Battery disconnect breaker (Recommended)	600A				1200A		1600A
	User supply	AC input breaker (Recommended)	400A 800A 1250A
	User supply	AC output breaker (Recommended)	400A 800A 1250A
	User supply	AC Bypass breaker (Recommended)	400A 800A 1250A
Fuses	FPR-FPW FNR-FNW	DC fuse	—				630A / 690V		700A / 690V
	FP-FN	DC fuse	400A / 690V				—		—
	FRR1-FRT2	AC input fuse	450A / 690V				900A / 550V		800A / 690V *2P
	FIU1-FIW2	AC output fuse	450A / 690V				900A / 550V		800A / 690V *2P
	FPC-FNC	CHOP fuse	—				800A/690V		1250A / 600V
Disconnector (Optional)	52M	AC maintenance switch	400A				—		—
	52PS	AC bypass switch	400A				—		—
	52L	AC output switch	400A				—		—

*Rating would be changed.

2.0 OPERATION CONTROLS AND INDICATORS

The M9950 Series operator controls and indicators are located as follows (Door exterior).

FIGURE 2.1 Operation/Display Panel (Front panel)

graph TD
    A["Pin 8"] --> B["Block"]
    C["Pin 3"] --> D["LOAD ON INV."]
    E["Pin 2"] --> F["BAT. OP."]
    G["Pin 1"] --> H["LOAD ON BYP."]
    I["Pin 7"] --> J["LCD FAULT"]
    K["Pin 4"] --> L["UPS FAULT"]
    M["Pin 5"] --> N["UPS FAULT"]
    O["Pin 6"] --> P["MITSUBISHI ELECTRIC M9950 SERIES UPS"]

2.1 LED DISPLAY

1) Load on inverter LOAD ON INVERTER
Illuminates when power is supplied from inverter to the critical load.
(Indicates the state of inverter transfer switch "52C".)
2) Battery operation BATTERY OP.
Illuminates when power is supplied from batteries following a power failure.
3) Load on bypass LOAD ON BYPASS
Illuminates when power is supplied to load devices by static bypass.
(Indicates the state of bypass transfer switch "52S".)
4) Overload OVERLOAD
Illuminates in overload condition.
5) LCD fault [ LCD FAULT ] (red)
Illuminates when an error occurs.
6) UPS fault UPS FAULT [Annunciator: intermittent or constant tones]
Illuminates when an error occurs in the system. In this case, the details of the error are indicated on the display panel.

2.2 EPO BUTTON (Emergency Power Off button) (7)

When activated, the Emergency Power Off (EPO) function shuts down the UPS module. The critical load will lose power and also shutdown. The EPO function can be performed both locally or remotely.

2.3 LIQUID CRYSTAL DISPLAY (8)

The Liquid Crystal Display (LCD) touch panel indicates power flow, measured values, operational guidance, data records and error messages. The LCD panel has a back-light which facilitates viewing in different ambient lighting conditions. The LCD will automatically clear and turn off, if the screen is not activated within 3 minute period. The LCD is turned back on when it is touched again. The ERROR indicator is cleared after 24 hours and can be reproduced by pressing any key on the panel.

2.3.1 MENU

A) MAIN MENU (FIGURE 2.2)

The LCD panel indicates power flow and measured values, while also operating the start/stop function. The LCD panel also allows the user to verify the status and operation of the UPS Module.

FIGURE 2.2.a Main screen (EN)

FIGURE 2.2.b Main screen (CN)

The following will be displayed when the START/STOP key on the MAIN MENU is pressed (Jump into OPERATION MENU):

1) Startup/Shutdown Guidance (FIGURE 2.3)

The display indicates the Startup and Shutdown guidance for the UPS system. If this operation is PIN protected, the user is required to enter the security PIN before the screen can be accessed.

When in remote mode, the message “REMOTE operating model” will appear on this Screen. The user cannot operate the start and stop functions without changing the setup from remote mode to local mode.

When bypass voltage is abnormal, the message "Bypass voltage abnormal" will appear.

-Start: When the bypass voltage is abnormal, the LCD asks the operator if an interrupted transfer is acceptable (Load may be lost).

-Stop: When the bypass voltage is abnormal, the user cannot transfer from inverter to bypass line.

FIGURE 2.3-a Startup/Shutdown guidance(EN)

FIGURE 2.3-b Startup/Shutdown guidance(CN)

FIGURE 2.3-e Shutdown guidance(EN)

FIGURE 2.3-f Shutdown guidance()

Follow Startup/Shutdown guidance accordingly.

B) MEASUREMENT MENU (FIGURE 2.4)

This screen shows details of measured values. Input and Output values are displayed. During Battery operation, Remaining battery power and Run time are also displayed.

FIGURE 2.4-a Input values (EN)

FIGURE 2.4-b Input values (CN)

FIGURE 2.4-e Values in Battery operation(EN)

FIGURE 2.4-f Values in Battery operation(CN)

This screen prompts the user to select: (a) whether the start & stop operation will be performed by local or remote operation; (b) date & time adjustment; (c) battery equalizing charge. The battery equalizing charge operation key will appear when battery equalizing charge is set up (Setup is based on battery type).

FIGURE 2.5-a Remote/Local operation select(EN)

FIGURE 2.5-b Remote/Local operation select(CN)

FIGURE 2.5-c Date & Time adjustment(EN)

FIGURE 2.5-d Date & Time adjustment(CN)

This LOG MENU displays two Touch icons in EVENT LOG and BATTERY LOG.

Pressing the EVENT LOG icon, up to 50 condition/operation records will be displayed.

Press ▲ or ▼ button for page turning.

Pressing the BATTERY LOG icon, Number of battery operations and Summed battery operation time are displayed.

FIGURE 2.6-a Log menu(EN)

FIGURE 2.6-b Log menu(CN)

FIGURE 2.6-c Event log(EN)

FIGURE 2.6-d Event log(CN)

FIGURE 2.6-e Battery log(EN)

FIGURE 2.6-f Battery log(CN)

2.3.2 INPUT POWER FAILURE (FIGURE 2.7)

During an Input Power Failure, the UPS inverter will be powered by the UPS batteries. The following will be displayed on the main and measurement screen (Indication of battery operation and remaining battery life).

FIGURE 2.7-a Main screen(EN) (Battery operation)

FIGURE 2.7-b Main screen(CN) (Battery operation)

FIGURE 2.7-c Measurement screen(EN) (Battery operation)

FIGURE 2.7-d Measurement screen(CN) (Battery operation)

The LCD will display a battery low voltage message when the battery capacity is near depletion. The End of Battery Discharge announcement is displayed when the battery end voltage is reached. At this time, the inverter will perform an electronic shutdown to prevent battery loss of life typical from extreme deep discharge conditions. When the input power is restored, the inverter will automatically restart to power the load, and the batteries will be simultaneously recharged. The End of Battery announcement is shown at the bottom of the screen.

2.3.3 FAULT INDICATION (FIGURE 2.8)

“MESSAGE” and “STOP ALM” icons will appear on the main menu when UPS failure condition has occurred.

FIGURE 2.8-a Main screen (Fault indication)(EN)

FIGURE 2.8-b Main screen (Fault indication)(CN)

The following will be displayed when the MESSAGE icon on the main menu is pressed.

1) MESSAGE (FIGURE 2.9)

The display shows a fault code, the description of the fault and a guidance of what action is to be taken by the user. A maximum of 10 faults is displayed at one time. If an input power failure occurs during a fault condition, the fault indication and input power failure announcement are alternatively displayed at 5 second intervals.

FIGURE 2.9-a Message screen(EN)

FIGURE 2.9-b Message screen(CN)

This icon "STOP ALM" will appear when a failure occurs. The audible alarm (announcing the failure) can be silenced by pressing this icon.

2.4 EXTERNAL SIGNAL TERMINAL BLOCK

The UPS is equipped with a series of input/output terminals for external annunciation of alarms and for remote access of certain UPS functions. The layout of terminals is shown in FIGURE 2.10 with a functional description of the input/output port presented. OUT1 to OUT8 are user programmable, but are factory default set being also shown in FIGURE 2.10.

Adding same external I/F PCB "IOAU-09", doubling signal outputs is applicable for OUT1 to OUT8.

FIGURE 2.10-a External Signal Terminal Block (NEC Class2)
TN2

graph TD
    A["1"] --> B["2"]
    A --> C["3"]
    A --> D["4"]
    A --> E["5"]
    A --> F["6"]
    A --> G["7"]
    A --> H["8"]
    A --> I["9"]
    A --> J["10"]
    A --> K["11"]
    A --> L["12"]
    A --> M["13"]
    A --> N["14"]
    A --> O["15"]
    A --> P["16"]
    A --> Q["17"]
    A --> R["18"]
    A --> S["19"]
    A --> T["20"]
    T --> U["*1"]
    V["UPS"] --> W
    style A fill:#f9f,stroke:#333
    style T fill:#f9f,stroke:#333

SUMMARY ALARM (Triggers on fault alarm only)

OUT1: LOAD ON BYPASS

OUT2: LOAD ON INVERTER

OUT8: TOTAL ALARM (Triggers on fault alarm only)

52C CLOSE

FIGURE 2.10-b External Signal Terminal Block (NEC Class2)

A) Output Contacts (for external alarm annunciation)

Output contacts consist of form “A” dry type contacts. Rated capacity of all output contacts is NEC Class2 (30Vdc/1Adc). All dry contacts should be operated at their rated values or lower. Figure 2.11 illustrates a typical installation. The external relay can also be a lamp, LED, computer, etc.

FIGURE 2.11 Control Wiring for External Contacts

graph LR
    A["UPS Cabinet"] --> B["Relay Contact"]
    B --> C["Terminal"]
    C --> D["External to UPS Cabinet"]
    D --> E["Relay Coil"]
    E --> F["NEC Class 2 Power Source"]
    F --> G["Terminal"]
    G --> H["User supplied"]

Terminals 1 to 2 "Summary Alarm" contact

Activated when a major fault has occurred with the system.

Terminals 3 to 4 "Load on Bypass" contact (OUT1)

Activated when the power is supplied from the static bypass input.

Terminals 5 to 6 "Load on Inverter" contact (OUT2)

Activated when the power is supplied by the inverter.

Terminals 7 to 8 "Battery Operation" contact (OUT3)

Activated when the battery is operating following an AC power failure.

Terminals 9 to 10 "Converter Operation" contact (OUT4)

Activated when the converter is operating.

Terminals 11 to 12 "Battery Low Voltage" contact (OUT5)

Activated when the battery voltage drops below discharge end voltage level during inverter operation (i.e. During AC fail condition).

Terminals 13 to 14 "Overload" contact (OUT6)

Activated when an overload has occurred to the system.

Terminals 15 to 16 "Total Alarm" contact (OUT7)

Activated during major fault, minor fault and alarm events.

Terminals 17 to 18 "Spare" contact (OUT8)

Terminals 19 to 20 "52C Close" contact (OUT9)

Activated when the inverter output contactor 52C has closed.

The UPS is equipped with a selectable output contact feature. The above alarms are the default settings. Contact MITSUBISHI for setup information.

B) Input Contacts (for remote access of UPS)

External contacts are provided by the user of the UPS system. Terminal voltage at the UPS is 24Vdc. Provide external dry contact accordingly.

Do not apply voltages to remote access input terminals. Damage to UPS may result.

Refer to FIGURE 2.12 for a typical wiring configuration. Although this figure applies to the remote start/stop terminals, the same wiring arrangement is used for emergency stop; power demand; and battery temperature high.

FIGURE 2.12 Remote "Start" Contact Connections

graph TD
    A["Relay Coil"] --> B["24 VDC"]
    B --> C["Common"]
    C --> D["Start Switch"]
    D --> E["External to UPS Cabinet"]
    F["Relay Coil current: 8.3mA"] --> C
    G["Use Momentary Switches Only"] --> C
    H["User supplied"] --> G

Details of input contacts for remote access : TN1

Terminals 7 to 8 Remote "Inverter Start" input terminal (IN1)

Used to start inverter from a remote location. UPS must be programmed for remote operation. Refer to Operations Menu for procedure.

Terminals 9 to 10 Remote "Inverter Stop" input terminal (IN2)

Used to stop inverter from a remote location. UPS must be programmed for remote operation. Refer to Operations Menu for procedure.

Terminals 11 to 12 "Battery Temp. High" contact input (IN3)

Input fed by a thermocouple that monitors battery temperature. The converter float voltage level is reduced for battery over-temperature conditions. External thermocouple is user supplied

Terminals 13 to 14 "Power Demand" Command contact input (IN4)

This contact is used to control the input power. Power demand is turned ON when the contact is closed, and power demand is turned OFF when the contact is open.

Terminals 15 to 16 "Remote EPO" contact input

Used to perform a remote UPS Emergency Power Off (EPO).

The load will be dropped.

The UPS is equipped with a selectable input contact item.

The above items are the default settings.

Contact MITSUBISHI for setup information.

In all cases, a switch having a protective cover is recommended in order to reduce the possibility of accidental operation.

3.0 INSTALLATION AND OPERATION

3.1 TRANSPORTATION AND INSTALLATION

TABLE 3.1.1 How to transport and install the system

Transportation Installation
Transport unit with overhead crane or forklift.	Using the pre-drilled four holes in the UPS channel base, anchor the unit using appropriate hardware. (Not provided)

If carry by overhead crane, use four eyebolts (Not provided)

TABLE 3.1.2 Transport by overhead crane

Model	UPS Cabinet
60, 120, 160, 200 kVA	4 x M20 Lifting Eyes
300,400 kVA	4 x M24 Lifting Eyes
500,600 kVA	4 x M24 Lifting Eyes

* Use lifting eyes on landing cabinet only to lift landing cabinet by itself, not as part of assembled unit.

PROHIBIT

NOTE

Do not transport UPS cabinet laid horizontally.

Cabinets must be maintained upright within +/- 15° of the vertical during handling.

3.2 INSTALLATION PROCEDURE

A) Note the load tolerance of the floor

Refer to TABLE 3.2 for list of UPS weights.

TABLE 3.2 List of UPS weights

UPS Capacity (kVA)	60	120	160	200	300	400	500	600
Weight (kg.)	610						1050	1650

B) Minimum clearance required for ventilation

Front side 1000 mm (39.4 inch) (for air flow)

Right side ____0 mm (0 inch)

Left side ____ 0 mm (0 inch)

Back side ....0 mm (0 inch)

Top side ____ 600 mm (23.6 inches) (for air flow)

C) Space requirement for routine maintenance

Allow for the following space at the time of installation.

Front 1000 mm (39.4 inches)

Sides ____ 0.0 mm (0 inch)

Back side 500mm (19.7 inch)

(Required for parts changes, also can be 0.0mm)

Top side ....600 mm (23.6 inches)

D) External Battery Supply

Please refer to the following when installing and maintaining batteries:

NOTE

1. The customer shall refer to the battery manufacturer's installation manual for battery installation and maintenance instructions.
2. The maximum permitted fault current from the remote battery supply.

3.3 PROCEDURE FOR CABLE CONNECTIONS \*

1. Confirm the capacity of the UPS being installed. Identify the input/output power terminal blocks as shown in the appropriate FIGURES 3.1 through 3.4.

2. Connect the internal control wire and power wire.

(1) Control wire Inter-connect

1. 72B UVT to terminal TN1-1, 2 of external I/F PCB IOAU-09.
2. 72B ON Auxiliary to terminal TN1-3, 4 of external I/F PCB IOAU-09.

(2) Selection of one (1) source or two (2) sources feeding the UPS. When two (2) sources feeding the UPS is selected, remove Jumper BUS Bars between AC and Bypass Input (Fig. 3.4).
(3) Control wire Inter-connect

1. 72B UVT to terminal TN1-1, 2 of external I/F PCB IOAU-09.

2. 72B ON Auxiliary to terminal TN1-3, 4 of external I/F PCB IOAU-09.

(4) Power wire (AC input, Bypass input, AC output) Inter-connect

a.) From user's distribution panel

1. X1 (A-phase) to A bus bar in UPS
2. X2 (B-phase) to B bus bar in UPS
3. X3 (C-phase) to C bus bar in UPS
4. X4 (Neutral) to N bus bar in UPS

b.) DC Input to UPS

1. Positive cable to BP bus bar in UPS
2. Negative cable to BN bus bar in UPS

CAUTION : After the completion of the input power cables connection:

With a phase rotation meter, check that the phase rotation of the AC Input power terminals A, B and C as well as the Bypass Input power terminals A40, B40 and C40 are correct.

The proper phase rotation is clockwise A(R)

$$ \rightarrow \boldsymbol {B} (\mathsf {S}) \rightarrow \boldsymbol {C} (T). $$

1. Connect the grounding conductor from the input service entrance to the UPS Ground Bar (E).

4. Two (2) sources feeding the UPS:

(1) Connect the AC input power cables from the input service entrance to the AC input power terminals, identified as A, B, C in FIGUREs 3.1 to 3.3. Input cables must be sized for an ampere rating larger than the maximum input drawn by the converter. (Refer to equipment nameplate for current ratings.) Confirm that an external bypass input circuit breaker (MCCB) is installed (refer to WARNING 4, page 1-4). Connect the bypass input power cables from the input service entrance to the bypass input power terminals, identified as A40, B40 and C40 in FIGUREs 3.1 to 3.3. Bypass input cables must be sized for an ampere rating larger than the maximum output current capacity of the UPS. Refer to TABLE 3.4 for recommended cable sizes.
(2) Connect the external signal terminal block as desired. Refer to section 2.4 and FIGURE 2.10 for functional description. 2mm^2 , or less, shielded conductor is recommended.

5. One (1) source feeding the UPS:

(1) Confirm that an external input circuit breaker sized to protect both the AC input and the bypass line is installed. (Refer to equipment nameplate for current ratings.) Connect the bypass input power cables from the input service entrance to the bypass input power terminals, identified as A40, B40 and C40 in FIGURES 3.1 to 3.3. Input cables must be sized for an ampere rating larger than the maximum current capacity of the UPS. Refer to TABLE 3.4 for recommended cable sizes.
(2) Using adequately sized conductors and referring to the appropriate figure identified in FIGURES 3.1 to 3.4, connect jumper bypass terminals A40, B40, C40 to AC input power terminals A, B, C as identified in FIGURES 3.1 to 3.4.

(3) Connect the external signal terminal block as desired. Refer to section 2.4 and FIGURE 2.10 for functional description. 2mm^2 , or less, shielded conductor is recommended.

1. Confirm that all UPS internal contactors (breakers) "52RC", "52C" are open before energizing UPS.
2. UPS power terminals are supplied with stud type fittings.

It is recommended that compression lugs be used to fasten all input/output power cables.

1. Procedure for Cable Connections for Parallel Operation System

(1) Confirm the number of units to be connected in parallel. Identify the input/output power terminal blocks and control wire connections for parallel operation systems as shown in the appropriate FIGURES 3.5 and 3.6.
(2) Connect the external control wire and power wire.

a.) Control wire connection

Parallel configuration wiring (Refer to FIGURE 3.5 and 3.6.)

• External 52L-n control signal from Critical Load Cabinet (CLC) to UPS-n IOAU-09 (TN1–5, 6).
• Parallel control signal for CN94 as shown in FIGURE 3.6.
• Parallel control signal for CN96 and CN95 as shown in FIGURE 3.6.

b.) Power wire connection

From UPS AC Output Terminals to Critical Load Cabinet (CLC) (Refer to FIGURE 3.5 and 3.6.)

3.4 RECOMMENDED CABLE SIZES

The cable sizes of AC Input, AC Output, Bypass Input, DC Input are shown in TABLE 3.3 to 3.5. Due to that many of different cable sizes used may course mistakes for installation, using the maximum size for design be recommended.

TABLE 3.3 Recommended Cable Sizes (AC Input)

Capacity[kVA]	Cable size(MAX)	Screw size	Rated Current[A]
60 2×70 mm	^2	M10 or M12	102
120 2×70 mm	^2 205
160 2×70 mm	^2 273
200 2×70 mm	^2 341
300 2×120 mm	^2 485
400 2×120 mm	^2 646
500 2×240 mm	^2 808
600 2×240 mm	^2 969

TABLE 3.4 Recommended Cable Sizes (AC Output, Bypass Input)

Capacity[kVA]	Cable size(MAX)	Screw size	Rated Current[A]
60 2×70 mm	^2	M10 or M12	91
120 2×70 mm	^2 182
160 2×70 mm	^2 243
200 2×70 mm	^2 304
300 2×120 mm	^2 456
400 2×120 mm	^2 608
500 2×240 mm	^2 760
600 2×240 mm	^2 912

TABLE 3.5 Recommended Cable Sizes (DC Connection)

Capacity[kVA]	Cable size(MAX)	Screw size	Rated Current[A]
60 2×95 mm	^2	M10 or M12	141
120 2×95 mm	^2 281
160 2×95 mm	^2 375
200 2×95 mm	^2 470
300 2×185 mm	^2 703
400 2×185 mm	^2 938
500 4×150 mm	^2 1172
600 4×150 mm	^2 1406

*1 - The cables must be selected to be equal to the sizes listed in the table.
*2 - Voltage drop across power cables not to exceed 2% of nominal source voltage.
*3 - Allowable ampere-capacities based on 75 degree C. insulation at ambient temperature of 40 degree C.

Note: Copper conductors assumed.

FIGURE 3.1 UPS Terminal Designation
(60, 120, 160, 200kVA)

graph TD
    A["AC Input"] --> B["Terminals A41 B41 C41 N41"]
    A --> C["Terminals A B C"]
    B --> D["52RC"]
    D --> E["CONVERTER / CHARGER"]
    E --> F["INVERTER"]
    F --> G["52C"]
    G --> H["52L"]
    H --> I["Output Terminals A51 B51 C51 N51"]
    J["Bypass Input"] --> K["Terminals A41 B41 C41 N41"]
    J --> L["Terminals A B C"]
    M["External BATTERY"] --> N["72B"]
    O["52M 52PS"] --> P["BYP SW"]
    Q["52C"] --> R["52L"]

(300\~600kVA)

graph TD
    A["AC Input"] --> B["Terminals A40 B40 C40 N40"]
    A --> C["Terminals A B C"]
    D["Bypass Input"] --> E["Terminals A40 B40 C40 N40"]
    F["CONVERTER / CHARGER"] --> G["INVERTER"]
    H["External BATTERY"] --> I["72B"]
    I --> J["Terminals BP BN"]
    K["BYP SW"] --> L["Output Terminals A50 B50 C50 N50"]

MITSUBISHI ELECTRIC

M9950 SERIES UPS OWNERS / TECHNICAL MANUAL

Page Number:

3-7

FIGURE 3.2.a Diagram of input/output bus bars and terminal blocks at one (1) source feeding the UPS (500,600kVA)

Location of bus bars and terminal blocks (Top / Bottom Side Entry)	Detailed Power Terminals
500, 600kVA : H:1980mm W:1800mm D:830mm※H: 2080(include Channel base)	For power terminals, use 1/2" (12mm) diameter bolts.

MITSUBISHI ELECTRIC

M9950 SERIES UPS OWNERS / TECHNICAL MANUAL

Page Number:

3-8

FIGURE 3.2.b Diagram of input/output bus bars and terminal blocks at two (2) source feeding the UPS (500,600kVA)

Location of bus bars and terminal blocks (Top / Bottom Side Entry)	Detailed Power Terminals
500,600kVA : H:1980mm W:1800mm D:830mm※H: 2080(include Channel base)	For power terminals, use 1/2" (12mm) diameter bolts.

MITSUBISHI ELECTRIC

M9950 SERIES UPS OWNERS / TECHNICAL MANUAL

Page Number: 3-9

FIGURE 3.2.c Diagram of input/output bus bars and terminal blocks (300,400kVA)

Location of bus bars and terminal blocks (Top/Bottom Side Entry)	Detailed Power Terminals
300,400kVA : H:1980mm W:1200mm D:830mm ※H: 2080(include Channel base)	For power terminals, use 1/2" (12mm) diameter bolts.
	Cable Entry (Top) Grounding Bar (E) AC INPUT AC OUTPUT BYP INPUT A40340 C40 Cable Entry (Bottom)

MITSUBISHI ELECTRIC

M9950 SERIES UPS OWNERS / TECHNICAL MANUAL

Page Number: 3-10

FIGURE 3.2.d Diagram of input/output bus bars and terminal blocks (200kVA)

Location of bus bars and terminal blocks (Bottom Side Entry)	Detailed Power Terminals
60, 120, 160, 200kVA : H:1980mm W:700mm D:830mm ※H: 2080(include Channel base)	For power terminals, use 1/2" (12mm) diameter bolts.
Cable Entry (Bottom)	Grounding Bar (E)

MITSUBISHI ELECTRIC

M9950 SERIES UPS OWNERS / TECHNICAL MANUAL

Page Number: 3-11

FIGURE 3.3 Diagram of Power Wire & Control Wire Inter-Connect between UPS and Battery

graph TD
    A["External signal terminal IOAU-09 - [TN1"]] -->|① DC24V| B["1"]
    A -->|②| C["2"]
    A -->|③| D["3"]
    A -->|④| E["4"]
    F["Power terminal"] --> G["BN"]
    F --> H["BP"]
    I["72B (DC circuit breaker)"] --> J["UVT DC24V /Reset prevention type"]
    J --> K["Auxiliary DC24V 16mV"]
    K --> L["“-” Negative"]
    K --> M["“+” Positive"]
    N["User supplied"] --> O["Ground"]

UPS module DC breaker for Battery

Note1)DC24V is outputted to 72B UVT coil through a terminal box from IOAU-09 PWB.

(DC24V power supply capability: maximum current 1.25A, rated current 0.41A)

If DC24V loses, the trip state of 72B will be carried out.

Note2) Even if a 72B UVT coil carries out reset operation of the breaker from a trip state in the state of no magnetizing, it cannot turn OFF.

Note3) When the magnetization voltage of a coil returns to 24V, it is possible to reset a breaker in the OFF state.

Note4)DC24V-16mA is impressed to 72B auxiliary contact through a terminal box from IOAU-09 PWB.

FIGURE 3.4.a Changing to two (2) source feeding the UPS from one (1) sources feeding the UPS at 200kVA

FIGURE 3.4.b Changing to two (2) source feeding the UPS from one (1) sources feeding the UPS at 300,400kVA

FIGURE 3.4.c Changing to two (2) source feeding the UPS from one (1) sources feeding the UPS at 500,600kVA

MITSUBISHI ELECTRIC

M9950 SERIES UPS OWNERS / TECHNICAL MANUAL

Page Number: 3-13

FIGURE 3.5 Diagram of Power Wire Connect (Parallel Operation system connection)

graph TD
    subgraph UPS-1
        A1["52M"] --> B1["Converter /Charger"]
        B1 --> C1["Inverter"]
        C1 --> D1["52L"]
        D1 --> E1["AC output"]
        E1 --> F1["52L"]
        F1 --> G1["SMB"]
    end

    subgraph UPS-2
        A2["52RC"] --> B2["Converter /Charger"]
        B2 --> C2["Inverter"]
        C2 --> D2["52L"]
        D2 --> E2["AC output"]
        E2 --> F2["52L 2"]
        F2 --> G2["SMB"]
    end

    subgraph UPS-n
        A3["52M"] --> B3["Converter /Charger"]
        B3 --> C3["Inverter"]
        C3 --> D3["52L"]
        D3 --> E3["AC output"]
        E3 --> F3["52L n*1"]
    end

    subgraph UPS-2
        A4["52RC"] --> B4["Converter /Charger"]
        B4 --> C4["Inverter"]
        C4 --> D4["52L"]
        D4 --> E4["AC output"]
        E4 --> F4["52L n*1"]
    end

    style UPS-1 fill:#f9f,stroke:#333
    style UPS-2 fill:#ccf,stroke:#333
    style UPS-n fill:#cfc,stroke:#333
    style UPS-2 fill:#fcc,stroke:#333
    style UPS-n fill:#cff,stroke:#333
    note right of UPS-1: UPS-1 *1, Bypass input, AC input, UPS-2, UPS-n *1, AC input, Critical Load Cabinet *1 *n : Maximum = 8

MITSUBISHI ELECTRIC M9950 SERIES UPS

FIGURE 3.6.a Diagram of Power Wire & Control Wire Connections for 2 units in MMS Configuration

graph TD
    subgraph UPS-1
        A["IFAU-22"] --> B["TLBIN"]
        A --> C["TLAIN"]
        A --> D["TLBOUT"]
        A --> E["TLAOUT"]
        A --> F["CB2IN"]
        A --> G["CB1IN"]
        A --> H["CA2IN"]
        A --> I["CA1IN"]
        A --> J["CB2OUT"]
        A --> K["CB1OUT"]
        A --> L["CA2OUT"]
        A --> M["CA1OUT"]
        A --> N["CA1FR"]
        O["ETLBIN"] --> P["ETLAIN"]
        O --> Q["ETLBOUT"]
        O --> R["ETLAOUT"]
        S["CB2E"] --> T["CB1E"]
        U["CA2E"] --> V["CA1E"]
        W["CB2FR"] --> X["CB1FR"]
        Y["CA2FR"] --> Z["CA1FR"]
    end

    subgraph UPS-2
        AA["IFAU-22"] --> AB["TLBIN"]
        AA --> AC["TLAIN"]
        AA --> AD["TLBOUT"]
        AA --> AE["TLAOUT"]
        AA --> AF["CB2IN"]
        AA --> AG["CB1IN"]
        AA --> AH["CA2IN"]
        AA --> AI["CA1IN"]
        AA --> AJ["CB2OUT"]
        AA --> AK["CB1OUT"]
        AA --> AL["CA2OUT"]
        AA --> AM["CA1OUT"]
    end

    subgraph TMEIC Tie Cabinet (TTC)
        AN["TMEIC Tie Cabinet (TTC)"] --> AO["35 36 37 38 49 50"]
    end

    note1["Use Ethernet STP (Shielded Twisted Pair) Cable for all communication cabling. Use of UTP (Unshielded Twisted Pair) Cable may cause malfunction.&quot;<br>Total cable length from UPS-1 to UPS-2 should be within 100m.&quot;<br>*1 Return from the last UPS module to the second UPS module (continuous loop).&quot;<br>    note2[&quot;AC OUTPUT"]
    note3["AC OUTPUT"]
    note4["A50 B50 C50"]
    note5["5 6"]
    note6["3 5"]
    note7["5 6"]
    note8["5 6"]
    note9["5 6"]
    note10["5 6"]
    note11["5 6"]
    note12["5 6"]
    note13["5 6"]
    note14["5 6"]
    note15["5 6"]
    note16["5 6"]
    note17["5 6"]
    note18["5 6"]
    note19["5 6"]
    note20["5 6"]
    note21["5 6"]
    note22["5 6"]
    note23["5 6"]
    note24["5 6"]
    note25["5 6"]
    note26["5 6"]
    note27["5 6"]
    note28["5 6"]
    note29["5 6"]
    note30["5 6"]
    note31["5 6"]
    note32["5 6"]
    note33["5 6"]
    note34["5 6"]
    note35["5 6"]
    note36["5 6"]
    note37["5 6"]
    note38["5 6"]
    note39["5 6"]
    note40["5 6"]
    note41["5 6"]
    note42["5 6"]
    note43["5 6"]
    note44["5 6"]
    note45["5 6"]
    note46["5 6"]
    note47["5 6"]
    note48["5 6"]
    note49["5 6"]
    note50["5 6"]

FIGURE 3.6.b Diagram of Power Wire & Control Wire Connections for 3 or 4 units in MMS Configuration

graph TD
    A["UPS-1"] --> B["IFAU-22 TLBIN"]
    A --> C["ETLBIN"]
    A --> D["ETLAIN"]
    A --> E["TLBOUT"]
    A --> F["ETLBOUT"]
    A --> G["TLAOUT"]
    A --> H["ETLAOUT"]
    A --> I["CNS3"]
    A --> J["CE2IN"]
    A --> K["CB1IN"]
    A --> L["CA2IN"]
    A --> M["CA1IN"]
    A --> N["CE2OUT"]
    A --> O["CB1OUT"]
    A --> P["CA2OUT"]
    A --> Q["CA1OUT"]
    A --> R["CA2FR"]
    A --> S["CA1FR"]
    A --> T["CN92"]
    U["TMEIC Tie Cabinet (TTC)"] --> V["35 36 37 38 49 50"]
    V --> W["A50 B00 C00"]
    V --> X["AC OUTPUT"]
    Y["Total cable length from UPS-1 to UPS-n should be within 100m."] --> Z["IPS-2"]
    Z --> AA["IFAU-22 TLBIN"]
    Z --> AB["ETLBIN"]
    Z --> AC["ETLAIN"]
    Z --> AD["TLBOUT"]
    Z --> AE["ETLBOUT"]
    Z --> AF["TLAOUT"]
    Z --> AG["ETLAOUT"]
    Z --> AH["CNS3"]
    Z --> AI["CE2IN"]
    Z --> AJ["CB1IN"]
    Z --> AK["CA2IN"]
    Z --> AL["CA1IN"]
    Z --> AM["CE2OUT"]
    Z --> AN["CB1OUT"]
    Z --> AO["CA2OUT"]
    Z --> AP["CA1OUT"]
    Z --> AQ["CA2FR"]
    Z --> AR["CA1FR"]
    Z --> AS["CNS3"]
    Z --> AT["AC OUTPUT"]
    U --> AU["A50 B00 C00"]
    U --> AV["AC OUTPUT"]
    V --> AW["A50 B00 C00"]
    V --> AX["AC OUTPUT"]
    X --> AY["A50 B00 C00"]
    X --> AZ["AC OUTPUT"]
    Y --> BA["A50 B00 C00"]
    Y --> BB["AC OUTPUT"]
    Z --> BC["A50 B00 C00"]
    Z --> BD["AC OUTPUT"]
    AA --> BE["A50 B00 C00"]
    AA --> BF["AC OUTPUT"]
    AB --> BG["A50 B00 C00"]
    AB --> BH["AC OUTPUT"]
    AC --> BI["A50 B00 C00"]
    AC --> BJ["AC OUTPUT"]
    AD --> BK["A50 B00 C00"]
    AD --> BL["AC OUTPUT"]
    AE --> BM["A50 B00 C00"]
    AE --> BN["AC OUTPUT"]
    AF --> BO["A50 B00 C00"]
    AF --> BP["AC OUTPUT"]
    AG --> BQ["A50 B00 C00"]
    AG --> BR["AC OUTPUT"]
    AH --> BS["A50 B00 C00"]
    AH --> BT["AC OUTPUT"]
    AI --> BU["A50 B00 C00"]
    AI --> BV["AC OUTPUT"]
    AJ --> BW["A50 B00 C00"]
    AJ --> BX["AC OUTPUT"]
    AK --> BY["A50 B00 C00"]
    AK --> BZ["AC OUTPUT"]

FIGURE 3.6.c Diagram of Power Wire & Control Wire Connections for 5 to 8 units in MMS Configuration

graph TD
    subgraph UPS-1
        A["TPAU-22 TLBIN"] --> B["ETLBIN"]
        C["TLAIN"] --> D["ETLAIN"]
        E["TLBOUT"] --> F["ETLBOUT"]
        G["TLAOUT"] --> H["ETLAOUT"]
        I["CB2IN"] --> J["CB2E"]
        K["C81IN"] --> L["C81E"]
        M["C83IN"] --> N["CA2E"]
        O["C84IN"] --> P["CA1E"]
        Q["C82OUT"] --> R["CB2PR"]
        S["C81OUT"] --> T["C81PR"]
        U["C82OUT"] --> V["CA2PR"]
        W["C83OUT"] --> X["CA1FR"]
    end

    subgraph UPS-2
        Y["TPAU-23 TLBIN"] --> Z["ETLBIN"]
        AA["TLAIN"] --> AB["ETLAIN"]
        AC["TLBOUT"] --> AD["ETLBOUT"]
        AE["TLAOUT"] --> AF["ETLAOUT"]
        AG["C82IN"] --> AH["CB2E"]
        AI["C83IN"] --> AJ["CB1E"]
        AK["C83IN"] --> AL["CA2E"]
        AM["C84IN"] --> AN["CA1E"]
        AO["C85OUT"] --> AP["CB2PR"]
        AQ["C81OUT"] --> AR["CB1PR"]
        AS["C82OUT"] --> AT["CA2PR"]
        AU["C83OUT"] --> AV["CA1FR"]
    end

    subgraph UPS-n
        AW["TPAU-22 TLBIN"] --> AX["ETLBIN"]
        AY["TLAIN"] --> AZ["ETLAIN"]
        BA["TLBOUT"] --> BB["ETLBOUT"]
        BC["TLAOUT"] --> BD["ETLAOUT"]
        BE["C82IN"] --> BF["CB2E"]
        BG["C83IN"] --> BH["CB1E"]
        BI["C83IN"] --> BJ["CA2E"]
        BK["C84IN"] --> BL["CA1E"]
        BM["C82OUT"] --> BN["CB2PR"]
        BO["C81OUT"] --> BP["CB1PR"]
        BQ["C82OUT"] --> BR["CA2PR"]
        BS["C83OUT"] --> BT["CA1FR"]
    end

    UPS-1 -->|IOAU-09 TN 1| TMEIC_Tie_Cabinet(TTC)
    UPS-2 -->|AC OUTPUT| TMEIC_Tie_Cabinet(TTC)
    UPS-n -->|IOAU-09 TN 1| TMEIC_Tie_Cabinet(TTC)
    TMEIC_Tie_Cabinet(TTC) -->|33 36 57 58 49 60| UPS-1
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-1
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-1
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-1
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-2
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-2
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-3
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-3
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-3
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-4
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-4
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-5
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-5
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-6
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-6
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-7
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-7
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-8
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-8
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-9
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-9
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-10
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-10
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-11
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-11
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-12
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-12
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-13
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-13
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-14
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-14
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-15
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-15
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-16
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-16
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-17
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-17
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-18
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-18
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-19
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-19
    TMEIC_Tie_Cabinet(TTC) -->|APS-2 A B C ... UPS-N*2 A B C| UPS-100

3.5 OPERATING PROCEDURES

The operation procedures are described by the symbols below.

Although the operation of "UPS supply" "bypass supply" might be different in each system which depends on user's requirements, please consult the exclusive manual for each system in order to ensure proper operation.

: Manual Operation

: Selection Item

: Automatic Operation / Device Status

: Power Status

For parallel operation system of MMS (Multi-Module System), refer to section "3.5.2 Start-up / Shut-down (MMS with Individual Bypass Parallel Redundancy)".

NOTE

Before the UPS startup, the internal Bypass line starts to supply the unconditioned bypass input power to the critical load if the External input (or Bypass) Circuit Breaker is closed. Be extremely careful with closing the External input (or Bypass) Circuit Breaker. Confirm the position of the circuit protectors (CPMC, CPMS and EMB) located at the upper part of the cabinet (FIGURE 3.7).

1) CPMC and CPMS: ON; 2) EMB: OFF.

FIGURE 3.7 Circuit protectors location

500,600kVA

300, 400kVA

60, 120, 160, 200kVA

3.5.1 Start-up/Shut-down Procedure (Single Module System)

The single-line diagram of single module system is shown in FIGURE 3.8.

FIGURE 3.8 Circuit diagram of single module system

graph TD
    A["Input panel"] --> B["52RS"]
    C["Input panel"] --> D["52R"]
    E["72B"] --> F["72RC"]
    G["UPS panel"] --> H["52PS"]
    H --> I["52M"]
    I --> J["52L"]
    J --> K["52C"]
    K --> L["BYP SW"]
    L --> M["Ground"]
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333
    style G fill:#f9f,stroke:#333
    style J fill:#f9f,stroke:#333
    note right of A: Only 200kVA UPS with internal maintenance bypass.
    note right of J: * Only 200kVA UPS with internal maintenance bypass.

In this section, the operation started with the status in "Bypass Supply Mode". (Confirm all of the switches is opened or in tripping position besides 52MB.)

When "REMOTE OPERATION MODE" is displayed on the touch screen, the inverter start operation can only be performed remotely. If local inverter start operation is required (at the UPS), select "LOCAL ONLY" or "REMOTE & LOCAL" in the OPERATION MENU.

• Start-up Procedure (Single Module System)

Device	Touch Screen Flowchart of Start-up Operation Load status
Load		Confirm the loads had turned OFF	OUTAGE
UPS Panel		Confirm input switch 52PS is closed. Confirm output switch 52L is opened. Confirm maintenance bypass switch 52M is opend.
Input Panel	When external bypass breaker turns to "ON", the status of power supply will be shown on the MAIN screen. Due to the status of input breaker "52R" is "OFF", the message "Warning"(UA801) will be detected. Please follow the next indication for operation.	External Bypass Breaker (52RS) Manual ON
Input Panel		External input breaker (52R) Manual ON
		Input contactor (52RC) Automatic ON
		Converter Automatic Start-up
		Inverter Automatic Start-up
	After turning external input breaker (52R) "ON", the status of "Alarm" will be deactivated.

Device	Touch Screen Flowchart of Start-up Operation Load status
UPS Panel	H志	Touch ScreenPress「操作」or「OP」	(OUTAGE)
	日志	Touch ScreenPress「启动操作指导」or「STARTUP GUIDANCE」
	When inverter output voltage and bypass voltage are synchronized, the message "SYNC." or "同步" will be shown on screen.

Device Touch Screen Flowchart of Start-up Operation Load status
Input Panel	H芯		(OUTAGE)
UPS Panel			Maintenance bypass switch (52M)OFF confirm	Load on Bypass
			Output switch (52L)Manual ON
UPS Panel	WGHW

graph TD
    A["Device Touch Screen Flowchart of Start-up Operation Load status"] --> B["UPS Panel"]
    B --> C["操作主菜单 测量"]
    C --> D{启动操作指导}
    D -->|是| E["载入逆变器！"]
    E --> F["启动/停止"]
    F --> G["10:00 08/08/08"]
    G --> H["操作主菜单 测量"]
    H --> I{START/STOP}
    I -->|是| J["LOAD ON INVERTER!"]
    J --> K["START/STOP"]
    K --> L["10:00 08/08/08"]
    L --> M{操作主菜单 测量}
    M -->|是| N["旁路：380V 50.0Hz"]
    M -->|否| O["输入：380V 50.0Hz"]
    M --> P["电池：540V 0A"]
    M --> Q["输出：380V 50.0Hz 100A"]
    M --> R["启动/停止"]
    R --> S["10:00 08/08/08"]
    S --> T["操作主菜单 测量"]
    T --> U{START/STOP}
    U -->|是| V["START/STOP"]
    U -->|否| W["UPS Start-up completed"]
    W --> X["UPS Start-up completed"]
    X --> Y["(Load on Bypass)"]
    Y --> Z["Load on Inverter"]

• Shut-down Procedures (Single-Module System)

Device Touch Screen Flowchart of Shut-down Operation Load status
Load
UPS Panel		OUTAGE
UPS Panel	When inverter output voltage and bypass voltage are synchronized, the message "SYNC." or "同步" will be shown on screen.	↓

Device Touch Screen Flowchart of Shut-down Operation Load status
UPS Panel	H志	Touch ScreenPress「关机操作指导」or「SHUTDOWN GUIDANCE」.	(OUTAGE)
	口志	Touch ScreenPress「启动/停止」or「START/STOP」.
Device Display on Touch Screen Flowchart of Shut-down Operation Load Status
UPS Panel		H志	(OUTAGE)
		Bypass Contactor (52S)Automatic ONOutput Contactor (52C)Automatic OFFComplete Shutdown?NO(Load on Bypass)YES(UPS Shutdown)Touch ScreenPress「MAIN」or「主菜单」Load on BypassOperation completedConversion modules (Include inverter and converter) keep supplying power to charge batteries.
Device Touch Screen		Flowchart of Shut-down Operation Load Status
Input Panel		(UPS Shutdown)	(OUTAGE)
Input Panel
	Fellow the procedure of operation flowchart, the touch screen will shutdown after turning the external breaker "52R" off.	External DC Input Breaker (72B)Automatic tripInput Contactor (52RC)Automatic OFFUPS Shutdown,Operation completed

• Transfer Procedures (Single-Module System, INVERTER to BYPASS)

UPS Panel	Touch Screen			Flowchart of Transfer Operation (INVERTER to BYPASS)	Load statusDev
	操作主菜单 测量 旁路 : 380V 50.0Hz 输入 : 380V 50.0Hz 电池 : 540V 0A 输出 : 380V 50.0Hz 100A 启动/停止 10:00 08/08/08			日志 Load on INVERTER SYNC OK? YES NO Transfer disable Touch Screen Press「启动/停止」or「START/STOP」	Load on Inverter
	MAIN MEAS OP STATUS BYPASS : 380V 50.0Hz INPUT : 380V 50.0Hz BATTERY : 540V 0A OUTPUT : 380V 50.0Hz 100A START/STOP 10:00 08/08/08			H.总 Touch Screen Press「停止」or「STOP」	Load on Bypass
	操作主菜单 测量 启动 停止 关闭 10:00 08/08/08			H.总 Bypass Switch (52S) Automatic ON Output Contactor (52C) Automatic OFF	Load on Bypass
	MAIN MEAS OP STATUS START STOP CLOSE 10:00 08/08/08			H.总 Load on BYPASS
	操作主菜单 测量 旁路 : 380V 50.0Hz 输入 : 380V 50.0Hz 电池 : 540V 0A 输出 : 380V 50.0Hz 100A 启动/停止 10:00 08/08/08			H.总 Load on Bypass
	MAIN MEAS OP STATUS BYPASS : 380V 50.0Hz INPUT : 380V 50.0Hz BATTERY : 540V 0A OUTPUT : 380V 50.0Hz 100A START/STOP 10:00 08/08/08			H.总 Load on Bypass

• Transfer Procedures (Single-Module System, Bypass to Inverter)

UPS Panel	Touch Screen			Flowchart of Transfer Operation (BYPASS to INVERTER)	Load statusDev
	操作主菜单 测量 旁路 : 380V 50.0Hz 输入 : 380V 50.0Hz 电池 : 540V 0A 输出 : 380V 50.0Hz 100A 启动/停止 10:00 08/08/08			H点 Load on BYPASS SYNC OK? YES NO Transfer disable Touch Screen Press「启动/停止」or「START/STOP」	Load on Bypass
	MAIN MEAS OP STATUS BYPASS : 380V 50.0Hz INPUT : 380V 50.0Hz BATTERY : 540V 0A OUTPUT : 380V 50.0Hz 100A START/STOP 10:00 08/08/08			H点 Touch Screen Press「启动」or「START」	Load on Inverter
	操作主菜单 测量 启动 停止 关闭 10:00 08/08/08			口志 Output Contactor (52C) Automatic ON	Load on Inverter
	MAIN MEAS OP STATUS START STOP CLOSE 10:00 08/08/08
	操作主菜单 测量 旁路 : 380V 50.0Hz 输入 : 380V 50.0Hz 电池 : 540V 0A 输出 : 380V 50.0Hz 100A 启动/停止 10:00 08/08/08
	MAIN MEAS OP STATUS BYPASS : 380V 50.0Hz INPUT : 380V 50.0Hz BATTERY : 540V 0A OUTPUT : 380V 50.0Hz 100A START/STOP 10:00 08/08/08

• Transfer Procedures (Single-Module System, Inverter to Maintenance Bypass)

Device	Touch Screen			Flowchart of Transfer Operation (INVERTER to MAINTENANCE BYPASS)	Load status
UPS Panel
				Load on INVERTER	Load on Inverter
				According to bypass transfer operation, transfer to bypass	Load on Bypass
				Load on BYPASS	Load on Internal Maintenance Bypass
				Internal Maintenance Bypass Switch (52M) Manual ON
				External DC Input Breaker (72B) Manual OFF
Input Panel				Manual OFF
UPS Panel				Input Contactor (52RC) Automatic OFF
				Internal Output Switch (52L) Manual OFF
				Internal Bypass input Switch (52PS) Manual OFF
				External DC Input Breaker (72B) Automatic trip
				Load on INTERNAL MAINTENANCE BYPASS

• Transfer Procedures (Single-Module System, Maintenance Bypass to Inverter)

	Touch Screen	Flowchart of Transfer Operation (MAINTENANCE BYPASS to INVERTER)	Load statusDev
UPS Panel		Load on INTERNAL MAINTENANCE BYPASSInternal Bypass input Switch (52PS)Manual ONExternal Input Breaker (52R)Manual ONInput contactor (52RC)Automatic ONConverterAutomatic Start-upInverterAutomatic Start-upExternal DC Input Breaker (72B)Manual ONInternal Output Switch (52L)Manual ONInternal Maintenance Bypass Switch (52M)Manual OFFAccording to inverter transfer operation, transfer to inverterLoad on INVERTER	Load on Internal Maintenance Bypass
Input Panel
UPS Panel

3.5.2 Start-up / Shut-down (MMS with Individual Bypass Parallel Redundancy)

Parallel system of two UPS modules (MMS) with general configuration of Individual Parallel Redundancy System is shown in FIGURE 3.9.

In MMS system, Internal switches must be kept the status as follows.

FIGURE 3.9 Circuit configuration of Individual Bypass Parallel Redundancy System

graph TD
    A["~"] --> B["52RS1"]
    A --> C["52RS2"]
    B --> D["Input Panel"]
    C --> D
    D --> E["72B1"]
    E --> F["52RC"]
    F --> G["52RC"]
    G --> H["52PS"]
    H --> I["52M"]
    I --> J["52PS"]
    J --> K["52C"]
    K --> L["52L"]
    L --> M["Parallel Panel"]
    M --> N["52L1"]
    N --> O["52XL"]
    O --> P["52MB"]
    P --> Q["52MB"]
    Q --> R["52ML"]
    R --> S["UPS 1"]
    S --> T["52MC"]
    T --> U["52MC"]
    U --> V["52PS"]
    V --> W["52C"]
    W --> X["52L"]
    X --> Y["UPS 2"]
    Y --> Z["72B2"]
    Z --> AA["52R2"]
    AA --> AB["~"]
    AB --> AC["Battery Panel 1"]
    AB --> AD["Battery Panel 2"]

The operation of system start in the status of "Load on maintenance bypass". (Confirm all of the switches is opened or in tripping position besides 52MB.).

- Start-up Procedure (MMS with Individual Bypass Parallel Redundancy)

Device	Touch Screen Flowchart of Start-up Operation Load Status
Load			Confirm the loads had turned OFF	OUTAGE
Maintenance Bypass Panel	When external bypass breaker turned to "NO", the status of power supply will be shown on the MAIN screen.Due to the status of input breaker "52R" is "OFF", the message "Warning"(UA801) will be detected. Please follow the next indication for operation.		Confirm output breaker (52L) and maintenance bypass breaker (52MB) is opened.External Bypass Breaker (52RS)Manual ON
Input Panel	A O S		External Input Breaker (52R)Manual ONInput Contactor (52RC)Automatic ONConverterAutomatic Start-upInverterAutomatic Start-up
Device	Touch Screen		Flowchart of Start-up Operation(All UPS)	Load Status
UPS Panel(Operate sequentially from No.1 UPS)			[口志]	(OUTAGE)
			[口志]
			[口志]
			[口志]
			[口志]

Device Touch Screen		Flowchart of Start-up Operation(All UPS)		Load Status
Input Panel		H志		(OUTAGE)
Maintenance Bypass Panel				Load on Bypass
UPS Panel(Any one of the parallel UPSs)		口志

☐: Operate sequentially from No.1 UPS

Device	Touch Screen	Flowchart of Start-up Operation(All UPS)	Load Status
UPS Panel(Any one of the parallel UPSs)			(Load on Bypass)
			Load on Inverter
UPS Panel(Operate sequentially from No.1 UPS)			(Load on Inverter)
		日志
		UPS Start-UP completed

UPS Start-UP completed

●Shut-down Procedure (MMS with Individual Bypass Parallel Redundancy)

Device	Touch Screen	Flowchart of Shut-Down Operation(All UPS)	Load Status
Load		Stop Load	Load Stop
Maintenance Bypass Panel		Output Breaker (52L)Manual OFF	OUTAGE
UPS Panel(Any one of the parallel UPSs)	When inverter output voltage and bypass voltage are synchronized, the message "SYNC." or "同步" will be shown on screen.The mark "※" indicates the master UPS in the parallel system. (the mark is not shown in the Single-Module system)	口志
		Touch ScreenPress「操作」or「OP」
		口志

When inverter output voltage and bypass voltage are synchronized, the message "SYNC." or "同步" will be shown to screen. The mark "※" indicates the master UPS in the parallel system. (the mark is not shown in the Single-Module system)

Device Touch Screen	Flowchart of Shut-Down Operation (All UPS)	Load Status
UPS Panel (Any one of the parallel UPSs.)		(OUTAGE)
UPS Panel(Any one of the parallel UPSs)	H志Touch ScreenPress「操作」or「OP」Touch ScreenPress「关机操作指导」or「SHUTDOWN GUIDANCE」口志From next page	(OUTAGE)
UPS Panel

☐: Operate sequentially from No.1 UPS

Device Touch Screen	Flowchart of Shut-Down Operation(All UPS)			Load Status
Input Panel	Due to the status of bypass breaker "52RS" is "OFF", the message "Warning"(UA812) will be detected. Please follow the flowchart for operation.
	KC4A	口志	(Load on Bypass)(UPS Shutdown)To previous page	(OUTAGE)
		日志	External DC Input Breaker (72B□)Manual OFF
			External Input Breaker (52R□)Manual OFF
			External DC Input Breaker (72B)Automatic Trip
			Input Contactor(52RC)Automatic OFF
			All UPSs ShutdownOperation completeNO
			All UPSs Normal Stop Operation completeYES
			Normal Stop Operation completeShutdown Operation complete

☐: Operate sequentially from No.1 UPS

4.0 RESPONSE TO UPS FAILURE

graph TD
    A["UPS FAULT"] --> B["Annunciator Silence"]
    B --> C["Recording of Fault"]
    C --> D["Primary Action"]
    D --> E["Information to Service Center"]

Two speaker cone illustrations showing sound waves, no text or symbols present

Depress "SILENCE ALARM" icon on Main Menu.

Refer to the list of fault codes in section 6.0 for error description.

Take necessary action according to display guidance.

When faults happen, contact the Authorized MITSUBISHI Service Representatives.

Note

The error code indicated on the LCD display panel when an UPS alarms is very important.

In order to reduce repair time, please include this information, along with the operation and load status for all correspondence to MITSUBISHI field service group.

5.0 PARTS REPLACEMENT

Contact MITSUBISHI or its authorized service representatives on all issues regarding the replacement of parts.

A) Battery

Battery lifetime may vary according to the frequency of use and the average ambient operating temperature. The end of battery life is defined as the state of charge resulting in an ampere-hour capacity less than, or equal to, 80% of nominal capacity. Replace battery if its capacity is within this percentage.

B) UPS Component Parts

UPS components have a defined life expectancy (Fans, Capacitors, Filters, etc.)

Contact MITSUBISHI or its authorized service representatives for a complete parts replacement schedule. Recommended replacement time interval varies with operating environment.

Contact MITSUBISHI or its authorized service representatives for application specific recommendations.

Any parts replacements (including modification) without authorized by MITSUBISHI could result in personal injuries, death or destruction of the UPS.

Power shutdown and wait 5min for internal capacitors discharge and stopped rotating of fans should be confirmed before any replacement work.

6.0 FAULT CODES

This section covers fault codes, their description and required action.

At time of error :

A) Verify and record the occurrence of the alarm. Note details of alarm message displayed on the LCD display panel.
B) If a circuit breaker (MCCB) has tripped, depress the toggle to reset the breaker before closing it again.

(Conditions of MCCB)

Failure Code List

Table 6.1 Fault Code

Code indication (Note 3)	Status message	Meaning	Guidance	Buzzer	External relay contact (Note 1)	Failure Lamp (Note 2)
UA801	AC INPUT VOLTAGE OUT OF RANGE	Input line voltage is out of the specified range.	CHECK INPUT POWER SOURCE	Intermittent sound	Alarm AC input abnormal	—
UA802	AC INPUT FREQUENCY OUT OF RANGE	Input line frequency is out of the specified range.	CHECK INPUT POWER SOURCE	Intermittent sound	Alarm AC input abnormal	—
UA803	AC INPUT PHASE ROTATION ERROR	Input line power conductors are not wired in a proper phase sequence.	CHECK INPUT POWER SOURCE	Intermittent sound	Alarm AC input abnormal	—
UA804	CONVERTER OPE. PROHIBITION	The converter interlock is active. —		Intermittent sound	Alarm —
UA805	INVERTER OVERLOAD	The output load current has exceeded 105% of the rated current.	WARNING : DECREASE LOAD	Intermittent sound	Alarm Overload	—
UA806	INVERTER OVERLOAD	The output load current has exceeded 110% of the rated current.	WARNING : DECREASE LOAD	Intermittent sound	Alarm Overload	—
UA807	INVERTER OVERLOAD	The output load current has exceeded 125% of the rated current.	WARNING : DECREASE LOAD	Intermittent sound	Alarm Overload	—
UA808	INVERTER OVERLOAD	The output load current has exceeded 150% of the rated current.	WARNING : DECREASE LOAD	Intermittent sound	Alarm Overload	—
UA810	INVERTER OVERLOAD	Short time over-current has been detected during the inverter operation.	WARNING : DECREASE LOAD	Intermittent sound	Alarm Overload	—
UA812	BYPASS VOLTAGE OUT OF RANGE	Bypass line voltage is out of the specified range.	CHECK BYPASS INPUT	Intermittent sound	Alarm Bypass input abnormal	—
UA813	BYPASS PHASE ROTATION ERROR	Bypass line power conductors are not wired in a proper phase sequence.	CHECK BYPASS INPUT	Intermittent sound	Alarm Bypass input abnormal	—
UA814	BYPASS FREQUENCY OUT OF RANGE	Bypass line frequency is out of the specified range.	CHECK BYPASS INPUT	Intermittent sound	Alarm Bypass input abnormal	—
UA815	TRANSFER PROHIBITION	Transfer to the bypass is not available due to bypass abnormality.	—	Intermittent sound	Alarm —
UA817	EMERGENCY STOP ACTIVATED	The emergency stop was activated by the EPO switch or an external contact.	— — Alarm	—
UA821	TRANSFER PROHIBITION	The UPS could not transfer to the bypass because the inverter output was not synchronized to the bypass.	— — Alarm	—
UA822	TRANSFER PROHIBITION	The UPS could not transfer to the bypass because of backup generator operation.	— — Alarm —
UA824 72B	OPEN	The battery circuit breaker (72B) is open.	TURN ON 72B	Intermittent sound	Alarm —
UA827	52C OPE. PROHIBITION	The interlock for the inverter output contactor (52C) is active.	—	Intermittent sound	Alarm —
UA828	FAN ALARM	Cooling fan abnormal.	—	Intermittent sound	Alarm —
UA831	EMERGENCY BYPASS SWITCH ON	Emergency bypass switch has been turned on.	—	Intermittent sound	Alarm —
UA833 52L	OPEN	The load circuit breaker(52L) is turned off.	—	Intermittent sound	Alarm —
UA834	BATTERY DEPLETED/AC OUT STOPPED	The battery voltage has reached the depleted level.	— —		Major End-of-Discharge	Lit on
UA835	TRANSFER PROHIBITION	The UPS could not transfer to the bypass because the bypass source has an abnormality.	— — Alarm —
UA838	52M OPERATION	Status of 52M ON and 52L open.	CALL SERVICE ENGINEER	—	Alarm	—
UA839	52M OPERATION	Status of 52M ON and 52L ON.	CALL SERVICE ENGINEER	—	Alarm	—
UA860	REMOTE BUTTON ABNORMAL	Remote start or stop signal is being received continuously for a considerable time.	—	Intermittent sound	Alarm —
UA861	LOCAL BUTTON ABNORMAL	Local start or stop signal is being received continuously for a considerable time.	—	Intermittent sound	Alarm —
UA870	BALANCER OVERLOAD	The UPS detected an neutral point voltage unbalance.	—	Intermittent sound	Alarm Overload	—
UA890	EXTERNAL ALARM	External Alarm relay turned on.	—	Intermittent sound	Alarm —
UF001	INPUT CIRCUIT ABNORMAL	Detection of a large variation of the reference error signal.	CALL SERVICE ENGINEER	Continuous sound	Major	Lit on
UF002	CONVERTER OVERCURRENT	Detection of converter overcurrent.	CALL SERVICE ENGINEER	Continuous sound	Major	Lit on
UF003	CONVERTER ABNORMAL	Pre-charging circuit is not working properly.	CALL SERVICE ENGINEER	Continuous sound	Major	Lit on
UF011	52RC ABNORMAL	Major discrepancy between reference signal and actual state of contactor 52RC.	CALL SERVICE ENGINEER	Continuous sound	Major	Lit on
UF052	52RC ABNORMAL	Minor discrepancy between reference signal and actual state of contactor 52RC.	CALL SERVICE ENGINEER	Intermittent sound	Minor	Flicker
UF056	CONVERTER OVERCURRENT	Detection of converter overcurrent.	CALL SERVICE ENGINEER	Intermittent sound	Minor	Flicker
UF059	INPUT CIRCUIT ABNORMAL	Detection of a large variation of the reference error signal.	CALL SERVICE ENGINEER	Intermittent sound	Minor	Flicker
UF102	DC OVERVOLTAGE	DC voltage surpasses the overvoltage level.	CALL SERVICE ENGINEER	Continuous sound	Major	Lit on
UF103	DC UNDERVOLTAGE	DC voltage dropped below the undervoltage level.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF108	CHOPPER OVERCURRENT	Detection of DC overcurrent.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF109 DC	UNBALANCED	Major unbalance of the neutral point voltage.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF111	UPS CONTROL CIRCUIT ERROR	Battery current unbalance.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF112	DC CIRCUIT ABNORMAL	Sudden change of the DC voltage level.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF128	CONTROL POWER SUPPLY ABNORMAL	Power supply voltage to IGBT driver PCB is below the specified level.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF151	DC VOLTAGE ABNORMAL	24 hours after input power restoration, batteries does not reach float voltage level.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF152	DC VOLTAGE ABNORMAL	Unable to equalize the voltage of various batteries after 24 hours.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF154 72B	ABNORMAL	During UVT, status signal from 72B is ON.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF156	CHG.STOPPED(BATTERY OVERTEMP.)	UF157 failure persisted for over 2 hours.	CHECK BATTERY	Intermittent sound	Minor Battery abnormal	Flicker
UF157	BATTERY OVERTEMPERATURE	Detection of overtemperature at the batteries.	CHECK BATTERY	Intermittent sound	Minor Battery abnormal	Flicker
UF158	BATTERY LIQUID LOW	Low level of battery electrolyte solution.	CHECK BATTERY	Intermittent sound	Minor Battery abnormal	Flicker
UF160	UPS CONTROL CIRCUIT ERROR	Abnormal behavior of DC current sensor.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF161	CHG.STOPPED(DCVOLT.ABNORMAL)	UF151 failure is running for over 24 hours.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF162	BATTERY ABNORMAL	Failure detection based on battery self-check.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF163	BATTERY VOLTAGE ABNORMAL	Battery voltage is abnormality.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF170	VDB SENSOR ABNORMAL	Detection of a large variation of the difference between control-only and protection-only battery voltage.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF171	UPS CONTROL CIRCUIT ERROR	Poor shared current in parallel chopper circuit; or improper charging current.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF172	CHG.STOPPED (DEVICE STATUS)	Energy storage device error.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF201	INVERTER OVERVOLTAGE	Detection of output overvoltage.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF202	INVERTER UNDERVOLTAGE	Output voltage dropped.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF203	INVERTER OVERCURRENT	Detection of inverter overcurrent.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF204	OUTPUT CIRCUIT ABNORMAL	Detection of a large variation of the reference error signal (current reference and actual current).	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF206	UPS CONTROL CIRCUIT ERROR	Discrepancy between output voltage and external voltage (bypass, common ac bus)	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF208	UPS CONTROL CIRCUIT ERROR	Cross current is abnormality.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF209	52C ABNORMAL	Error to close the contactor 52C.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF210	52C ABNORMAL	Error to open the contactor 52C.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF211 52C	ABNORMAL	No answer from contactor 52C during inverter operation.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF213	OVERTEMPERATU RE	Heatsinks temperature exceeds thermal settings.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF214	COOLING FAN ABNORMAL	Thermal relay activated protection.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF217	INVERTER OVERVOLTAGE	Detection of inverter output phase overvoltage.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF253	UPS CONTROL CIRCUIT ERROR	Discrepancy between output voltage and inverter voltage, or between output voltage and bypass voltage.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF256	OUTPUT VOLTAGE ABNORMAL	Output voltage is out of the specified range.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF257 52C	ABNORMAL	Contactor 52C failed to open during load transfer from inverter to bypass.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF258 LOAD	ABNORMAL	Load transfer due to overload for over 4 times within 5 minutes.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF259	ANOTHER UPS ABNORMAL	No detection of another UPS voltage signal.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF301	UPS CONTROL CIRCUIT ERROR	AD reference has an abnormal value.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF302	UPS CONTROL CIRCUIT ERROR	Detection of an external interruption during the software execution.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF303	UPS CONTROL CIRCUIT ERROR	Timer does not reset in the specified period (WDT settings)	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF305	UPS CONTROL CIRCUIT ERROR	Detection of an abnormal clock speed in the DSP or FPGA.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF306	UPS CONTROL CIRCUIT ERROR	Control power supply voltage are below the specified level.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF309	INVERTER VOLTAGE ABNORMAL	Inverter voltage is out of the specified range.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF310	CONTROL POWER SUPPLY ABNORMAL	Backup control power supplies exhibit abnormal condition.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF320	UPS CONTROL CIRCUIT ERROR	Cable disconnection in the parallel interface board during load supply.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF323	UPS CONTROL CIRCUIT ERROR	Major communication error during parallel operation.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF331	UPS CONTROL CIRCUIT ERROR	Gate driver abnormal for phase U (Note 4)	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF332	UPS CONTROL CIRCUIT ERROR	Gate driver abnormal for phase V (Note 4)	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF333	UPS CONTROL CIRCUIT ERROR	Gate driver abnormal for phase W (Note 4)	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF334	UPS CONTROL CIRCUIT ERROR	Gate driver abnormal for chopper (Note 4)	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF352	CONTROL POWER SUPPLY ABNORMAL	Backup control power supplies exhibit abnormal condition.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF363	UPS CONTROL CIRCUIT ERROR	Synchronization status signal is being received for a considerable time.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF371	UPS CONTROL CIRCUIT ERROR	Minor communication error during parallel operation.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF372	UPS CONTROL CIRCUIT ERROR	Unable to synchronize the inverter output and the bypass voltage.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF374	UPS CONTROL CIRCUIT ERROR	Cable disconnection in the parallel interface board.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF375	UPS CONTROL CIRCUIT ERROR	Unable to achieve synchronization for parallel operation.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF376	UPS CONTROL CIRCUIT ERROR	No control response from another UPS although its detection is possible.	CALL SERVICE ENGINEER	Intermittents sound	Minor Flicker
UF377	UPS CONTROL CIRCUIT ERROR	Overload detection signal is being received continuously for a considerable time.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF378	UPS CONTROL CIRCUIT ERROR	No answer for sending synchronizing signal.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF379	UPS CONTROL CIRCUIT ERROR	Abnormal clock speed of the parallel control board processor.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF381	STS CONTROL CIRCUIT ERROR	STS current value abnormal.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF401	52S ABNORMAL	Error to close the contactor 52S.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF402	52S ABNORMAL	Error to open the contactor 52S.	CALL SERVICE ENGINEER	Continuous sound	Major Lit on
UF420	52L OPERATION ERROR	Load circuit breaker 52L opened during inverter operation.	CHECK 52L	Continuous sound	Major Lit on
UF451 52S	ABNORMAL	Contactor 52S failed during load transfer from inverter to bypass.	CALL SERVICE ENGINEER	Intermittent sound	Minor Flicker
UF453	52M ABNORMAL	52M abnormal.	CALL SERVICE ENGINEER	Continuous sound	Minor Flicker
UF461	STS COOLING FAN ABNORMAL	STS cooling fan abnormal detected.	CALL SERVICE ENGINEER	Continuous sound	Minor Flicker
UF462	STS CONTROL CIRCUIT ERROR	Both UF461, UF463 occurred.	CALL SERVICE ENGINEER	Continuous sound	Minor Flicker
UF463	STS OVERTEMPER ATURE	STS unit over temperature.	CALL SERVICE ENGINEER	Continuous sound	Minor Flicker
UF465	STS OVERTEMPER ATURE	STS unit over temperature and load on bypass over 30%	CALL SERVICE ENGINEER	Intermittent sound	Major Lit on

(Note 1) 1) "Major" is defined as major failure. Inverter transferred to the static bypass line;

2) "Minor" is defined as a minor failure. UPS continues to operate normally, but cause of alarm must be identified;

(Note 2) Indicates one of two possible LED illumination patterns - continuously on (lit on) or intermittent (flicker).

(Note 3) Code indication means:

UA+++	Alarm
UF+++	Failure
U%0++	Rectifier circuit failure
U%1++	DC circuit failure
U%2++	Inverter circuit failure
U%3++	Control circuit failure
U%4++	Bypass system failure
U%8++	Alarm
U%+00 - U%+49	Major failure
U%+50 - U%+99	Minor failure

*) “+” denotes any numeral from 0 to 9 *) “%” denotes either “A” or “F”

7.0 DAILY INSPECTION

Please perform the daily inspection while the UPS is running. The daily inspection items are shown in Table 7.1.

The customers can only inspect exterior or environment of cabinet. When the customers want to perform the detailed inspection, contact the Authorized MITSUBISHI Service Representatives.

TABLE 7.1 How to perform daily inspection

No.	Subject	Procedure			Criteria and/or Action needed
		Term	Period	Method/Tool
1.	Environmental ambient	Dust or Gas	Daily	Visual check and smelling	Ventilate room atmosphere if dusty or smelling gas.
		Dewdrops Condensation	Daily	Visual check	Fix the dripping source Dehumidify upon necessity.
		Temperature Humidity	Daily	Thermometer hygrometer	Temperature: 32~104°F Humidity: 30~90% No condensation. To be controlled at 77°F or about by A/C.
2.	Cabinet Construction	Vibration or Audible noise	Daily	Touch and hearing	Check if fans have irregular sound. Contact service representative in case of abnormalities.
		Overheating	When needed	Touching exterior	Contact service representative in case of abnormalities.
		Air filter clog	When needed	Visual check	Clean/wipe if clogged or dusty.
3.	Operation	LCD sharpness Brightness Left-bottom LED	Daily	Visual check	No characters faded, illegible or any other abnormalities. Left-bottom LED should be green. Contact service representative when the LED shows red with the backlight lost.
		Indication terms: Output voltage Output current AC input voltage Output frequency Battery voltage Battery current DC voltage	Daily	Visual check	Check indication terms/values if within the adequate window. Also check indication meters on surface of optional cabinet, if installed.
4.	LEDs	4 status LEDs	Daily	Visual check	Check if LEDs turn on, off or flash according to the operation.
		2 fault LEDs	Daily	Visual check	If UPS fault LED turns on, scroll the screen to see fault codes and record the codes. Contact service representative to tell about fault codes and UPS symptom.

*Air filter also need to be checked during the daily inspection by visual check. Air filter required to clean up 3 month period.