UPS-RELAY - Inverter Lowell - Free user manual and instructions

Product Type	UPS Remote Monitoring Card (Dry Contact)
Model	UPS-RELAY
Brand	Lowell
Compatibility	Lowell UPS Intelligent Slot
Output Connections	DB9 male and terminal block (screw terminals)
Relay Ratings	24V DC, 1A max per relay
Dry Contact Type	Form C (SPDT) with jumper selectable active open or active closed
Remote Shutdown Input	Accepts 6V, 6mA signal for 3–10s to initiate UPS shutdown
Alarm Signals	UPS Failure, Summary Alarm, Bypass Active, Battery Low, UPS On, Utility Failure
Number of Relays	6
Jumper Positions	6 jumpers (JP1–JP6) for each signal
Dimensions (approx)	100 mm x 70 mm x 20 mm
Weight (approx)	50 g
Power Supply	Powered by UPS (no external power needed)
Installation	Plugs into Intelligent Slot on UPS rear panel, secured with provided screws
Included Accessories	2 screws, terminal block connector
Maintenance	Keep dry, avoid static discharge, clean with compressed air if needed
Safety	Follow UPS manual for installation and operation; use only with compatible UPS
Spare Parts & Repairability	No user-serviceable parts; contact Lowell for replacement

Frequently Asked Questions - UPS-RELAY Lowell

How do I install the UPS-RELAY card?

Remove the cover of the Intelligent Slot on the UPS rear panel, save the two screws. Insert the UPS-RELAY card into the slot, ensuring the sides slide into the rails. Secure the card with the two screws. Then connect monitoring equipment via DB9 cable or terminal block wires.

How do I set the jumper for active closed vs active open?

Jumpers are located behind the relays. Each jumper has three pins: Pin 1 (closest to card rear), Pin 2 (middle), Pin 3 (closest to relays). For Active Closed, connect Pin 1 and Pin 2. For Active Open, connect Pin 2 and Pin 3.

What are the DB9 pin assignments?

Pin 1: UPS Failure, Pin 2: Summary Alarm, Pin 3: GND (common for Pin 4), Pin 4: Remote Shutdown Input, Pin 5: Common for relays, Pin 6: Bypass Active, Pin 7: Battery Low, Pin 8: UPS On, Pin 9: Utility Failure. All relays are rated 24V, 1A.

How do I connect to a terminal block?

The terminal block provides screw terminals for each signal: Bypass, Low Battery, UPS On, Utility Failure, Summary Alarm, UPS Failure, GND, Common. Use stripped wires and connect to the corresponding terminals as labeled on the card.

What does the remote shutdown function do?

Apply a 6V, 6mA signal between Remote Shutdown (DB9 Pin 4) and GND (DB9 Pin 3) for 3 to 10 seconds. The UPS will shut down after 5 seconds, stay off for 5 seconds, then automatically restart even if the signal remains.

What are the alarm signals provided?

The card provides six alarm signals: UPS Failure, Summary Alarm (UPS failure, utility failure, low battery, bypass active), Bypass Active, Battery Low, UPS On, and Utility Failure (on battery mode). Each corresponds to a relay output.

Can I use this card with any UPS?

The UPS-RELAY is designed specifically for Lowell UPS models with an Intelligent Slot. It may not be compatible with other brands. Check your UPS manual for slot type.

What is the rating of the relays?

Each relay is rated at 24V DC, 1A maximum. Do not exceed these ratings to avoid damage.

How do I test the card?

After installation, monitor the DB9 or terminal block outputs with a multimeter. Set jumpers to Active Closed, then simulate UPS events (e.g., unplug mains) and check for continuity between the signal pin and Common (Pin 5).

What should I do if the card doesn't work?

Ensure the card is fully inserted and secured. Verify jumper settings match your desired logic. Check connections and power supply to the UPS. If issues persist, contact Lowell support.

USER MANUAL UPS-RELAY Lowell

UPS-RELAY

Dry Contact Card

Manual

Product Introduction

Electronic component with black connectors and a white card, featuring a 19-pin D-sub connector (no visible text or symbols)

UPS-RELAY card

Close-up of a green and black electronic component with a 10-pin D-sub connector (no visible text or symbols)

Close-up of a green electrical connector with black connectors and pins (no visible text or symbols)

Included terminal block accessory, front and rear view

The UPS-RELAY provides Form C relay dry contact closures for remote monitoring of your UPS. For versatility, the UPS-RELAY is capable of selecting Active Open or Active Closed via jumper setting. It also provides for DB9 or terminal block output connections. Suitable applications for this card are listed below:

• IBM Server, Personal PC & Workstations equipment
• Auto-controlled industrial equipment & communication applications

Installation

Step 1: Remove the cover of Intelligent Slot on the rear panel of the UPS, saving the two screws.

Step 2: Insert UPS-RELAY into Intelligent Slot. Ensure sides of card slide into rails of the card slot.

Step 3: The faceplate of the UPS-RELAY should be against the rear panel. Use a screwdriver to secure the UPS-RELAY to the UPS chassis with the two screws saved in Step 1.

Step 4: Use a 9-pin communication cable to connect monitoring equipment to DB9 or stripped wires to connect to screw terminals, implementing the remote monitoring and control.

Close-up of a server rack with a white RJ4 connector and green connectors (no visible text or symbols)

Close-up of a green power connector with cooling fans and screw terminals (no visible text or symbols)

Specifications

Internal Circuit of DB9 port

graph TD
    A["2K/0.1W"] --> B["GND"]
    B --> C["1N4148W"]
    C --> D["Summary Alarm"]
    D --> E["UPS Failure"]
    E --> F["60°"]
    F --> G["Bypass Active"]
    G --> H["70°"]
    H --> I["Battery Low"]
    I --> J["UPS On"]
    J --> K["80°"]
    K --> L["Utility Failure"]
    L --> M["90°"]
    M --> N["Remote Shutdown"]
    N --> O["Common"]
    O --> P["Remote Shutdown (Remote Shutdown Common)"]
    P --> Q["Common"]

DB9 Pin Assignment

Pin Assignment Function I/O
Pin 1 UPS Failure Output
Pin 2 UPS Summary Alarm Output
Pin 3 GND (Common for Pin 4) Power Ground
Pin 4 Remote Shutdown Input
Pin 5 Common for relays Power Supply
Pin 6 Bypass Active Output
Pin 7 Battery Low Output
Pin 8 UPS On Output
Pin 9 Utility Failure Output

All relays are rated at 24V, 1A. The shutdown pin (pin4 & pin3) only accepts 3-10s high level signal to perform the UPS shutdown. Signal limited to 6V, 6mA. Otherwise, it's necessary to add one resistor within DC current limitation in the serial loop of Remote Shutdown. (e.g. 2K resistor with at least 0.1W rating power). Refer to the diagrams in Application.

Relay Function Description

Active Closed Status	Active Open Status	Reason
Pin 1 & Pin 5 closed	Pin 1 & Pin 5 open	UPS internal failure
Pin 2 & Pin 5 closed	Pin 2 & Pin 5 open	UPS failure, utility failure, low battery, bypass active
Pin 6 & Pin 5 closed	Pin 6 & Pin 5 open	Bypass active
Pin 7 & Pin 5 closed	Pin 7 & Pin 5 open	Battery voltage is low
Pin 8 & Pin 5 closed	Pin 8 & Pin 5 open	UPS is in online/double conversion mode
Pin 9 & Pin 5 closed	Pin 9 & Pin 5 open	Utility failure/on battery mode

Terminal Block Pin Assignment

Application

Below shows the circuit of basic application to implement monitoring and control.

graph LR
    A["12V"] --> B["Summary Alarm"]
    A --> C["GND"]
    A --> D["Remote Shutdown"]
    A --> E["Common"]
    B --> F["1"]
    B --> G["6"]
    B --> H["2"]
    B --> I["7"]
    B --> J["3"]
    B --> K["8"]
    B --> L["4"]
    B --> M["9"]
    B --> N["5"]
    F --> O["Bypass"]
    G --> P["Low Battery"]
    H --> Q["UPS On"]
    I --> R["Utility Failure"]
    J --> S
    K --> T
    L --> U
    M --> V

User Interface for 12V

graph LR
    A["24V"] --> B["Common"]
    B --> C["Remote Shutdown"]
    C --> D["GND"]
    D --> E["Summary Alarm"]
    E --> F["UPS Failure"]
    F --> G["1"]
    F --> H["6"]
    F --> I["2"]
    F --> J["7"]
    F --> K["3"]
    F --> L["8"]
    F --> M["4"]
    F --> N["9"]
    F --> O["5"]
    P["Bypass"] --> Q["Low Battery"]
    R["UPS On"] --> S["Utility Failure"]

User Interface for 24V

Internal Logic Connection

The IC controller of the card controls the actions of 5 relays depending on the UPS status. Active Closed terminal and Active Open terminal of each relay connect to Pin 3 and Pin 1 of a 3-pin connector respectively. Pin 2 of the 3-pin connector connects to the signal pin of the DB9 interface connector. The 2-pin jumper can be plugged to the 3-pin connector to either connect Pin 1 & Pin 2 (Active Closed) or Pin 3 & Pin 2 (Active Open).

graph TD
    A["24V"] --> B["2K"]
    B --> C["Common"]
    C --> D["UPS Failure"]
    D --> E["JP6"]
    D --> F["JP3"]
    D --> G["JP1"]
    D --> H["JP5"]
    D --> I["JP2"]
    D --> J["JP1"]
    D --> K["JP01"]
    D --> L["JP02"]
    D --> M["JP03"]
    D --> N["JP04"]
    D --> O["JP05"]
    D --> P["Low Battery"]
    D --> Q["UPS On"]
    Q --> R["JP4"]
    Q --> S["JP5"]
    Q --> T["JP6"]
    Q --> U["JP7"]
    Q --> V["JP8"]
    Q --> W["JP9"]
    Q --> X["JP10"]
    Q --> Y["JP11"]
    Q --> Z["JP12"]
    Q --> AA["JP13"]
    Q --> AB["JP14"]
    Q --> AC["JP15"]
    Q --> AD["JP16"]
    Q --> AE["JP17"]
    Q --> AF["JP18"]
    Q --> AG["JP19"]
    Q --> AH["JP20"]
    Q --> AI["JP21"]
    Q --> AJ["JP22"]
    Q --> AK["JP23"]
    Q --> AL["JP24"]

Pin definition and internal logical connection

Accordingly, if Pin 1 connects with Pin 2 via the jumper, the status of dry contact signal will be Active Closed, refer to the diagram below. When the signal is active, the signal pin on the DB9 connector will connect with the common Pin (Pin 5) via the relay.

graph TD
    A["RY05"] --> B["2"]
    B --> C["3"]
    C --> D["UPS Failure"]
    D --> E["JP6"]
    E --> F["1"]
    F --> G["2"]
    G --> H["3"]
    H --> I["2"]
    I --> J["1"]
    J --> K["3"]
    K --> L["2"]
    L --> M["1"]
    M --> N["3"]
    N --> O["2"]
    O --> P["1"]
    P --> Q["3"]
    Q --> R["2"]
    R --> S["1"]
    S --> T["3"]
    T --> U["2"]
    U --> V["1"]
    V --> W["3"]
    W --> X["2"]
    X --> Y["1"]
    Y --> Z["3"]
    Z --> AA["2"]
    AA --> AB["1"]
    AB --> AC["3"]
    AC --> AD["2"]
    AD --> AE["1"]
    AE --> AF["3"]
    AF --> AG["2"]
    AG --> AH["1"]
    AH --> AI["3"]
    AI --> AJ["2"]
    AJ --> AK["1"]
    AK --> AL["3"]
    AL --> AM["2"]
    AM --> AN["1"]
    AN --> AO["3"]
    AO --> AP["2"]
    AP --> AQ["1"]
    AQ --> AR["3"]
    AR --> AS["2"]
    AS --> AT["1"]
    AT --> AU["3"]
    AU --> AV["2"]
    AV --> AW["1"]
    AW --> AX["3"]
    AX --> AY["2"]
    AY --> AZ["1"]

Connection for Active Closed

If Pin 3 connects with Pin 2 (Active Open) via the jumper, the status of dry contact signal will be Active Open, refer to the diagram below. When the signal is active, the signal pin on the DB9 connector will disconnect with the common Pin (Pin 5) via the relay.

graph TD
    A["24V Power Supply"] --> B["2K Control"]
    B --> C["Common"]
    C --> D["UPS Failure"]
    D --> E["JP6 Alarm"]
    E --> F["Ground"]
    G["Utility Failure"] --> H["JP5"]
    H --> I["JP4"]
    I --> J["JP3"]
    J --> K["Low Battery"]
    K --> L["JP2"]
    L --> M["JP1"]
    M --> N["Ground"]
    O["24V Power Supply"] --> P["24V Control"]
    P --> Q["24V Signal"]
    R["24V Power Supply"] --> S["24V Control"]
    S --> T["24V Signal"]
    U["Bypass"] --> V["JP3"]
    V --> W["JP2"]
    W --> X["JP1"]
    X --> Y["Ground"]
    Z["24V Power Supply"] --> AA["24V Control"]
    AA --> AB["24V Signal"]

Connection for Active Open

Jumper Set-up

The jumpers can be easily found just behind the relays.

Close-up of an electronic circuit board with various components and a RoHS indicator (no readable text or symbols beyond labels)

Pin 1 of jumper connection is located closest to the rear of the card. Pin 3 of the jumper connection is closest to the relays.

To achieve Active Closed dry-contact signal, the jumper should connect Pin 1 and Pin 2 as shown below.

Jumper setting for Active Closed

To achieve Active Open dry-contact signal, the jumper should connect Pin 2 and Pin 3 as shown below.

Jumper setting for Active Open

Jumper Functional Description

JP Description JP Description
1 UPS Alarm (DB9, Pin 2) 4 Low battery (DB9, Pin 7)
2 UPS on (DB9, Pin 8) 5 Utility failure (DB9, Pin 9)
3 Bypass (DB9, Pin 6) 6 UPS failure (DB9, Pin 1)

Remote Shutdown Functional Description

To enable remote shutdown, apply ground to Pin 3 and 6V Pin 4 for a period of 3 to 5 seconds. UPS will shutdown 5 seconds later for a period of 5 seconds. UPS will auto restart after the 5 second shutdown, even if shutdown signal is still applied.