PS 4048 - Battery charger RCF - Free user manual and instructions

Product Type	Backup Power Supply Unit and Battery Charger
Brand	RCF
Model	PS 4048
Dimensions (WxHxD)	483 x 132 x 358 mm (19" Rack, 3U)
IP Rating	IP 30
Mains Voltage	230 V ac ±15% (47–63 Hz), Class I
Primary Current (@195 V)	3 A
Nominal Power	400 W
Rated Output Voltage	48 V dc
Output Voltage (Half Load, 25°C)	54.4 V dc ±0.5%
Nominal Output Current	8 A
Battery Voltage	48 V dc (4 x 12 V batteries in series)
Authorized Battery Capacity	38–140 Ah
Battery Charging Current Limitation	Selectable: 100%, 75%, 50%, or 25% of rated current via jumper
Operating Temperature	-5 to +40°C (100% charge) / -5 to +50°C (75% charge)
Storage Temperature	-25 to +85°C
Relative Humidity	20–95%
Protections	Overcurrent via fuses (mains, loads, battery); battery low voltage cutoff (1.8 V/cell)
Fault Indication	Front panel LEDs: green (OK), orange (mains fault), red (battery/charger fault or no load); remote dry contacts
Standards	EN 54-4 (1997) + A1 + A2; CPR 0333-CPR-075370-1
Cleaning	Use a dry cloth; avoid solvents, alcohol, benzene
Maintenance	Keep in dry, ventilated location; no user-serviceable parts inside
Repairability	Fuses replaceable; other repairs by authorized service center only

Frequently Asked Questions - PS 4048 RCF

What type of batteries are required for the PS 4048?

The PS 4048 requires four 12 V rechargeable lead-acid batteries connected in series to achieve a total voltage of 48 V dc. The authorized battery capacity range is 38 to 140 Ah.

How do I set the battery charging current?

The charging current can be set by positioning a jumper on the daughterboard to one of four levels: 100%, 75%, 50%, or 25% of the nominal 8 A current.

What do the front panel LEDs indicate?

There are four LEDs: MAINS FAULT (orange when mains absent or fuse blown), BATTERY FAULT (orange when battery not present, internal resistance too high, or voltage low), OUTPUT 1 and OUTPUT 2 (green when respective output voltage is present).

Can I connect both outputs simultaneously?

Yes, you can use either one or both outputs. The maximum total output current (8 A) can be drawn from a single output or split across both.

What is the maximum continuous output current?

The maximum continuous current depends on battery capacity. It is calculated as I_max_a = 8 A - (C/20), where C is the battery capacity in Ah. For short periods without battery charging, the maximum is 8 A.

How is the battery low voltage cutoff set?

The cutoff threshold is fixed at 1.8 V per cell ±3%, which corresponds to approximately 43.2 V for a 48 V battery bank (24 cells).

What should I do if the output LEDs do not light up?

First check mains presence on the terminal strip, then verify the battery link and battery fuse. Also measure voltage on outputs 1 and 2. If issues persist, consult the troubleshooting section of the manual.

Is the PS 4048 suitable for outdoor use?

No, the PS 4048 has an IP30 rating and should be installed indoors in a dry, ventilated location. It must not be exposed to rain or moisture.

Can I service the unit myself?

Only fuse replacement is user-serviceable. For any other issue, contact an authorized RCF service center. Do not open the unit as there are no user-serviceable parts inside.

What safety features does the PS 4048 have?

It includes fuses for mains, loads, and batteries; battery low voltage cutoff; voltage compensation; fault detection with dry contacts; and is Class I earthed. Always disconnect both mains and batteries before servicing.

USER MANUAL PS 4048 RCF

OWNER MANUAL MANUALE D'USO

PS 4048

• BACKUP POWER SUPPLY UNIT AND BATTERY CHARGER
• ALIMENTATORE D'EMERGENZA - CARICA BATTERIE

TABLE OF CONTENTS INDICE

ENGLISH

SAFETY PRECAUTIONS 4

DESCRIPTION 6

INSTALLATION 6

OUTPUT 7

CONNECTIONDIAGRAMS 7

OPERATION 9

MAINTENANCE | 10

TROUBLESHOOTING 10

SPECIFICATIONS 11

ITALIANO

AVVERTENZEPERLASICUREZZA 12

DESCRIZIONE 14

INSTALLAZIONE 14

USCITA 15

Before connecting and using this product, please read this instruction manual carefully and keep it on hand for future reference.

The manual is to be considered an integral part of this product and must accompany it when it changes ownership as a reference for correct installation and use as well as for the safety precautions.

RCF S.p.A. will not assume any responsibility for the incorrect installation and / or use of this product.

WARNING: To prevent the risk of fire or electric shock, never expose this product to rain or humidity.

SAFETY PRECAUTIONS

1. All the precautions, in particular the safety ones, must be read with special attention, as they provide important information.

2.1 POWER SUPPLY FROM MAINS

• The mains voltage is sufficiently high to involve a risk of electrocution: never install or connect this product when its power cord is plugged in.
• Before powering up, make sure that all the connections have been made correctly and the voltage of your mains corresponds to the voltage shown on the rating plate on the unit, if not, please contact your RCF dealer.
• The metallic parts of the unit are earthed by means of the power cord.
  An apparatus with CLASS I construction shall be connected to a mains socket outlet with a protective earthing connection.
• Protect the power cord from damage. Make sure it is positioned in a way that it cannot be stepped on or crushed by objects.
• To prevent the risk of electric shock, never open this product: there are no parts inside that the user needs to access.
• The mains plug is used as the disconnect device and it shall remain readily operable.

2.2 BATTERIES

• Operating voltage is 48 V dc (therefore, it is necessary to connect in series several batteries having a lower nominal voltage, example: 4 x 12 V).
• Always use rechargeable batteries, which need to be chosen according to the maximum possible load.
• Verify the polarity of batteries is correct.
• Do NOT short-circuit batteries (i.e. connecting the 2 opposite poles together with metallic wires).

• Throw empty batteries away according to your country laws about ecology and environment protection.

• Make sure that no objects or liquids can get into this product, as this may cause a short circuit.

This apparatus shall not be exposed to dripping or splashing.

No objects filled with liquid (such as vases) and no naked sources (such as lighted candles) shall be placed on this apparatus.

IMPORTANT

1. Never attempt to carry out any operations, modifications or repairs that are not expressly described in this manual.

Contact your authorized service centre or qualified personnel should any of the following occur:

• The product does not function (or functions in an anomalous way).
• The power cord has been damaged.
• Objects or liquids have got in the unit.

• The product has been subject to a heavy impact.

• If this product is not used for a long period, disconnect both the power cord and batteries.

• If this product begins emitting any strange odours or smoke, switch it off immediately and disconnect both the power cord and batteries.
• Do not connect this product to any equipment or accessories not foreseen.

For suspended installation, only use the dedicated anchoring points and do not try to hang this product by using elements that are unsuitable or not specific for this purpose. Also check the suitability of the support surface to which the product is anchored (wall, ceiling, structure, etc.), and the components used for attachment (screw anchors, screws, brackets not supplied by RCF etc.), which must guarantee the security of the system / installation over time, also considering, for example, the mechanical vibrations normally generated by transducers.

To prevent the risk of falling equipment, do not stack multiple units of this product unless this possibility is specified in the user manual.

1. RCF S.p.A. strongly recommends this product is only installed by professional qualified installers (or specialised firms) who can ensure correct installation and certify it according to the regulations in force.
   The entire audio system must comply with the current standards and regulations regarding electrical systems.
2. Supports and trolleys
   The equipment should be only used on trolleys or supports, where necessary, that are recommended by the manufacturer. The equipment / support / trolley assembly must be moved with extreme caution. Sudden stops, excessive pushing force and uneven floors may cause the assembly to overturn.
3. Do not obstruct the ventilation grilles of the unit. Situate this product far from any heat sources and always ensure adequate air circulation around the ventilation grilles.
4. Do not use solvents, alcohol, benzene or other volatile substances for cleaning the external parts of this product. Use a dry cloth.

RCF S.P.A. THANKS YOU FOR PURCHASING THIS PRODUCT, WHICH HAS BEEN DESIGNED TO GUARANTEE RELIABILITY AND HIGH PERFORMANCES.

DESCRIPTION

PS 4048 is a backup power supply unit suitable to get continuity power supply for EN 54-16 system units (e.g. DXT 9000 and DXT 7000EN systems).

PS 4048 needs to be equipped with lead-acid batteries and includes recharging and monitoring functions.

INSTALLATION

Fix the unit to a 19" rack cabinet through 4 screws.

According to EN 54-16 standard, the backup power supply unit shall be installed into the same rack cabinet where there is the audio system with emergency purposes (or a system part) to which it is connected.

3D mechanical assembly diagram showing a component with mounting flanges and internal structure (no text or symbols)

19" RACK - 3U

dim.: 483 x 132 x 358 mm - IP 30

Rated output voltage: 48 V dc

Output voltage at half load (25°C): 54.4 V dc ±0.5%

Nominal output current (I n): 8 A

It is possible to link a single output or both.

The maximum overall output current that can be supplied continuously (I max a) is given by:

$$ I m a x a = I n - \frac {C}{2 0} $$

I n: nominal output current (8 A)

C: battery capacity [A h]

The maximum overall output current can be supplied for a short period of time (1 max b, when battery charging is not in progress) corresponds to the nominal value (8 A).

$$ I \max b = I n $$

PS 4048 can operate without an output load.

The maximum overall output current (8 A) can be drawn from an output or both.

CONNECTIONDIAGRAMS

Four 12V batteries need to be linked in series (total voltage: 48 V dc) and connected to the PS 4048 BATTERY input.

WIRE SECTIONS:

MAINS 1.5 ÷ 2.5 mm^2 (according to the max. load)

BATTERIES 2.5 ÷ 10 mm ^2 (according to the max. load)

OUTPUTS 2.5 ÷ 10 mm² (according to the max. load)

FAULT DETECT. 1.5 mm ^4

INTERNAL MOTHERBOARD LED COLOUR:

Green: all OK

Orange: mains fault

Red: battery or charger fault or load not present (this fault has priority over a mains fault).

Fault indications can be obtained by connecting the dedicated PS 4048 (FAULT DET.) contacts to logic inputs of the control device.

The PS 4048 properly operates when at least one of its 2 front panel green LEDs (corresponding to the load outputs) is lit.

CONNECTION TO MU 7100EN (DXT 7000EN)

Use four 12V 50 Ah batteries. The PS 4048 output 1 shall be connected to the MU 7100EN 48VDC input through diodes that are needed to reduce the PS 4048 output voltage.

Fault indications can be obtained by connecting the dedicated PS 4048 contacts to MU 7100EN CONTROL INPUTS.

FAULT DETECTION

NC: NORMALLY CLOSED
C: COMMON
NC: NORMALLY OPEN

The MAINS FAULT is locally indicated by a yellow LED (on the front panel) and remotely by its respective delayed dry contact when:

• The mains is not present or lower than 195 V ac.
• The mains fuse is blown or not present.
• The product is out of service.

The BATTERY FAULT is locally indicated by a yellow LED (on the front panel) and remotely by its respective delayed dry contact when:

• Batteries are not present (the battery test is carried out in this way: every 30 seconds for the first 20 minutes after commissioning, every 15 minutes after the first 20 minutes; if a fault is detected, batteries will have been tested every 30 seconds for 20 minutes after the fault disappears).
• The internal resistance is too high (a test every 4 hours on charged batteries; the resistance limit value is 328m ± 10% ).
• The battery voltage is lower than 1.8 V/cell ±3%.

Voltage presence on both OUTPUT 1 and OUTPUT 2 is indicated by 2 green LEDs (on the front panel) and a delayed dry contact..

VOLTAGE COMPENSATION

A voltage compensation system maintains the charge characteristics within the battery limits across the entire operational temperature range.

BATTERY CHARGING CURRENT LIMITATION

The battery charging current can be set to either 100 %, 75 %, 50 % or 25 % of the rated current by using a jumper on the daughterboard (positions: 100, 75, 50, 25).

DAUGHTERBOARD JUMPER

BATTERY LOW VOLTAGE CUTOFF

The cutoff threshold is 1.8 V/cell ±3 %.

FRONT PANEL LEDs

MAINS FAULT

BATTERY FAULT

OUTPUT 1

OUTPUT 2

In order to ensure maximal and durable service, this product needs to be installed in a dry and ventilated location and maintained clean. RCF S.p.A. is in no case liable for damages associated with improper use or incorrect maintenance of the equipment.

WARNING: do NOT use an incorrect type of batteries, as this may result in an explosion hazard.

Used batteries must be disposed of in compliance with recycling requirements.

TROUBLESHOOTING

NO OUTPUT VOLTAGE:

• Check mains presence on the mains terminal strip
• Check the fuses
• Check the floating voltage (no load) on the outputs 1 and 2
• Check that each 12 V dc battery has a voltage equal or higher than 11.5 V dc
• Repeat measurements after having disconnected loads and batteries
• Check the front panel LED indications
• If all the previous steps are validated, check the load compatibility

BATTERIES DO NOT TAKE OVER AFTER A MAINS FAULT:

• Check the voltage of each single battery
• Check the battery fuse
• Check the voltage on the outputs 1 and 2

IF THE OUTPUT 1 / OUTPUT 2 LEDS DO NOT LIGHT UP:

• Check mains presence on the mains terminal strip
• Check the battery link (and the battery fuse)
• Check the voltage on the outputs 1 and 2

RATED OUTPUT VOLTAGE: 48 V dc

OUTPUT VOLTAGE AT HALF LOAD (25°C): 54.4 V dc ±0.5%

NOMINAL OUTPUT CURRENT: 8A

NOMINAL POWER: 400 W

OPERATING TEMPERATURE: -5 ÷ +40^ at 100 % charge

-5 ÷ +50 °C at 75 % charge

STORAGE TEMPERATURE: -25 ÷ +85^

RELATIVE HUMIDITY: 20 ÷ 95 %

OPERATING VOLTAGE (FROM MAINS): 230 V ac ±15% (47 ÷ 63 Hz), class I

PRIMARY CURRENT (@ 195 V): 3 A

BATTERY VOLTAGE: 48 V dc (4 x 12 V)

AUTHORIZED BATTERY CAPACITY: 38 ÷ 140 Ah

FUSES

F1 (MAINS): 5x20 T8A 250V

F7, F8 (LOAD): 5x20 T12.5A 250V

FBAT (BATTERIES): 10.3x38 20A T

CPR: 0333-CPR-075370-1, 2010

STANDARD REFERENCE: EN 54-4 (1997) + A1 (2002) + A2 (2006)

IMPORTANTE

3D mechanical assembly diagram showing a component with mounting holes and internal structure (no text or symbols)

RACK 19" - 3U

dim.: 483 x 132 x 358 mm - IP 30

Tensione nominale d'uscita: 48 V c.c.

$$ I \max b = I n $$

NESSUNA TENSIONE DI USCITA:

TENSIONE NOMINALE D'USCITA: 48 V c.c.

TENSIONE D'USCITA CON MEZZO CARICO (25°C): 54,4 V c.c. ±0,5%

CORRENTE D'USCITA NOMINALE: 8 A

POTENZA NOMINALE: 400 W

TEMPERATURA DI FUNZIONAMENTO: -5 ÷ +40 °C (ricarica al 100 %)

TEMPERATURA DI STOCCAGGIO: -25 ÷ +85^

UMIDITÀ RELATIVA: 20 ÷ 95 %

TENSIONE DI FUNZIONAMENTO (DA RETE): 230 V c.a. ±15% (47 ÷ 63 Hz), classe I

CORRENTE ASSORBITA (A 195 V): 3 A

TENSIONE BATTERIE: 48 V c.c. (4 x 12 V)

CAPACITÀ BATTERIE CONSENTITA: 38 ÷ 140 Ah

FUSIBILI

F1 (ALIMENTAZIONE DA RETE): 5x20 T8A 250V

F7, F8 (CARICO): 5x20 T12.5A 250V

FBAT (BATTERIE): 10.3x38 20A T

CPR: 0333-CPR-075370-1, 2010

NORMA DI REFERIMENTO: EN 54-4 (1997) + A1 (2002) + A2 (2006)

Except possible errors and omissions.

RCF S.p.A. reserves the right to make modifications without prior notice.

Manufactured by SLAT - 180130008Ba - NOT130003Ba - Ed 01/14