ELP LDCB110 – Central Battery LED Emergency Control Gear

LDCB110 Common Data

Environmental

Protection against electric shock Basic Insulation
Ingress protection IP20
Module rated operating ambient temperature -20°C to 50°C
Maximum case temperature 65°C

Mains operation

Rated voltage supply 220/240 VAC
Mains frequency 50/60 Hz
Mains supply current 10mA
Mains supply power 2.4W
Power factor 0.6
Maximum power that can be switched via relay contacts 125VAC/90W
Maximum current that can be switched via relay contacts 1A 125VAC/3A 30VDC
Maximum voltage that can be switched via relay contacts 250VAC/220VDC

Emergency operation

Emergency duration Dependent on Central Battery System
Central Battery voltage supply range 110V±10% AC/DC
Module selectable output current and voltage range
LDCB110 — 50mA 15V to <100V
LDCB110 — 100mA 15V to <50V
LDCB110 — 200mA 15V to <25V
BLF/EBLF — Dependent on LED module type 0.12 to 0.25

Mechanical

Outside dimensions (L)178mm x (W)30mm x (H)21mm
Fixing centres 170mm
Electrical connections Push wire terminals

LDCB110 Standards compliance

EN61347-1, EN61347-2-7 and EN61347-2-13 Yes
EN62384 Yes
EN61547 Yes
Marks CE Yes

To ensure the correct operation of each type of high power LED module/array the correct output current should be selected on the module (see output current and operating voltage details on the following table).

In emergency lighting, Central Battery Systems (CBS) use slave and hold-off modules to manage lighting without requiring a battery at every fixture. These modules ensure that designated emergency lights turn on only when local power fails, bypassing the building’s standard wall switches.

1. Slave Modules

A slave luminaire (or slave unit) has no local battery or on/off decision-making ability. It receives power from a centralized battery bank and inverter system.

Operation: The slave module sits in-line with the light fixture. When a localized or building-wide power failure occurs, the central battery kicks in, and the slave module directs this emergency power (usually 50V, 110V, or 240V AC/DC) to illuminate the dedicated emergency LED or lamp.

Benefit: Because the batteries are centralized in one cabinet, maintenance is drastically simplified. You only have to test and replace batteries at the central hub rather than across hundreds of individual ceiling fixtures.

2. Hold-Off Modules

A hold-off module (or hold-off relay) is used in conjunction with “switched maintained” lighting circuits. It prevents an emergency light from needlessly turning on during a standard power outage if the light was purposely turned off.

Operation: The module requires two power feeds: an un-switched mains feed (for emergency detection) and a switched mains feed (for standard on/off room control). If the general power goes out, but the room’s light switch was off, the hold-off module detects this and keeps the emergency light “held off” to conserve central battery power. As soon as local power fails while the light is active (or if the fire alarm triggers), the relay releases and the emergency light turns on.

Benefit: It allows standard, everyday luminaires to double as emergency exit lights without shining when the building is unoccupied and the lights are turned off.

Established in 1995 and based in the South-East, we are a team of experts with unrivalled knowledge and experience in safety lighting products, devices, and electronic circuits. We hold a vast range of stock onsite which means no long lead times for your commercial project. Therefore, if we have the products in stock that you need, we aim to get them to you the very next day.

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