legrand ELCU-100 Emergency Lighting Control Unit Instruction Manual
- June 9, 2024
- Legrand
Table of Contents
No: 24868 – 04/22 rev. 1
Wattstopper ®
Emergency Lighting Control Unit
Installation Instructions
Catalog Number : ELCU-100
Country of Origin: Made in China
SPECIFICATIONS
Voltages …………………………………………… 120/277VAC 50/60Hz
Max Load Requirements
Ballast ……………………………………………….. 20A @277VAC
Incandescent ………………………………………. 10A @120VAC
Motor ………………………………………………… 1HP @120VAC
Remote Activation ………….24VDC sourced, dry contact closure
Integral Control ……………………………Push-to-Test button on unit
Conformance …….. UL924, NEC, OSHA, NFPA life safety codes
Environment …………………………….32º-122ºF (0º-50ºC) Ambient
Terminal Torque …………………..4.428 inch pound-force (0.5Nm)
Dimensions …………………………………………. 2.78” x 3.44” x 2.63”
……………………………… (70.61mm x 87.38mm x 66.80mm)
DESCRIPTION AND OPERATION
The ELCU-100 Emergency Lighting Control Unit allows lighting control devices
for normal lighting to also control emergency lighting installed within the
area. The ELCU is designed for lighting control in areas where emergency
lighting fixtures are connected on dedicated emergency lighting circuits that
are typically ON 24 hours per day. The ELCU allows ON/OFF control of the
emergency lighting along with the normal room lighting to save energy.
The intended operation of the ELCU is to guarantee that the emergency lighting
is ON whenever normal power to the controlled circuit is interrupted. While
normal power is present, the ELCU allows control of the emergency lighting by
a device such as an occupancy sensor, a relay, a dimmer, or a wall switch.
WARNING: TURN THE POWER OFF AT THE CIRCUIT BREAKER BEFORE WIRING.
Important Safeguards
When using electrical equipment always follow basic safety precautions:
- READ AND FOLLOW ALL SAFETY INSTRUCTIONS–SAVE THESE INSTRUCTIONS
- Mount only in an industrial control panel with a DIN rail mounting system.
- Do not use near gas or electric heaters.
- Equipment should be mounted in locations and at heights where it will not readily be subjected to tampering by unauthorized personnel.
- Use of accessory equipment not recommended by the manufacturer may cause an unsafe condition.
- Do not use this equipment for other than intended use.
WIRING
Wiring Notes
- You can connect as many NC contacts (including LMTS-100) in series on the jumper loop wire as you want to a single ELCU. You cannot connect the NC devices in any other manner.
- At no time can more than 5 ELCU devices can be controlled together by commoning their Test Loop wires to a Normally Closed Test Switch (LMTS) and/or other NC contact closure.
- If connecting ELCUs together via their test loop wires, you must maintain the polarity of their wires.
INSTALLATION
- ELCU units should be installed in accordance with state, local and national electrical codes and requirements.
- ELCU units are designed to attach to lighting control panels or electrical enclosures that are fitted with a DIN-rail, such as a Wattstopper accessory enclosure (LS-E8, LS-E12), or any Wattstopper lighting control panel fitted with the DIN rail mounting option.
- ELCU units operate with power provided by two sources. Place a warning label on each enclosure that contains an ELCU unit.
Installation Procedure
- Snap the unit onto the DIN-rail. A distinct click indicates the unit is locked in place. If more than one unit is being installed in the same enclosure, mount the units so the emergency power connections for all the units are on the same side to maintain separation of normal and emergency wiring.
- Connect the ELCU to the emergency lighting for the area controlled. Connect the Line In and Load Out terminals on the ELCU in series with the emergency lighting load as shown in the wiring diagram. Connect the neutral for the emergency circuit to the Emergency Power Neut terminal as shown in the wiring diagram.
- Connect the ELCU to the control device for the area controlled. Connect the Normal Power side of the ELCU to the normal lighting circuit as shown in the wiring diagram. Note that the Line In connection should be made to the line side of the control device that serves the same area as the emergency lighting. This ensures that the emergency lighting turns ON during a localized power failure affecting only the portion of the building where the ELCU is installed.
TESTING
Initial testing should be done with the Remote In/Remote Out jumper in place to limit the possibility of a remote device affecting the testing.
- Turn ON the circuit breaker in the emergency panel for the controlled circuit. The green LED on the ELCU should glow. With only the emergency circuit ON (normal power OFF) the emergency lighting should be ON.
- Temporarily disconnect and cap the wire connected to the Switch In terminal on the ELCU. This disables the normal control function and allows definitive testing of the fail-to-ON functionality.
- Turn ON the circuit breaker in the normal panel for the controlled circuit. The amber LED glows indicating that normal power is present and that emergency lighting is not required. The emergency lighting should turn OFF. Confirm the automatic emergency ON functionality by turning OFF the normal circuit breaker. The emergency lighting should immediately turn ON.
- With the normal circuit breaker OFF, re-connect the wire to the Switch In terminal. Turn ON the normal circuit breaker. The control device now controls both the normal and emergency lighting together.
Remote Activation Test
- Connect the Remote In and Remote Out terminals on the ELCU to the single pole contacts on the remote device or test switch. With the remote device in normal mode (contacts closed) the red LED on the ELCU is ON and the unit operates just as it did with the factory jumper installed.
- When the remote device activates (for example, push the test switch) the red LED extinguishes, indicating a true test condition.
The ELCU is forced into the emergency ON mode and the green LED glows brightly.
WARRANTY INFORMATION
Wattstopper warranties its products to be freeof defects in materials and workmanship for aperiod of five (5) years. There are no obligationsor liabilities on the part of Wattstopper forconsequential damages arising out of, or inconnection with, the use or performance of thisproduct or other indirect damages with respectto loss of property, revenue or profit, or cost ofremoval, installation or reinstallation.
No. 24868 – 04/22 rev. 1
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