Wattstopper
®
Emergency Lighting Control Unit
Installation Instructions • Instructions d’Installation • Instrucciones de Instalación
No: 24868 – 10/17 rev. 1
Catalog Number • Numéro de Catalogue • Número de Catálogo: ELCU-100
Country of Origin: Made in China • Pays d’origine: Fabriqué en Chine • País de origen: Hecho en 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.
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.
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WIRING
Normal Neutral
Normal Line
ELCU-100
06278r1
Remote
In
Remote
Out +24vdc
Normal
Power
Line
In
Switch
In
Neut
Line
In
06279r1
Line
Out
Neut
Emergency
Power
Control
Device
Normal
Lighting
Emergency Neutral
Emergency Line
Normally Closed
• Te st Switch
• Fire
Alarm Panel
• Security Panel
• Other
Emergency Lighting
Normal Neutral
Normal Line
ELCU-100
06278r1
Remote
In
Remote
Out +24vdc
Normal
Power
Line
In
Switch
In
Neut
Line
In
06279r1
Line
Out
Neut
Emergency
Power
Dimmer
Emergency Neutral
Emergency Line
Jumper Wire or
Normally Closed
• Test Switch
• Fire
Alarm Panel
• Security Panel
• Other
Normal Lighting
“Sensing”
Line
Dimmer
Emergency Lighting
Standard wiring for switched control of
emergency lighting along with normal lighting
Alternate wiring for dimmer bypass on an emergency circuit
WARNING: TURN THE POWER OFF AT THE
CIRCUIT BREAKER BEFORE WIRING.
Wiring Notes
1. 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.
2. 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.
3. If connecting ELCUs together via their test loop wires, you must maintain the polarity of their wires.
800.879.8585
www.legrand.us/wattstopper
No. 24868 – 10/17 rev. 1
© Copyright 2017 Legrand All Rights Reserved.
© Copyright 2017 Tous droits réservés Legrand.
© Copyright 2017 Legrand Todos los derechos reservados.
Wattstopper warranties its products to be free
of defects in materials and workmanship for a
period of five (5) years. There are no obligations
or liabilities on the part of Wattstopper for
consequential damages arising out of, or in
connection with, the use or performance of this
product or other indirect damages with respect
to loss of property, revenue or profit, or cost of
removal, installation or reinstallation.
Wattstopper garantit que ses produits sont
exempts de défauts de matériaux et de fabrication
pour une période de cinq (5) ans. Wattstopper
ne peut être tenu responsable de tout dommage
consécutif causé par ou lié à l’utilisation ou
à la performance de ce produit ou tout autre
dommage indirect lié à la perte de propriété, de
revenus, ou de profits, ou aux coûts d’enlèvement,
d’installation ou de réinstallation.
Wattstopper garantiza que sus productos
están libres de defectos en materiales y mano
de obra por un período de cinco (5) años. No
existen obligaciones ni responsabilidades por
parte de Wattstopper por daños consecuentes
que se deriven o estén relacionados con el
uso o el rendimiento de este producto u otros
daños indirectos con respecto a la pérdida
de propiedad, renta o ganancias, o al costo
de extracción, instalación o reinstalación.
WARRANTY INFORMATION INFORMATIONS RELATIVES À LA GARANTIE INFORMACIÓN DE LA GARANTÍA
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
1. 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.
2. 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.
3. 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.
Installing the Optional Remote Activation Device
The ELCU provides terminals for connection of a remote device that can force the unit into the emergency ON mode. A factory installed
jumper connected between the Remote In and Remote Out terminals on the ELCU disables this function. Do not remove this jumper
unless remote activation is desired. The device that provides remote activation of the emergency ON mode must provide a normally
closed, maintained contact dry contact closure. The remote device opens the contacts to force the ELCU into the emergency ON mode.
The most common remote device is a test switch that is installed in an accessible location. Alternately, these terminals can be used to
allow another system such as a fire alarm or security system to force the ELCU into the emergency ON mode.
1. Remove the factory installed jumper from the Remote In and Remote Out terminals.
2. Connect the Remote In and Remote Out terminals on the ELCU to the single pole contacts on the remote device or test switch.
The device must provide normally closed, maintained contact dry contact closure. The remote device opens the circuit in order to
force the ELCU into the emergency ON mode.
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.
1. 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.
2. 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.
3. 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.
4. 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
1. 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.
2. 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.
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