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3. Connect the ELCU to the control device for the area controlled. Connect the ELCU's Normal wiring leads to the normal lighting
circuit as shown in the wiring diagram. Note that the Normal Power Sense 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 in the controlled
area turns ON during a localized power failure such as a tripped branch circuit breaker.
Installing the Optional Remote Activation Device
The ELCU provides leads for connection of a remote device that can force the unit into the emergency ON mode. The leads are in the
form of a factory installed jumper loop (blue wire) on the ELCU. When the loop is complete, it disables this function. Do not cut 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, the blue wire leads 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. Perform initial testing before cutting the blue wire jumper loop.
2. Cut the blue wire jumper loop.
3. Connect the two resulting leads 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.
An alternate method of breaking normal power to invoke emergency operation can also be used. An example of this would be to feed all
ELCU devices from a single breaker
Initial testing should be done with the blue wire jumper loop intact 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. Press and release the local test button to simulating
emergency activation. With only the emergency circuit ON (normal power OFF) the emergency lighting should be ON. After 5
seconds, the relay will return to the normal operating state. Alternatively, press the button a second time during the five seconds to
return to normal.
2. Temporarily disconnect and cap the wire connected to the Normal Switch Sense lead 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 red 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 lead. Turn ON the normal circuit breaker. The control
device now controls both the normal and emergency lighting together.
5. The Red LED identifies the current operating mode of the ELCU, as described in the following table
Device State
Power Off
Power ON (Sense inactive)
Power ON (Sense active)
FFC/Test (Open Circuit)
Remote Activation Test
1. Cut the blue wire jumper and connect the leads 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 loop intact.
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 red LED is ON.
TESTING
Relay
LED
State
ON
OFF
OFF
Periodic Blink
ON
ON (Solid)
ON
ON (Solid)
3
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