4
During normal operation, AC power is supplied to the AC ballast/driver through the backup micro inverter and the inverter charges
the battery. Connecting the inverter connector wires (red and white) enables the emergency circuit and supplies power to the con
-
trol/monitor circuit. The backup micro inverter detects AC input line voltage (120/277) and automatically sets the output voltage
during emergency mode.
When AC power fails, the backup micro inverter automatically switches to emergency mode, keeping the load illuminated for a
minimum of 90 minutes. When AC power is restored, the backup micro inverter returns to charging mode. The backup micro inverter
consists of a low-battery voltage disconnect which is reset when AC power is restored. The unit can also detect an abnormal load
condition (open or shorted load) during emergency mode operation and will protect the inverter from damage.
Although no routine maintenance is required to keep the backup micro inverter functional, it should be checked periodically to
ensure that it is working.
The following schedule is recommended:
1. Visually inspect the charging indicator light monthly. It should be illuminated.
2. Test the emergency operation of the fixture at 30-day intervals for a minimum of 30 seconds. The lamp
should operate at full illumination.
3. Conduct a 90-minute discharge test once a year. The lamp should operate at full illumination for at
least
90
minutes.
! reFer any servicing inDicateD By these checKs to qUaliFieD personnel !
OPERATION
MAINTENANCE
BLACK (120/277 VAC UNSWITCHED)
WHT/RED (120/277 VAC SWITCHED)
Note: Make sure the
necessary branch circuit
wiring is available. An
unswitched source of
power is required. The
unswitched and switched
power sources must be
fed from the same
branch circuit.
WHITE (NEUTRAL)
WALL
SWITCH
AC
BALLAST/DRIVER
WITH LAMP
TEST
SWITCH
BACKUP
MICRO INVERTER
VIOLET
BROWN
CHARGING
INDICATOR
LIGHT
ORG/BLK (AC BALLAST/DRIVER HOT 120/277 VAC)
YEL/BLK (AC BALLAST/DRIVER NEUTRAL)
Note: Wire AC electronic
ballast according to
manufacturers
installation instructions.
INVERTER
CONNECTOR
RED
WHITE
WIRING DIAGRAM
BACkUP MICRO INVERTER AND AC BALLAST/DRIVER MUST BE FED FROM THE SAME BRANCH CIRCUIT
TYPICAL SCHEMATICS ONLY. CONSULT THE FACTORY FOR OTHER WIRING DIAGRAMS.