Clary CMN2400D-PD - Manual (Page 10)

Page 10
SUMMARY OF INDICATORS AND CONTROLS
UPS FRONT PANEL
INPUT POWER SWITCH - This is system input AC power protection and interruption for both hot
and neutral lines. This is a circuit breaker that if tripped, unit operation will continue on battery reserve.
This circuit breaker is rated at 30A and is guarded to prevent inadvertent operation.
SYSTEM ON/OFF SWITCH - This is system input enable switch. This switch is used to power
down the system. This switch must be in the ON position in order to AC or DC start the UPS.
AC INPUT LED - A green L.E.D. that is illuminated when the INPUT POWER Circuit Breaker is closed
and there is AC input power available to the UPS.
LOAD LEDs - Four green L.E.D.s and one red OVERLOAD L.E.D. that illuminate to update status of
the amount of load the INVERTER is powering at the UPS system output. Each green L.E.D. represents
approximately 25% of full load. As more load is added to the UPS, the L.E.D.s will sequentially turn "ON"
until the red L.E.D. comes "ON". This indicates an OVERLOAD situation and the system will discontinue
operation shortly.
BATTERY LEDs - Four green L.E.D.s and one green LOW BATTERY L.E.D. that illuminate to update
status of the battery energy available during a power outage. Each green L.E.D. represents
approximately 20% of battery reserve power available. As battery discharge continues, the L.E.D.s will
sequentially turn "OFF" until the last L.E.D. starts to flash. This indicates a LOW BATTERY situation and
the system will discontinue operation shortly. Once utility power is returned to the system, this bar graph
will show an approximate battery state as it reaches full charge. The top L.E.D. indicates charger on/off
when unit running on AC. L.E.D. ON Charger OFF, L.E.D. OFF Charger ON.
AC IN OK LED - A green L.E.D. that is illuminated when the AC input is within operating limits. Upon
startup of the UPS, good utility power is approx. 100Vac-130Vac. Once UPS is running, range would be
approx. 85Vac-155Vac.
ON BATTERY LED - A red L.E.D. that is illuminated when the AC input is interrupted to the power
electronics either externally or internally from the microprocessor due to an out-of-range situation. The
output load is then supported entirely by battery energy through INVERTER operation.
AC OUTPUT LED - A green L.E.D. that illuminates when the INVERTER generator is operating and
available to deliver power to the system output.
COLD START SWITCH - This is a momentary, push button switch. If no AC utility voltage is
available, it may still be a requirement to initialize some equipment. When this switch is pressed in for at
least two seconds, the system will start up on battery power. The SYSTEM ON/OFF Switch on the Front
Panel of the unit and the POWER Switch on the Control Panel must be in the ON position for this function
to operate. The green L.E.D. above this switch will light only while the switch is held in.
COLD START LED - A green L.E.D. that illuminates when the cold start switch is pressed.
LOAD ON/OFF SWITCH - Push button switch that enables output circuits when turned ON, disables
output circuits when turned OFF.
BYPASS LED - A red L.E.D. above the LOAD ON/OFF SWITCH will light to indicate when the system
output is operating in the filtered, emergency BYPASS mode. This is an unprotected power source that
will not support the load in the event of a power failure.