Owner's manual

Argus Technologies Ltd. 010-592-C0 Rev G WC

6 Operation

6.1 Start-up

1. Apply AC power by a) plugging the unit into AC power outlet, b) turning on the AC feeder breaker, or

c) connecting the IEC (option) to specified source.

2. Verify no alarms are active and the green power indicator is lit.

3. Connect the DC load.

4. Secure the FMPS cover with a padlock or a wire utility tie.

6.2 Normal Operation

Under normal operating conditions, the FMPS delivers 55Vdc (nominal) power for up to two loads. The green

System LED remains lit.

6.3 Status LEDs

The FMPS is equipped with three status LEDs. Refer to the following table:

System (GREEN): Indicates normal mode of operation.

Battery (YELLOW): Indicates power supply is operating from

the battery pack.

Replace Battery (RED): Battery replacement required.

Silence

Alarm

Silence Alarm: Press and hold button one time for 1/2 second

to silence the audible alarm for 24 hours.

Table B–LED and alarm indications

6.4 Battery String LEDs

The FMPS is equipped with two battery string LEDs. The LEDs light when a battery test has failed, suggesting

that battery capacity has fallen below 70 percent.

NOTE: If a single string of batteries is used, the FMPS will report a Battery Missing alarm. This is a normal condition

when using a single battery string.

6.5 AC Fail Alarm

The FMPS sets an AC Fail alarm during an AC line outage or brownout when the AC supply voltage is insufficient

to maintain battery charge. To prevent nuisance alarms and consequent service disruptions, the FMPS monitors

the battery status and sets the alarm when the battery is discharging. Depending on load conditions, it may take

several minutes. The alarm is cleared when the battery receives a consistent charge.

The FMPS also indicates the AC Fail alarm when AC is present, but the system is overloaded to the point that

batteries are required to supplement the power supply in meeting load requirements. If an AC Fail Alarm is

indicated despite a solid AC line voltage, then verify the load is within specification and lead lengths and wire

sizes are accordant with the installation instructions.