Liebert 610 manual Alarm and Status Messages Status Messages, Alarm and status message screen

Operation

3.2.13Alarm and Status Messages Status Messages

The status messages indicate whether the static bypass switch is connected or disconnected. The sta- tus messages also advise the operator when a transfer or retransfer between the UPS and bypass line is permitted, based on matching voltage, frequency and phase.

The following status messages may appear in the system status area.

1.Static Switch Connected. The static switch is connected (the disconnect switches are closed— ON) and is ready to provide a current path from the bypass input to the load.

2.Static Switch Disconnected. The static switch is disconnected (the disconnect switches are open—OFF) for maintenance procedures.

3.OK to Transfer. The UPS system voltage, frequency and phase match the bypass line. This means that a transfer between the bypass line and the UPS is permitted.

4.Not OK to Transfer. Either the UPS or bypass voltage, frequency or phase is not within the specified limits or the static bypass switch is not available. Therefore, manually initiated transfer between the bypass line and the UPS is not permitted. Emergency or overload transfer to bypass may still be available provided the “Static Switch Unable” alarm is not indicating.

5.Time to Overload Transfer. During an overload condition, the time remaining before transfer (in seconds) is displayed at the bottom of the load block.

Figure 40 Alarm and status message screen

BYPASS INPUT A-B B-C C-A 0V 0V 0V 0 Hz

UPS INPUT PWR

A-B B-C C-A 480V 480V 480V 0A 0A 0A

BATTERY

VOLTS 480

AMPS 645 DISCHARG

© 1989-2003

UPS RATINGS

AP658-64
RATED 500 KVA
OUTPUT VOLTAGE
A-B	B-C	C-A

480V 480V 480V

60.0 Hz

Not OK to Transfer

Static Switch Connected

	LOAD
270 KVA / 217 KW
A	B	C
325A	325A	325A
Time To Overload
Transfer: XXXX SEC

Byp Not Avail

Input Fail

Batt Discharging

STATUS	ALARM
MESSAGES	MESSAGES

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