Emerson Series 610 manual Alarm and Status Messages Module Status Messages, System Status Messages

Operation

3.2.14Alarm and Status Messages

Module Status Messages

The module status messages indicate how many UPS modules are included in the system and the present status of each module.

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

1.MOD N: A module status message line is displayed for each UPS module in the system. Up to six

(6) modules may be included in a multi-module system. The N in the message will indicate a specific UPS module number, 1 through 6.

2.ON LINE: The UPS module output circuit breaker is closed and power from the module is available to the SCC. The module output is sharing the critical load if the UPS Output Breaker is closed.

3.OFF-LINE:The UPS module output circuit breaker is open. More specific alarm messages are displayed at the UPS module.

4.SUM ALM: The Module Summary Alarm has been activated by one of the alarm messages listed in two tables—SCC and module remote monitor indications and Other alarms that activate summary alarms—in 3.2.6 - System Configuration Screens. The specific alarm message is displayed at the UPS module.

5.COM FAIL: The UPS module is not communicating with the SCC. This could mean loss of power to the UPS module controls, a disconnected cable or a control logic failure (detected by watchdog timer. Call Liebert Global Services if you require assistance. To resume communication after control power is restored, sequence display to Master Menu.

Figure 51 SCC status and alarm message areas

BYPASS INPUT A-B B-C C-A

0V 0V 0V

0 Hz

UPS INPUT PWR A-B B-C C-A

0V 0V 0V

MOD 1 ON LINE SUM ALM MOD 2 ON LINE SUM ALM MOD 3 ON LINE SUM ALM

© 1989-2003

UPS RATINGS

SCCT 1600

OUTPUT VOLTAGE

A-B B-C C-A

480V 480V 480V

60.0 Hz

Not OK to Transfer

Static Switch Connected

LOAD

627 KVA / 502 KW A B C 755A 755A 755A

3 OF 3 MODULES

CONNECTED

REDUNDANT Time To Overload Transfer: XXXX SEC

Byp Not Avail

Static Sw Unable

Module Sum Alm

MODULE STATUS	SYSTEM STATUS	LOAD BLOCK	ALARM
MESSAGES	MESSAGES	MESSAGES	MESSAGES

System Status Messages

The system status messages indicate whether the static bypass switch is connected or disconnected, through the manually operated Static Switch Disconnects (see Figure 9). The status messages also advise the operator when a transfer or retransfer between the UPS system and bypass line is per- mitted, 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 system 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 system is not permitted. Emergency or overload transfer to bypass may still be available provided the “Static Switch Unable” alarm is not indicating.

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