Apc SILCON 60-80KW 208/480V UPS User Manual download pdf (Page 25)

Alarms and Events

990-4035

User Guide APC Silcon 60-80kW 208V/480V UPS 25

5.3 Possible Alarms

NOTICE!

Please note mains = utility

Alarms Description Action

1. Peak current limiter active Peak current limiter activated and

UPS switched to bypass

operation.

System overload

Check for blown fuses in

installation

2. Bypass power supply fault Fault in redundant PSU for

bypass. UPS still 100% able to

operate in all modes.

Call for assistance

3. Delta current limiter active Input current limiter activated and

UPS switched to bypass

operation

Check for overload.

If message is repetitive -

call for assistance

4. Faulty fan Blocked or faulty fan Remove blocking or replace fan

5. High DC warning Switching off big output load If alarm is repeated, reduce load

change

6. High DC shutdown UPS fault Call for assistance

7. Off-button activated Off button or emergency power

shut down activated

–

8. Synchronization error UPS unable to synchronize with

input frequency

Check if phase rotation of mains

input voltage is correct. If OK, call

for assistance

9. Inverter voltage error Inverter average voltage outside

limits (normal message during

system start-up/switch-off

–

10. Parallel synchronization

error

Parallel UPS unable to

synchronize

Check external parallel cables -

call for assistance

11. Inverter current limiter active Inverter overload Reduce UPS output load

12. Overload. Load exceeding

100%

UPS overload Reduce UPS output load

13. Second power supply fault UPS fault

(only systems > 160kW)

Call for assistance

14. Internal power supply fault UPS fault. Only bypass operation

possible

Call for assistance

15. Battery MCCB is off Battery MCCB/fuse not closed or

released

Close MCCB / insert new fuse. If

released again -

call for assistance.

16. **Q004 off** Output switch position for UPS in

parallel

–

17. **Q003 off** External bypass switch position –

18. **Q002 off** UPS output switch position –

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Apc SILCON 60-80KW 208/480V UPS User Manual Page 25

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