Alarms

NOTE:

Utility = Mains

Possible alarm

Description

Action

39.

System is locked in oper.

UPS has attempted 10 times

If the system is locked in

 

mode

within 1 min. to switch from

bypass operation and the

 

alarm “Inverter voltage

 

 

bypass to battery operation

 

 

error” exists in the alarm

 

 

or “High DC warning” has

 

 

stack do not try to unlock

 

 

appeared 10-20 times within

the operations mode lock

 

 

1 min.

but - call for assistance!

 

 

 

40

RAM1 memory write error

Fault in UPS

Call for assistance

41.

Memory write error

Fault in UPS

Call for assistance

42.

Communication to VQ

Fault in UPS

Call for assistance

 

bypass lost

 

 

 

 

 

 

43.

Communication to VQ

Fault in UPS

Call for assistance

 

output lost

 

 

44.

Communication to DMU

Fault in UPS

Call for assistance

 

lost

 

 

45.

Communication to control-

Fault in UPS. Display will

Call for assistance

 

ler lost

show invalid data for UPS

 

 

 

 

 

46.

Communication to parallel

Fault in UPS

Call for assistance

 

IF lost

 

 

47.

External shutdown

Remote signal for switching

 

accepted

off the UPS accepted – UPS

 

 

 

switches off itself

 

48.

DC capacitor charge error

Fault in DC charge circuit

Do NOT close

 

 

 

external MCCB due to

 

 

 

preventing damage of

 

 

 

UPS system.

 

 

 

Call for assistance

 

 

 

 

49.

Communication to VQ

Fault in UPS

Call for assistance

 

mains lost

 

 

50.

Bypass sync error

The UPS cannot synchronize

Check if phase rota-

 

 

to the bypass utility

tion of bypass voltage

 

 

 

is correct - if OK, call

 

 

 

for assistance

 

 

 

 

7OA0004 US rev. 02

User Guide Silcon DP300E Series 480V 400-500kVA

29

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Image 29
APC DP300E Series manual System is locked in oper UPS has attempted 10 times