APC DP300E manual Possible alarms, Possible alarm Description Action

Possible alarm

Description

Action

1.

Peak current limiter active

Peak current limiter has

Check for blown

been activated and UPS

fuses in your

switched to bypass opera-

installation

tion. System overloaded

2.

Bypass power supply fault

Fault in redundant PSU

Call for assistance

for bypass. UPS has still

100% performance and can

operate in all modes

3.

Delta current limiter active

Input current limiter has

Check for overload.

been activated and UPS

If repetitiv – call for

switched to bypass opera-

assistence

tion

4.

Fan fault

Blocked or faulty fan

Remove blocking or

call for assistance

5.

High DC warning

Switching off big output load

If repetitive reduce the

load change

6.

High DC shutdown

Fault in UPS

Call for assistance

7.

Off button pushed

Off button or emergency

–

power down activated

8.

Synchronization error

The UPS can’t synchronize

Check if phase

to the input frequency

rotation of main input

voltage is correct – if

OK call for assistance

9.

Inverter voltage error

Inverter average voltage out

–

of limits (normal message

during starting up/switching

off the system)

10.

Parallel sync. error

Parallel UPS’s are not able

Check external

to synchronize

parallel cables

Call for assistance

11.

Inverter current limiter

Overload on inverter

Reduce UPS output

active

load

12.

Overload Load is over

Overload on UPS

Reduce UPS output

100%

load

13.

Second power supply fault

Fault in UPS

Call for assistance

(Only in systems >160kW)

14.

Internal power supply fault

Fault in UPS. Only bypass

Call for assistance

operation possible

15.

Battery MCB is off

Battery MCCB switch not

Close MCCB.

closed or released.

If released again

– call for assistance

16.

** Q004 off **

Position of output switch for

–

UPS in parallel

17.

** Q003 on **

Position of external bypass

–

switch

18.

** Q002 off **

Position of UPS output

–

switch

19.

** Q001 or Q010 off **

Position of UPS input switch

–

7OA0002 US rev. 04

User Guide Silcon DP300E Series 480V 240-320kVA

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