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UPS user manual
102
Rev.A 05/15/2012
Alarm
A28
CRITICAL FAULT
Description
An alarm has been activated which causes the shutdown of part of the
UPS (rectifier, inverter, static switch).
Possible
causes
System failure.
Solutions
1. Check which alarms are present and carry out the indicated
procedures.
2. If the alarm persists, contact our Technical Support Service.
Alarm
A29
MAINTENANCE REQ
Description
It is necessary to carry out maintenance work.
Possible
causes
The time limit since the last maintenance work has elapsed.
Solutions
1. Contact our Technical Support Service.
Alarm
A30
COMMON ALARM
Description
Common alarm.
Possible
causes
At least one alarm is present.
Solutions
1. Check which alarms are present and carry out the indicated
procedures.
Alarm
A31
MBCB BUS CLOSED
Description
The manual bypass isolator is closed.
Possible
causes
Manual bypass isolator closed.
Solutions
1. Check the status of the manual bypass isolator.
2. Check the functionality of the auxiliary contact of the isolator.
3. If the alarm persists, contact our Technical Support Service.
Alarm
A32
EPO BUS CLOSED
Description
The system is blocked due to the activation of the emergency power off
button.
Possible
causes
Activation of the (local or remote) emergency power off button.
Solutions
1. Release the emergency power off button and reset the alarm.
2. If the alarm persists, contact our Technical Support Service.
Содержание PEGASUS II 10 KVA
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