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MegaFlex 1000 to 1600
UPS User Manual / REV-A
Code
Alarm
Description
4301
INVERTER FUSES
The alarm signals an Inverter outlet fuses fault, causing it
to switch off immediately.
It may only be manually switched on after the alarm has
ceased.
4304
K7 CLOSING FAILURE
K7 not closed despite a closing command.
Signaled by auxiliary contact.
Load will be supplied by Utility.
4305
K7 OPENING FAILURE
K7 not open despite an opening command.
Signaled by auxiliary contact.
Load will be supplied by Utility.
4307
INVERTER TRANSFORMER
OVERTEMPERATURE
The temperature sensor of the Inverter Transformer
indicates overtemperature.
Elapsed “stop operation” time, Inverter shut-down.
With Utility OK, Load is transferred on Utility.
4308
DC FUSES FAILURE
Blown input DC fuse(s) F1 of the Inverter.
Inverter cannot be started as long as present.
4309
DRIVER FAILURE
An abnormal condition has been detected on one or more
power modules of the Inverter (temperature or
overcurrent).
Inverter shut-down and cannot be started as long as the
alarm is present.
4310
IGBT RECTIFIER DRIVER FAILURE
Indicates a failure on the driver board or the Rectifier IGBT
bridge. The Rectifier is shut-down.
4311
BOOSTER DRIVER FAILURE
Driver Booster error signal.
4312
INVERTER VOLTAGE OUT
OF TOLERANCE
Inverter Output Voltage is out of the tolerances (
±
10%).
Inverter is switched OFF.
4320
ISMAX DETECTION
Detection of Inverter Bridge (Is) current limit causing the
Inverter OFF and automatic re-start.
After 3 times the Inverter switches-Off and it can be
restarted manually.
4321
HIGH CURRENT SHARING
A high exchange current value is detected between the UPS
of the RPA Parallel System.
4340
INVERTER CONTROL FAILURE
The “Slave” oscillator is not in synchronized with the
Master; thus causing the shut-down of its Inverter.
If after a restart the condition remains, the LED inside the
Inverter symbol on the panel will not light up, indicating
that this Inverter cannot supply the Load anymore.
4400
BYPASS FUSES FAILURE
Auxiliary contact signal (normally closed) indicates that one
fuse of the Bypass Utility (F16/17/18) is open.
4404
K6 CLOSING FAILURE
K6 open despite a closing command being issued.
Signaled by auxiliary contact.
The Load cannot be supplied by Automatic Bypass.
4405
K6 OPENING FAILURE
K6 closed despite an opening command being issued.
Signaled by auxiliary contact.
4406
SSM FAILURE
A faulty current has been detected in the static-switch
causing the opening of the contactor K6 for 10 seconds.
After 3 times K6 remains definitively open.
Only an ABB Service Technician can reset the alarm.
4410
BYPASS UTILITY OUT OF TOLERANCE
The Utility Bypass Voltage is out of the tolerances (
±
10%).
K6 opens, synchronization with Utility is inhibited and
transfer to Utility is blocked.
4420
K3 CLOSING FAILURE
K3 open despite a closing command.
Inverter is switched OFF.
It can be restarted manually after recovery of the alarm
condition.