MITSUBISHI ELECTRIC 9900D SERIES UPS
9900D SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
7-8
Table 7.2
UPS Module Fault Code List
Code
indication
(Note 2)
Status
message
Meaning
External relay
contact
(Note 1)
MF103
DC UNDERVOLTAGE
DC voltage dropped below the undervoltage level.
(Detection Level: <630Vdc )
Major
MF104
DISCHARGE FAULT
Capacitor voltage is higher than 100V at 5 minutes
after module stop.
Minor
MF108
CHOP OVERCURRENT
Detection of DC overcurrent.
(Detection Level: 290%peak )
Major
MF109
DC UNBALANCED
Major unbalance of the neutral point voltage.
(Detection Level: dV>150Vdc )
Major
MF110
ZERO PHASE OC.
Major unbalance of the neutral point voltage.
(Detection Level: >50% )
Major
MF111
CTRL.CIRCUIT ERR.
Battery current unbalance.
(Detection Level: dI>25% )
Major
MF112
DC CIRCUIT ABNL.
Sudden change of the DC voltage level.
Major
MF119
DC GROUND FAULT
Detection of DC ground fault.
Major
MF128
CTRL.PWR. ABNL.
Power supply voltage to IGBT driver PCB is below the
specified level.
Major
MF151
BAT.VOLTAGE ABNL.
24 hours after input power restoration, batteries do not
reach float voltage level.
Minor
MF152
BAT.VOLTAGE ABNL.
Unable to equalize the voltage of various batteries
after 24 hours.
Minor
MF154
CB2 ABNORMAL
During UVT, status signal from CB2 is ON.
Minor
MF156
CHG. STOPPED
UF157 failure persisted for over two (2) hours.
Minor
MF157
BATTERY OVERTEMP.
Detection of overtemperature at the batteries.
Minor
MF159
DC GROUND FAULT
Detection of DC ground fault.
Minor
MF160
CTRL.CIRCUIT ERR.
Abnormal behavior of DC current sensor.
Minor
MF161
CHG.STOPPED
UF151 failure is running for over 24 hours.
Minor
MF162
BATTERY ABNORMAL
Failure detection based on battery self-check.
Minor
MF163
BAT.VOLTAGE ABNL.
Battery voltage is abnormal.
Minor
MF179
DC GROUND FAULT
Detection of DC ground fault continued for 5 minutes.
Minor
MF201
INVERTER OV.
Detection of output overvoltage.
Major
Содержание 9900D Series
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