Toshiba G2020 Series Installation And Operation Manual page 71

Code
LCD Screen Status
indication
Message
(Note 3)
EMERGENCY
UA817
STOP ACTIVATED
TRANSFER
UA821
INHIBITED
TRANSFER
UA822
INHIBITED
UA824 CB2 OPEN
52C OPE.
UA827
INHIBITED
EMERGENCY
UA831 BYPASS SWITCH
ON
UA833 52L OPEN
BATTERY
UA834 DEPLETED/AC OUT
STOPPED
TRANSFER
UA835
INHIBITED
CONVERTER OPE.
UA841
INHIBITED
REMOTE BUTTON
UA860
ABNORMAL
LOCAL BUTTON
UA861
ABNORMAL
BALANCER
UA870
OVERLOAD
UA890 EXTERNAL ALARM
INPUT CIRCUIT
UF001
ABNORMAL
CONVERTER
UF002
OVERCURRENT
CONVERTER
UF003
ABNORMAL
CONVERTER
UF004
OVERCURRENT
UF011 CB1 ABNORMAL
UF052 CB1 ABNORMAL
CONVERTER
UF056
OVERCURRENT
CONVERTER
UF057
OVERCURRENT
INPUT CIRCUIT
UF059
ABNORMAL
UF102 DC OVERVOLTAGE
DC
UF103
UNDERVOLTAGE
CHOPPER
UF108
OVERCURRENT
UF109 DC UNBALANCED
ZERO PHASE
UF110
OVERCURRENT
G2020 Series UPS Installation and Operation Manual – 94861-004
Meaning
The emergency stop was activated
by the EPO switch or an external
contact.
The UPS cannot transfer to the
bypass because the inverter output
is not synchronized to the bypass.
The UPS cannot transfer to the
bypass because of backup
generator operation.
The battery circuit breaker (CB2) is
open.
The interlock for the inverter output
contactor (52C) is active.
Emergency bypass switch has been
turned on.
The load circuit breaker (52L) is
turned off.
The battery voltage has reached the
depleted level.
The UPS could not transfer to the
bypass because the bypass source
has an abnormality.
The interlock for the converter input
contactor (CB1) is active on external
input.
Remote start signal is being
received continuously for a
considerable time.
Local start or stop signal is being
received continuously for a
considerable time.
The UPS detected a neutral point
voltage unbalance.
External Alarm relay turned on.
Detection of a large variation of the
reference error signal.
Detection of converter overcurrent.
Pre-charging circuit is not working
properly.
Detection of converter overcurrent.
Major discrepancy between
reference signal and actual state of
contactor CB1.
Minor discrepancy between
reference signal and actual state of
contactor CB1.
Detection of converter overcurrent.
Detection of converter overcurrent.
Detection of a large variation of the
reference error signal.
DC voltage surpasses the
overvoltage level.
DC voltage dropped below the
undervoltage level.
Detection of DC overcurrent.
Major unbalance of the neutral point
voltage.
Detection of converter
zero-sequence overcurrent.
Recommended
Buzzer
Action
- -
- -
- -
Intermittent
TURN ON CB2
sound
Intermittent
-
sound
Intermittent
-
sound
Intermittent
-
sound
- -
- -
Intermittent
-
sound
Intermittent
-
sound
Intermittent
-
sound
Intermittent
-
sound
Intermittent
-
sound
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Intermittent
ENGINEER sound
CALL SERVICE Intermittent
ENGINEER sound
CALL SERVICE Intermittent
ENGINEER sound
CALL SERVICE Intermittent
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
External relay Failure
contact lamp
(Note 1) (Note 2)
- -
- -
- -
- -
- -
- -
- -
End-of-
Cont. On
Discharge
- -
- -
- -
- -
- -
- -
Major Cont. On
Major Cont. On
Major Cont. On
Major Cont. On
Major Cont. On
Minor Blinking
Minor Blinking
Minor Blinking
Minor Blinking
Major Cont. On
Major Cont. On
Major Cont. On
Major Cont. On
Major Cont. On
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