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MITSUBISHI
ELECTRIC
9800A SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
6
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5
MITSUBISHI ELECTRIC 9800A SERIES UPS
UA817
EMERGENCY STOP
ACTIVATED
Emergency stop applied - - Alarm -
UA819
REMOTE START
BUTTON ABNORMAL
There is an error with the remote
start switch.
CALL SERVICE
ENGINEER
[1] Alarm -
UA820
REMOTE STOP BUTTON
ABNORMAL
There is an error with the remote
stop switch.
CALL SERVICE
ENGINEER
[1] Alarm -
UA824 CB2 OPEN
Battery disconnect circuit breaker
CB2 turned OFF
TURN ON CB2 [1] Alarm -
UA831
EMERGENCY BYPASS
SWITCH ON
Emergency bypass switch turned
to <Emergency>
- [1] Alarm -
UA834
BATTERY DEPLETED
INV. STOPPED
DC voltage dropped below
discharge end during inverter
operation
- - Alarm -
UA841
CONVERTER OPE.
PROHIBITION
Converter operation interlock
applied
- - Alarm -
UA842
OUTPUT CIRCUIT
ABNORMAL
Load bus voltage sensor
abnormality
- - Alarm -
#1: It has the possibility that output short-circuits.
#2:Check the CB3 and Bypass Thyristors.