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MITSUBISHI
ELECTRIC
9800A SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
6-4
MITSUBISHI ELECTRIC 9800A SERIES UPS
UF305
UPS CONTROL CIRCUIT
ERROR
Control clock abnormality
CALL SERVICE
ENGINEER
[2] Major Lit on
UF306
UPS CONTROL CIRCUIT
ERROR
Control power source circuit
abnormality
CALL SERVICE
ENGINEER
[2] Major Lit on
UF309
INVERTER VOLTAGE
ABNORMAL
Inverter output voltage abnormality
before inverter power supply
CALL SERVICE
ENGINEER
[2] Major Lit on
UF352
CONTROL POWER
SUPPLY ABNORMAL
Control circuit abnormality
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF402 52S ABNORMAL
52S not turned OFF, or 52S turned
OFF without any command
CALL SERVICE
ENGINEER
[2] Major Lit on
UF403 CB3 ABNORMAL
CB3 not turned OFF
(#2)
CALL SERVICE
ENGINEER
[2] Major Lit on
UF451 52S ABNORMAL
52S not turned ON, or 52S turned
ON without any command when
manual transfer
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF452 CB3 ABNORMAL CB3 open
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF453 52L OPERATION ERR. 52L operated abnormality CHECK 52L [2] Major Lit on
UA801
A
C INPUT VOLTAGE OUT
OF RANGE
AC input voltage fell out of +/- 15%
range
CHECK INPUT
POWER
SOURCE
[1] Alarm -
UA806
INVERTER OVERLOAD
> 100%
Overload exceeded 105% (Note 7)
WARNING :
DECREASE
LOAD
[1] Alarm -
UA808
INVERTER OVERLOAD
> 125%
Overload exceeded 125% (Note 7)
WARNING :
DECREASE
LOAD
[1] Alarm -
UA809
INVERTER OVERLOAD
> 150%
Overload exceeded 150% (Note 7)
WARNING :
DECREASE
LOAD
[1] Alarm -
UA810 INVERTER OVERLOAD
Momentary over-current during
Inverter power.
WARNING :
DECREASE
LOAD
[1] Alarm -
UA811 OVERLOAD TRANS. Overload transfer - [1] Alarm
UA812
BYPASS VOLTAGE OUT
OF RANGE
Bypass voltage fell out of +/- 20%
range
CHECK
BYPASS INPUT
[1] Alarm -
UA813
BYPASS PHASE
ROTATION ERROR
Phase rotation is inverted when
bypass voltage is normal
CHECK
BYPASS INPUT
[1] Alarm -
UA814
BYPASS FREQUENCY
OUT OF RANGE
Bypass frequency fell out of
inverter synchronization follow-up
range
CHECK
BYPASS INPUT
[1] Alarm -