MITSUBISHI ELECTRIC 9900CX SERIES UPS
9900CX SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
6-5
Table 6.1
Bypass Module Fault Code List
Code
indication
(Note 2)
Status
Message
Meaning
Guidance
Audible
Alarm
External
relay
contact
(Note 1)
UF376 CTRL.CIRCUIT
ERR.
No control response from another
UPS although its detection is
possible.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF377 CTRL.CIRCUIT
ERR.
Logic signal abnormal (Supply
OFF).
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF378 CTRL.CIRCUIT
ERR.
No answer for sending
synchronizing signal.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF381 CTRL.CIRCUIT
ERR.
No module supply answer during
UPS operation.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF382 CTRL.CIRCUIT
ERR.
Module supply answer during
UPS halt.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF383 CTRL.CIRCUIT
ERR.
Module overcurrent answer
continued for 10 seconds or
more.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF384 CTRL.CIRCUIT
ERR.
Minor communication error by
fall-out of only A-side of dual
connector.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF385 CTRL.CIRCUIT
ERR.
Minor communication error by
fall-out of only B-side of dual
connector.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF401
52S ABNORMAL
Error to close the contactor 52S.
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF402
52S ABNORMAL
Error to open the contactor 52S.
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF420
52L OPERATION
ERR.
Load circuit breaker 52L opened
during inverter operation.
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF451 52S
ABNORMAL
Contactor 52S failed during load
transfer from inverter to bypass.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF452 CB3
ABNORMAL
Contactor CB3 is not working
properly.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
Содержание 9900C Series
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