8. MAINTENANCE
8 - 11
Alarm Status
Segment LED
Display
Alarm Code
ALM8,4,2,1
Abbreviation
Alarm
Name
Alarm
Clear
Contents
1010 FP
Main
power
supply
phase
loss
Possible Phase loss detected in 3-phase main
power supply input
Alarm code 0,1 indicates: when Func2/ bit7,6 =”0,0”, “0”= output open and “1”= output short.
Operating state when alarm occurred
POSSIBLE CAUSES
OPERATING STATE
1 2 3
When control power supply is turned on
○
When main power supply is turned on
○
○
During motor operation
△
Alarm occurred although specified single phase
power input
○
Corrective Measures
CAUSE CORRECTIVE MEASURES
1 Faulty input contact on one of the R, S, T
phases
Check and correct wiring.
2 Faulty amplifier internal circuit Replace servo amplifier
3 Servo amplifier is not specified for single
phase
• Confirm model number and delivery specification of
servo amplifier. Replace with amplifier for single
phase, if necessary.
• Change parameter for single phase Amplifier
(Mode4-page8 PSKD)
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