8. MAINTENANCE
8 - 10
Alarm Status
Segment LED
Display
Alarm Code
ALM8,4,2,1
Abbreviation
Alarm
Name
Alarm
Clear
Contents
1001 MPE
Main
power
supply
drop
Possible Main circuit power supply voltage drop
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 4 5
When control power supply is turned on
○ △
After main circuit power supply is turned on
○ ○
During motor operation (alarm can be reset)
△ ○
During motor operation (alarm can not be reset)
○
Corrective Measures
CAUSE CORRECTIVE MEASURES
1 Power supply voltage is below specified range Set power supply to within specified range.
2 Main circuit rectifier is broken Replace servo amplifier.
3 Input voltage dropped. Or momentary
interruption occurred.
Check main power supply not to occur momentary
interruption or power drop.
4 Low voltage of out of specification is supplying
to main circuit (R.S.T)
Check main circuit voltage not to supply around
power from other to R. S. T when main circuit OFF.
5 Faulty internal circuit of servo amplifier Replace servo amplifier
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