8. MAINTENANCE
Alarm Status
Segment LED
Alarm Code
Display
ALM8,4,2,1
Alarm code 0,1 indicates: when Func2/ bit7,6 ="0,0", "0"= output open and "1"= output short.
Operating state when alarm occurred
OPERATING STATE
When control power supply is turned on
When main circuit power supply is turned on
When motor is started or stopped
Corrective Measures
1
Faulty amplifier control board
2
Power voltage of main circuit is exceeding
allowable voltage
3
Load inertia is too high
4
Subject to not connecting regenerative resistor:
• Operational pattern requires regenerative
resistor.
5
Subject to using built-in regenerative resistor:
• Faulty wiring of connector CND, or
• Regenerative circuit is faulty
6
Subject to using external regenerative
resistor:
• Regenerative resistor is not connected
• Regenerative resistor is broken
• Regenerative circuit is faulty
Abbreviation
0101
OV
CAUSES
Alarm
Alarm
Name
Clear
Over
Possible DC voltage of main circuit of amplifier
voltage
exceeded allowable voltage
POSSIBLE CAUSES
1
2
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△
Replace servo amplifier.
Reduce voltage to within allowable range.
Reduce load inertia to within allowable range.
• Review operational pattern and load inertia, change
to operational pattern not requiring regenerative
resistor.
• Install external regenerative resistor
• Wiring built-in regenerative resistor correctly:
[15A/30A] Connect built-in regenerative resistor
[50A]
Replace Servo Amplifier if malfunction persists.
Turn power OFF, check wiring and resistance value
of regenerative resistor.
Replace amplifier if malfunction persists.
8 - 6
Contents
3
4
5
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CORRECTIVE MEASURES
wires to P and Y terminals of connector
CND.
Short circuit between P- X terminals of
connector CND.
6
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