A.B31:
Current Detection
Error 1
(Phase-U)
The current detection circuit for
phase U is faulty.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.B32:
Current Detection
Error 2
(Phase-V)
The current detection circuit for
phase V is faulty.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.B33:
Current Detection
Error 3
(Current detector)
The detection circuit for the cur-
rent is faulty.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
The servomotor main circuit
cable is disconnected.
Check for disconnection of the
motor main circuit cable.
Correct the servomotor wiring.
A.B4A:
Converter Gate Drive
Output Error
The gate drive signal output cir-
cuit of power transistor of the
power regeneration converter has
failed.
−
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
A.BDA:
Converter CPU: AD
Conversion Circuit
Error
(An error occurred in the
A/D conversion circuit
inside the power regen-
eration converter.)
Power regeneration converter
failure
−
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
A.BDC:
Converter Reference
Voltage Error 2
(An error occurred in the
reference voltage output
inside the power
regeneration converter.)
Power regeneration converter
failure
−
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
A.BDD:
Converter System
Error 0
Power regeneration converter
failure
−
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
A.BEA:
Converter System
Error 1
Power regeneration converter
failure
−
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
A.BEB:
Converter System
Error 2
Power regeneration converter
failure
−
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
A.BF0:
System Alarm 0
S
ERVOPACK failure −
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.BF1:
System Alarm 1
SERVOPACK failure −
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.BF2:
System Alarm 2
SERVOPACK failure −
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
A.BF3:
System Alarm 3
SERVOPACK failure −
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
(cont’d)
Alarm:
Alarm Name
Cause Investigative Actions Corrective Actions
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