YASKAWA E-V Series User Manual page 218

8 Troubleshooting
8.1.2 Troubleshooting of Alarms
Alarm:
Alarm Name
A.860:
Encoder Overheated
(Only when an absolute
encoder is connected.)
(Detected on the encoder
side.)
A.890:
Encoder Scale Error
A.891:
Encoder Module Error
A.b31:
Current Detection
Error 1
(Phase-U)
A.b32:
Current Detection
Error 2
(Phase-V)
A.b33:
Current Detection
Error 3
(Current detector)
A.b6A:
MECHATROLINK
Communications ASIC
Error 1
A.bF0:
System Alarm 0
A.bF1:
System Alarm 1
A.bF2:
System Alarm 2
8-14
Cause
The surrounding air temperature
around the servomotor is too
high.
The servomotor load is greater
than the rated load.
An encoder fault occurred.
A SERVOPACK fault occurred.
A linear scale fault occurred.
An encoder fault occurred.
The current detection circuit for
phase U is faulty.
The current detection circuit for
phase V is faulty.
The detection circuit for the cur-
rent is faulty.
The servomotor main circuit
cable is disconnected.
SERVOPACK MECHA-
TROLINK communication sec-
tion fault.
A SERVOPACK fault occurred.
A SERVOPACK fault occurred.
A SERVOPACK fault occurred.
Investigative Actions
Measure the surrounding air tem-
perature around the servomotor.
Check the accumulated load ratio
monitor (Un009) to see the load.
−
−
−
−
−
−
−
Check for disconnection of the
motor main circuit cable.
−
−
−
−
Corrective Actions
The surrounding air temperature
must be 40°C or less.
The servomotor load must be within
the specified range.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the servomotor may be
faulty. Repair or replace the servo-
motor.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.
The linear scale may be faulty.
Repair or replace the linear scale.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the servomotor may be
faulty. Repair or replace the servo-
motor.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.
Correct the servomotor wiring.
Replace the SERVOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Repair or replace the SER-
VOPACK.