YASKAWA Sigma-V Series User Manual page 264

Alarm Number:
Alarm Name
(Alarm Description)
The ambient operating tempera-
ture around the servomotor is too
high.
The motor load is greater than the
rated load.
A.860:
Encoder Overheated
(Only when an absolute
An encoder fault occurred.
encoder is connected.)
(Detected on the encoder
side.)
A fault occurred in the multi-
winding drive unit.
A.b31:
The current detection circuit for
Current Detection
phase U is faulty.
Error 1
A.b32:
The current detection circuit for
Current Detection
phase V is faulty.
Error 2
The detection circuit for the cur-
A.b33:
rent is faulty.
Current Detection
Error 3
The servomotor main circuit
cable is disconnected.
A.b6A:
The multi-winding drive unit or
MECHATROLINK SERVOPACK MECHA-
Communications ASIC TROLINK communications sec-
Error 1 tion has failed.
MECHATROLINK data recep-
tion error occurred due to noise
interference.
A.b6b:
MECHATROLINK
Communications ASIC
Error 2
The multi-winding drive unit or
SERVOPACK MECHA-
TROLINK communications sec-
tion has failed.
A.bF0:
A fault occurred in the multi-
winding drive unit.
System Alarm 0
A.bF1:
A fault occurred in the multi-
winding drive unit.
System Alarm 1
Cause Investigative Actions
Measure the ambient operating tem-
perature around the servomotor.
Check the accumulated load ratio
(Un009) to see the load.
−
−
−
−
−
Check for disconnection of the ser-
vomotor main circuit cable.
−
−
−
−
−
8.1 Alarm Displays
(cont'd)
Corrective Actions
The ambient operating temperature
must be 40°C or less.
The motor load must be within the
specified range.
Turn the control power supply OFF
and ON again. If the alarm still
occurs, the servomotor may be
faulty. Replace the servomotor.
Turn the control power supply OFF
and ON again. If the alarm still
occurs, the multi-winding drive unit
may be faulty. Replace the multi-
winding drive unit.
Turn the control power supply OFF
and ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Turn the control power supply OFF
and ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Turn the control power supply OFF
and ON again. If the alarm still
occurs, the SERVOPACK may be
faulty. Replace the SERVOPACK.
Correct the servomotor wiring.
Turn the control power supply OFF
and ON again. If the alarm still
occurs, the multi-winding drive unit
or SERVOPACK may be faulty.
Replace the multi-winding drive
unit or SERVOPACK.
Take measures against noise. Check
the MECHATROLINK communi-
cations cable and FG wiring and
take measures such as adding ferrite
core on the MECHATROLINK
communications cable.
Turn the control power supply OFF
and ON again. If the alarm still
occurs, the multi-winding drive unit
or SERVOPACK may be faulty.
Replace the multi-winding drive
unit or SERVOPACK.
Turn the control power supply OFF
and ON again. If the alarm still
occurs, the multi-winding drive unit
may be faulty. Replace the multi-
winding drive unit.
Turn the control power supply OFF
and ON again. If the alarm still
occurs, the multi-winding drive unit
may be faulty. Replace the multi-
winding drive unit.
8
8-15