Yaskawa MP920 Motion Module User Manual
Page 366
8 Troubleshooting
8.2.1 Alarm IL22
8-10
Note: Yes: Supported, No: Not supported
A.A1
Heat Sink Overheat
SERVOPACK heat sink overheated.
No
Yes
No
A.b1
Speed Reference A/D
Error (Reference
Mechanism Read Error)
A/D converter for the speed reference input failed.
Yes
Yes
Yes
A.b2
Torque Reference A/D
Error
A/D converter for the torque reference input failed.
No
No
Yes
A.bF
System Alarm
SERVOPACK system alarm occurred.
No
No
Yes
A.c1
Servo Crash Detection
Servomotor runaway.
Yes
Yes
Yes
A.c2
Encoder Phase Error
Detection
Improper encoder A, B or C phase output.
Yes
Yes
No
A.c3
Encoder Phase-A/B
Disconnection
Encoder A and B phases are disconnected.
Yes
Yes
No
A.c4
Encoder Phase-C
Disconnection
Encoder C phase is disconnected.
Yes
Yes
No
A.c8
Encoder Clear Error or
Multi-turn Limit Setting
Error
Absolute encoder rotation count cleared incorrectly
or could not be set properly.
No
No
Yes
A.c9
Encoder Communications
Error
Communications between the encoder and SERVO-
PACK failed.
No
No
Yes
A.cA
Encoder Parameter Error
Encoder parameters have been destroyed.
No
No
Yes
A.cb
Encoder Echo Back Error
Improper content in encoder communications.
No
No
Yes
A.do
Position Error Exceeded
Position error pulse exceeded the parameter (Pn505)
setting.
No
No
Yes
F1
Missing Power Line Phase One of main power supply phases is disconnected.
No
Yes
Yes
F3
Instantaneous Power
Interruption Error
Power interruption exceeded one cycle with the
power supply synchronized to the AC power supply.
Yes
Yes
No
A99
No error
Normal run status.
Yes
Yes
No
A--
No error
Normal run status.
No
No
Yes
Table 8.1 List of Analog Servo Alarms (cont’d)
Indicator
Alarm Name
Alarm
SGDA
SGDB
SGDM