Yaskawa MP920 Motion Module - Manual (Page 366)

8 Troubleshooting
8.2.1 Alarm IL††22
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