9 Troubleshooting
9-24
A.81
OFF
OFF
OFF
OFF
Encoder Backup Error
∗
2
All the power supplies for the absolute encoder
have failed and position data was cleared.
A.82
Encoder Checksum Error
∗
2
The checksum results of encoder memory is
incorrect.
A.83
Encoder Battery Error
Backup battery voltage for the absolute encoder
has dropped.
A.84
Encoder Data Error
∗
2
Data in the encoder is incorrect.
A.85
Encoder Overspeed
The encoder was rotating at high speed when
the power was turned ON.
A.86
Encoder Overheated
The internal temperature of encoder is too high.
A.b1
Reference Speed Input Read
Error
The A/D converter for reference speed input is
faulty.
A.b2
Reference Torque Input
Read Error
The A/D converter for reference torque input is
faulty.
A.b6
Gate array error
Communications LSI error
A.bF
System Alarm
∗
2
A system error occurred in the SERVOPACK.
A.C1
ON
OFF
ON
OFF
Servo Overrun Detected
The servomotor ran out of control.
A.C6
Fully Closed Encoder Phase
A/B Disconnection Alarm
The phase A/B of the fully closed encoder was
disconnected.
A.C7
Fully Closed phase C Dis-
connection Alarm
The phase C of the fully closed encoder was
disconnected.
A.C8
Encoder Clear Error and
Multiturn Limit Setting
Error
∗
2
The multiturn for the absolute encoder was not
properly cleared or set.
A.C9
Encoder Communications
Error
∗
2
Communications between SERVOPACK and
encoder is not possible.
A.CA
Encoder Parameter Error
∗
2
Encoder parameters are faulty.
A.Cb
Encoder Echoback Error
∗
2
Contents of communications with encoder is
incorrect.
A.CC
Multiturn Limit Disagree-
ment Alarm
Different multiturn limits have been set in the
encoder and SERVOPACK.
A.d0
ON
ON
OFF
OFF
Position Error Pulse Over-
flow
Position error pulse exceeded parameter
(Pn505).
Table 9.2 Alarm Displays and Outputs (cont’d)
Alarm
Display
Alarm Code Outputs
ALM
Output
Alarm Name
Description
ALO1
ALO2
ALO3
