9.2 Troubleshooting
9 -35
Alarm
Display
Meaning
Alarm Name
ALM
Output
Alarm Code Outputs
Alarm
Display
Meaning
Alarm Name
ALM
Output
ALO3
ALO2
ALO1
A.81
OFF
OFF
OFF
OFF
Encoder Backup Error
*2
All the power supplies for the absolute en-
coder have failed and position data was
cleared.
A.82
Encoder Checksum Error
*2
The checksum results of encoder memory is
abnormal.
A.83
Absolute Encoder Battery
Error
Battery voltage for the absolute encoder has
dropped.
A.84
Encoder Data Error
*2
Data in the encoder is abnormal.
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 in-
put is faulty.
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.C8
Absolute Encoder Clear Er-
ror and Multi-turn Limit
Setting Error
*2
The multi-turn 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
*3
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 user constant
(Pn505).
A.E7
OFF
ON
ON
OFF
Option Unit Detection Error
Option unit detection fails.
A.F1
OFF
ON
OFF
OFF
Power Line Open Phase
One phase is not connected in the main
power supply
CPF00
Not specified
Digital Operator Transmis-
sion Error
Digital Operator (JUSP-OP02A-2) fails to
communicate with Servopack (e.g., CPU
CPF01
sion Error
communicate with Servopack (e.g., CPU
error).
A.-- --
OFF
OFF
OFF
ON
Not an error
Normal operation status
9
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