10.1 Troubleshooting
10-3
10
Inspection, Maintenance, and
T
roubleshooting
* For the SERVOPACK with a capacity of 22 kW or more, alarm A.40 indicates detecting excessively
high/low voltage in the main circuit.
A.81
Encoder Backup Error
All the power supplies for the absolute
encoder have failed and position data
was cleared.
N/A
H
H
H
H
A.82
Encoder Checksum Error
The checksum results of encoder
memory is abnormal.
N/A
A.83
Absolute Encoder Battery Error
Backup battery voltage for the abso-
lute encoder has dropped.
Available
A.84
Encoder Data Error
Data in the encoder is abnormal.
N/A
A.85
Encoder Overspeed
The encoder was rotating at high
speed when the power was turned ON.
N/A
A.86
Encoder Overheated
The internal temperature of encoder is
too high.
N/A
A.b1
Reference Speed Input Read Error
The A/D converter for reference speed
input is faulty.
Available
A.b2
Reference Torque Input Read
Error
The A/D converter for reference
torque input is faulty.
Available
A.b3
Current Detection Error
The current sensor is faulty, or the ser-
vomotor is disconnected.
Available
A.bF
System Alarm
A system error occurred in the SER-
VOPACK.
N/A
A.C1
Servo Overrun Detected
The servomotor ran out of control.
Available
L
H
L
H
A.C8
Absolute Encoder Clear Error and
Multiturn Limit Setting Error
The multiturn for the absolute encoder
was not properly cleared or set.
N/A
A.C9
Encoder Communications Error
Communications between SERVO-
PACK and encoder is not possible.
N/A
A.CA
Encoder Parameter Error
Encoder parameters are faulty.
N/A
A.Cb
Encoder Echoback Error
Contents of communications with
encoder is incorrect.
N/A
A.CC
Multiturn Limit Disagreement
Different multiturn limits have been
set in the encoder and SERVOPACK.
N/A
A.d0
Position Error Pulse Overflow
Position error pulse exceeded parame-
ter (Pn505).
Available
L
L
H
H
A.F1
Power Line Open Phase
One phase is not connected in the
main power supply.
Available
H
L
H
H
A.F4
Main circuit MC Error
The magnetic contactor of main circuit
is faulty.
Available
A.F5
Servomotor Disconnection Alarm
The servomotor will not operate, or
the power is not being supplied to the
servomotor, though the Servo ON
command was input and the command
to the SERVOPACK was valid.
Available
A.F6
CPF00
Digital Operator
Transmission Error
Digital operator (JUSP-OP02A-2)
fails to communicate with SERVO-
PACK (e.g., CPU error).
N/A
Not decided
CPF01
N/A
A.
− −
Not an error
Normal operation status
-
H
H
H
L
Table 10.1 Alarm Displays and Outputs (cont’d)
Alarm
Display
Alarm Name
Meaning
Alarm
Reset
Alarm Code Output
Servo
Alarm
(ALM)
Output
ALO1
ALO2
ALO3
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