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10.1 Troubleshooting
10-3
10
* The alarm meaning differs depending on the SERVOPACK capacity.
•
For the SERVOPACK with a capacity of 5.0 kW or lower:
A.40: Overvoltage detection alarm
A.41: Undervoltage detection alarm
• For the SERVOPACK with a capacity of 6.0 kW or higher:
A.40: Alarm detecting excessively high/low voltage in the main circuit
A.41: Not used
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.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.E7 Application Module Detection Error The application module detection
fails. Available
H L L H
A.F1 Power Line Open Phase One phase is not connected in the
main power supply.
Available
H L H H
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