11.2 Alarm Displays
11-7
Inspection, Maintenance, and
Troubleshooting
1
1
A.810
Encoder Backup Error
All the power supplies for the absolute encoder have failed
and position data was cleared.
Gr.1
N/A
A.820
Encoder Checksum Error
The checksum results of encoder memory is incorrect.
Gr.1
N/A
A.830
Absolute Encoder Battery
Error
The battery voltage was lower than the specified value after
the control power supply is turned ON.
Gr.1
Available
A.840
Encoder Data Error
Data in the encoder is incorrect.
Gr.1
N/A
A.850
Encoder Overspeed
The encoder was rotating at high speed when the power was
turned ON.
Gr.1
N/A
A.860
Encoder Overheated
The internal temperature of encoder is too high.
Gr.1
N/A
A.8A0
*2
External Encoder Error of
Scale
The external encoder is faulty.
Gr.1
Available
A.8A1
*2
External Encoder Error of
Module
The serial converter unit is faulty.
Gr.1
Available
A.8A2
*2
External Encoder Error of
Sensor (Incremental)
The external encoder is faulty.
Gr.1
Available
A.8A3
*2
External Encoder Error of
Position (Absolute)
The position of external encoder is faulty.
Gr.1
Available
A.8A5
*2
External Encoder Overspeed
The overspeed from the external encoder occurred.
Gr.1
Available
A.8A6
*2
External Encoder Overheated
The overheat from the external encoder occurred.
Gr.1
Available
A.B31
Current Detection Error1
(Phase-U)
The current detection circuit for phase-U is faulty.
Gr.1
N/A
A.B32
Current Detection Error 2
(Phase-V)
The current detection circuit for phase-V is faulty.
Gr.1
N/A
A.B33
Current Detection Error 3
(Current detector)
The detection circuit for the current is faulty.
Gr.1
N/A
A.B4A
Converter Gate Drive Output
Error
An error occurred in the gate drive signal of power transistor
of the power regeneration converter.
Gr.1
N/A
A.BDA
Converter CPU: AD
Conversion Circuit Error
An error occurred in the A/D conversion circuit inside the
power regeneration converter.
Gr.1
Available
A.BDC
Converter Reference Voltage
Error 2
An error occurred in the reference voltage output inside the
power regeneration converter.
Gr.1
Available
A.BDD
Converter System Error 0
Internal program error 0 occurred inside the power regenera-
tion converter.
Gr.1
N/A
A.BEA
Converter System Error 1
Internal program error 1 occurred inside the power regenera-
tion converter.
Gr.1
N/A
A.BEB
Converter System Error 2
Internal program error 2 occurred inside the power regenera-
tion converter.
Gr.1
N/A
A.BF0
System Alarm 0
Internal program error 0 occurred in the SERVOPACK.
Gr.1
N/A
A.BF1
System Alarm 1
Internal program error 1 occurred in the SERVOPACK.
Gr.1
N/A
A.BF2
System Alarm 2
Internal program error 2 occurred in the SERVOPACK.
Gr.1
N/A
A.BF3
System Alarm 3
Internal program error 3 occurred in the SERVOPACK.
Gr.1
N/A
A.BF4
System Alarm 4
Internal program error 4 occurred in the SERVOPACK.
Gr.1
N/A
A.C10
Servo Overrun Detected
The servomotor ran out of control.
Gr.1
Available
A.C2A
Pulse Encoder Phase C Error/
Pulse Error
The number of pulses per revolution exceeded the setting
range.
Gr.1
N/A
A.C3A
Pulse Encoder Phase A
Disconnection
The signal line for phase A of the pulse encoder is discon-
nected.
Gr.1
N/A
A.C3B
Pulse Encoder Phase B
Disconnection
The signal line for phase B of the pulse encoder is discon-
nected.
Gr.1
N/A
A.C3C
Pulse Encoder Phase C
Disconnection
The signal line for phase C of the pulse encoder is discon-
nected.
Gr.1
N/A
∗
2.
The alarm that may occur when using external encoders.
(cont’d)
Alarm
Display
Alarm Name
Meaning
Motor Stop
Method
Alarm
Reset
