10.1 Alarm Displays
10-3
A.300 Regeneration Error
Regenerative circuit or regenerative resis-
tor is faulty.
Gr.1 Available L L H
A.320 Regenerative Overload
Regenerative energy exceeds regenerative
resistor capacity.
Gr.2 Available L L H
A.330
Main Circuit Power
Supply Wiring Error
• Setting of AC input/DC input is incor-
rect.
• Power supply wiring is incorrect.
Gr.1 Available L L H
A.400 Overvoltage
Main circuit DC voltage is excessively
high.
Gr.1 Available H H L
A.410 Undervoltage
Main circuit DC voltage is excessively
low.
Gr.2 Available H H L
A.42A Converter error
One of the following was detected by the
converter.
• An operation error occurred when using
the limit relay for inrush current
• PN voltage error
• Regeneration operation error
• The converter’s heat sink overheated
• An operation error occurred when using
the converter and fan
Gr.1 Available H H L
A.450
Main-Circuit
Capacitor Overvoltage
The capacitor of the main circuit has dete-
riorated or is faulty.
Gr.1 N/A H H L
A.510 Overspeed
The servomotor speed is above the maxi-
mum rotational speed.
Gr.1 Available L H L
A.511
Overspeed of Encoder
Output Pulse Rate
The pulse output speed upper limit of the
set encoder output pulse (Pn212) is
exceeded.
Gr.1 Available L H L
A.520 Vibration Alarm
Incorrect vibration at the motor speed was
detected.
Gr.1 Available L H L
A.521 Autotuning Alarm
Vibration was detected while performing
tuning-less function.
Gr.1 Available L H L
A.710 Overload: High Load
The servomotor was operating for several
seconds to several tens of seconds under a
torque largely exceeding ratings.
Gr.2 Available L L L
A.720 Overload: Low Load
The servomotor was operating continu-
ously under a torque exceeding ratings.
Gr.1 Available L L L
A.730
A.731
Dynamic Brake Overload
When the dynamic brake was applied,
rotational energy exceeded the capacity of
dynamic brake resistor.
Gr.1 Available L L L
A.740
Overload of Surge
Current Limit Resistor
The main circuit power was frequently
turned ON and OFF.
Gr.1 Available L L L
A.7A0 Heat Sink Overheated
The heat sink of the SERVOPACK or con-
verter exceeded 100°C.
Gr.2 Available L L L
A.7AB
Built-in Fan in
SERVOPACK Stopped
The fan inside the SERVOPACK stopped. Gr.1 Available L L L
A.810 Encoder Backup Error
The power supplies to the encoder all
failed and position data was lost.
Gr.1 N/A H H H
A.820 Encoder Checksum Error
The checksum results of encoder memory
is incorrect.
Gr.1 N/A H H H
A.830
Absolute Encoder Battery
Error
The battery voltage was lower than the
specified value after the control power
supply was turned ON.
Gr.1AvailableHHH
A.840 Encoder Data Error Data in the encoder is incorrect. Gr.1 N/A H H H
A.850 Encoder Overspeed
The encoder was rotating at high speed
when the power was turned ON.
Gr.1 N/A H H H
(cont’d)
Alarm
Number
Alarm Name Meaning
Servomotor
Stopping
Method
Alarm
Reset
Alarm Code Output
ALO1 ALO2 ALO3
To Next Page
Loading...
Need help?
General
