Yaskawa Sigma-5 Large Capacity Users Manual: Design and Maintenance-Rotary Motors-Analog Voltage and Pulse Train Reference User Manual
Page 359
10.1 Alarm Displays
10-3
10
Trou
blesh
ooting
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.1
Available
H
H
H
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