Alarm Display Table - Omron OMNUC W Series Manual

9 Troubleshooting

9.1 Alarm Display Table

Alarm Alarm Code Outputs
Display
ALO1
A.02 OFF
A.03
A.04
A.05
A.10 ON
A.30 ON
A.32
A.33 ON
A.40 OFF
A.41
A.51 ON
A.71 ON
A.72
A.73
9
A.74
A.7A
The alarm display and the relationship between ON/OFF alarm code outputs are shown in
Table 9.1.
Table 9.1 Alarm Display Table
Servo
Alarm
ALO2 ALO3
Output
OFF OFF OFF
OFF OFF OFF
ON OFF OFF
ON OFF OFF
OFF ON OFF
OFF ON OFF
ON ON OFF
Alarm Name
*2
Parameter Corruption
Main-circuit Detection Error
*2
Parameter Setting Error
Servomotor Mismatch
*2
Overcurrent
Regeneration Error
Regeneration Overload
Main-circuit Power Supply
Setting Error
*3
Overvoltage
*3
Low Voltage
Overspeed
Overload
Overload
Dynamic Brake Overload
Inrush Resistance Overload
*1
Overheat
9-2
Description
EEPROM data of Servo Driver is abnormal.
Detection data for power circuit is abnor-
mal.
The parameter setting is out of the allowable
setting range.
Servo Driver and Servomotor capacities do
not match each other.
An overcurrent flowed through the IGBT.
Heat sink of Servo Driver was overheated.
• Regenerative resistor is disconnected.
• Regenerative transistor is defective.
Regenerative energy exceeds regenerative
resistor capacity.
The AC/DC wiring method of the main cir-
cuit power supply is different from the set-
ting of the parameter Pn001.2 (Power
Supply AC/DC Input Selection).
Main circuit DC voltage is excessively high.
Main circuit DC voltage is low.
Rotational speed of the motor is excessively
high.
The motor was operating for several seconds
to several tens of seconds under a torque
largely exceeding ratings.
The motor was operating continuously
under a torque largely exceeding rating.
When the dynamic brake was applied, rota-
tional energy exceeded the capacity of
dynamic brake resistor.
The main circuit power was frequently
turned ON and OFF.
The heat sink of Servo Driver is overheated.