Omron OMNUC W R88A-NCW152-DRT, Manual

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