Alarm Display Table; Troubleshooting - YASKAWA SGDH User Manual

10 Inspection, Maintenance, and Troubleshooting

10.1.1 Alarm Display Table

10.1 Troubleshooting

10.1.1 Alarm Display Table
The relation between alarm displays and alarm code outputs is shown in Table 10.1.
If an alarm occurs, the servomotor can be stopped by doing either of the following operations.
• DB STOP: Stops the servomotor immediately using the dynamic brake.
• ZERO-SPEED STOP: Stops the servomotor by setting the speed reference to "0."
Alarm
Alarm Name
Display
A.02
Parameter Breakdown
A.03 Main Circuit Encoder Error
(Not detected for the SERVOPACKs
with the capacity of 6.0 kW or more.)
A.04
Parameter Setting Error
A.05 Combination Error
A.10
Overcurrent or Heat Sink Overheated
A.30
Regeneration Error Detected
A.32
Regenerative Overload
A.33 Main Circuit Power
Supply Wiring Error
A.40 Overvoltage *
A.41
Undervoltage *
A.51 Overspeed
A.71
Overload: High Load
A.72 Overload: Low Load
A.73 Dynamic Brake Overload
(Not detected for the SERVOPACKs
with the capacity of 30 W to 1.0 kW.)
A.74
Overload of Surge
Current Limit Resistor
A.7A Heat Sink Overheated
(Not detected for the SERVOPACKs
with the capacity of 30 W to 1.0 kW.)
Table 10.1 Alarm Displays and Outputs
Meaning
EEPROM data of SERVOPACK is
abnormal.
Detection data for power circuit is
abnormal.
The parameter setting is outside the
allowable setting range.
SERVOPACK and servomotor capaci-
ties do not match each other.
An overcurrent flowed through the
IGBT.
Heat sink of SERVOPACK was over-
heated.
Regenerative transistor or regenerative
resistor is faulty.
Regenerative energy exceeds regener-
ative resistor capacity.
The power supply to the main circuit
does not match the parameter Pn001
setting.
Main circuit DC voltage is excessively
high.
Main circuit DC voltage is excessively
low.
The motor speed is excessively high.
The motor was operating for several
seconds to several tens of seconds
under a torque largely exceeding rat-
ings.
The motor was operating continuously
under a torque largely exceeding rat-
ings.
When the dynamic brake was applied,
rotational energy exceeded the capac-
ity of dynamic brake resistor.
The main circuit power was frequently
turned ON and OFF.
The heat sink of SERVOPACK over-
heated.
10-2
Alarm Alarm Code Output
Reset
ALO1 ALO2 ALO3
N/A
Available
H H
N/A
Available
N/A
L H
Available
Available
L L
Available
Available
H H
Available
Available
L H
Available
Available
Available
L L
Available
Available
Servo
Alarm
(ALM)
Output
H H
H H
H H
L H
L H
L H