YASKAWA UAK series User Manual page 260

11 Inspection, Maintenance, and Troubleshooting
11.2.1 List of Servo Drive Alarms
Alarm
Display
A.41A Converter DC Undervoltage
A.41B Converter AC Undervoltage
Power Failure While Motor
A.41C
Running
Converter Initial Charging
A.42C
Error
Main Circuit Capacitor
A.450
Overvoltage
A.510 Overspeed
A.521 Autotuning Alarm
A.531 Excessive Speed Deviation
Overspeed
A.540
(During Low-speed Winding)
Winding Selection Operation
A.690
Fault
A.6B0 Emergency Stop Failure
A.710 Overload: High Load
A.720 Overload: Low Load
Converter Electric Operation
A.72A
Overload
Converter Power Supply
A.72B
Regenerative Overload
A.730
Dynamic Brake Overload
A.731
Converter Inrush Resistance
A.74A
Overload
A.790 Motor Overheated
Motor Temperature Detection
A.791
Error
Heat Sink in SERVOPACK
A.7A0
Overheated
Built-in Fan in SERVOPACK
A.7AB
Stopped
Built-in Fan in Converter
A.7AC
Stopped
Converter Heat Sink
A.7BA
Overheated
∗1. If the fan stops, an alarm or a warning will issued in accordance with the setting of SERVOPACK parameter
Pn00D.2.
11-6
Alarm Name
The DC-bus voltage inside the power regeneration converter
is abnormally low.
The AC voltage inside the power regeneration converter is
abnormally low.
The AC power supply was cut off while the motor was run-
ning.
The charging of the main circuit capacitor did not finish
within the specified period of time.
The capacitor of the main circuit has deteriorated or is faulty.
The motor speed is excessively high.
Vibration was detected during autotuning.
The deviation between the speed reference and the actual
motor speed is abnormal.
The low-speed winding maximum rotation speed was
exceeded during low-speed winding.
• During the winding selection operation check that is per-
formed when the power is turned ON, the electromagnetic
contactor for winding selection did not change according
to the internal command.
• Winding selection was not completed within two seconds
of receiving the winding selection command.
• Chattering occurred in the electromagnetic contactor for
winding selection when the winding selection command
was not received.
The motor did not stop within 10 s after the emergency stop
signal input.
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 ratings.
Continuous electrical operation was performed that
exceeded the rated output of the power supply regenerative
converter.
Continuous regenerative operation was performed that
exceeded the ratings of the power regenerative converter.
When the dynamic brake was applied, rotational energy
exceeded the capacity of dynamic brake resistor.
The main circuit power supply turned ON and OFF fre-
quently.
The motor temperature exceeded the upper limit.
The motor thermistor is either disconnected or is damaged.
The temperature of the heat sink in the SERVOPACK
exceeded 100°C, or the thermistor in the SERVOPACK was
disconnected or damaged.
The fan inside the SERVOPACK stopped.
*1
The fan inside the power regeneration converter stopped.
*1
The heat sink inside the power regeneration converter
exceeded 100°C, or the thermistor in the converter was dis-
connected or damaged.
Meaning
(cont'd)
Motor Stop Alarm
Method Reset
Gr.2 Available
Gr.1 Available
Gr.1 Available
Gr.1 Available
Gr.1 N/A
Gr.1 Available
Gr.1 Available
Gr.1 Available
Gr.1 Available
Gr.1 N/A
Gr.1 Available
Gr.2 Available
Gr.1 Available
Gr.2 Available
Gr.1 Available
Gr.1 Available
Gr.1 Available
Gr.1 Available
Gr.1 N/A
Gr.2 Available
Gr.1 Available
Gr.1 Available
Gr.2 Available