Troubleshooting; Fault - YASKAWA GA800 600 V Drive Installation & Primary Operation

18 Troubleshooting

The drive has Maintenance Monitors that keep track of component wear and warn maintenance period when the
estimated performance life is approaching. This Maintenance Monitor eliminates the need to shut down the entire
system for unexpected problems.
Users can set alarm notifications to inform the maintenance periods for a specific drive component.
18 Troubleshooting
Refer to the Technical Reference Manual (SIEPC7106170V) for more information.
If the drive or motor do not operate correctly, look at the drive keypad for fault and alarm information.
• For drive faults:
– The keypad shows the fault code.
– and ALM/ERR on the LED Status Ring illuminate continuously.
– The drive shuts off output and the fault relay output activates. The motor coasts to stop.
• For drive alarms:
– The keypad shows the alarm code.
– and ALM/ERR on the LED Status Ring flash.
– Usually, the drive will continue to operate the motor. Some alarms let you select a motor stopping method.
◆
Fault Reset
1. Remove the cause of the fault or alarm.
2. While the keypad is showing the fault or alarm code, push
◆

Fault

This section gives information about some of the causes and possible solutions of faults. You must use the Fault Reset
operation to remove the fault before you can operate the drive. Use the information in this table to remove the cause
of the fault.
Code Name
bAT Keypad Battery Low Voltage
bCE Bluetooth Communication Fault
boL BrakingTransistor Overload Fault
bUS Option Communication Error
CE Modbus Communication Error
66
Causes
The keypad battery voltage is low.
The smartphone or tablet with DriveWizard Mobile
installed is too far from the keypad.
Radio waves from a different device are causing
interference with communications between the
smartphone or tablet and keypad.
The duty cycle of the braking transistor is high (the
regeneration power or repetition frequency is high).
The drive did not receive a signal from the controller.
The communications cable wiring is incorrect.
There is a short circuit in the communications cable
or the communications cable is not connected.
YASKAWA TOEPC7106170VA GA800 600 V Drive Installation & Primary Operation
(RESET) or on the keypad.
Possible Solutions
Replace the keypad battery.
Use the smartphone or tablet 10 m (32.8 ft) or nearer to the keypad.
Note:
bCE can occur when the smartphone or tablet is 10 m (32.8 ft)
or nearer to the keypad depending on the specifications of the
smartphone or tablet.
Make sure that no device around the keypad uses the same radio
bandwidth (2400 MHz to 2480 MHz), and prevent radio
interference.
• Install a braking unit (CDBR-series).
• Install a regenerative converter.
• Increase the deceleration time.
Correct wiring errors.
Correct wiring errors.
• Repair short circuits and connect cables.
• Replace the defective communications cable.