Fault - YASKAWA T103 Installation & Primary Operation

– 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
CF Control Fault
CoF Current Offset Fault
YASKAWA TOEPC71061782C GA800 Drive Installation & Primary Operation
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.
Electrical interference caused a communication data
error.
Motor parameters are set incorrectly
The drive starts operation while the induced voltage
stays in the motor (during coasting to a stop or after
fast deceleration).
(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.
• Examine the control circuit lines, main circuit lines, and ground
wiring, and decrease the effects of electrical interference.
• Make sure that a magnetic contactor is not the source of the
electrical interference, then use a Surge Protective Device if
necessary.
• Use only the recommended cables or other shielded line. Ground
the shield on the controller side or the drive input power side.
• Separate the communication wiring from drive power lines, and
install a noise filter to the input side of the power supply for
communication.
• Decrease the effects of electrical interference from the controller.
Correctly set the motor parameters and do Auto-Tuning again.
• Make a sequence that does not restart operation when induced
voltage stays in the motor.
• Set b3-01 = 1 [Speed Search at Start Selection = Enabled].
• Use Speed Search from Fmax or Fref [H1-xx = 61, 62] to do a
speed search through one of the external terminals.
Note:
When controlling the PM motor, External Speed Search
commands 1 and 2 operate the same.
20 Troubleshooting
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