YASKAWA CIMR-VU BA0001 Technical Manual page 268

6.4 Fault Detection
Digital Operator Display
Due to residual induction current in the motor
when the drive attempted to start the motor,
the drive attempted to adjust the current offset
value beyond the allowable range.
Digital Operator Display
Cause
Control circuit is damaged.
Control circuit terminals have shorted out (+V,
AC).
Control terminal input current has exceeded
allowable levels.
Digital Operator Display
Cause
Drive hardware is damaged.
Digital Operator Display
Cause
Control circuit is damaged.
The power supply was switched off when
parameters were written (e.g., using a
communications option card).
Digital Operator Display
Cause
There is a fault connection between the
terminal board and control board.
Digital Operator Display
Cause
Terminal board or control board is not
connected properly.
Digital Operator Display
Cause
Hardware is damaged.
Digital Operator Display
Cause
Hardware is damaged.
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• Create a motor restart sequence that allows enough time for the residual induction voltage to dissipate.
• Enable Speed Search at start (b3-01 = 1). Use the multi-function terminals to execute External Speed
Search 1 and 2 (H1-oo = 61 or 62).
Note: When using a PM motor, both External Speed Search 1 and 2 perform the same operation.
A/D Conversion Error
CPF02
An A/D conversion error occurred.
Cycle power to the drive. If the problem continues, replace the drive.
• Check for wiring errors along the control circuit terminals.
• Correct the wiring.
Check the resistance of the speed potentiometer and related wiring.
• Check the input current.
• Reduce the current input to control circuit terminal (+V) to 20 mA.
PWM Data Error
CPF03
There is a problem with the PWM data.
Replace the drive.
EEPROM Data Error
CPF06
There is an error in the data saved to EEPROM.
Cycle power to the drive. If the problem continues, replace the drive.
• Cycle power to the drive and check operation again.
• Initialize the drive using A1-03.
• If the problem persists after initializing the drive, replace the drive.
Terminal Board Communications Error
CPF07
A communication error occurred at the terminal board.
Turn the power off and reconnect the control circuit terminals.
EEPROM Serial Communication Fault
CPF08
EEPROM communications are not functioning properly.
Turn the power off and check the control terminal connections.
CPF11 RAM Fault
Replace the drive.
FLASH Memory Fault
CPF12
Problem with the ROM (FLASH memory).
Replace the drive.
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YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual