6.4 Fault Detection
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YASKAWA ELECTRIC
SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
LED Operator Display
Fault Name
CPF02
A/D Conversion Error
An A/D conversion error occurred.
Cause
Possible Solution
Control circuit is damaged.
Cycle power to the drive. If the problem continues, replace the drive.
Control circuit terminals have shorted out
(+V, AC).
• Check for wiring errors along the control circuit terminals.
• Correct the wiring.
Check the resistance of the speed potentiometer and related wiring.
Control terminal input current has exceeded
allowable levels.
• Check the input current.
• Reduce the current input to control circuit terminal (+V) to 20 mA.
LED Operator Display
Fault Name
CPF03
PWM Data Error
There is a problem with the PWM data.
Cause
Possible Solution
Drive hardware is damaged.
Replace the drive.
LED Operator Display
Fault Name
CPF06
EEPROM Data Error
There is an error in the data saved to EEPROM.
Cause
Possible Solution
Control circuit is damaged.
• Cycle power to the drive. If the problem continues, replace the drive.
• Reinitialize the drive (A1-03).
• Replace the drive if CPF06 still occurs after reinitializing the drive (A1-03).
The power supply was switched off when
parameters were written (e.g., using a
communications option card).
LED Operator Display
Fault Name
CPF07
Terminal Board Communications Error
A communication error occurred at the terminal board.
Cause
Possible Solution
There is a fault connection between the
terminal board and control board.
Turn the power off and reconnect the control circuit terminals.
LED Operator Display
Fault Name
CPF08
EEPROM Serial Communication Fault
EEPROM communications are not functioning properly.
Cause
Possible Solution
Terminal board or control board is not
connected properly.
Turn the power off and check the control terminal connections.
LED Operator Display
Fault Name
CPF11
RAM Fault
Cause
Possible Solution
Hardware is damaged.
Replace the drive.
LED Operator Display
Fault Name
CPF12
FLASH Memory Fault
Problem with the ROM (FLASH memory).
Cause
Possible Solution
Hardware is damaged.
Replace the drive.
LED Operator Display
Fault Name
CPF13
Watchdog Circuit Exception
Self-diagnostics problem.
Cause
Possible Solution
Hardware is damaged.
Replace the drive.
LED Operator Display
Fault Name
CPF14
Control Circuit Fault
CPU error (CPU operates incorrectly due to noise, etc.)
Cause
Possible Solution
Hardware is damaged.
Replace the drive.