YASKAWA L1000A Technical Manual page 258

6.3 Fault Detection
Digital Operator Display
Cause
There is a connection error.
Drive fails to operate properly due to noise interference.
Digital Operator Display
Cause
There is an error in EEPROM control circuit.
The power supply was switched off while parameters
were being saved to the drive.
Power to the control board was lost while writing
parameter settings during Rescue Operation.
Digital Operator Display
Cause
There is a faulty connection between the terminal board
and control board.
Digital Operator Display
CPF20 or CPF21
or
<1>
Cause
Hardware is damaged.
Digital Operator Display
Cause
Hybrid IC failure on the power board
Digital Operator Display
Cause
Hardware is damaged.
Digital Operator Display
Cause
Hardware is damaged.
Digital Operator Display
CPF26 to CPF34
to
Cause
Hardware is damaged.
258
Control Board Connection Error
CPF03
Connection error between the control board and the drive
• Turn off the power and check the connection between the control board and the drive
• If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for
instructions on replacing the control board.
• Check the various options available to minimize the effects of noise.
• Counteract noise in the control circuit, main circuit, and ground wiring.
• Use only recommended cables or other shielded line. Ground the shield on the controller side or on the drive input power side.
• Ensure that other equipment such as switches or relays do not cause noise and use surge absorbers if required.
• Separate all communication wiring from drive power lines. Install an EMC noise filter to the drive power supply input.
EEPROM Memory Data Error
CPF06
An error in the data saved to EEPROM
• Turn off the power and check the connection between the control board and the drive.
• If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for
instructions on replacing the control board.
Reinitialize the drive (A1-03).
Reinitialize the drive (A1-03).
CPF07
Terminal Board Connection Error
CPF08
• Turn off the power and check the connection between the control board and the drive.
• If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for
instructions on replacing the control board.
Control Circuit Error
• Cycle power to the drive.
• If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for
instructions on replacing the control board.
CPF22
Hybrid IC Failure
• Cycle power to the drive.
• If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for
instructions on replacing the control board.
Control Board Connection Error
CPF23
Connection error between the control board and the drive
• Turn the power off and check the connection between the control board and the drive.
• If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for
instructions on replacing the control board.
Drive Unit Signal Fault
CPF24
The drive capacity cannot be detected correctly (drive capacity is checked when the drive is powered up).
If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for
instructions on replacing the control board.
Control Circuit Error
CPU error
If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for
instructions on replacing the control board.
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Refer to Diagnosing and Resetting Faults on page
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
283.