YASKAWA T1000A Technical Manual page 278

6.4 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 when parameters
were being saved to the drive.
Digital Operator Display
Cause
There is a fault connection between the terminal board
and control board.
Digital Operator Display
or
CPF20 and CPF21
<1>
Cause
Hardware is damaged.
Digital Operator Display
Cause
An A/D conversion error occurred in the power board
circuit.
Digital Operator Display
Cause
Hardware is damaged.
Digital Operator Display
Cause
Hardware is damaged.
Digital Operator Display
Cause
Terminal board is not connected properly.
Digital Operator Display
CPF26 to CPF35
to
Cause
Hardware is damaged.
278
Control Board Connection Error
CPF03
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 either the control board or the entire drive.
• Check the various options available to minimize the effects of noise.
• Take steps to 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 suppressors 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
There is an error in the data saved to EEPROM.
• Turn the power off and check the connection between the control board and the drive.
• If the problem continues, replace either the control board or the entire drive. For instructions on replacing the control board,
contact Yaskawa or your nearest sales representative.
Reinitialize the drive (A1-03 = 2220 or 3330).
CPF07
Terminal Board Connection Error
CPF08
• Turn the power off and reconnect the control circuit terminal board.
• If the problem continues, replace either the control board or the entire drive. For instructions on replacing the control board,
contact Yaskawa or your nearest sales representative.
Control Circuit Error
• Cycle power to the drive.
• If the problem continues, replace either the control board or the entire drive. For instructions on replacing the control board,
contact Yaskawa or your nearest sales representative.
CPF22
Powerboard Failure
• Cycle power to the drive.
• If the problem continues, replace either the control board or the entire drive. For instructions on replacing the control board,
contact Yaskawa or your nearest sales representative.
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 either the control board or the entire drive. For instructions on replacing the control board,
contact Yaskawa or your nearest sales representative.
Drive Unit Signal Fault
CPF24
The drive capacity cannot be detected correctly (drive capacity is checked when the drive is powered up).
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your
nearest sales representative.
Terminal Board Not Connected
CPF25
Terminal board is not connected properly.
Make sure the terminal board is properly connected to the drive, then switch the power on.
Control Circuit Error
CPU error
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your
nearest sales representative.
Fault Name
Possible Solution
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Possible Solution
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Refer to Diagnosing and Resetting Faults on page
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
303.