6.4 Fault Detection
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual 337
Digital Operator Display Fault Name
or
<1>
CPF00 or CPF01
<1>
Control Circuit Error
Cause Possible Solution
There is a self diagnostic error in control circuit.
• 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.
Connector on the operator is damaged. Replace the operator.
Digital Operator Display Fault Name
CPF02
A/D Conversion Error
An
A/D conversion error or control circuit error occurred.
Cause Possible Solution
Control circuit is damaged.
• 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.
Digital Operator Display Fault Name
CPF03
Control Board Connection Error
C
onnection error between the control board and the drive
Cause Possible Solution
There is a connection error.
• Turn the power off and check the connection between the control board and the drive.
• If the problem continues, replace either t
he control board or the entire drive.
Drive fails to operate properly due to electrical signal
i
nterference.
• 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 sh
ielded 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.
Digital Operator Display Fault Name
CPF06
EEPROM Memory Data Error
T
here is an error in the data saved to EEPROM.
Cause Possible Solution
There is an error in EEPROM control circuit.
• 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 ent
ire drive. For instructions on replacing the control board,
contact YASKAWA or your nearest sales representative.
The power supply was switched off when parameters
were being saved to the drive.
Reinitialize the drive (A1-03 = 2220, 3330).
Digital Operator Display Fault Name
CPF07
Terminal Board Connection Error
CPF08
Cause Possible Solution
There is a fault connection be
tween the terminal board
and control board.
• Turn the power off and reconnect
the 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.
Digital Operator Display Fault Name
CPF11 RAM Fault
Cause Possible Solution
Hardware is damaged. Replace the drive.
Digital Operator Display Fault Name
CPF12
FLASH Memory Fault
Problem
with the ROM (FLASH memory).
Cause Possible Solution
Hardware is damaged. Replace the drive.
Digital Operator Display Fault Name
CPF13
Watchdog Circuit Exception
Self-
diagnostics problem.
Cause Possible Solution
Hardware is damaged. Replace the drive.
Digital Operator Display Fault Name
CPF14
Control Circuit Fault
C
PU error (CPU operates incorrectly due to noise, etc.)
Cause Possible Solution
Hardware is damaged. Replace the drive.
Digital Operator Display Fault Name
CPF16
Clock Fault
St
andard clock error.
Cause Possible Solution
Hardware is damaged. Replace the drive.
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