YASKAWA Lift Inverter L1000V, Technical Manual

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170 YASKAWA EUROPE SIEP YASKAWA AC Drive L1000V Technical Manual
6.3 Fault Detection
6.3 Fault Detection
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Fault Displays, Causes, and Possible Solutions
Faults are detected for drive protection, and cause the drive to stop while triggering the fault output terminal MA-MB-
MC. Remove the cause of the fault and manually clear the fault before attempting to run the drive again.
Table 6.7 Detailed Fault Displays, Causes, and Possible Solutions
Digital Operator Display Fault Name
CF Control Fault
The torque limit was reached continuously for three seconds or longer while ramping to stop in OLV Control.
Cause Possible Solution
Motor parameters are improperly set. Check the motor parameter settings and repeat Auto-Tuning.
Torque limit is too low. Set the torque limit to the most appropriate setting (L7-01 through L7-04).
Load inertia is too big.
• Adjust the deceleration ramp (C1-02, -04, -06, -08).
• Set the speed reference to the minimum value and interrupt the Up/Down command when the drive finishes decelerating.
Digital Operator Display Fault Name
CoF Current Offset Fault
The current detection circuit is damaged, or there was residual induction voltage in the motor (such as during sudden deceleration
or when coasting) when the drive attempted to start the motor.
Cause Possible Solution
While the drive automatically adjusted the current
offset, the calculated value exceeded the allowable
setting range.
• Create a motor restart sequence that allows enough time for residual induction voltage to dissipate
• Lengthen the active deceleration ramp (C1-02, -04, -06, -08)
Digital Operator Display Fault Name
or
CPF00 or CPF01 Control Circuit Error
Cause Possible Solution
There is a self diagnostic error in control circuit.
• Cycle power to the drive.
• Set the frequency to the minimum value and interrupt the Run command when the drive finishes decelerating.
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 the control board or the entire drive. Contact Yaskawa or a Yaskawa representative for
instructions on replacing the control board.
Digital Operator Display Fault Name
CPF03
Control Board Connection Error
Connection error between the control board and the drive
Cause Possible Solution
There is a connection error.
• 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.
Drive fails to operate properly due to noise interference.
• 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.
Digital Operator Display Fault Name
CPF06
EEPROM Memory Data Error
An error in the data saved to EEPROM
Cause Possible Solution
There is an error in EEPROM control circuit.
• 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.
The power supply was switched off while parameters
were being saved to the drive.
Reinitialize the drive (A1-03).
Power to the control board was lost while writing
parameter settings during Rescue Operation.
Reinitialize the drive (A1-03).
Digital Operator Display Fault Name
CPF07
Terminal Board Connection Error
CPF08
Cause Possible Solution
There is a faulty connection between the terminal board
and control board.
• 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.