Yaskawa Z1000 AC Drive HVAC - Manual (Page 200)

Digital Operator Display Fault Name
CPF22 Hybrid IC Failure
Cause Possible Solution
Hybrid IC failure on the power board
• Cycle power to the drive.
• If the problem continues, replace the power board or the entire drive. Contact Yaskawa or a Yaskawa
representative for instructions on replacing the power board.
Digital Operator Display Fault Name
CPF23
Control Board Connection Error
Connection error between the control board and the drive
Cause Possible Solution
Hardware is damaged
• 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.
Digital Operator Display Fault Name
CPF24
Drive Unit Signal Fault
The drive capacity cannot be detected correctly (drive capacity is checked when the drive is powered up).
Cause Possible Solution
Hardware is damaged
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
CPF25 Terminal Board Not Connected
Cause Possible Solution
Terminal board is not connected correctly Reconnect the terminal board to the connector on the drive, then cycle the power to the drive.
Digital Operator Display Fault Name
to
to CPF26 to CPF35
CPF40 to CPF43
Control Circuit Error
CPU error
Cause Possible Solution
Hardware is damaged
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
E5
MECHATROLINK Watchdog Timer Error
The watchdog timed out.
Cause Possible Solution
Data has not been received from the PLC
Execute DISCONNECT or ALM_CLR, then issue a CONNECT command or SYNC_SET command and
proceed to phase 3. Refer to the SI-T3 Option Technical Manual for more details on troubleshooting.
Digital Operator Display Fault Name
EF0
Option Card External Fault
An external fault condition is present.
Cause Possible Solution
An external fault was received from the PLC
and F6-03 is set to a value other than 3.
• Remove the cause of the external fault.
• Remove the external fault input from the PLC.
Problem with the PLC program Check the PLC program and correct problems.
Digital Operator Display Fault Name
EF1
External Fault (input terminal S1)
External fault at multi-function input terminal S1.
EF2
External Fault (input terminal S2)
External fault at multi-function input terminal S2.
5.4 Fault Detection
200 YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual