YASKAWA A1000 HHP - Page 186

Digital Operator Display Fault Name
There is a faulty connection between the
terminal board and the control board
• Turn off the power and reconnect the terminal board.
• 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
or
CPF20 or CPF21 Control Circuit Error
Cause Possible Solution
Hardware 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
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
to
to
CPF26 to CPF35
CPF40 to CPF45
Control Circuit Error
CPU error
Cause Possible Solution
Hardware 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
dEv
Speed Deviation (for Control Mode with PG and AOLV/PM without PG)
The deviation between the speed reference and speed feedback is greater than the setting in F1-10 for
longer than the time set to F1-11.
Cause Possible Solution
Load is too heavy Reduce the load.
Acceleration and deceleration times are set too
short
Increase the acceleration and deceleration times (C1-01 through C1-08).
The load is locked up Check the machine.
Parameters are not set appropriately Check the settings of parameters F1-10 and F1-11.
Incorrect speed feedback scaling when using
terminal RP as speed feedback input in V/f
control
• Set H6-02 to the same value as the speed feedback signal frequency when the motor runs at maximum
speed.
• Adjust the speed feedback signal using parameters H6-03 through H6-05.
• Make sure the speed feedback signal frequency does not exceed the maximum input frequency of
terminal RP.
2.4 Fault Detection
186
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual