YASKAWA AC Drive-A1000 Technical Manual page 302

6.4 Fault Detection
Digital Operator Display
Cause
Hybrid IC failure on the power board
Digital Operator Display
Cause
Hardware is damaged
Digital Operator Display
Cause
Hardware is damaged
Digital Operator Display
to CPF26 to CPF34
Cause
Hardware is damaged
Digital Operator Display
Cause
Load is too heavy
Acceleration and deceleration times are set too
short
The load is locked up
Parameters are not set appropriately
Incorrect speed feedback scaling when using
terminal RP as speed feedback input in V/f
control
Motor brake is engaged
Digital Operator Display
Cause
PG encoder is disconnected, improperly
wired, or the PG option card or PG encoder are
damaged
Digital Operator Display
Cause
Noise interference along the PG cable
PG cable is not wired properly
PG option card or the PG encoder is damaged If the problem continues after cycling power, replace the PG option card or the PG encoder.
302
CPF22 Hybrid IC Failure
• 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.
Control Board Connection Error
CPF23
Connection error between the control board and the drive
• 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 Unit Signal Fault
CPF24
The drive capacity cannot be detected correctly (drive capacity is checked when the drive is powered up).
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.
Control Circuit Error
CPU error
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.
Speed Deviation (for Control Mode with PG)
dEv
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.
Reduce the load.
Increase the acceleration and deceleration times (C1-01 through C1-08).
Check the machine.
Check the settings of parameters F1-10 and F1-11.
• 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.
Ensure the motor brake releases properly.
Z Pulse Fault
dv1
The motor turned one full rotation without the Z Pulse being detected.
• Make sure the PG encoder is properly connected and all shielded lines are properly grounded.
• If the problem continues after cycling power, replace either the PG option card or the PG encoder.
Z Pulse Noise Fault Detection
dv2
The Z Pulse is out of phase by more than 5 degrees for the number of times specified in parameter F1-17.
Separate the PG cable lines from the source of the noise.
Rewire the PG encoder and properly ground all shielded lines.
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual