YASKAWA U1000 iQpump Drive, Technical Manual, Page: 375 / 706

Digital Operator Display Fault Name
Excessive torque compensation
• Check the amount of torque compensation.
• Reduce the torque compensation gain (C4-01) until there is no speed loss and less current.
Drive fails to operate properly due to electrical
signal interference
• Review the possible solutions provided for handling electrical signal interference.
• Review the section on handling noise interference on page
411 and check the control circuit lines, main
circuit lines, and ground wiring.
Overexcitation gain is set too high
• Check if the fault occurs simultaneously with overexcitation function operation.
• Consider motor flux saturation and reduce the value of n3-13 (Overexcitation Deceleration Gain).
Run command was applied while motor was
coasting
• Set b3-01 to 1 to enable Speed Search at Start.
• Program the Speed Search command input through one of the multi-function contact input terminals
(H1- oo = 61 or 62).
The wrong motor code has been entered for
OLV/PM (Yaskawa motors only) or the motor
data are wrong
• Enter the correct motor code to E5-01.
• Set E5-01 to FFFF if using a non-Yaskawa PM motor. Set the correct motor data to the E5-
oo
parameters or perform Auto-Tuning.
The overcurrent level has exceeded the value
set to L8-27 (PM control modes)
Correct the value set to overcurrent detection gain (L8-27).
The motor control method and motor do not
match
• Check the control mode.
• For IM motors, set A1-02 to 0, 1, 2, or 3.
• For PM motors, set A1-02 to 5, 6, or 7.
The rated output current of the drive is too
small
Use a larger drive.
Digital Operator Display Fault Name
oFA00
Option Card Connection Error at Option Port CN5-A
Option compatibility error
Cause Possible Solution
The option card installed into port CN5-A is
incompatible with the drive
Check if the drive supports the option card to be installed. Contact Yaskawa for assistance.
A PG option card is connected to option port
CN5-A
PG option cards are supported by option ports CN5-B and CN5-C only. Connect the PG option card to
the correct option port.
Digital Operator Display Fault Name
oFA01
Option Card Fault at Option Port CN5-A
Option not properly connected
Cause Possible Solution
The option card connection to port CN5-A is
faulty
• Turn off the power and reconnect the option card.
• Check if the option card is properly plugged into the option port. Make sure the card is fixed properly.
• If the option is not a communication option card, try to use the card in a different option port. If the
option card works properly in a different option port, CN5-A is damaged, and the drive requires
replacement. If the error persists (oFb01 or oFC01 occur), replace the option card.
Digital Operator Display Fault Name
to oFA03 to oFA06
Option Card Error Occurred at Option Port CN5-A
, oFA10, oFA11
to
oFA12 to oFA17 Option Card Connection Error (CN5-A)
to
oFA30 to oFA43 Communication Option Card Connection Error (CN5-A)
Cause Possible Solution
Option card or 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
oFb00
Option Card Fault at Option Port CN5-B
Option compatibility error
Cause Possible Solution
The option card installed into port CN5-B is
incompatible with the drive
Make sure the drive supports the option card to be installed. Contact Yaskawa for assistance.
6.4 Fault Detection
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual 375
6
Troubleshooting