YASKAWA FP605 Installation & Primary Operation page 111

Code Name
CoF Current Offset Fault
CPF00 to
Control Circuit Error
CPF03, CPF07
to CPF08,
CPF11 to
CPF14, CPF16
to CPF24, and
CPF26 to
CPF39
Control Circuit Error (EEPROM
CPF06
memory Data Error)
dEv Speed Deviation
DIFF Differential Feedback Exceeded
dv7 Polarity Judge Timeout
EF0 Option Card External Fault
EF1 to EF8 External Fault (Terminal Sx)
Err EEPROM Write Error
FAn1 Drive Cooling Fan Fault
FDBKL WIRE Break
GF Ground Fault
HFB High Feedback Sensed
YASKAWA TOEPC7106171FD FP605 DRIVE INSTALLATION & PRIMARY OPERATION
Causes
The drive starts operation while the induced voltage
stays in the motor (during coasting to a stop or after
fast deceleration).
A drive hardware problem occurred.
The drive power supply was de-energized while a
communication option entered a parameter Write
command.
The load is too heavy.
The difference between the PID Feedback and
Differential Level Source [H3-xx = 2D] is more than
the level set in Y4-18 [Differential Level] for the time
set in Y4-19 [Differential Lvl Detection Time].
There is a disconnection in the motor coil winding.
The communication option received an external fault
from the controller.
MFDI terminal Sx caused an external fault through an
external device.
The wiring is incorrect.
External Fault [H1-01 = 20 to 2B] is set to MFDI
terminal Sx, but the terminal is not in use.
There was a problem with the EEPROM hardware.
The cooling fan stopped operating correctly.
The analog input from the terminal set for PID
Feedback [H3-xx = B] is more than 21mA or less
than 3mA for longer than 1 s in these conditions:
• b5-82 = 2 [Feedback Loss 4～20mA Detect Sel =
Fault]
• b5-01 ≠ 0 [PID Mode Setting ≠ Disabled]
• H3-01, H3-09, or H3-05 = 2 [Terminal A1/A2/A3
Signal Level Selection = 4 to 20 mA]
Overheating caused damage to the motor or the motor
insulation is not satisfactory.
The motor main circuit cable is contacting ground to
make a short circuit.
An increase in the stray capacitance of the cable and
the ground terminal caused an increase in the leakage
current.
There was a problem with the drive hardware.
The feedback level is more than the level set in Y1-11
[High Feedback Level] for the time set in Y1-12
[High Feedback Lvl Fault Dly Time].
20 Troubleshooting
Possible Solutions
• Make a sequence that does not restart operation when induced
voltage stays in the motor.
• Set b3-01 = 1 [Speed Search at Start Selection = Enabled].
• Use Speed Search from Fmax or Fref [H1-xx = 61, 62] to do a
speed search through one of the external terminals.
Note:
When controlling the PM motor, External Speed Search
commands 1 and 2 operate the same.
• Re-energize the drive.
• If the fault stays, replace the control board or the drive. For
information about replacing the control board, contact Yaskawa
or your nearest sales representative.
Set A1-03 = 2220, 3330 [Initialize Parameters = 2-Wire
Initialization, 3-Wire Initialization] and initialize the drive.
Decrease the load.
• Replace the feedback transducer or transducers.
• Make sure that the settings of Y4-18 [Differential Level] to Y4-20
[Differential Level Detection Sel] are correct.
Measure the motor line-to-line resistance and replace the motor if a
coil is disconnected.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input from the controller.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
Correctly connect the signal line to MFDI terminal Sx.
Correctly set the MFDI.
• Re-energize the drive.
• If the fault stays, replace the control board or the drive. Contact
Yaskawa or your nearest sales representative to replace the
board.
• Examine cooling fan operation.
• Re-energize the drive.
• Examine U4-03 [Cooling Fan Ope Time] and U4-04 [Cool Fan
Maintenance]. If the performance life of the cooling fan is
expired or if there is damage to the fan, replace the fan.
Make sure that you install the PID feedback source and it operates
correctly.
Measure the motor insulation resistance, and replace the motor if
there is electrical conduction or unserviceable insulation.
• Examine the motor main circuit cable for damage, and repair
short circuits.
• Measure the resistance between the motor main circuit cable and
the ground terminal. If there is electrical conduction, replace the
cable.
• If the wiring length of the cable is more than 100 m, decrease the
carrier frequency.
• Decrease the stray capacitance.
Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
• Decrease the feedback level less than Y1-11.
• Set Y1-11 and Y1-12 correctly.
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