5.4 Fault Detection
YASKAWA ELECTRIC
TOEP C710687 02B FSDrive-MV1000 Instructions
149
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Digital Operator Display
Fault Name
CF
Control Fault
The torque limit was reached continuously for three seconds or longer while ramping to stop in
Open Loop Vector Control.
Cause
Possible Solutions
Motor parameters are set improperly.
Check the motor parameter settings and repeat Auto-Tuning.
Torque limit is set too low.
Set the torque limit to an appropriate value using parameters L7-01 to L7-04.
Load inertia is too big.
• Adjust the deceleration time (C1-02, C1-04, C1-06, C1-08).
• Set the frequency to the minimum value and interrupt the Run command when the drive
finishes decelerating.
The connection between motor and drive is
improper.
• Check for faulty wiring.
• Correct the wiring.
The line-to-line resistance has not been tuned.
Perform line-to-line resistance Auto-Tuning.
The stopping method setting is not appropriate.
The Run command fails to decelerate to a stop or is applied to unwanted machine.
A Run command was issued in the coast to stop
state.
• The Stop command is issued after the motor stopped.
• Enable Speed Search at start by setting b3-01 to 1.
Digital Operator Display
Fault Name
CFA
nn COF
Current Offset Fault
The current offset value at the current detection circuit exceeded the fault detection level.
Cause
Possible Solutions
Cell control board fault
Replace the cell control board.
Current detection circuit fault
Replace the current detection circuit.
Digital Operator Display
Fault Name
CFA
nn CUV
Undervoltage
The P side or N side voltage in the DC bus has fallen below the low voltage detection level.
Cause
Possible Solutions
The Power Cell input voltage is incorrect.
Correct the Power Cell input voltage.
The Power Cell input power fuse has blown.
Replace the Power Cell input power fuse.
Cell control board fault
Replace the cell control board.
Digital Operator Display
Fault Name
CFA
nn FU
Fuse Blowout
The P side or N side voltage in the DC bus has fallen below the low voltage detection level.
Cause
Possible Solutions
The Power Cell input power fuse has blown.
Replace the Power Cell input power fuse.
Phase loss for the input voltage of Power Cell
(secondary transformer)
Replace the cell control board.
Phase loss for the power supply of the
medium-voltage main circuit (primary
transformer)
Check the wiring of the input terminal for the main circuit of the panel.
Cell control board fault or voltage detection
board fault
Replace the cell control board or voltage detection board.
Digital Operator Display
Fault Name
CFA
nn IGBT_FLT
IGBT Fault
An IGBT fault has been detected.
Cause
Possible Solutions
Power Cell fault
Replace the Power Cell.
The motor has been damaged due to overheating
or the motor insulation is damaged.
• Check the insulation resistance of the motor.
• Replace the motor.
One of the motor cables has short circuited or
there is a grounding problem.
• Check the motor cable.
• Remove the short circuit.
Содержание FSDrive-MV1000 Series
Страница 8: ...8 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 38: ...1 4 Component Names and Configurations 38 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 106: ...3 9 Wiring Check 106 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 136: ...4 9 Checking and Saving Parameter Default Values 136 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 210: ...6 7 Spare Parts 210 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 222: ...B 1 European Standards 222 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...