Yaskawa L1000E AC Drive Technical Manual for CIMR-LE Models for Elevator Applications - Manual (Page 281)

6.3 Fault Detection
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Digital Operator Display Fault Name
oC
Overcurrent
Drive sensors have detected an output current greater than the specified overcurrent level.
Cause Possible Solution
The motor has been damaged due to overheating or the
motor insulation is damaged. • Check the insulation resistance.
• Replace the motor.
One of the motor cables has shorted out or there is a
grounding problem.
• Check the motor cables.
• Remove the short circuit and reapply power to the drive.
• Check the resistance between the motor cables and the ground terminal .
• Replace damaged cables.
The drive is damaged.
• Check the drive output side short circuit for broken output transistor.
B1 and U/V/W
- (negative) and U/V/W
• Contact your Yaskawa representative or nearest Yaskawa sales office.
The load is too heavy.
• Measure the current flowing into the motor.
• Replace the drive with a larger capacity drive if the current value exceeds the rated current.
• Determine if there is sudden fluctuation in the current level.
• Reduce the load to avoid sudden changes in the current level or switch to a larger drive.
Accel/decel ramp is too fast.
Calculate the amount of torque required for the desired acceleration and/or deceleration ramp relative to the inertia moment of the
load.
If the drive is not capable of producing that much torque in time, try the following setting changes:
• Reduce the acceleration and/or deceleration ramp (i.e., increase the accel/decel time).
• Use a larger capacity drive.
The drive is attempting to operate a specialized motor or
a motor larger than the maximum size allowed. • Check the motor capacity.
• Ensure that the rated capacity of the drive is greater than or equal to the capacity rating found on the motor nameplate.
Magnetic contactor (MC) on the output side of the drive
has turned on or off.
Set up the operation sequence so that the MC is not tripped while the drive is outputting current.
V/f setting is not operating as expected.
• Check the ratios between the voltage and frequency.
• Set parameters E1-04 through E1-10 appropriately (E3-04 through E3-10 for motor 2).
• Lower the voltage if it is too high relative to the frequency.
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 noise interference.
• Review the possible solutions provided for handling noise interference.
• Review the section on handling noise interference and check the control circuit lines, main circuit lines, and ground wiring.
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 which motor control method the drive is set to (A1-02).
• For IM motors, set A1-02 = “0”, “2”, or “3”.
• For PM motors, set A1-02 = “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 Connector CN5-A, Option Card Fault at Option Connector 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. Place the PG option card into the correct option port.
Digital Operator Display Fault Name
oFA01
Option Card Fault at Option Connector CN5-A
Option not properly connected
Cause Possible Solution
The option board connection to port CN5-A is faulty.
• Turn the power off 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 another option port. If the option card works properly in
a different option port, replace the drive because port CN5-A is damaged. If the error persists (oFb01 or oFC01 occur), replace
the option card.
Digital Operator Display Fault Name
, oFA05, oFA06
Option card error occurred at option port CN5-A
, oFA10, oFA11
to oFA12 to oFA17
to
oFA30 to oFA43
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.