Yaskawa iQpump Micro Manuel d'utilisateur télécharger pdf (Page 172)

Digital Operator Display Fault Name

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 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.

The acceleration or deceleration times are

too short

Calculate the torque needed during acceleration relative to the load inertia and the specified acceleration

time. If it is not possible to set the proper amount of torque, make the following changes:

• Increase the acceleration time (C1-01, C1-03).

• Increase the S-curve characteristics (C2-01 through C2-04).

• Increase the capacity of the 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 the MC does not trip 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.

• 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.

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 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

Option compatibility error

Cause Possible Solution

The option card installed into port CN5 is

incompatible with the drive

Check if the drive supports the option card to be installed. Contact Yaskawa for assistance.

Digital Operator Display Fault Name

oFA01

Option Card Fault at Option Port CN5

Option not properly connected

Cause Possible Solution

The option card connection to port CN5 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.

Digital Operator Display Fault Name

oFA03, oFA04 Option Card Error Occurred at Option Port CN5

oFA30 to oFA43 Communication Option Card Connection Error (CN5)

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.

5.2 Fault Detection

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Yaskawa iQpump Micro Manuel d'utilisateur Page 172

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