YASKAWA P1000 Technical Manual page 198

6.4 Fault Detection
HOA Keypad Display
The motor has been damaged due to overheating
or the motor insulation is damaged
One of the motor cables has shorted out or there is
a grounding problem
The load is too heavy
The acceleration or deceleration times are too short
The drive is attempting to operate a specialized
motor or a motor larger than the maximum size
allowed
Magnetic contactor (MC) on the output side of the
drive has turned on or off
V/f setting is not operating as expected
Excessive torque compensation
Drive fails to operate properly due to noise
interference
Overexcitation gain is set too high
Run command was applied while motor was
coasting
The rated output current of the drive is too small Use a larger drive.
HOA Keypad Display
oFA00
Cause
The option card installed into port CN5 is
incompatible with the drive
HOA Keypad Display
oH
Cause
Surrounding temperature is too high
Load is too heavy
External cooling fan is stopped
198
• Check the insulation resistance.
• Replace the motor.
• 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.
• 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.
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)
• Increase the S-curve characteristics (C2-01 and C2-02)
• Increase the capacity of the drive.
• 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.
Set up the operation sequence so the MC does not trip while the drive is outputting current.
• Check the ratios between the voltage and frequency.
• Lower the voltage if it is too high relative to the frequency.
• Check the amount of torque compensation.
• Reduce the torque compensation gain (C4-01) until there is no speed loss and less current.
• Review the possible solutions provided for handling noise interference.
• Review the section on handling noise interference on page
main circuit lines, and ground wiring.
• Check if the fault occurs simultaneously with overexcitation function operation.
• Consider motor flux saturation and reduce the value of n3-13 (Overexcitation Deceleration Gain).
Set b3-01 to 1 to enable Speed Search at Start.
Option Card Connection Error at Option Port CN5
Option compatibility error
Check if the drive supports the option card to be installed. Contact Yaskawa for assistance.
Heatsink Overheat
The heatsink temperature exceeded the overheat pre-alarm level set to L8-02. The default value for
L8-02 is determined by drive capacity (o2-04).
• Check the temperature surrounding the drive. Verify temperature is within drive specifications.
• Improve the air circulation within the enclosure panel.
• Install a fan or air conditioner to cool the surrounding area.
• Remove anything near the drive that might be producing excessive heat.
• Measure the output current.
• Decrease the load.
• Lower the carrier frequency (C6-02).
• Replace the cooling fan.
• After replacing the cooling fan, set parameter o4-03 to 0 to reset the cooling fan maintenance.
YASKAWA SIEP YAIP1B 01B YASKAWA AC Drive – P1000 Bypass Technical Manual
Fault Name
223 and check the control circuit lines,
Fault Name
Possible Solution
Fault Name
Possible Solution
.