Yaskawa AC Drive Z1000 User Manual
Page 211
HOA Keypad 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.
HOA Keypad Display
Fault Name
oFA05, oFA06
Option Card Error Occurred at Option Port CN5
oFA10, oFA11
oFA12 to oFA17
Option Card Connection Error (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.
HOA Keypad Display
Fault Name
oH
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).
Cause
Possible Solution
Surrounding temperature is too high
• 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.
Load is too heavy
• Measure the output current.
• Decrease the load.
• Lower the carrier frequency (C6-02).
External cooling fan is stopped
• Replace the cooling fan.
• After replacing the cooling fan, set parameter o4-03 to 0 to reset the cooling fan maintenance.
HOA Keypad Display
Fault Name
oH1
Overheat 1 (Heatsink Overheat)
The heatsink temperature exceeded the drive overheat level. Overheat level is determined by drive
capacity (o2-04).
Cause
Possible Solution
Surrounding temperature is too high
• Check the temperature surrounding the drive.
• 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.
Load is too heavy
• Measure the output current.
• Lower the carrier frequency (C6-02).
• Reduce the load.
HOA Keypad Display
Fault Name
oH3
Motor Overheat Alarm (PTC Input)
• The motor overheat signal to analog input terminals A1 or A2 exceeded the alarm detection level.
• Detection requires setting multi-function analog inputs H3-02 or H3-10 to E.
Cause
Possible Solution
5.4 Fault Detection
YASKAWA ELECTRIC TOEP C710616 45E YASKAWA AC Drive – Z1000 User Manual
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Troubleshooting