YASKAWA V1000

LED Operator Display Fault Name
oFA00
Option Card Connection Error at Option Port CN5-A
The option card is incompatible with the drive.
Cause Possible Solution
The option card is incompatible with the
drive.
Use a compatible option card.
LED Operator Display Fault Name
oFA01
Option Card Fault (Port A)
Replace the option card.
Cause Possible Solution
The option card is not connected properly to
the drive.
Turn the power off and reconnect the option card.
LED Operator Display Fault Name
oFA03
Option Card Fault (port A)
Option card self-diagnostic error
oFA04
Option Card Fault (port A)
An error occurred attempting to write to the option card memory.
to
oFA30 to oFA43
Option Card Fault (port A)
Communication ID error
Cause Possible Solution
Option card or hardware is damaged. Replace the option card. Contact Yaskawa for consultation.
LED Operator Display Fault Name
oH
Heatsink Overheat
The temperature of the heatsink exceeded the value set to L8-02. 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).
Internal cooling fan is stopped. • After replacing the drive, reset the cooling fan maintenance parameter (o4-03 = “0”).
LED Operator Display Fault Name
oH1
Overheat 1 (Heatsink Overheat)
The temperature of the heatsink has exceeded 10 °C plus the default value of L8-02.
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.
The internal cooling fan has reached its
performance life or has malfunctioned.
• Check the maintenance time for the cooling fan (U4-04).
• After replacing fan, reset the fan maintenance time (o4-03 = “0”).
Current flowing to control circuit terminal
+V exceeded the tolerance level.
• Check the current level of the terminal.
• Set the current to the control circuit terminal to be 20 mA or less.
LED Operator Display Fault Name
oH3
Motor Overheat Alarm (PTC Input)
• The motor overheat signal to analog input terminal A1 or A2 exceeded the alarm detection level.
• Detection requires multi-function analog input H3-02 or H3-10 be set to “E”.
Cause Possible Solution
6.4 Fault Detection
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
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Troubleshooting