YASKAWA T1000V - Page 249

6.4 Fault Detection
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 249
Troubleshooting
6
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 (90-100°C). 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.
• Replace the cooling fan. Refer to Cooling Fan Replacement on page 288.
• 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 the default of L8-02 (About 10°C).
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).
• If U4-04 exceeds 90%, replace the cooling fan. Refer to Cooling Fan Replacement on page 288.
• 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
Motor has overheated
• Check the size of the load, the accel/decel times and the cycle times.
• Decrease the load.
• Increase the acceleration and deceleration times (C1-01 through C1-08).
• Adjust the V/f pattern (E1-04 through E1-10). This will mainly involve reducing E1-08 and E1-10.
• Be careful not to lower E1-08 and E1-10 excessively, as this reduces load tolerance at low speeds.
• Check the motor-rated current.
• Enter the motor-rated current as indicated on the motor nameplate (E2-01).
• Ensure the motor cooling system is operating normally.
• Repair or replace the motor cooling system.