YASKAWA T1000V Technical Manual page 249

LED Operator Display
oFA03
oFA04
oFA30 to oFA43
to
Cause
Option card or hardware is damaged.
LED Operator Display
Cause
Surrounding temperature is too high.
Load is too heavy.
Internal cooling fan is stopped.
LED Operator Display
Cause
Surrounding temperature is too high.
Load is too heavy.
The internal cooling fan has reached its
performance life or has malfunctioned.
Current flowing to control circuit terminal
+V exceeded the tolerance level.
LED Operator Display
Cause
Motor has overheated
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Option Card Fault (Port A)
Option Card Self-diagnostic Error
Option Card Fault (Port A)
An error occurred attempting to write to the option card memory.
Option Card Fault (Port A)
Communication ID error
Replace the option card. Contact Yaskawa for consultation.
Heatsink Overheat
oH
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).
• 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 drive, reset the cooling fan maintenance parameter (o4-03 = "0").
Overheat 1 (Heatsink Overheat)
oH1
The temperature of the heatsink has exceeded the default of L8-02 (About 10°C).
• 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.
• Measure the output current.
• Lower the carrier frequency (C6-02).
• Reduce the load.
• Check the maintenance time for the cooling fan (U4-04).
• If U4-04 exceeds 90%, replace the cooling fan.
• After replacing fan, reset the fan maintenance time (o4-03 = "0").
• Check the current level of the terminal.
• Set the current to the control circuit terminal to be 20 mA or less.
Motor Overheat Alarm (PTC Input)
oH3
• 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".
• 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.
Fault Name
Possible Solution
Fault Name
Possible Solution
Refer to Cooling Fan Replacement on page
Fault Name
Possible Solution
Refer to Cooling Fan Replacement on page
Fault Name
Possible Solution
6.4 Fault Detection
288.
288.
249
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