Overtorque 1

What does oL3 mean?

The drive's output current (or calculated torque in OLV, CLV, AOLV/PM, CLV/PM modes) has exceeded the threshold set in L6-02 for longer than the time specified in L6-03. This fault typically indicates either incorrect parameter settings for torque detection or a mechanical issue on the machine side causing excessive load on the motor. Ignoring this can lead to damage to the motor, gearbox, or driven equipment.

• Mechanical jamming or obstruction in the driven load requiring excessive torque.
• Sudden increase in load demand beyond the motor's or drive's capacity.
• Incorrect setting of parameter L6-02 (Overtorque 1 Detection Level) too low.
• Incorrect setting of parameter L6-03 (Overtorque 1 Detection Time) too short.
• Motor undersized for the peak torque requirements of the application.

Click steps to track your progress.

1. 1

   Inspect the mechanical system (e.g., gearbox, conveyor) for signs of jamming, binding, or unusual resistance.

2. 2

   Measure the drive's output current (A) during typical operation and during the overtorque event.

3. 3

   Review parameter L6-02 (Overtorque 1 Detection Level) and L6-03 (Overtorque 1 Detection Time); adjust based on load.

4. 4

   Verify motor parameters (P1-01 to P1-08) are correctly entered for accurate torque estimation.

5. 5

   Check for sudden load changes or shock loads during the operating cycle that might momentarily exceed the limit.

6. 6

   Compare the motor's rated torque (Nm) to the peak torque required by the application.