Overtorque Detection 1

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This fault indicates that the machine has encountered a mechanical lock or the drive parameters are incorrectly configured for the load. The drive triggers this fault when its output current exceeds the level set in L6-02 for a duration longer than L6-03. Prompt resolution is crucial to prevent mechanical damage to the machine or motor.

• Mechanical jam or blockage in the driven equipment, preventing shaft rotation.
• Inertia of the load is too high for the motor or the acceleration time is set too short (e.g., C1-01 [Acceleration Time 1]).
• Motor is undersized for the application's continuous or peak torque requirements.
• Overtorque detection level (e.g., L6-01 [Overtorque Detect Level]) is set too low for the application.
• Insufficient motor voltage (e.g., due to line voltage sag) leading to reduced available torque.

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1. 1

   1. Mechanically inspect the driven machine for any jams, blockages, or excessive friction.

2. 2

   2. Increase acceleration time (e.g., C1-01) in small increments to allow smoother ramp-up.

3. 3

   3. Adjust the Overtorque Detect Level (e.g., L6-01) to a value suitable for the application's peak loads.

4. 4

   4. Verify motor rated current (P2-01) and motor rated torque (derived from P2-04, P2-05) parameters are correct.

5. 5

   5. Monitor output current (e.g., U1-04 [Output Current]) during operation to identify peak loads and adjust thresholds accordingly.

6. 6

   6. Perform a mechanical coupling inspection between the motor and load for damage or misalignment.