High Slip Braking Overload

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This fault is triggered when the load inertia is excessively large, an external force rotates the motor, or deceleration is impeded. It can also occur if the n3-04 [HSB Overload Time] parameter is set too low. The drive detects this when the output frequency remains constant beyond the duration specified by n3-04. Ignoring this can lead to excessive heat and damage to the drive or motor.

• Excessively large load inertia exceeding the drive's braking capability, leading to high slip during deceleration.
• External mechanical force (e.g., gravity, another machine) driving the motor shaft during deceleration.
• Deceleration time (e.g., C1-02 [Deceleration Time 1]) set too short for the inertia, requiring high braking torque.
• Parameter n3-04 (HSB Overload Time) is set too low, tripping the fault prematurely.
• Failure or improper operation of external braking resistor (if used) leading to insufficient energy dissipation.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   1. Increase the deceleration time (e.g., C1-02) in small increments to reduce the required braking torque.

2. 2

   2. Increase parameter n3-04 (HSB Overload Time) to allow for longer periods of high slip braking.

3. 3

   3. Verify the external braking resistor (if installed) has the correct resistance and power rating, and that its terminals are connected correctly (e.g., B1, B2).

4. 4

   4. Measure the actual braking resistor resistance (using a multimeter) and compare it to the specified value.

5. 5

   5. Inspect the mechanical system for any external forces or back-driving conditions during deceleration.

6. 6

   6. Configure regenerative braking settings (e.g., n3-01 [HSB Level]) to optimize energy dissipation for the application.