Motor Overload

Was bedeutet F007 ?

An internal electronic overload trip has been activated, signifying that the motor has experienced sustained excessive current beyond its programmed overload limit. This condition indicates an excessive mechanical load or incorrect motor parameters, risking motor overheating and permanent damage.

• Continuous mechanical overload on the motor, causing it to draw sustained current exceeding its nameplate rating.
• Incorrect motor nominal current (P1-50 [Motor Nominal Current]) or motor thermal model (P1-56 [Motor Thermal Time]) parameter settings in the drive.
• Motor cooling fan failure or obstructed ventilation fins, leading to inadequate motor cooling and subsequent thermal overload.
• Severe voltage unbalance (greater than 2%) at the motor terminals, causing excessive current in one or more phases.
• High mechanical friction or binding in the driven equipment, significantly increasing the required motor torque.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Measure the motor output current (P0-04 [Motor Current]) during operation and compare it to the motor's nameplate nominal current rating.

2. 2

   Verify that parameter P1-50 (Motor Nominal Current) is correctly set to the motor's nameplate full-load amperage.

3. 3

   Inspect the motor's cooling fan for proper operation and ensure its ventilation fins are free from obstruction and dirt.

4. 4

   Disconnect the motor from the load and run it unloaded, measuring the current (P0-04 [Motor Current]) to compare against the motor's no-load current specification.

5. 5

   Check for proper motor cable insulation resistance using a megohmmeter (Megger) to rule out phase-to-phase or phase-to-ground shorts in the motor or cable.