I²xt overload advance warning

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This is an advance warning for an I²xt overload, indicating frequent and excessively long acceleration processes with motor overcurrent, or permanent motor overload where Imotor > Irmotor. It signals an impending trip condition if conditions do not change.

• Repetitive short-duration overloads, such as frequent starts or rapid acceleration with high inertia, pushing the motor's thermal limits.
• Motor parameters (e.g., C0020 Motor current, C0030 Overload factor) are set close to the operational threshold, triggering the warning prematurely.
• Increased mechanical load or friction in the driven system, causing the motor to draw higher current than typical for extended periods.
• Inadequate motor cooling due to dust buildup on fins or high ambient temperature, leading to faster thermal buildup even at nominal current levels.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   1. Observe the motor current (e.g., parameter P0005) on the drive display during various load conditions and compare to the motor's rated current.

2. 2

   2. Verify that motor protection parameters (e.g., C0020 Motor rated current) are correctly set according to the motor nameplate data.

3. 3

   3. Increase acceleration and deceleration times (e.g., C0026, C0027) to reduce current peaks and cumulative thermal stress during transient operations.

4. 4

   4. Check the motor and its cooling fan for accumulated dust, debris, or obstructions that might impede airflow, and clean if necessary.

5. 5

   5. Use an infrared temperature gun to measure the motor casing temperature and compare it to its rated operating temperature (if available).