Output frequency at maximum limit

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The frequency converter's output frequency has reached or exceeded the maximum value set in parameter 4-19 (Max Output Frequency). This typically occurs when the drive is commanded to run faster than its configured limit, potentially indicating an over-speed condition or an incorrectly set limit for the application.

• Parameter P4-19 (Max Output Frequency) is set too low for the desired motor speed.
• The speed reference source (e.g., analog input, fieldbus) is commanding a frequency higher than the drive's maximum setting.
• Incorrect scaling of the speed reference input (e.g., 10V analog input scaled for 100Hz when P4-19 is 60Hz).
• A PID controller's output is commanding an excessively high speed to reach its setpoint.
• Motor slip compensation (if enabled) pushing the output frequency to its limit.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   1. Increase Parameter P4-19 (Max Output Frequency) to the desired maximum operating frequency, considering motor and mechanical limits.

2. 2

   2. Identify the active speed reference source (e.g., P3-00) and verify its scaling parameters (e.g., P3-03, P3-04 for analog input).

3. 3

   3. Monitor the active speed reference value in the drive's display (e.g., P16-00) and compare it to P4-19.

4. 4

   4. Adjust the external speed command source (e.g., potentiometer, PLC analog output) to prevent exceeding the drive's maximum limit.

5. 5

   5. If a PID controller is active, review its setpoint and tuning parameters (e.g., P7-30 to P7-35) to prevent overshoot or excessive output.