2nd Motor Free Setting V/f Frequency 7 Exceeds Upper Limit

What does 291 mean?

For the second motor settings, this warning occurs when the seventh point of the free setting V/f curve (b112), which also acts as the maximum frequency in this mode, is set higher than the 2nd frequency upper limit (A261). This creates an inconsistent operational boundary for V/f control for the second motor, limiting the actual achievable frequency.

• Parameter b112 (Free setting V/f curve frequency point 7) for the second motor is set higher than parameter A261 (2nd frequency upper limit).
• The V/f curve's maximum frequency point (b112) is configured to exceed the allowed operational upper frequency for the second motor (A261).
• Inconsistent parameter configuration where the free setting V/f curve attempts to command a frequency beyond the defined system limits for the second motor.

Click steps to track your progress.

1. 1

   Read the current values of parameter b112 (Free setting V/f curve frequency point 7) and parameter A261 (2nd frequency upper limit).

2. 2

   Adjust parameter b112 to be less than or equal to parameter A261, ensuring the V/f curve point respects the upper frequency limit.

3. 3

   Alternatively, if a higher operational upper limit is required, increase A261 to a value greater than or equal to b112.

4. 4

   Save all parameter changes to the drive's memory and perform an inverter power cycle.