Wrong signal source polarity

What does SP mean?

This fault indicates that the polarity of an analog input signal (e.g., set-value, feedback) is inverted or incorrect, causing the drive to interpret the signal incorrectly. By default, this condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as incorrect polarity can lead to unstable or dangerous operation. Manual reset is required.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Review drive parameters for polarity inversion: Check if there's a parameter in the drive that needs to be adjusted for analog input scaling or polarity.

2. 4

   Ensure signal source is correct: Verify that the signal source is compatible with the drive's input type (voltage/current).

3. 5

   Measure signal voltage/current: Use a multimeter to verify the actual signal value and its polarity at the input terminals.