Speed error

What does 61 mean?

The motor's actual speed deviates significantly from its commanded speed reference. This can be caused by a faulty encoder connection (if an encoder is used), or for Permanent Magnet Synchronous (PMS) motors, exceeding the pull-out torque. An uncorrected speed error leads to inaccurate motor control, poor process performance, and potential instability.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   For PMS motors, check the motor loading to ensure it has not exceeded its pull-out torque capability.

2. 4

   Review speed control loop parameters for proper tuning.