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E4 Help Desk

Commissioning a Synchronous Reluctance Motor

Note

This guide covers information related to Synchronous Reluctance Motors only.

Before commissioning, ensure that :

  • The drive has been mechanically and electrically installed.

  • A Control Source and Speed reference source has been selected. !!!!!(Insert link here to landing page for control and speed sources)!!

Commissioning Procedure

  1. Enter Motor Nameplate data

    Parameter

    Description

    P-07

    Rated Motor Voltage

    P-08

    Rated Motor Current

    P-09

    Rated Motor Frequency

    P-10

    Rated Motor Speed (Optional)

  2. Select Motor Control Mode

    Set P-51 = 4 (Synchronous Reluctance Motor)

  3. Run Autotune

    Set :

    P-52 > 1

    The autotune will start immediately and the display will show:

    Auto-t

    Caution

    The drive output will be enabled during the autotune process and the motor shaft may rotate. Ensure that it is safe to proceed before starting the autotune.

    Once the autotune is complete, the display will return to Stop.

  4. Run the Motor

    The motor can now be operated using the selected control source and speed reference.

Further Optimisation

Starting Performance

Several boost parameters are available to optimise starting, low-speed, and stopping performance.

Troubleshooting and FAQ's

Question

Answer/Solution

What measurements are taken during Autotune?

During Autotune, the drive measures and populates: P-56 Motor Stator Inductance (Lsd) and P-57 Motor Stator Inductance (Lsq).

Suitable Motor Types

Synchronous Reluctance Motors

Autotune Requirements

Motor must be unloaded where possible

Motor must be at standstill before starting

Correct motor data must be entered before autotune

Motor Will Not Start

  • Verify P-51 = 4 (Synchronous Reluctance Motors)

  • Check that the motor rated voltage has been entered correctly in P-07.

  • Verify motor nameplate data has been entered:

    P-08 Motor Rated Current

    P-09 Motor Rated Frequency

    P-10 Motor Rated Speed (if available)

  • Confirm the drive has a valid Run Command.

  • Confirm a valid Speed Reference has been selected. Check for active drive faults or warnings.

Autotune Fails

  • Verify P-51 = 4 (Synchronous Reluctance Motor)

  • Verify the motor nameplate data is correctly entered.

Poor Low-Speed Performance

  • Check that:

  • P-56 Motor Stator Inductance (Lsd) has been populated.

  • P-57 Motor Stator Inductance (Lsq) has been populated.

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