This guide is to show you how to enable Auto-MSET mode or Commutation Search mode for the motor in the event that either your motor does not have Halls or the Halls do not work.
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The Auto-MSET and Commutation Search modes ONLY apply to AC Brushless motors. The following instructions apply to versions 3.xx, 4.xx, 5.xx, & 6.xx of the A3200 software; versions 3.xx, 4.xx, and 5.xx of the Ensemble software; versions 3.xx, 4.xx, and 5.xx of the Soloist software; and all versions of Automation1. |
A little background....
There are two ways you can set up a motor to commutate without the use of Halls. 1) Auto-MSET, or 2) Commutation Search. Both require an AC brushless motor.
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These instructions assume that the user has already configured the rest of the parameters. Specifically, the AverageCurrentThreshold must be set up correctly for your motor before continuing. Doing so otherwise could damage the motor. Before changing the following parameters, ensure you are following all warnings listed in the Help File pages for each of these parameters. |
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Auto-MSET
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- Automation1: Set the Initialization Method of CommutationInitializationSetup to Auto-MSET
- Set AutoMsetCurrent to ~40% of the AverageCurrentThreshold parameter. I find this percent value to work best.
- Keep AutoMsetAngle at the default value of 90. There is usually no reason to change this. (this parameter does not exist in Soloist & Ensemble software)
- Set AutoMsetTime to 1000 ms (default value). This value normally always works, so there is usually no reason to change this.
- *Remove "Hall Sensor Fault" from the list of axis faults under the FaultMask parameter. Depending on your software version this may not be necessary.
**When you configure for Auto-MSET, the first time you Enable after a system reset could cause the stage to move up to 1/2 of the motor's electrical cycle.
Commutation Search
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Commutation Search
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- Automation1: Set the Initialization Method of CommutationInitializationSetup to Commutation Search
- Set AutoMsetCurrent to ~70% of the AverageCurrentThreshold parameter.
- Keep AutoMsetAngle at the default value of 90. There is usually no reason to change this. (this parameter does not exist in Soloist & Ensemble software)
- Set AutoMsetTime to 2-3 ms. This lower value is required because the AutoMsetCurrent value is higher.
- *Remove "Hall Sensor Fault" from the list of axis faults under the FaultMask parameter. Depending on your software version this may not be necessary.
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