maxOperatingSpeed
Specifies the maximum operating speed of the motor. It is used by the drive to limit the Velocity Command. The valid range for this parameter is 0.0 to 40,000.0 RPM.
thermalTimeConstant
Specifies the Thermal Time Constant of the motor. This parameter is used by the Unidrive SP for thermal protection of the motor. The drive models the temperature of the motor using a formula that generates an overload accumulator value. The formula is a function of the Thermal Time Constant. When the accumulator reaches 100%, the drive can trip or foldback depending on other drive settings. For more information on the Thermal Time Constant, please refer to the Unidrive SP Advanced User Guide (parameters 4.15, 4.16, and 4.19).
encoderPhaseAngle
This is the angle between rising edge of the V commutation signal and the peak of VVW backEMF signal when rotating the motor in the clockwise direction. Reference for the clockwise direction is looking at the front end of the motor shaft. See Unidrive SP Advanced User Guide for more information (parameter 3.25).
Verification and Checkout
Follow the steps listed below to verify the user defined motor was entered properly.
1.Once the .ddf file is complete and saved, run PowerTools Pro EZ
2.Select a new
3.Expand the Hardware branch, and click on the Drive/ Encoder view
4.On the Drive/Encoder view, select the new motor from the Motor Type list box
5.Click on the Motor tab on the bottom half of the view
6.On the Motor tab, verify that all of the parameters match the values entered into the .ddf file
7.If all parameters match, then the motor entry process is complete
Note
For safety reasons, it is a good idea to double check that the key motor parameters below have been specified correctly.
•Motor Ke
•Motor Resistance
•Motor Inductance
•Motor Peak Current
• Motor Continuous Current
Creating a Custom Motor File | www.emersonct.com | 127 |
