Lenze IMSS500+ Simple Servo 500 600 i1000 - Manual (Page 40)

SimpleServo 500/600/i1000 User Manual Rev 3.4
5.8.2 Autophasing
Autophasing is the feature of the SimpleServo drives that helps determine some important motor
parameters when using a motor which is not in the MotionView database. Autophasing will determine
Hall order sequence, Hall sensor polarity and encoder channel relationship (B leads A or A leads B for
CW rotation).
To perform autophasing:
1. Complete steps in Section 5.8.1 “Setting custom motor parameters” above. If the motor file
you are trying to autophase already exists on your hard drive, simply load it per “Selecting
custom motor” section above.
2. Make sure that the motor’s shaft is not connected to any mechanical load and can freely
rotate.
3. Make sure that the drive is disabled.
4. Do not edit field “Hall order” and check boxes “inverted”, ”B leads A for CW” because their
values are ignored for autophasing.
5. Click OK to dismiss motor selection dialog. MotionView responds with the question “Do you
want to perform autophasing?”
6. Click OK. Safety reminder dialog appears. Click “Proceed” and wait until autophasing is
completed.
7. If there was a problem with motor connection and/or hall sensor connection, MotionView will
respond with an error message. Correct wiring problem(s) and repeat steps 1 – 6.
8. If autophasing is completed with no error then MotionView will return to motor dialog box and
parameter fields “Hall order” and check boxes “inverted”, ”B leads A for CW” will be filled with
correct values.
9. Click “Save File” to save motor file to disk (you can use the same filename as you use to save
initial data in step 1) and click OK to send motor data to the drive.
5.8.3 Custom Motor Data Entry
Motor Parameters dialog has three sections (frames) dividing motor parameters on groups:, Electrical
constants, Mechanical constants, and Feedback. When creating custom motor entry you must supply
all parameters listed in these sections. All entries are mandatory except inertia (Jm) parameter. You
may enter 0 if you are not sure of a value.
Electrical constants.
• Motor Torque Constant (Kt).
Be careful with the units! This must be set in Newton-Meters per Amp RMS (N-m/A). The torque
constant for many motors will be given in different English units such as pound-inches per Amp
(lb-in/A) or ounce-inches per Amp (oz-in/A). You will need to convert these English units to metric.
To convert lb-in/A to N-m/A, multiply by 0.1130.
To convert oz-in/A to N-m/A, multiply by 0.00706.
Example: Suppose we are given a Kt = 0.69 lb-in/A. Multiplying by the appropriate
conversion factor yields:
Kt = (0.69 lb-in/A)(0.1130) = 0.0780 N-m/A (therefore the entry for Kt would be 0.078)
Note
Round the calculated result to 3 significant places.
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