DG-IRMCK203 Datasheet, PDF (18/67 Pages) International Rectifier – Application Developer’s Guide

IRMCK203 Application Developer’s Guide
The second tab is labeled “Parameter Export.” This worksheet shows the calculated write register values and is the
sheet that needs to be exported for use in ServoDesigner.
Enter Motor and Application Parameters in Excel
The first stage of configuring drive parameters involves entering the correct settings for a specific motor and custom
application requirements.
Step 1. Initialize a motor setup sheet for the motor.
Click on the “User Entries” sheet tab to select the motor setup worksheet. If desired, double-click the sheet tab and
change the tab title to identify the motor. The first line of the motor setup worksheet describes the motor. Double
click on column B and enter a description of the motor. (The description is optional; it’s not used in the calculations
and is not exported to ServoDesigner.)
Step 2. Enter Motor Information.
The motor information section of the “User Entries” worksheet contains parameter settings that should be available in
the motor’s datasheet or on its nameplate. To enter a value for each parameter, double click in column B on the
same line as the parameter name. When the mouse is moved over column B for each parameter, a short description
of the parameter is shown in a help bubble.
Figure 8. Motor Information in User Entries Worksheet
More detailed descriptions are provided below.
Hz
The rated frequency of the motor (in Hertz).
RPM
The rated speed of the motor (in RPM).
Lq
Motor per phase inductance (in Henry).
R_Stator
Per phase resistance of the motor plus cable (in ohms).
Amps
Inertia
The rated current of the motor (in Amps rms).
Total inertia (motor inertia plus load in Kg-m²). If total load inertia is not
specified in the available design data, use a best estimate and adjust the value later
when fine-tuning drive operation (refer to Section 3.1.2).
Kt
Motor torque constant (in Newton-Meter per Amps rms).
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