Emerson P/N 400361-00 manual Editing the Spmotor.ddf File, Header Section, Revision, NameCount

14 Creating a Custom Motor File

PowerTools Pro EZ software obtains the names and parameters of all motors in the Motor Type list box from various Motor Data Definition Files (.DDF file extension). The list of default (or standard) motors is automatically loaded during the PowerTools Pro EZ installation and is located in the same directory as the PowerTools Pro EZ software. The list of standard motors is called “Spstdmotor.DDF”. Another file, called “Spmotor.ddf”, is also installed with PowerTools Pro EZ so that the user can enter his/her own custom motors. The Spmotor.ddf file does not have any motor definitions in it by default. When the user wishes to add a new motor, the motor data is added to the Spmotor.ddf file.

Note

For those users familiar with .ddf files used with En, Epsilon, and MDS drives, the .ddf files for those systems may NOT be copied and pasted into Spmotor.ddf. The reason that the file may not be simply copied is that the ddf file for the Unidrive SP has different parameters that that for the En, Epsilon, and MDS drives. Also, some of the parameters (i.e. Phase Resistance) may have a similar name, but are defined differently and/or may have different units for the Unidrive SP than for the En, Epsilon, or MDS.

Editing the Spmotor.ddf File

The Spmotor.DDF file is a text file setup with carriage returns as parameter separators. It can be accessed and edited with any general-purpose text editor such as

Header

Information

Motor

Definition

Information

[Definition]

revision=0x4132

nameCount=2

[Motor0]

name=User1

folder=UploadedMotor

peakCurrent=9.73

continuousCurrent=3.8

motorPoles=6

rotorInertia=0.000110

motorKE=51.0

phaseResistance=2.9

phaseInductanceSP=3.7

maxOperatingSpeed=3000

thermalTimeConstant=400

encoderPhaseAngle=0

[Motor1] name = User2

folder = 400VCustomMotors peakCurrent = 8.1 continuousCurrent = 2.7 motorPoles = 6 rotorInertia = .00025 motorKE = 98 phaseResistance = 6.8 phaseInductanceSP = 12.15 maxOperatingSpeed = 3000 thermalTimeConstant = 400 encoderPhaseAngle = 60

Windows Notepad. In order for some text editors to read the file, you will have to create an association of the .ddf file extension to a text editor in Windows Explorer. This can be done by right-clicking on the .ddf file to be edited, and then selecting “Open With…” from the list. In the “Open With” pop-up, select the text editing software you wish to use.

After you have completed editing the file, be sure to save the changes. You must be careful to save the edited file as a .ddf file and not a .txt file. If the file is saved with a .txt extension, it will be unusable as a .ddf file.

Figure 120: Example .ddf file

Figure 120 above is an example of a .ddf file that has two custom motors entered into it. The .ddf file is made up of two sections called the Header and the Motor Definition sections. Following is a detailed description of the two sections.

Header Section

The header includes the revision and serial number information along with a count of how many motor definitions are included in the particular file.

Revision

This parameter is fixed and is set by the PowerTools Pro EZ software revision during installation. This parameter is not to be changed by the user.

NameCount

The NameCount parameter defines the number of motor definitions contained in the .ddf file. For example. if four motor definitions exist in the .ddf file, this parameter should be set equal to 4 which will cause PowerTools Pro EZ to recognize only the first four (4) motor definitions in the file.

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