Technical information

83
Software Setup and Operation
Figure 65: Clockwise (+) rotation of the motor
Distance User Units
You may enter up to three letters that represent the distance or position units of your system.
Examples:
IN for Inches
GAL for Gallons
MTR for Meters
Any three ASCII characters are acceptable.
User Distance Per Motor Revolution
The units for lead screws are sometimes expressed as lead in “inches per revolutions”. (i.e.,
.2 in lead.) This means every revolution of the screw, moves the nut .2 inches. Lead IN/Rev
= 1/pitch. (Pitch = Rev/IN).
Enter the number of distance units the load would move if the motor turned exactly one
revolution. This allows you to set up all moves using distances or positions that apply directly
to the movement of the load. It also will displays all positional information in real units. For
example:
1 Motor revolution = 360.00 degrees enter 360.0 DEG
1 Motor revolution = .2 inch, enter 0.2000 IN
1 Motor revolution = .125 feet enter 0.1250 FT
The help area in the lower left corner of the PCX screen states that the value must be greater
than 50 and less than 25,000. Example #1, however, shows a value of 0.2000.
This is acceptable because the drive does not use the decimal point. The drive sees this entry
as a value of 2000 and it will provide 2000 unique positions for each revolution of the motor.
The feedback resolver actually produces 4096 steps for every revolution of the motor. The
smallest move the drive can make is 1 part in 4096.