Parker EME
Setting up Compax3
192-120101 N11 C3I11T11 November 2007
83
4.1.7.1
Measure reference
In this chapter you can read about:
You can select from among the following for the unit:
mm,
icrements *
angle degrees or
Inch.
The unit of measure is always [mm] for linear motors.
*
The unit "increments" is valid only for position values.
speed, acceleration and jerk are specified in this case in revolutions/s,
revolutions/s
2
and revolutions/s
3
(resp. pitch/s, pitch/s
2
, pitch/s
3
).
The measure reference to the motor is created with the value:
"travel distance per motor revolution / pitch" in the selected unit.
You can enter the "travel distance per motor revolution" as a fraction (numerator
divided by denominator). This is useful in the case of continuous operation mode or
in reset mode if the value cannot be specified as a rational number. This makes it
possible to avoid long-term drifts.
Rotary table control
M
70
4
144°
7
Unit: Degrees
Gear transmission ratio 70:4 => 4 load revolutions = 70 motor revolutions
Travel distance per motor revolution = 4/70 * 360° = 20.571 428 5 ...° (number
cannot be represented exactly)
Instead of this number, you have the option of entering it exactly as a numerator
and denominator:
Travel distance per motor revolution = 144/7
This will not result in any drift in continuous operation mode or in reset mode, even
with relatively long motion in one direction.
Conveyor belt
7
4
10mm
M
7
4
Unit of Travel
Travel distance per
motor revolution /
pitch
Input as numerator
and denominator
Example 1:
Example 2:
