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6.2.1.1. Distance / Longitudes Parameters
Slow speed/Creep speed/Correction
Slow speed/slow speed (r) = middle speed
Distance to the demand position at which the controller switches from high speed to slow speed. The
output high speed will be switched off.
Creep speed/creep speed (r) = slow speed
Distance to the demand position at which the controller switches from slow speed to creep speed.
The output slow speed will be switched off.
Correction/correction (r)
The over run distance can be programmed to compensate for distance from the switch-off point of
the motor to standstill.
Example:
The demand position is over run by 0.2 mm constantly. The data entry has to be 2.
The stop command is then moved forward by 0.2 mm.
With starting of the operation the stop offset is set first to "0" in order to be able to calibrate the over
run accurately. For an exact positioning the stop offset should be as small as possible (0.0 to 0.2
mm) i.e. the mechanical friction should be steady over the entire retract distance and the slow speed
and/or creep speed must be accordingly small adjusted. The value in register slow speed/slow
speed (r) must be larger than in creep speed/creep speed (r).
NOTE!
When positioning with PID correction stop serves as a
tolerance window.
Positioning with one speed
During setting the speeds in principle applies:
Slow speed = Creep speed = Correction
Slow speed: 1,0 mm
Creep speed: 1,0 mm
Correction: 1,0 mm
Slow speed/Creep speed
Position reached 100,0
Correction stop
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Configuration and Functions
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