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8-84
Drive Functions
Current direction of rotation at
start of spindle positioning
as selected direction of
positioning motion
("clockwise" or "counter-
clockwise")
against selected direction of
positioning motion
("clockwise" or "counter-
clockwise")
... higher
than value of S-0-0417, Positioning velocity threshold
in modulo mode
Positioning takes place at next target position to be
reached, while maintaining the velocity direction.
If
braking distance > distance start position-target position,
the positioning process can require one to several
revolutions, depending on the velocity at the start of the
positioning process.
Notes on Commissioning
Presettings
Start position of spindle positioning ...
... within
target position window (S-0-0418)
Positioning takes place over shortest
distance, if values do not leave target
position window during deceleration.
If values leave target position window
during deceleration, drive positions
according to selected direction of
positioning motion at next target position
to be reached.
If
braking distance < distance start-target
position, drive moves to target position
over shortest distance.
If
braking distance > distance start-target
position, positioning takes place after
deceleration of motor, with reversion of
velocity direction, at next target position
to be reached.
Fig. 8-70:
Dependence of the positioning process on the start position with
determined direction of positioning movement "clockwise" or
"counter-clockwise"
Current velocity at start of spindle positioning ...
than value of S-0-0417, Positioning velocity threshold
If
braking distance < distance start position-target position,
positioning takes place at next target position to be
reached, while maintaining the velocity direction.
If
braking distance > distance start position-target position,
positioning takes place after deceleration of motor, with
reversion of velocity direction, at next target position to be
reached.
Fig. 8-71:
Dependence of the positioning process on the velocity at the start of
spindle positioning with determined direction of positioning motion
"shortest distance"
Information on Hardware
The use of a home switch may be required.
See "Establishing Position Data Reference for Relative Measuring
Systems" in section "Establishing the Position Data Reference"
Determining kind of positioning and direction of positioning motion:
• S-0-0154, Spindle position parameter
Determining maximum velocity for spindle positioning:
• S-0-0222, Spindle positioning speed
MPH-02, MPB-02, MPD-02
... outside of
target position window (S-0-0418)
Positioning takes place at next target
position to be reached, while
maintaining the velocity direction.
If
braking distance > distance start
position-target position, the positioning
process can require one to several
revolutions, depending on the velocity at
the start of the positioning process.
The motor is decelerated to standstill.
The positioning process then takes
place at next target position to be
reached, according to the determined
direction of positioning motion.
... lower
in modulo mode
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
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