Specifications

Positioning IP 240
If the actual value is greater than the position value of a newly selected position, the positioning
procedure must be subdivided into two steps:
1st step
Select position ( Fig. 10-15: Actual value 9300).
The drive is switched on and moves at rapid traverse speed in a negative direction toward
the target position.
The speed is switched to creep at the right BEE1 switching point (actual value 7400).
The drive is not switched off at the right BEE2 switching point (actual value 5300), as the
BEE2 range was approached in a negative direction.
When the position has been ”overrun”, the IP 240 signals that the reversal point has been
reached (BEE2 exited, actual value 4700) by setting status bit RIUM and the associated
interrupt bit RIU.
Control bit FREI=0 must now be transferred via the STEP 5 program to disable the IP
output (actual value 3400 or 1900).
2nd step
Select the same position once again.
The drive approaches the position in a positive direction. When the switching and
signalling ranges are entered, the configured interrupts are generated.
The module firmware disables the IP output at switching point BEE2 (actual value 4700).
Fig. 10-15. Approaching a Position with Backlash Compensation
Positive direction of travel
v
v
Reselection of the
target position
BEE2 BEE2 BEE1
Selection of
the
target position
Target position
5300 93007400470034001900
Negative direction of travel
BEE1
The IP firmware
disables the IP
output
IP signal for
reversal of
direction
BEE1
BEE2
IP output is
disabled over the
S5 CPU
Sample
actual value
1st step
2nd step
10-22 EWA 4NEB 811 6120-02a