Operating Instructions ACTIVE 06/07106
106 Operating Instructions ACTIVE 06/07
Positioning, Operation Mode 458 = 1
The diagram shows how the positioning to the set positioning distance is effected. The
positioning distance remains constant at different frequency values. At the reference
point, the position signal S
Posi
is generated. Starting from frequency f
max
, the positioning
is effected at the set
Deceleration (Clockwise) 421. At a lower frequency value f
1
, the
frequency remains constant for some time before the drive is stopped at the set decel-
eration.
If, during acceleration or deceleration of the machine, positioning is started by the
signal S
Posi
, the frequency at the time of the positioning signal is maintained.
f
f
max
f
1
S
pos i
U
U
min
t
Digita l In put
6
Deceleration (Clock wise)
421
Examples of reference positioning as a function of the parameter settings selected.
− The reference point is registered according to the parameter
Signal Sources 459
in operation mode 16–S6IND, rising edge by a signal on digital input 6.
− The Positioning distance 460 with parameter value 0.000U (default) defines a
direct stop of the drive with the deceleration behavior selected in parameter
Op-
eration Mode
630 and the selected Deceleration (Clockwise) 421. If a Position-
ing distance
460 is set, the positioning is effected at the set deceleration.
− The Signal correction 461 of the signal propagation time from the measurement
point to the frequency inverter is not used if it is set to 0 ms.
− The Load correction 462 can compensate a faulty positioning by the load behav-
ior. By default, this function is deactivated, i.e. set to 0.
− The Activity after positioning 463 is defined by operation mode 0–End of posi-
tioning.
− The Waiting Time
464 is not considered because operation mode 0 is selected for
the parameter
Activity after positioning
463.
− The actual value Rotations
470 enables a direct comparison to the required Posi-
tioning distance
460. In the case of deviations, a Signal correction
461 or Load
correction
462 can be carried out.
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