SKS Sweden Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series, Operating Instructions Manual, Page: 128 / 260

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Operating Instructions ACU
09/08
Examples of reference positioning as a function of the parameter settings selected.
− The reference point is registered according to the
Signal sources
459 parameter
in operation mode 16–S6IND, pos. 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 affected at the set deceleration.
−
The
Signal correction
461 of the signal run time from the measurement point to
the frequency inverter is not used if it is set to 0ms.
−
The
Load correction
462 can compensate a faulty positioning by the load be-
havior. 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
Action after positioning
463.
−
The actual value
Revolutions
470 enables a direct comparison to the required
Positioning distance
460. In the case of deviations, a
Signal correction
461 or
Load correction
462 can be carried out.
11.6.2 Axle Positioning
For axle positioning a feedback system is mandatory. In most cases, an expansion
module for the feedback evaluation is needed as well. The operation modes for pa-
rameter
Operation mode Speed sensor 2
493 are to be set to 1004 or 1104. For in-
formation on how to set the parameter, refer to the instructions on the optional ex-
tension module. The positioning is started if a start signal is received and the fre-
quency drops below an adjustable frequency limit. The machine stops with the se-
lected stopping behavior at the entered position angle.
To ensure the correct function of the axle positioning, the speed controller should be
optimized after the guided commissioning. This is described in the chapter "Speed
controller".
Via the parameter
Reference orientation
469, the angle between the reference point
and the required position is entered.
If this value is changed while the machine is at a standstill, the positioning operation
is carried out again at a frequency of 0.5 Hz. For this, a stopping behavior must be
selected for the parameter
Operation mode
630 which impresses a starting current
either permanently when the drive is at a standstill or for the stopping time (refer to
chapter „Stopping Behavior“).
Parameter Settings
No. Description Min. Max. Fact. sett.
469 Reference orientation 0.0° 359.9° 0.0°
Caution!
During the positioning operation, the direction of rotation of the drive
may change, regardless of whether the command Start clockwise or
Start anticlockwise was activated.
Make sure that the change of the direction of rotation cannot result in
any personal or material damage.
Operating Instructions ACU 09/08 126