Function Module Position Control - Siemens SINAMICS S120 Function Manual

Extended Functions

Function module position control

4.23 Function module position control
4.23.1 General features
The position controller essentially comprises the following parts:
S Position actual value conditioning (including the lower-level measuring probe
evaluation and reference mark search)
S Position controller (including limits, adaptation and the pre-control calculation)
S Monitoring functions (including standstill, positioning, dynamic following error
monitoring and cam signals)
S There is still no position actual value conditioning for distance-coded measuring
systems.
4.23.2 Integration
The position controller function module is integrated into the system as follows:
Commissioning
The function module "position control" can be activated via the commissioning
Wizard or the drive configuration (configure DDS).
When the function module "basic positioner" (r0108.4 = 1) is activated, then the
function module "position control" (r0108.3) is automatically activated.
The current configuration can be checked in parameter r0108.
The position controller can be parameterized in a user-friendly fashion using the
screen forms in STARTER.
The position control function module must always be used when using the basic
positioner function.
If the function module "position control" is active, and to optimize the speed con-
troller, a function generator signal is interconnected to the speed controller input
p1160, then the position controller monitoring functions respond. In order that this
does not happen, the position controller must be disabled (p2550 = 0) and go into
the tracking mode (p2655 = 1, for control using PROFIdrive telegram 110
PosSTW.0 = 1), so that the monitoring functions are disabled and the position set-
point is tracked.
4-236
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition