Siemens SINAMICS G120D - Basic Positioner and Position Control

Advanced commissioning
7.6 Basic positioner and position control
Converter with control units CU250D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB
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7.6
Basic positioner and position control
7.6.1
Basic positioner and position control
Overview
Position control means controlling the position of an axis. An "axis" is a machine or system
component that comprises the converter with active position control and the driven
mechanical system.
The basic positioner (EPOS) calculates the traversing profile for the time-optimized
traversing of the axis to the target position.
Figure 7-26 Basic positioner and position control
The basic positioner has the following operating modes:
•
Direct setpoint input (MDI):
The external control specifies the position setpo
int for the
axis.
•
Traversing block selection:
Position setpoints are saved in different traversing blocks
in the converter. The external control selects a traversing
block.
•
Referencing:
Referencing establishes t
he reference of the position
measurement in the converter to the machine.
•
Jogging:
This function is used to incrementally traverse the axis (Set
up).
•
Travel to fixed stop:
The converter positions the a
xis with a defined torque
against a mechanical fixed stop.