Basic Positioner And Position Control - Siemens SINAMICS G120 Function Manual

Basic positioner
3.1

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 inverter 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 3-1
The basic positioner has the following operating modes:
• Direct setpoint input (MDI):
• Traversing block selection:
• Referencing:
• Jogging:
• Travel to fixed stop:
Basic positioner
Function Manual, 04/2015, FW V4.7 SP3, A5E34257659B AB
Basic positioner and position control
The external control specifies the position setpoint for the
axis.
Position setpoints are saved in different traversing blocks
in the inverter. The external control selects a traversing
block.
Referencing establishes the reference of the position
measurement in the inverter to the machine.
This function is used to incrementally traverse the axis (Set
up).
The inverter positions the axis with a defined torque
against a mechanical fixed stop.
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