Siemens SIPART Series Compact Operating Instructions page 23

A linear movement of the magnet in the sensor range also generates a resistance change that is used to identify the
position. The following figure highlights the principle:
①
Magnet
②
Sensor
Figure 3-3 Resistance change depending on the position of the magnet
Non-linearity is corrected automatically in the SIPART PS2 positioner by software.
The great advantage of this principle is the absence of wear. Moreover, vibration, dampness and temperature only have a
minor impact on the measurement result.
4 Mounting
4.1 Mounting the NCS to the rotary actuator
Prerequisites
1. An EMC filter module in the positioner.
2. An NCS for rotary actuators 6DR4004-.N.10
3. A rotary actuator with interface to VDI/VDE 3845 and mounting console to VDI/VDE 3845, or a rotary actuator with
manufacturer-specific interface.
SIPART PS2 Non-Contacting Sensor (NCS)
A5E00097485-07, 01/2012
③
Resistance change
④
Angle
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