Siemens SIPART PS2 Compact Operating Instructions page 6

WARNING
Unsuitable device for the hazardous area
Danger of explosion.
Only use equipment that is approved for use in the intended hazardous area and labelled accordingly.
•
WARNING
Loss of safety of device with type of protection "Intrinsic safety Ex i"
If the device has already been operated in non-intrinsically safe circuits or the electrical specifications have not been
observed, the safety of the device is no longer ensured for use in hazardous areas. There is a danger of explosion.
Connect the device with type of protection "Intrinsic safety" solely to an intrinsically safe circuit.
•
Observe the specifications for the electrical data on the certificate and/or in Chapter "Technical data (Page 15)".
•
3 Description
3.1 Function
The positioner facilitates the separate installation of the position detection system. The stroke or rotary angle is measured
directly at the actuator by means of a non contacting sensor. It is therefore possible to install the controller unit at some
distance away, e.g. on a mounting pipe or similar. The positioner is wired to the position detection system by means of an
electrical cable.
Such a separate installation is useful whenever the ambient conditions at the valve exceed the specified positioner values.
The NCS consists of a molded sensor for fixed installation and a magnet. The magnet is mounted to the spindle on linear
actuators, or to the stub shaft on part-turn actuators. The sensor housing is mounted onto the console on part-turn actuators
and to the bracket on linear actuators. The bracket can be a NAMUR type, or any other mounting bracket.
Auxiliary power is supplied to the NCS via the EMC filter module C73451-A430-D23 and EMC-compatibility is ensured at the
same time.
EMC filter module ordering options:
● Installed in the positioner; see Catalog FI 01
● For retrofitting in the positioner; Order No. C73451-A430-D23. For information on retrofitting the EMC filter module, refer
to the positioner operating instructions, chapter "Installation/Mounting".
①
Pneumatic line
②
Pneumatic line for double-action actuators
③
Position detection system (10 kΩ potentiometer, or NCS)
④
Electrical cable
⑤
Retrofittable EMC filter module (in the positioner)
⑥
Positioner
Figure 3-1 Separate installation of the NCS and positioner
6
SIPART PS2 Non Contacting Sensor (NCS)
A5E00097485-09, 09/2014