Siemens SIPART PS2 Instruções de funcionamento do Compact - Página 22

Procurar online ou descarregar pdf Instruções de funcionamento do Compact para Equipamento industrial Siemens SIPART PS2. Siemens SIPART PS2 35 páginas. Mounting bracket kit
Também para Siemens SIPART PS2: Instruções de instalação (4 páginas), Manual de Instruções (28 páginas), Instruções de instalação (4 páginas), Manual de instalação do hardware (30 páginas), Descrição técnica (26 páginas), Instruções de instalação do kit (9 páginas), Instruções de instalação (11 páginas)

①

Pneumatic line

②

Pneumatic line for double-action actuators

③

Position sensing 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

3.2

Mode of operation

The NCS contains a magnetic field sensor. This sensor changes its electrical resistance in response to the immediate

presence of a permanent magnet. The sensor has a high signal-to-noise ratio to external magnetic fields due to the

measurement method used.

The following figure shows the mode of operation with a rotating magnet.

①

Magnet

②

Sensor

Figure 3-2

Relative resistance change depending on the angle of the magnet

The figure shows that a circular movement of the magnet generates a sinusoidal change of the resistance. The mechanical

stops of the fitting ensure that only one part (quadrant) of the sinusoidal curve is used at any one time. The principle-related

non-linearity of the curve is corrected by means of software based on a curve that is stored in the positioner.

③

Resistance change

④

Angle

SIPART PS2 Non-Contacting Sensor (NCS)

A5E00097485-07, 01/2012