Siemens SIPART PS2 6DR50xx Instrukcje Operacyjne Strona 31

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Description
3.5 Mode of operation
SIPART PS2 with and without HART communications
Operating Instructions, 09/2007, A5E00074631-07
31
3.5.3 Block circuit diagram for signal-acting or dual-acting drives
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Figure 3-16 Block circuit diagram for the electropneumatic positioner, functional diagram
Basic circuit board with microcontroller and input circuit
Control pad with digital display and buttons
Piezo valve unit, always installed
Valve unit in dual-action positioner always installed
I
y
module for positioner
Alarm module for three alarm outputs and one binary input
SIA module (slit initiator alarm module)
Spring-loaded pneumatic positioning drive (single-acting)
Spring-loaded pneumatic positioning drive (dual-action)
Note
Alarm module and SIA module
Alarm module ⑥ and SIA module ⑦ can only be alternatively used.
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