SIPART PS2 with and without HART communications
Operating Instructions, 09/2008, A5E00074631-08
5
Table of contents
1 Introduction.............................................................................................................................................. 11
1.1 Purpose of this documentation ....................................................................................................11
1.2 History..........................................................................................................................................11
1.3 Further information
.......................................................................................................................11
2 General safety notes
................................................................................................................................ 13
2.1 General information .....................................................................................................................13
2.2 Correct usage...............................................................................................................................13
2.3 Laws and directives .....................................................................................................................13
2.4 Measures .....................................................................................................................................14
2.5 Qualified Personnel......................................................................................................................15
2.6 SIL applications............................................................................................................................15
3 Description............................................................................................................................................... 17
3.1 Function .......................................................................................................................................17
3.2 Structure.......................................................................................................................................17
3.2.1 Overview of structure ...................................................................................................................17
3.2.2 Structure of the nameplate
...........................................................................................................20
3.3 Operation with natural gas
...........................................................................................................20
3.3.1 Safety notes for operation with natural gas .................................................................................20
3.3.2 Natural gas as an actuator medium.............................................................................................21
3.4 Device component
s .....................................................................................................................23
3.4.1 Overview of device components
..................................................................................................23
3.4.2 Motherboard
.................................................................................................................................24
3.4.3 Electrical connections ..................................................................................................................25
3.4.4 Pneumatic connections................................................................................................................25
3.4.4.1 Pneumatic connection on the standard controller........................................................................25
3.4.4.2 Pneumatic connection in the flameproof encl
osure.....................................................................26
3.4.4.3 Pneumatic connection versions
...................................................................................................27
3.4.5 Purge air switching.......................................................................................................................29
3.4.6 Restrictors....................................................................................................................................30
3.5 Mode of operation ........................................................................................................................31
3.5.1 Control loop
..................................................................................................................................31
3.5.2 Control algorithm..........................................................................................................................32
3.5.3 Block circuit diagram for signal-actin
g or dual-acting drives........................................................33
3.5.4 Mode of operation of the HART function .....................................................................................34
4 Mounting
.................................................................................................................................................. 35
4.1 Safety notes for installation..........................................................................................................35
4.2 Installing the l
inear actuator.........................................................................................................36
4.3 Installing the part-turn ac
tuator ....................................................................................................41
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