
3
1 ABOUT THESE INSTRUCTIONS .......................................... 5
1.1 Symbols....................................................................... 5
1.2 Denitionofterms ....................................................... 5
2 INTENDED USE .................................................................... 6
3 BASIC SAFETY INSTRUCTIONS.......................................... 6
4 GENERAL INFORMATION .................................................... 7
4.1 Contactaddresses ...................................................... 7
4.2 Warranty ...................................................................... 7
4.3 Informationontheinternet .......................................... 7
5 DESCRIPTION OF SYSTEM ................................................. 8
5.1 Structure...................................................................... 8
5.2 Generaldescription ..................................................... 8
6 TECHNICAL DATA................................................................. 9
6.1 Conformity................................................................... 9
6.2 Standards .................................................................... 9
6.3 Operatingconditions................................................... 9
6.4 Mechanicaldata .......................................................... 9
6.5 Typelabel .................................................................... 9
6.6 Electricaldata............................................................ 10
6.7 Pneumaticdata ......................................................... 11
7 OPERATING ........................................................................ 11
7.1 Operatingstatus ......................................................... 11
7.2 Controlanddisplayelementsofthepositioner......... 12
8 ATTACHMENT AND ASSEMBLY ........................................... 17
8.1 Installationofdevicesforthehazardousarea........... 17
8.2 Attachmenttoacontinuousvalvewithlinear
actuatorsaccordingtoNAMUR ................................ 17
8.3 Attachmenttoacontinuousvalvewith
rotaryactuator........................................................... 21
8.4 Remoteoperationwithexternalpositionsensor....... 24
9 FLUID CONNECTION.......................................................... 25
9.1 Connectionofdevicesforthehazardousarea.......... 25
9.2 Safetyinstructions..................................................... 25
9.3 Safetyendpositions.................................................. 26
10 ELECTRICAL CONNECTION .............................................. 28
10.1 Connectionofdevicesforthehazardousarea.......... 28
10.2 Safetyinstructions..................................................... 28
10.3 Electricalconnectionwithouteldbus
communication.......................................................... 28
10.4 Electricalinstallation,IO-Link.................................... 33
10.5 Electricalinstallation,büS ......................................... 33
11 START-UP............................................................................ 34
11.1 Safetyinstructions..................................................... 34
11.2 Specifyingthestandardsettings............................... 34
11.3 SettingwithBürkertCommunicator.......................... 35
11.4 IO-Link....................................................................... 36
11.5 büS ............................................................................ 36
Positioner Type 8791 REV.2
english
Type 8791 REV.2