Owner manual

3
Contents
1. OPERATING INSTRUCTIONS ........................................................................................................................................................7
1.1. Symbols ......................................................................................................................................................................................7
1.2. Definition of term “device” ................................................................................................................................................7
2. AUTHORIZED USE .............................................................................................................................................................................8
2.1. Restrictions ...............................................................................................................................................................................8
3. BASIC SAFETY INSTRUCTIONS .................................................................................................................................................9
4. GENERAL INFORMATION .............................................................................................................................................................11
4.1. Contact addresses .............................................................................................................................................................11
4.2. Warranty ...................................................................................................................................................................................11
4.3. Information on the Internet ............................................................................................................................................11
5. DESCRIPTION OF SYSTEM ........................................................................................................................................................12
5.1. General description ...........................................................................................................................................................12
5.1.1. Features .....................................................................................................................................................12
5.1.2. Combination with valve types and mounting versions ....................................................................13
5.1.3. Optionally external position feedback with inductive proximity switch .......................................13
5.1.4. Overview of the mounting options.......................................................................................................14
6. STRUCTURE ........................................................................................................................................................................................15
6.1. Representation .....................................................................................................................................................................15
7. FUNCTION ............................................................................................................................................................................................16
7.1. Function diagram ................................................................................................................................................................16
7.2. Function of the position control ..................................................................................................................................17
7.3. Schematic representation of the position control ............................................................................................18
7.4. Properties of the position controller software ....................................................................................................19
7.4.1. Functions I .................................................................................................................................................19
7.4.2. Functions II ................................................................................................................................................19
7.5. Interfaces of the positioner ..........................................................................................................................................21
Electropneumatic positioner Type 8791
english
Type 8791