Type 8694

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Table of contents

1. General technical data

3

1.1.

Digital electropneumatic positioner, Type 8694...............................................................................................................................3

1.2.

Without fieldbus communication: 24 V DC......................................................................................................................................5

1.3.

With fieldbus communication: AS-Interface ....................................................................................................................................5

1.4.

With digital communication: IO-Link................................................................................................................................................6

1.5.

With digital communication: Bürkert system bus (büS)...................................................................................................................6

2. Approvals and conformities

7

2.1.

General notes...................................................................................................................................................................................7

2.2.

Conformity .......................................................................................................................................................................................7

2.3.

Standards.........................................................................................................................................................................................7

2.4.

Explosion protection ........................................................................................................................................................................7

2.5.

North America (USA/Canada) ..........................................................................................................................................................7

2.6.

Others ..............................................................................................................................................................................................7

China Compulsory Certification (CCC) ............................................................................................................................................7

3. Materials

8

3.1.

Material specifications .....................................................................................................................................................................8

4. Dimensions

8

4.1.

Mounting on ELEMENT control valve Type 23xx / 2103..................................................................................................................8

5. Device/Process connections

9

5.1.

Electrical connections......................................................................................................................................................................9

Without fieldbus communication 24 V DC.......................................................................................................................................9

Cable gland......................................................................................................................................................................................9

AS-Interface connection ................................................................................................................................................................10

IO-Link connection.........................................................................................................................................................................10

Bürkert system bus (büS connection)............................................................................................................................................10

6. Performance specifications

11

6.1.

Signal flow diagram........................................................................................................................................................................11

Position control loop ......................................................................................................................................................................11

Additional software options of the TopControl BASIC positioner Type 8694 (extract) ..................................................................11

6.2.

Interface diagram ...........................................................................................................................................................................12

Version without fieldbus communication .......................................................................................................................................12

Version with fieldbus communication ............................................................................................................................................12

7. Product installation

13

7.1.

Combination options with pneumatic process valves ...................................................................................................................13

8. Ordering information

14

8.1.

Bürkert eShop................................................................................................................................................................................14

8.2.

Bürkert product filter......................................................................................................................................................................14

8.3.

Ordering chart................................................................................................................................................................................14

8.4.

Ordering chart accessories............................................................................................................................................................15

Standard accessories ....................................................................................................................................................................15

Adapter kits....................................................................................................................................................................................15