Type 8691

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Table of contents

1. General technical data

3

1.1.

Control head Type 8691...................................................................................................................................................................3

1.2.

Without fieldbus communication: 24 V DC......................................................................................................................................4

1.3.

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

1.4.

With digital communication: IO-Link................................................................................................................................................5

1.5.

With digital communication: Bürkert system bus (büS)...................................................................................................................5

1.6.

Functional overview Type 8691........................................................................................................................................................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 process valve ELEMENT Type 21xx ...........................................................................................................................8

5. Device/Process connections

9

5.1.

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

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

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

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

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

6. Product installation

11

6.1.

Combination options with pneumatic process valves ...................................................................................................................11

7. Ordering information

12

7.1.

Bürkert eShop................................................................................................................................................................................12

7.2.

Bürkert product filter......................................................................................................................................................................12

7.3.

Ordering chart................................................................................................................................................................................13

7.4.

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

Standard accessories ....................................................................................................................................................................14

Adapter kits....................................................................................................................................................................................14