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The information contained herein is correct at the time of issue but may be subject to change without prior notice.

Table of contents

1. Safety.................................................................................................... 6

1.1 Important information....................................................................... 6

1.2 Warning signs .................................................................................. 6

1.3 Safety precautions........................................................................... 6

2. General information................................................................................7

2.1 Digital in general .............................................................................. 7

3. Technical specifications...................................................................... 8

3.1 ThinkTop

, PLC 8-30 VDC interface ............................................... 8

4. Installation.......................................................................................... 12

4.1 Installation on air actuators ............................................................ 12

4.2 Installation on Series 700 valves .................................................... 15

4.3 Air connections.............................................................................. 16

4.4 Electrical connection, internal........................................................ 17

4.5 Example of connecting power supplies......................................... 17

5. Setup diagram.................................................................................... 18

5.1 ThinkTop

setup utilising IR keypad .............................................. 18

5.2 ThinkTop

setup utilising local ‘I’ and ‘II’ keys ............................... 20

6. Fault finding....................................................................................... 22

6.1 Fault finding and LEDs .................................................................. 22

7. Maintenance....................................................................................... 24

7.1 Dismantling of ThinkTop

.............................................................. 24

7.2 Assembly of ThinkTop

................................................................. 26

7.3 Dismantling and assembly of Series 700 Valves ............................ 28

8. Parts list.............................................................................................. 30

8.1 ThinkTop

Digital 8-30 VDC PNP/NPN ......................................... 30

8.2 ThinkTop

Series 700 valves......................................................... 32

Alfa Laval ThinkTop Digital 8 User Manual

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