5
2.2 Back
Panel
The back panel consists of two connectors. The first one is a 4-
way screw terminal and the second is a 12-way screw terminal.
Refer to the label on top of the unit for diagram.
The connection for the 4-way screw terminals are (from the left
to right):
1. PT 100 connection
2. PT 100 connection
3. No connection
4. No connection
The connections for the 12-way screw terminals are (from left
to right),
5. Low Set Relay deactivated position
6. Low Set Relay center pole
7. Low Set Relay activated position
8. High Set Relay deactivated position
9. High Set Relay center pole
10. High Set Relay activated position
11. 4-20 mA - ve connection (for transmitter models only)
12. 4-20 mA + ve connection (for transmitter models only)
13. Protective earth
14. Protective earth
15. Neutral
16. Live
