Design and Functional Principle
9
3 6.1 2 1 12 7
1
10
--
+
10
5 6.2 4 8
1 Input: Supply air
2 Output: Actuating pressure Y1
3 Display
4 Output: Actuating pressure Y2 *)
5 Operating keys
6.1 Restrictor Y1
6.2 Restrictor Y2 *)
*) in double-acting actuators
7 Transmission ratio selector
(only possible with positioner open)
8 Adjusting wheel for friction clutch
9 Terminals standard controller
10 Terminals options modules
12 Safety catch
Figure 2-3 View of the explosion proof version of the positioner
2.3.1 Motherboard
The motherboard contains all the electronic elements such as the CPU,
memory, A/D converter. It also contains the display and the operating
keys.
In addition, the terminal strips for connecting the options modules are
also on the motherboard.
2.3.2 Electrical Connections
The terminals of the standard controller, the Iy- and alarm-option mod-
ule are arranged at the left-hand front edges and offset against each
other in staircase form.
A module cover protects the modules from being pulled out and pre-
vents incorrect installation.
SIPART PS2 Manual
18
A5E00074631--06