Instrument Components - Siemens SIPART PS2 6DR5020 Series Manual

Design and Functional Principle
2.2

Instrument Components

13
12
11
1 Input: Supply air
2 Output: Actuating pressure Y1
3 Display
4 Output: Actuating pressure Y2
5 Operating keys
6 Restrictor
6.1 Restrictor Y1
*)
6.2 Restrictor Y2
*)
in double- -acting actuators
Figure 2-1 View of the positioner in normal version (cover open)
16
puts respond even when the power supply fails or the electronics are
defective.
The actuator can also be blocked or driven to its final positions depen-
ding on the configuration for example by an external event via a digital
input (DI2) on the alarm module.
If you require electrically independent limit value messages from the
standard controller, you will have to use the SIA module with the slot
initiators instead of the alarm module.
Communication with the controller is possible via the optional HART
interface.
14
90°
2 W 3/4 W
DI1
33°
10 9 8
7 Silencer
8 Transmission ratio selector
9 Adjusting wheel slip clutch
*)
10 Terminals options modules
12 Dummy plug
13 Screw- -type cable gland
14 Terminal plate on cover
15 Purging air switch
3
15
2
1
4
6.1 6.2
7 6 5
SIPART PS2 Manual
A5E00074631-01