Burkert 8694, Operating Instructions Manual, Page: 19 / 196

19
System description
5.6. interfaces of the positioner
Input for position
set-point value
3)
4 – 20 mA
4)
0 – 20 mA
Binary input
24 V DC
Communications
interface
Positioner
Analog
position feedback
(optional)
Inputs Outputs
P
ower
Operation
3)
Or optional bus connection AS interface
4)
Default setting
Figure 6: Interfaces
The positioner Type 8694 is a 3-wire device, i.e. the power (24 V DC) is supplied separately from the set-
point value signal.
• Input for position set-point value (4 – 20 mA corresponds to 0 – 100 %
(depending on position of DIP switch 1)).
• Binary input
If a voltage > 10 V is applied, SAFE POSITION is activated, i.e. the valve is moved to the safety position
(factory setting, can be changed with communications software).
• Analog position feedback (optional)
The position of the valve can be transmitted via an analog 4 – 20 mA output to the PLC
(4 – 20 mA corresponds to 0 – 100 %).
English
Type 8694