Interfaces Of The Positioner - bürkert 8694 Bedienungsanleitung

Type 8694
Systemdescription
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
Or optional bus connection AS interface
3)
Default setting
4)
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 %).
Analog
position feedback
(optional)
Positioner
Operation
english
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