Burkert 8175 Manuel Utilisateur page 84

3.4.2 8175 compact version
Wiring of the 18-32 VDC version, with cable gland
Remove the cover via the screws on the front display and pull the cable through the cable
gland and wire according to one of the pin assignment diagrams below.
The electronics within the 8175 allows a sourcing or sinking PLC to be connected. Position
A (Fig 3.5) provides a sourcing configuration and Position B (Fig 3.6) a sinking one.
PLC/control
250 mA
valve or
+
positioner
-
4-20 mA
SW 2,
I
Position A
1 2 3
+ -
Fig. 3.5 Pin assignment, Position A
Relay connection of the 18-32 VDC version, with cable gland
The electrical wiring of this model is possible via the use of 2 cable glands. Remove the
cover via the screws on the front display and pull the cables through the cable glands and
wire according to pin assignment diagram below (Fig. 3.7).
Locked
24VDC
OR
115/230 VAC
Fig. 3.7 Pin assignment for relays
The device can be easily connected to a PLC independently of the respective version.
-
The 'Enter' key can be locked by placing the SW 1 swich into the left position to avoid
-
accidental or unauthorized access.
8175
INSTALLATION
+
-
(*)
18-32 VDC
SW 2,
Position B
4
SW1
ENTER
Locked Unlocked
SW 1
ENTER
Unlocked
REL1
3A
3A
m
REL2
PLC/control
250 mA
+
valve or
positioner
-
4-20 mA
I
1 2 3 4
+ -
Fig. 3.6 Pin assignment, Position B
250 mA
4-20 mA
(*)
1 2 3 4
+ -
15
+
-
(*)
18-32 VDC
+
-
18-32 VDC
(*) If direct earthing is
impossible, connect a
100 nF/50 V-condensa-
tor between the negative
terminal of the power
supply and the earth.