Burkert 8175 Manuel Utilisateur page 88

8175 wall mounted version, 18-32 VDC; WIRING
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 3.15) provides a sourcing configuration and Position B (Fig 3.16) a sinking configu-
ration.
PLC/control
250 mA
valve or
+
positioner
-
4-20 mA
SW 2,
I
Position A
1 2 3
+ -
Fig. 3.15 Pin assignment, Position A
8175 wall mounted version, relay connection
The electrical wiring of this model is possible via the use of 2 of the cable glands. Remove
the cover via the screws on the front display and pull the cables through the cable gland
and wire according to pin assignment diagram below (Fig. 3.17).
Locked
24VDC
OR
115/230 VAC
Fig. 3.17 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 unauthoridsed 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. 3.16 Pin assignment, Position B
250 mA
4-20 mA
(*)
1 2 3 4
+ -
19
+
-
(*)
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.