37
5 Connecting to the bus system
VEGAPULS 68 • Foundation Fieldbus
36538-EN-170405
5.5 Wiring plan, double chamber housing Ex d ia
5
0
1
0
1
+
678
Bus
3
1
2
( )
(-)
41
Fig. 32: Electronics compartment - Ex-d-ia double chamber housing
1 Internal connection to the terminal compartment
2 Contact pins for the display and adjustment module or interface adapter
3 Simulation switch ("1" = mode for simulation release)
4 Internal connection to the plug connector for external display and adjust-
ment unit (optional)
+
Bus
2
1
2
( )
(-)
1
Fig. 33: Connection compartment - Ex-d-ia double chamber housing
1 Voltage supply, signal output
2 Ground terminal for connection of the cable screen
34
1
2
Fig. 34: Top view of the plug connector
1 Pin 1
2 Pin 2
3 Pin 3
4 Pin 4
Contact pin Colour, connection ca-
ble in the sensor
Terminal, electronics
module
Pin 1 Brown 5
Electronics compartment
Terminal compartment
Plug M12 x 1 for external
display and adjustment
unit
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