Endress+Hauser PROline promag 53 II3G Mise En Service page 34


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Bus termination
The start and end of each fieldbus segment are always to be terminated with a bus ter-
minator.
• In the case of a branched bus segment the measuring device furthest from the seg-
ment connector represents the end of the bus.
• If the fieldbus is extended with a repeater then the extension must also be terminated
at both ends.
Wiring example
The FOUNDATION Fieldbus H1 can be made for use in areas with an explosion risk. For
non-intrinsically safe wiring in Zone 2, the bus power supply is carried out as in Fig. 4.
It is recommended that the cable shielding be grounded at both ends (refer to Fig. 5,
Page 13).
Fig. 4: Typical embodiment of a fieldbus power supply of type MTL 5995
1 = fieldbus power supply, model MTL 5995
2 = DCS with integrated FOUNDATION Fieldbus H1 interface card
3 = Promag 53 bus devices for hazardous area
4 = terminator (T) = bus termination
PROline Promag 53 FOUNDATION Fieldbus
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