IF303 - Operation and Maintenance Instruction Manual
1.4
Spur
Terminator
Spur
Spur
Shield
Junction
Box
+
+
+
Analog
Ground
+
-
+
-
Figure 1.4 - Bus Topology
Analog
Ground
+
-
+
-
Coupler
+
+
+
+
Terminator
Enabled
Junction
Box
Terminator
Figure 1.5 - Tree Topology
Intrinsic Safety Barrier
When the Fieldbus is in an area requiring intrinsic safety, a barrier must be inserted on the trunk
between the power supply and the DP/PA coupler, when it is Non-Ex type.
Use of
DF47
is recommended.