Wiring Profibus Pa - Siemens SITRANS FUS060 Operating Instructions Manual

5.3

Wiring PROFIBUS PA

Terminals 7 and 8 are reserved for the PROFIBUS PA connection. The PA interface is polarity
independent, so the wires can be connected arbitrarily.
• 7: PA wire 1. This device is polarity independent
• 8: PA wire 2. This device is polarity independent
To achieve the best EMC performance, the unshielded wires should be as short as possible, 2-3
cm. Shield coverage of 90% is ideal.
Protection from electromagnetic interference
It is recommended to use shielded twin core cables for connecting PROFIBUS PA to the
transmitter.
Connection topologies
PA supports LINE, DROP, STAR topology and a combination of the three.
Figure 5-6
SITRANS FUS060 with PROFIBUS PA
Operating Instructions, 09/2021, A5E02225054-AD
CAUTION
Electrical wiring
Connecting
5.3 Wiring PROFIBUS PA
37