Flowserve MX FOUNDATION Fieldbus Field Unit - Manual (Page 20)

MX/QX FOUNdaTION Fieldbus Field Unit FCd LMENIM2330-01 – 08/11
20
6. Connect the network cables to the MX/QX terminal block as shown in Figure 2.14.
Table 2.4 details a connection for the daisy chain topology. If the actuator is to be connected on a
spur (as a drop), use only terminals 15 and 16.
Table 2.4 – Loop Topology Connection
Terminal Block Number Function
4 FF1 (-)
5 FF1 (+)
14 FF1 (-)
13 FF1 (+)
3 Surge Protection
NOTE: Ground each segment of the cabling at only one point to prevent ground loops that can affect
system performance, see Section 2.4. Verify the actuator is properly grounded.
7. Connect the cable shields toeach other inside the unit. Do not connect then to the unit in any way.
The network shield should be grounded at only one place in the network. If it is desired to ground
the entire network shield at the actuator, then install a jumper cable from terminal 3 to earth
ground or ground lug.
Figure 2.14 – Connecting Network Cable to MX/QX Terminal Block