Installation Instructions

Installation
Wireless Field Interface Part No.: 4417781
4 - 6 Installation Manual
4.5 Install the earth cable
For convenience in connecting or disconnecting internal ground when
all the boards in place, a long stud bolt is provided.
Connect Power Earth cable from PSX, Power Earth Cable from BPM
and the Power Earth cable from SMV, to the long ground bolt by using
serrated washers.
FIGURE 4-5 long Stud bolt for internal earth
One external point is available to connect to the field earth point
FIGURE 4-6 The grounding connections for the WFI
WARNING! Use of both internal and external protected earthing
is required for maintaining explosion safety unless
defined otherwise by national and/or local regu
-
lations.