2-24
AFP-400 Installation
PN
50253
:
A2 03/12/96
Do not allow the shield drain wire to enter the system cabinet. Connect the
drain wire to the outside of the cabinet via a cable connector.
No Conduit Shield
Termination
Cabinet
Loop +
Loop
Shield Drain Wire
The shield drain wire must be connected to the negative () side of the loop.
Do not let the shield drain wire or the shield foil to touch the system cabinet.
Cabinet
Loop +
Loop
Field Wiring the Modules
AFP-400 modules feature removable terminal blocks that ease installation
and servicing of the control panel. The following three diagrams show
conduit wiring methods.
Overview
Full Conduit Shield
Termination
Shield Drain Wire: The shield must
not be connected to earth ground
at any point.
Do not allow the shield drain wire to enter the system cabinet or the con-
duit. Connect the drain wire to the termination point of the conduit run
(such as a single-gang box shown below).
Cabinet
Scrape paint away from the
cabinet to make good
electrical connections.
For Style 6 or Style 7 field
wiring of the Communica-
tions Loop, connect each
end of the shield to the
negative side of the
respective channel.
The length of a conduit
cannot exceed 20 feet.
If using a metal box, you
must use a metal conduit.
Partial Conduit Shield
Termination
Shield Drain Wire
