Installation guide

MOUNTING THE PANEL AND WIRING THE SYSTEM

Locate the panel in an area that has convenient access and then fasten the panel securely to a

wall at about chest height. Six mounting holes are provided. The keyholes at the top allow initial

positioning and levelling. The panel can then be secured at the remaining holes using suitable

screws and anchors.

If a communicator module is required, it may be installed to the right of the printed circuit board

or underneath it by using double-sided foam tape. If it is to be located underneath the main

board, pre-wire the terminal screws of this module with 6- to 10-inch wires and preset any

switches or install any EPROMs because the module will be hidden beneath the APLEX printed

circuit board. To remove the APLEX printed circuit board from the panel, proceed as follows:

First, unplug the keyboard connector. Avoid pulling it by the ribbon cable; to loosen it correct-

ly, lever the blue connector plug to the left with a small, flat-blade screwdriver and then pull it

free from the header pins. The printed circuit board is secured by six nylon mounts. Squeeze the

out-flanged arm of each nylon mount with a pair of needle-nose pliers and gently pull up on the

board. To remount the printed circuit board, gently press each clearance hole onto its nylon

mount. To determine which outputs could be connected to the module, refer to the terminal-strip

designation chart on page 10 and the relevant operational characteristics on pages 11 and 12.

LOCAL MULTIPLEX TELEMETRY CABLE (LMTC) - LEM LINE

The APLEX Model 3100E8 requires the addition of a Local Multiplex Telemetry Cable

(LMTC), more commonly known as a LEM line, and, to obtain the maximum of 100 zones, the

instal-lation of either up to 50 D-LEMs (old designation is A-LEM) or COMBO LEMs or,

alternative-ly, two D-LEMs or COMBO LEMs and 24 Q-LEMs. The LMTC requires only three

conductors for proper operation. C-LEMs, COMBO LEMs, and Model 3220/3230/3240 remote

keypads require an extra source of DC power in addition to the LEM-line connection. Normally,

two "telephone-style" quad wires or a 6-conductor, mixed-gauge cable should be used. One quad

wire is used for LEM signals, while the second quad wire or the extra conductors in the

multi-cable can be used to supply auxiliary DC power from the panel. This auxiliary power

source must be used to operate the C-LEMs and/or COMBO LEMs, and may be used to supply

DC power to operate PIRs, etc. The extra conductors in the multi-cable must not be used for AC

power or for DC power to disruptive loads like mechanical bells or strobe lights. A network of

up to 2 km of unshielded cable, consisting of the trunk cable connecting the panel to the furthest

LEM and

including the length of the single longest zone loop, can be supported. It is good practice to

double up the LEM ground (-ve) wire. Connect the spare fourth wire in parallel with the wire

selected as LEM negative to reduce the resistance value. THIS PRACTICE IS MANDATORY

IN LARGE SYSTEMS TO ALLOW PROPER INITIALIZATION OF THE ZONES!! If

shielded cable is used, only about half the length of LEM-line cable can be installed because of

excess cable capacitance.