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0 when installing controllers, Section 03 - when installing controllers, Entraguard – Keri Systems EntraGuard Silver Quick Start User Manual

Page 6: Silver telephone entry control, Quick start guide

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EntraGuard

®

Silver Telephone Entry Control

Quick Start Guide

Page 6 of 27

P/N: 01960-001 Rev. D

3.0

When Installing Controllers

DO

since this is a telephone entry system at least one phone line will be necessary, it is important to plan ahead to meet
power and telephone requirements for your system (if using a modem, the host computer will need 1 phone line, plus
one for each master controller in each network or each EntraGuard unit)

mount controllers in environmentally suitable areas - the EntraGuard Silver unit is weather resistant, but care should
be taken to avoid areas of weather/temperature/humidity extremes

mount the controller at least 3 feet away from the controller's power supply to prevent EMI radiated from the power
supply from affecting the controller

use the enclosure as a mounting template to mark drilling holes for permanent mounting

note the locations of the knockouts in the enclosures and remove the appropriate knockout for the easiest cable
routing into the controller

route all controllers in a network in a single, continuous daisy-chain (with the EntraGuard Silver controller as the
master)

route cables in accessible areas for ease of maintenance

connect all controllers to a quality earth ground

1

add transient suppression across electric devices attached to a controller output

use an isolation relay (P/N IRP-1) if attaching to a parking gate, a turnstile, or any application using a large electric
motor

verify the controller's supply voltage is 12 VDC – long power line runs cause a drop in voltage at the end of the run

verify proper operation of the host computer's COM port or Ethernet/LAN WAN connection.

DO NOT

make modem phone line connections through PBX telephone switching systems - most modems are not compatible
with PBX systems leading to disconnection problems with the modem

locate the EntraGuard Silver controller near EMI sources - EMI sources can affect the performance of the controller

use switching power supplies - they are EMI sources

route network cables beside power cables - transients on the power cables may be picked-up by network and reader
cables

stretch or over-tension cables

route over sharp objects

let the wires get tangled

route the EntraGuard Silver controller as a slave to a PXL-250 master

route all controllers in a network in spur, hub, or loop configurations

connect earth ground

1

to the network cable shield - the EntraGuard Silver automatically connects earth ground to the

shield at one point on the network to prevent ground loops

use gender changer plugs when making RS-232 serial communication connections (unless you know it is a "straight-
through" plug) - gender changers may have internal wiring changes that can disrupt communications

1. Ground wire is green, with or without yellow tracer.