Instruction manual

DLP-16 Connecting the Alarm Contacts and the External Input

Introduction

Alarm connections alert the user when a selected alarm condition exists. Pressing the Alarm Cut-Off

(

ACO) switch on the front panel of the Total Access 850 PSU clears the alarm. This procedure details the

steps which must be performed to use the Total Access 850 alarm connections and the

ACO switch.

This procedure should be performed at installation on each Total Access 850 shelf that is wired out to

external office alarm equipment.

Prerequisite Procedures

Before beginning this procedure, the Total Access 850 should be mounted in its permanent location.

Tools and Materials Required

• Wire strippers

• Small Phillips screwdriver

• 22 or 24 AWG 2-conductor twisted pair cross-connect wire

• VT100 terminal or PC with VT100 terminal emulation software

To prevent electrical shock, do not install equipment in a wet location or during a

lightning storm.

Electronic modules can be damaged by static electrical discharge. Before handling

modules, put on an antistatic discharge wrist strap to prevent damage to electronic

components. Place modules in antistatic packing material when transporting or storing.

When working on modules, always place them on an approved antistatic mat that is

electrically grounded.