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Nexus 21 A1557 Exploded View and Mechanical Data/Text Identification, User Controls & Indications

Models: A1557

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1.1.1Exploded View and Mechanical Data/Text Identification

Motherboard

Expansion Motherboard

Display board assembly mounted on removable door

Loop Cards	Loop Cards

Expansion Cards

Network Card A1535 8 way relay

A1536 8 way alarm

Power Supply Board

Space for Internal 12AH Battery Set

Printer

1.1.2User Controls & Indications

Document Ref: Nex8inst.doc/Rev0 09.07.00

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Nexus 21 A1557 technical specifications Exploded View and Mechanical Data/Text Identification, User Controls & Indications

Contents

Contents Exploded View and Mechanical Data/Text Identification User Controls & IndicationsDisplay Lithium Battery LBAR1Power Supply Illustration NC1Programmable Expansion Boards Ii A1536 8 Way Programmable Input/Output Alarm BoardLoop Card Expansion Motherboard A1535 8 Way Programmable Input/Output Relay BoardImportant Notes on Batteries Document Ref Nex8inst.doc/Rev0 Number Loops Access level 1278 Overview of Engineer’s Menu OptionsAccessing Engineer’s Menu Access level 8812Setting Time & Date IsolateDevice Status Configure LoopEdit Status Disabled/Enabled ADR VAL Type STS CMDStatus To Printer Extended Menu Loop ContentsZones Alarm Test Alert Trip LevelPanel Delay Fire Trip LevelProgramming the Number of Displays Repeaters Read MemoryClear Print Queue Print Cause and Effect Data Print Memory ContentsOptions Available at Access Level Checklist Commissioning IntroductionCommissioning Procedure An Overview of the Commissioning ProcedurePre-Commissioning Wiring Check Alarm CircuitsCommissioning Loops Cause & Effect Editing Cause & Effect TestingAuxiliary Circuits Final CommissioningTechnical Specifications Ii Other Relevant Documentation Iii Compatible Loop Devices and Panel Responses 1XX= LED = LED Is in fire Fault Data fault AV = 0 to Operation and is