Nexus 21 A1557 technical specifications Contents

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Nexus 1-8 Loop (A1557)

Analogue Addressable Control Panel

Installation and Commissioning Manual

Contents		Page
1.0	Introduction and Guided Tour	1
2.0	Cabinet Installation	7
3.0	Engineer’s Functions	9
4.0	Panel Check	10
5.0	Panel Configuration	10
6.0	Commissioning	20
Appendices
i.	Technical Specifications	24
ii.	Other Relevant Documentation	25
iii.	Compatible Loop Devices and Panel Responses	27

1.0Introduction

Thank you for purchasing this Nexus 1-8 loop analogue addressable control panel. This range of panels is designed to comply with to the requirements of BS5839 part 4 1988. The Nexus 1- 8 loop panel will provide the user with many years of reliable service.

IMPORTANT NOTE: Read the instructions carefully before commencing installation and commissioning.

1.1Guided Tour

Document Ref: Nex8inst.doc/Rev0 09.07.00

Page 1 of 30 Originator MC Checked by AC___Approved by JBJ__

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Contents

Contents User Controls & Indications Exploded View and Mechanical Data/Text IdentificationDisplay LBAR1 Lithium BatteryNC1 Power Supply IllustrationLoop Card Expansion Motherboard Ii A1536 8 Way Programmable Input/Output Alarm BoardProgrammable Expansion Boards A1535 8 Way Programmable Input/Output Relay BoardImportant Notes on Batteries Document Ref Nex8inst.doc/Rev0 Number Loops Overview of Engineer’s Menu Options Access level 1278Access level 8812 Accessing Engineer’s MenuIsolate Setting Time & DateEdit Configure LoopDevice Status ADR VAL Type STS CMD Status Disabled/EnabledStatus To Printer Zones Alarm Test Loop ContentsExtended Menu Alert Trip LevelFire Trip Level Panel DelayClear Print Queue Read MemoryProgramming the Number of Displays Repeaters Options Available at Access Level Print Memory ContentsPrint Cause and Effect Data Commissioning Introduction ChecklistPre-Commissioning Wiring Check An Overview of the Commissioning ProcedureCommissioning Procedure Alarm CircuitsCommissioning Loops Auxiliary Circuits Cause & Effect TestingCause & Effect Editing Final CommissioningTechnical Specifications Ii Other Relevant Documentation 1XX Iii Compatible Loop Devices and Panel Responses= LED = LED Is in fire Fault Data fault AV = 0 to Operation and is