Honeywell IFS-2600 AZF Description, AZF Supervisory Current, Overload Protection

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IFS-2600Installation & Programming Manual

AZF DESCRIPTION

The AZF's on the IFS-2600 are monitored and scanned by custom thick film hybrids. These hybrid IC's significantly reduce the possibility of false alarms and improve product efficiency and reliability.

The total Alarm Zone loop resistance is the sum of the end of line resistor (EOLR 4K7) plus all the parallel connected detector loads.

AZF SUPERVISORY CURRENT

The supervisory current flows through the external terminal AZF+, through the field cable and to the end of line resistor (EOLR), returning to the panel at AZF- terminal. Parallel connected, across the 2-wire pair field cable, are a number of the previously listed detectors. During the quiescent state there is essentially an open circuit across the + and - terminals of the detector base. The maximum number of detectors that can be installed on each AZF is dependant on the type of detector and is listed in the IFS-2600 ActivFire® listing.

In an alarm state, a 560-ohm resistor is connected across the detector base causing additional loop current to flow. This is sensed by the AZF to produce an alarm output. Removal of the E.O.L. resistor (in a non alarm state) or the interruption of the supervisory current will produce a fault signal in the AZF.

As described above, the level of current is used to define the status of the alarm zone: -

I = 3.5 mA and below

FAULT

I = 4.0 - 5.0mA at 24V

QUIESCENT

I = 16 mA to 40 mA (current limited)

ALARM

The zone current is used by the hybrid IC to determine the condition of the zone as above. This information is then transferred to the microprocessor for processing.

OVERLOAD PROTECTION

Panel Supply

Fuse

F1

M205

5A

 

Battery Charger

Fuse

F2

M205

3A

 

Battery Protection

Fuse

F3

Polyfuse 3A

External Supply

Fuse

F4

M205

7A

 

Door Holder

Fuse

F5

M205

3A

 

Aux Power Output

Fuse

F6

M205

1A

Slow Blow

Bell

Fuse

F7

M205

1A

 

Warning System

Fuse

F8

M205

1A

 

ACF

Fuse

F9

M205

1A

 

AZF Circuits

Current Limited

40mA

 

 

ZONE OVERLOAD SELF RESET

If a zone is overloaded by an accidental short to earth on an AZF circuit, the zone will automatically shut down and produce a fault. Once this happens the panel will automatically recheck the zone every 60 seconds and once the overload is removed, restore power and the fault will clear.

P/N 10069 ECN08-0066

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Contents IFS-2600 Page Installation Precautions Documentation Feedback Table of Contents Instructions to Operators Placing Into OperationProgramming Appendix a Appendix BAppendix C Appendix DAppendix F Appendix GAppendix H AppendixCompatible Detectors Overview Specification ApprovalsEnvironmental Limits VDCAdditional relay outputs Power Supply Ratings and Settings Internal 24 VDC nom 3.0A Main Power SupplyInternal 27.3V DC 1.5A Battery Charger Internal 5VDC 2A Power SupplyBattery Type and Capacities External 27VDC Power SupplyTechnical Description GeneralTransient Suppression Current ConsumptionZone Overload Self Reset AZF DescriptionAZF Supervisory Current Overload ProtectionPrinter Output Cable ConnectionProgramming by Computer DB9 Female DB25 Male DB9 MaleAlignment and Adjustment PCB2006 Power Supply BoardNON Adjustable Test Points PCB2005 Termination BoardAlarm Threshold Comparator TP7 Fault Threshold Comparator TP6Configuration Jumpers Placing Into Operation Initial ChecklistEquipment AS Fitted Power UP Checklist Functional TestingFault Correction Date Fault RecordTests Satisfactorily Completed Indicators Instructions to OperatorsSuggested Alarm Procedure ResetOperator Instructions Acknowledge ACKBattery Test Batt Test Auto Test ModeBell Isolate EXT Bell Warn SYS IsolateACF Reset Walk Test ModeACF Isolate Alarm Test ENT Zone FunctionsFault Test Enter Reset Enter Isolate EnterGlobal Options ProgrammingZone Options Output Relay Options Previous → Program ModeSelect → Main Menu RelaysGlobal PrintExit Programming Mode Zone ProgrammingSelect Zone # Zone SelectedRelay Programming Mode Zone Output ConfigurationSelect Relay # Relay SelectedGlobal Programming Relay TypeRelay Mapping Relay #ALL Type GeneralAVF ACF OutputRelay Global Relay Unity MAP Print Programming Data Time Date & TimeDescription of Alarm Zone Types Appendix aLatching Type NON Latching TypeTime Delay AZF Zone Output Configurations Appendix BAlarm Verification Facility AVF AVF TimeoutAppendix C Global Programmable OptionsAppendix D Ancillary Trip ACFAncillary Trip ACF NON-LATCHING ND Latching ND NON-LATCHING NE LatchingneFault Mapping Appendix ERelay Output Mapping MappingFAULT/ISOLATE Mapping Isolate MappingAppendix F Glossary of TermsAppendix G Summary of Terminations and CautionsDoor Holder AC Input BatteryOutput Relays Appendix H IFS-2600 Programmed OptionsZone Type Programming 48IFS-2600Installation & Programming Manual Zone Output Programming Indicate IBG Ibga Bell General ACF BR1 BR2 BR1&BR2 Relay Output Mapping Mapping RLY ISO ACF BR1 BR2 FLT Mains GEN Bell Technical Drawings AppendixMain Keypad and Display Expansion Display Block Connection Diagram 12V BatterySystem Sensor Conventional Detector Connection Diagram Hochiki Conventional Detector Connection Diagram DET aDET B DET C RIP DET a DET B DET CAncillary Connection Diagram Strobe UsedTermination ASE Connection DiagramASE Bracket Auto Changeover Dual Sounder Connection Diagram Changeover from Alert to EvacAuto Change Over Dual Sounder Connection Diagram Manual ChangeoverMimic Connection Diagram ZonesFitted with IFS2600 Mimic Driver MIM/EXT/26FAN Termination Board AUX Power Single Fan Connection DiagramFront Panel Control Dual Fan Connection Diagram FANExhaust Fan Connection Diagram Stops the FAN From FIPSupply Fan Connection Diagram FAN Termination BoardSmoke Spill Fan Connection Diagram From FIP Front Panel Control10W Evac Connection Diagram Sound10W Evac Slave Connection Diagram From Slave30W Evac Connection Diagram AC230W Evac Slave Connection Diagram Acinput50W Evac 50W Evac Connection DiagramPCB 50W Evac Slave Connection Diagram FAN 50W EvacPage Page Page New South Wales Queensland Victoria Head Office

IFS-2600 specifications

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