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Tyco MX4428 Technical Manual

Tyco MX4428 Technical Manual

Mxp engineering / technical manual
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MXP ENGINEERING / TECHNICAL MANUAL
AUSTRALIAN STANDARD AS4428.1
- SSL Listing Number ....................................................................................... afp1446
NEW ZEALAND STANDARD NZS4512-1997 (INCL AMDT 1 & 2)
- FPA (NZ) Listing number ................................................................................. VF/117
AS/NZS 3548 1995 CLASS A
Information contained in this document is subject to copyright, and shall not be reproduced in any
form whatsoever, without the written consent of Tyco Services Fire & Safety.
Information contained in this document is believed to be accurate and reliable, however Tyco
Services Fire & Safety reserves the right to change the content without prior notice.
MX4428
MX4428 PRODUCT MANUAL
VOLUME 11
Document Number: LT0273
Issue 1.5; 24 March 2006
- APPROVALS -
The 4100MXP is a product of
Tyco Safety Products
211 Maces Road
Christchurch 8030
NEW ZEALAND
Phone +64-3-389 5096
Fax +64-3-389 5938
COPYRIGHT (C) 2003,2004

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Summary of Contents for Tyco MX4428

  • Page 1 Tyco Services Fire & Safety. Information contained in this document is believed to be accurate and reliable, however Tyco Services Fire & Safety reserves the right to change the content without prior notice.

  • Page 2: Non-Disclosure Agreement

    Document: LT0273 NON-DISCLOSURE AGREEMENT Tyco (THE COMPANY) and the User of this/these document(s) desire to share proprietary technical information concerning electronic systems. For this reason the company is disclosing to the User information in the form of this/these document(s). In as...

  • Page 3: Table Of Contents

    Document: LT0273 MX4428 MXP Engineering / Technical Manual TABLE OF CONTENTS NON-DISCLOSURE AGREEMENT....................... II END USER LIABILITY DISCLAIMER ....................II AMENDMENT LOG ..........................II TRADEMARKS ............................. II CHAPTER 1 INTRODUCTION ................1-1 ABOUT THIS MANUAL......................1-2 ASSOCIATED DOCUMENTATION..................1-2 1.2.1 PRODUCT RELATED ....................1-2 1.2.2 STANDARD RELATED ....................
  • Page 4 MX4428 MXP Engineering /Technical Manual Document: LT0273 3.11 MUB UNIVERSAL BASE ....................3-25 3.11.1 GENERAL........................3-25 3.11.2 MUB AND 5B WIRING ....................3-25 3.11.3 REMOTE INDICATOR WIRING ................... 3-25 3.12 5BI ISOLATOR BASE ......................3-26 3.12.1 GENERAL........................3-26 3.12.2 SPECIFICATIONS......................3-26 3.12.3 WIRING ........................
  • Page 5 Document: LT0273 MX4428 MXP Engineering / Technical Manual 3.25.2 SAD ..........................3-51 3.25.3 AVF/SAD ........................3-51 3.25.4 FLOWSWITCH ......................3-51 CHAPTER 4 ANALOGUE LOOP DESIGN CONSIDERATIONS ......4-1 ANALOGUE LOOP CONFIGURATION SELECTION ............4-2 4.1.1 LINES & LOOPS ......................4-2 4.1.2 LOOP FAULT TOLERANCE ..................
  • Page 6 MX4428 MXP Engineering /Technical Manual Document: LT0273 8.1.9 MXP EVENT LOG ......................8-9 FLASH PROGRAMMING ....................8-10 8.2.1 FILES REQUIRED......................8-10 8.2.2 PROCEDURE....................... 8-10 CHAPTER 9 DEVICE PROCESSING..............9-1 EXPONENTIAL FILTER ......................9-2 STEP LIMITING FILTER......................9-2 HEAT PROCESSING......................9-4 CONVERSION OF DETECTOR READING TO °C ............9-4 9.3.1 PHOTO PROCESSING......................

  • Page 7: Chapter 1 Introduction

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Introduction CHAPTER 1 INTRODUCTION Issue 1.5 24 March 2006 Page 1-1...

  • Page 8: About This Manual

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Introduction ABOUT THIS MANUAL This manual (MX4428 Product Manual Volume 11) is intended to provide all information and procedures required to incorporate one or more MXPs within an MX4428 system. It predominantly covers the function and engineering associated with the MXP itself, its impact on the MX4428 Responder Loop and the analogue loop/line(s) to which the compatible devices are connected.

  • Page 9: Standard Related

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Introduction Volume 9, F4000 MPR Technical & Engineering Manuals, Volume 9-1 provides technical details on the MPR and Addressable devices, and Volume 9-2 provides Engineering Design information for correctly engineering the MPR loop (LT0139/LT0140). Volume 10, MX4428 AS4428.1 LCD Operator’s Manual, provides a guide to the operation and maintenance of MX4428 AS4428.1 LCD FIP panels with Version 3.10...

  • Page 10: Terminology

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Introduction TERMINOLOGY Analogue Addressable Responder. Alternating Current. Ancillary Control Zone. Advanced Detector Responder. Analogue Loop The wiring that allows an MXP to communicate with and supply power to the addressable devices it is to monitor. Advanced Relay (and Detector) Responder, which is an ADR fitted with an RRM.

  • Page 11: Chapter 2 Responder Loop Design Considerations

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Responder Loop Design Considerations CHAPTER 2 RESPONDER LOOP DESIGN CONSIDERATIONS Issue 1.5 24 March 2006 Page 2-1...

  • Page 12: Mxp Application Considerations

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Responder Loop Design Considerations MXP APPLICATION CONSIDERATIONS The inclusion of one or more MXPs in an MX4428 system requires consideration of ..The definition of zones throughout the area to be protected. (ii) Assessment of the detectors and other addressable device types and positions required to monitor each zone and interface to external equipment.

  • Page 13: Logical" Responders

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Responder Loop Design Considerations "LOGICAL" RESPONDERS 2.2.1 THEORY The MX4428 Master Panel can transfer data to and from up to 127 uniquely addressed Responders distributed around the MX4428 Responder Loop. Its database is structured to support the 4 circuit inputs and 4 relay outputs associated with the most common responder type, the ADR.
  • Page 14 MX4428 MXP Engineering / Technical Manual Document: LT0273 Responder Loop Design Considerations Number of Logical Number of Circuits (Relays) Number of Points per circuit Total Quantity of Points Responders available (relay) in Last Circuit (NLR) (NC = 4 * NLR) PC = 200/NC Table 2-1 Point Allocation For Various Numbers of Logical Responders Page 2-4...

  • Page 15: Logical Responders

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Responder Loop Design Considerations F4000 LOOP ANALOG LOOP MAPPED DEVICE 1-16 C1/1 R1/1 C1/2 R1/2 DEVICE 17-32 LOGICAL RESPONDER DEVICE 33-48 C1/3 R1/3 C1/4 R1/4 DEVICE 49-64 DEVICE 65-80 C2/1 R2/1 F4000 MASTER TOTAL OF DEVICE 81-96...

  • Page 16: Implications To System Design

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Responder Loop Design Considerations So far only input devices have been considered. To continue our example for output devices, if the MX4428 Master generated an output command, via output logic, to turn on R1/1, then the MXP would activate all output devices associated with that relay, that is, in this case, all 3.

  • Page 17: Chapter 3 Device Information And Programming

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming CHAPTER 3 DEVICE INFORMATION AND PROGRAMMING Issue 1.5 24 March 2006 Page 3-1...

  • Page 18: Device Types

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming DEVICE TYPES The MXP can communicate with a mix of up to 200 addressable devices, within limits defined by loop size. 3.1.1 MX DEVICES MX devices fall into three basic types: Sensors Detectors (814PH, 814CH, 814I, 814H, VLC800) Ancillaries...
  • Page 19 Sounder Base functional bases. The output functionality is programmable and not necessarily related to the input status. The devices which have a remote LED output may drive a Tyco E500Mk2 remote LED. The functionality of this LED is programmable and it does not necessarily follow the local LED.
  • Page 20 MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 814CH Analogue CO (Carbon monoxide) Detector + Heat Detector This unit uses a special sensor to detect carbon monoxide, and in addition incorporates a temperature sensor. The heat function may be programmed in the same way as for the 814H detector.
  • Page 21 Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Sounder Notification Module SNM800 This unit has a relay rated at 2A 30Vdc for switching external loads. Supervision of load wiring and the load supply is provided. The relay position is supervised and a “relay checkback”...
  • Page 22 MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming All loop devices are rated at a loop voltage of 20Vdc - 40Vdc and a signalling voltage of 2V p-p – 6V p-p. Alarm Currents specified do not include remote indicators. Add 7mA for each remote indicator.

  • Page 23: Device Handling Capability

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming DEVICE HANDLING CAPABILITY 3.2.1 OVERVIEW The parameters which determine the maximum number of each device type that can be put on a loop are as follows. The column “MAX NO. DEVICES” assumes that all devices are of the same type.

  • Page 24: Dc Load

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming It is recommended that the PC program F4000CAL is used for conducting the loop loading calculations. However note that it does not include the isolator base loading, this must be done manually.

  • Page 25: Isolator Base Loading

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.2.4 ISOLATOR BASE LOADING If isolator bases are being used, calculate the sum of the “IB Units” from Table 3-2 for each section of cable between isolator bases (or between the last isolator base and the end of a cable spur).

  • Page 26: Output Control

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming OUTPUT CONTROL The following “outputs” are available on the Analogue loop – • Output modules – RIM800, SNM800, and LPS800 • Functional Base outputs of detectors (controlling 814SB, MkII Sounder Base or 814RB) •...

  • Page 27: Programming

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.3.1 PROGRAMMING The programming of the output functions is done by setting the “mode” value for the RIM800, SNM800, and 814I, and by one of the 7 device parameters for the 814H, 814PH, and 814CH.

  • Page 28: Detector Parameter Settings Summary

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming DETECTOR PARAMETER SETTINGS SUMMARY The following table gives a summary of the MX4428 default and alternate settings, and approved range, for each detector type. Detector Default Alternate Range Comments 814PH 8% - 12%...

  • Page 29: Device Installation

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Conversion from detector units to displayed values is by imagining a graph with a series of joined straight lines from (0,0) and passing through each of the above defined points (e.g. 814PH 37 det units = 8%) and extrapolated in a continuing straight line past the highest point if necessary.

  • Page 30: Mx4428 Programming

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming MX4428 PROGRAMMING In the following sections information is given about the programming of each device in the MX4428. An explanation of the mode and the various parameters is given for each device type, along with the global parameters that affect that device type.

  • Page 31: 814H Heat Detector

    Supply Voltage: 20Vdc - 40Vdc Supply Current: 250uA (typical quiescent) Alarm Current: 3.0mA (typical) Remote LED Current: 7mA (Tyco E500Mk2) Dimensions: 110mm (diameter) x 55mm (including MUB base) Weight Base MUB, 5B, 5BI, 814RB, 814SB, or MkII Sounder Base 3.7.3 MX4428 PROGRAMMING OPTIONS - 814H The programming values for the 814H are described in the following tables.
  • Page 32 MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming Parameter Description Default Mode Value Heat Type A/C – rate of rise enabled. B/D – rate of rise disabled Heat fixed temperature pre-alarm threshold °C 56 (°C) Heat fixed temperature alarm threshold °C 63 (°C) New Zealand Australian Types A / B...

  • Page 33: 814I Ionisation Smoke Detector

    Supply Voltage 20Vdc - 40Vdc Supply Current 330uA (typical quiescent) Alarm Current 3.0mA (typical) Remote LED Current 7mA (Tyco E500Mk2) Dimensions 110mm (diameter) x 55mm (including MUB base) Weight Base MUB, 5B, 5BI, 814RB, 814SB, or MkII Sounder Base 3.8.3 MX4428 PROGRAMMING OPTIONS - 814I The programmable values for the 814I are explained in the following table.
  • Page 34 MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming Parameter Description Default Mode Value Functional Base Control Remote LED Control Circuit Alarm Circuit Alarm Circuit Alarm Relay Circuit Alarm Point Alarm Relay Circuit Alarm Relay Relay Relay Point Alarm Point Alarm Circuit Alarm...

  • Page 35: 814Ph Photoelectric Smoke & Heat Detector & 814P Photoelectric Smoke Only Detector

    Supply Voltage 20Vdc - 40Vdc Supply Current 275uA (typical quiescent) Alarm Current 3.0mA (typical) Remote LED Current 7mA (Tyco E500Mk2) Dimensions 110mm (diameter) x 55mm (including MUB base) Weight Base MUB, 5B, 5BI, 814RB, 814SB, or MkII Sounder Base 3.9.3...
  • Page 36 MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming The mode selects the detection mode for the detector - smoke only, enhanced smoke, heat enabled or disabled, heat rate of rise enabled or disabled, smoke detection algorithm is SmartSense or FastLogic, etc.
  • Page 37 Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Parameter Description Default Mode Value Smoke Enhance smoke Heat Type Algorithm sensitivity with A – rate of rise heat Rate of enabled Rise. B – rate of rise disabled SmartSense SmartSense...
  • Page 38 MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming The following global parameters which may be set at the MX4428 affect all applicable points on all MXPs. MX4428 Reference Description Default 8XXPH UPPER Photo Upper Tracking Limit (i.e. the 56 (MXP Default) TRACKING LIMIT maximum assumed value for clean...

  • Page 39: 814Ch Carbon Monoxide + Heat Detector

    Supply Voltage 20Vdc - 40Vdc Supply Current 275uA (typical quiescent) Alarm Current 3.0mA (typical) Remote LED Current 7mA (typical Tyco E500Mk2) Dimensions 110mm (diameter) x 55mm (including MUB base) Weight Base MUB, 5B, 5BI, 814RB, 814SB, or MkII Sounder Base 3.10.3 MX4428 PROGRAMMING OPTIONS - 814CH The programmable values for the 814CH are described in the following tables.
  • Page 40 MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming The remaining parameters should not need changing. Parameter Description Default Mode Value Enhance CO Heat Type sensitivity with heat A – rate of rise enabled Rate of Rise B –...

  • Page 41: Mub Universal Base

    814SB, or MkII Sounder Base plugged into it. 3.11.2 MUB AND 5B WIRING Figure 3.1 shows the wiring for a MUB and 5B, including optional wiring of a remote indicator. TYCO 5B TYCO MUB (M614) 5“ UNIVERSAL MINERVA BASE UNIVERSAL BASE...

  • Page 42: 5Bi Isolator Base

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.12 5BI ISOLATOR BASE 3.12.1 GENERAL The 5BI base is designed for isolating short circuited sections of the analog loop. For instance it can be used where the loop wiring crosses zone boundaries to prevent a short circuit from affecting more than one zone.
  • Page 43 Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming TYCO 5BI Tyco E500Mk2 TYCO MUB ISOLATOR Remote Indicator TYCO 5BI (controlled by MX4428) UNIVERSAL BASE ISOLATOR BASE BASE M and L2 connections to Isolator Base are symmetrical and can be transposed without affecting operation Figure 3.2 5BI Wiring...

  • Page 44: 814Rb Relay Base

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.13 814RB RELAY BASE 3.13.1 GENERAL The 814RB detector base is designed as a low cost output device. The relay is controlled by the detector which is plugged into the base, but the operation of the relay can be quite separate from the operation of the detector.
  • Page 45 Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Figure 3.3 Relay Base Issue 1.5 24 March 2006 Page 3-29...

  • Page 46: 814Sb Sounder Base

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.14 814SB SOUNDER BASE 3.14.1 GENERAL The 814SB detector base is designed as a low cost warning device. One of three different tones may be selected (none of which are AS2220 compliant), and three sound levels are selectable.

  • Page 47: General

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.15 MKII SOUNDER BASE 3.15.1 GENERAL The MkII Sounder Base is a range of detector bases which are designed as low cost warning devices, some of which are loop powered and others are externally powered. The sounder is controlled by the detector which is plugged into the base, but the operation of the sounder can be quite separate from the operation of the detector.

  • Page 48: General

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.16 MIM800 AND MIM801 MINI INPUT MODULES 3.16.1 GENERAL The MIM800 and MIM801 Mini Input Modules are suitable for interfacing voltage free contacts such as switches, relay contacts, flow switches, or non-indicating detectors. Dedicated Manual Call Point products are available that have the MIM800 or MIM801 mounted on the back of an MCP.

  • Page 49: Field Wiring

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Maximum input cable length 200Ω + / - 5%. Alarm Resistance 100Ω + / - 5%. (if used) 3.16.3 FIELD WIRING Requires Param_2 = 176 (MIM800), Param_5 = 40 (MIM801) PREVIOUS NEXT PREVIOUS...

  • Page 50: Mx4428 Programming Options - Mim801

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming For the MIM801 the default value of 15 selects normally closed operation with interrupt on alarm (e.g. for New Zealand callpoints). Setting the mode to 13 disables interrupt on alarm (e.g.

  • Page 51: Cim800 Contact Input Module

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.17 CIM800 CONTACT INPUT MODULE 3.17.1 GENERAL The CIM800 Contact Input Module is suitable for interfacing voltage free contacts, e.g. switches, relay contacts, flow switches, or non-indicating detectors. It has two inputs, the state of which are ORed together to generate the point status.

  • Page 52: Field Wiring

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.17.3 FIELD WIRING Requires Param_2 = 176 ANALOG LOOP ANALOG LOOP PREVIOUS NEXT PREVIOUS NEXT DEVICE DEVICE DEVICE DEVICE CIM800 CONTACT MODULE CIM800 CONTACT MODULE Normally Open Normally Open, S/C = Fault Unused inputs (A or B) must be terminated with ANALOG LOOP a 200 ohm EOL resistor.

  • Page 53: Normally Open Parameter Description Default Mode No Interrupt

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Normally Open Parameter Description Default Mode No interrupt Interrupt Normal to alarm threshold Normal to o/c threshold Alarm to s/c threshold No alarm resistor 100 ohm alarm resistor Normally Closed Parameter Description...

  • Page 54: Cp820 Manual Call Point

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.18 CP820 MANUAL CALL POINT 3.18.1 GENERAL The CP820 Manual Call Point consists of a MIM800 mounted on a Break Glass Switch assembly. The MIM800 is factory programmed with a different type-id to allow the CP820 to be distinguished from a generic MIM800.

  • Page 55: Fp0838 / Fp0839 Manual Call Points

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.19 FP0838 / FP0839 MANUAL CALL POINTS 3.19.1 GENERAL The FP0838 and FP0839 Manual Call Points consist of a MIM801 mounted on an 1841 Break Glass Switch assembly. They are designed for normally closed contacts as is required in New Zealand.

  • Page 56: Dim800 Detector Input Monitor

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.20 DIM800 DETECTOR INPUT MONITOR 3.20.1 GENERAL The DIM800 Detector Input Module is suitable for interfacing conventional non-addressable detectors e.g. heat detectors, smoke detectors, beam detectors, etc, onto the MXP loop. Alarm and o/c fault conditions are determined by the MXP.

  • Page 57: Dim800 Specifications

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Unused inputs (A or B) must be terminated with 4k7 EOL. 4k7 EOL 4k7 EOL Refer text for Conventional voltage Detectors requirements (refer appropriate wiring diagrams) ANALOG LOOP ANALOG LOOP PREVIOUS NEXT...

  • Page 58: Dim800 Detector Compatibility

    Hard contact devices must be rated for at least 30V and currents up to 50mA. Not an SSL Listed combination Remote indicator output cannot be used in common with Tyco 614 series or the Minerva M614 series (and most other Tyco/Olsen) detectors.

  • Page 59: Rim800 Relay Interface Module

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.21 RIM800 RELAY INTERFACE MODULE 3.21.1 GENERAL The RIM800 Relay Interface Module is suitable for relay outputs which require clean voltage free contacts and no supervision. For example it can be used to signal states to other systems (e.g.

  • Page 60: Mx4428 Programming Options - Rim800

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.21.4 MX4428 PROGRAMMING OPTIONS - RIM800 The mode selects the control source for the RIM800 output. By default (mode = 4) the output follows the logical relay. However if the mode is 0 then the output is controlled by the corresponding circuit alarm state.

  • Page 61: Snm800 Sounder Notification Module

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.22 SNM800 SOUNDER NOTIFICATION MODULE 3.22.1 GENERAL The SNM800 Sounder Notification Module is suitable for relay outputs which require supervision of the load wiring and optional supervision of the DC power supply (if any). When inactive, a reverse polarity supervision voltage is applied to the load wiring.

  • Page 62: Snm800 Field Wiring

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.22.3 SNM800 FIELD WIRING Power Supply 0.5W Power to next device ANALOG LOOP ANALOG LOOP PREVIOUS NEXT DEVICE DEVICE S+ S- R+ R- I+ I- I+ I- SNM800 SOUNDER NOTIFICATION MODULE Figure 3.8 SNM800 Field Wiring It is recommended that the external supply covers only one zone, or the power wiring be...

  • Page 63: Lps800 Loop Powered Sounder Module

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.23 LPS800 LOOP POWERED SOUNDER MODULE 3.23.1 GENERAL The LPS800 Loop Powered Sounder Module is suitable for 24V DC outputs powered by the MX Loop. It can supply up to 75mA at 24VDC. When inactive, a reverse polarity supervision is applied to the load wiring.
  • Page 64 MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 0.5W MX LOOP MX LOOP PREVIOUS NEXT DEVICE DEVICE S+ S- R+ R- LPS800 LOOP POWERED SOUNDER MODULE Figure 3.9 LPS800 Field Wiring Page 3-48 24 March 2006 Issue 1.5...

  • Page 65: Vlc-800Mx Vesda Lasercompact

    / m. A PC plugged into the VLC800 is required to set the sensitivity, to normalise the airflow, and perform other setup functions. The sensitivity is NOT controlled at the MX4428. Refer to Tyco Safety Products UK publication 17A-03-VLC for further details on installing, commissioning and servicing the VLC-800. 3.24.2...

  • Page 66: Mx4428 Programming Options - Vlc800

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming 3.24.3 MX4428 PROGRAMMING OPTIONS - VLC800 The only programmable items for the VLC800 are 1. The pre alarm threshold. 2. The source of the remote LED output. 3. The source of the onboard relay output and external relay output (they operate together).

  • Page 67: Avf / Rad / Sad / Flowswitch Delays

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.25 AVF / RAD / SAD / FLOWSWITCH DELAYS AVF/RAD or SAD or FLOWSWITCH or AVF/SAD may be configured for a “circuit” and will apply to all input devices on the circuit except CP820 devices, and MIM801 devices with “interrupt”...
  • Page 68 MX4428 MXP Engineering / Technical Manual Document: LT0273 Device Information and Programming THIS PAGE INTENTIONALLY LEFT BLANK Page 3-52 24 March 2006 Issue 1.5...

  • Page 69: Chapter 4 Analogue Loop Design Considerations

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations CHAPTER 4 ANALOGUE LOOP DESIGN CONSIDERATIONS Issue 1.5 24 March 2006 Page 4-1...

  • Page 70: Analogue Loop Configuration Selection

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Analog Loop Design Considerations ANALOGUE LOOP CONFIGURATION SELECTION 4.1.1 LINES & LOOPS The interface between the MXP and its addressable devices requires two wires. The MXP has two lines (“left” and “right”) which are designed to be connected in a loop. The LOOP configuration is generally preferred and indeed will often be mandatory for compliance with standards as discussed below.

  • Page 71: Analogue Loop/Line Layouts

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations ANALOGUE LOOP/LINE LAYOUTS 4.2.1 LINE MODE The MXP is designed to run in LOOP mode only. The dual line mode of the MPR is not supported. However a star configuration can be used, refer to section 4.2.3. 4.2.2 LOOP DESIGN WITH SHORT CIRCUIT ISOLATORS There are two main reasons for using isolator bases on the analogue loop.
  • Page 72 MX4428 MXP Engineering / Technical Manual Document: LT0273 Analog Loop Design Considerations MX DETECTOR LOOP Figure 4.1 Loop with Isolator Bases Note 1: Although it is not essential to have Isolator Bases between the MXP and the first / last device on the loop, greater protection is provided by doing so. It is recommended that the cable between the MXP line terminals and the adjacent Isolator Bases should be kept as short as possible, and have no devices attached to it.

  • Page 73: Star Connection Of Analogue Lines

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations 4.2.3 STAR CONNECTION OF ANALOGUE LINES It is not always necessary to connect addressable systems as loops, especially if an existing conventional detector system is being converted to addressable detectors. As the existing detector zone cables probably already terminate at the main panel, it is possible to connect these in a star connection to the MXP as shown in Figure 4.2.

  • Page 74: Cable Selection Considerations

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Analog Loop Design Considerations MX DETECTOR LOOP 4 Isolator Bases (with or without detectors) Universal Bases, Sounder Bases, Relay Bases SPUR1 SPUR2 SPUR3 SPUR4 NOTE : Total cable length < 2000m Figure 4.2 STAR CONNECTION ON MXP CABLE SELECTION CONSIDERATIONS Selection of cable to implement the Analogue Loop requires specification of ..

  • Page 75: Ac Requirements

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations ELECTRICAL - Different construction/materials give different REQUIREMENTS AC characteristics, noise immunity, etc. (ii) CABLE WEIGHT (i.e. gauge of wire used) MECHANICAL- Does the application REQUIREMENTS specification, or prevailing standards, call for a minimum gauge (AS1670.1 specifies a minimum of .75mm²...

  • Page 76: Noise Considerations

    MX4428 MXP Engineering / Technical Manual Document: LT0273 Analog Loop Design Considerations NOISE CONSIDERATIONS Although the MXP loop has been designed for minimum electrical interference, it is still capable of both picking up and generating electrical interference. The longer the loop the greater the potential problems.

  • Page 77: Chapter 5 Mxp Current Consumption

    Document: LT0273 MX4428 MXP Engineering /Technical Manual MXP Current Consumption CHAPTER 5 MXP CURRENT CONSUMPTION Issue 1.5 24 March 2006 Page 5-1...

  • Page 78: Theory

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Current Consumption THEORY The MXP current consumption is considerably higher than that of the other responders (even higher than the MPR, in fact it can be considerably higher than the MPR depending on the sounder load).

  • Page 79: Quiescent Current

    Document: LT0273 MX4428 MXP Engineering /Technical Manual MXP Current Consumption It is of interest to recalculate the current consumption assuming for example the supply voltage is only 17.0V (the minimum operating voltage of the MXP). In this case the consumption is increased to 721mA. It can be seen that if the responder loop power wiring has too much resistance, the voltage to the responders is reduced by their current consumption, which results in them requiring even more current and compounding the problem.
  • Page 80 MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Current Consumption THIS PAGE INTENTIONALLY LEFT BLANK Page 5-4 24 March 2006 Issue 1.5...

  • Page 81: Chapter 6 Event Log And Status At Mx4428

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Event Log and Status at MX4428 CHAPTER 6 EVENT LOG AND STATUS AT MX4428 Issue 1.5 24 March 2006 Page 6-1...

  • Page 82: Returned Analog Values

    F4000 MXP Engineering / Technical Manual Document: LT0273 Event Log and Status at MX4428 RETURNED ANALOG VALUES The MXP returns up to 4 different analog values per device - CV, TV, HH, and HL. The following table details what each value means for each device type. Type 814H Temperature...

  • Page 83: Fault And Alarm Event Log

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Event Log and Status at MX4428 FAULT AND ALARM EVENT LOG The table below lists examples of event log items which are produced at the MX4428 panel. Circuit / point event logging must be enabled to see the events listed below. Zone events are not shown.
  • Page 84 F4000 MXP Engineering / Technical Manual Document: LT0273 Event Log and Status at MX4428 THIS PAGE INTENTIONALLY LEFT BLANK Page 6-4 24 March 2006 Issue 1.5...

  • Page 85: Chapter 7 Mxp Technical Description

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description CHAPTER 7 MXP TECHNICAL DESCRIPTION Issue 1.5 24 March 2006 Page 7-1...

  • Page 86: General

    MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Technical Description GENERAL The MXP has two major functions: To provide an interface to an MX4428 responder (communications/power) loop, via which data gathered by the MXP may be transferred to the MX4428 Master for display, annunciation, and processing as appropriate.

  • Page 87: Circuit Description

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description CIRCUIT DESCRIPTION 7.2.1 BLOCK DIAGRAM A block diagram of the MXP is given in Figure 7.1. The MXP can be divided into 4 sections: The microprocessor and memory. This is the "heart" of the MXP. (ii) The power supply.

  • Page 88: Mxp Power Supply

    MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Technical Description Switching PSU +40V ISO POWER SUPPLY +5V ISO 24V IN 0V ISO C65.C66 opto 24V OUT Feedback coupler Connect / Disconnect 0V IN U7C, U7D 0V OUT MIN V RESPONDER RESPONDER LOOP INTERFACE LOOP Isolation Barrier...
  • Page 89 Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description This is a switched version of "+V", which is switched OFF when the loop supply falls below the voltage required for correct operation of the MXP. (ii) 40V ISO A regulated, isolated 40V supply used to drive the Analogue Loop circuitry and addressable devices.

  • Page 90: Mx4428 Loop Interface

    MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Technical Description 7.2.3.4 +5V ISO & +5V Batt A second L1 secondary winding is used to produce an 8V supply, This 8V supply is poorly regulated and may vary from 7.5V to 10V depending on the 40V ISO load. The 8V supply is regulated by U11 to 5.2V.

  • Page 91: Analogue Loop Interface

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description In response to DISCON IN– going low, the microprocessor outputs a 10 msec pulse to DISCON OUT+, which applies “0V” to RL3 pin 16 through D5 and U8 pin 2, and “+24V” through Q11 to RL3 pin 1, thereby setting the relay contacts to their open state.
  • Page 92 MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Technical Description Figure 7.2 Analog Loop Typical DC Level and Data Waveform 7.2.5.1 Over-Current Protection The current drawn by the analog loop passes through current sense resistors R22 - R26. When the voltage across these resistors exceeds approximately 0.65 volts (corresponding to a current of just over 400mA), the collector of Q2 begins to conduct.
  • Page 93 Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description 7.2.5.2 Data Transmission Each bit transmitted consists of single cycle of a sinewave of one frequency for a ‘0’ and another frequency for a ‘1’. Each cycle is made up from a number of discreet samples, with a 5uS spacing between samples.

  • Page 94: Mxp Adjustments

    MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Technical Description In the event that there are isolator bases installed, but there is a short on the section of loop between the MXP and the first (or last) isolator, the MXP will detect the short and drive the loop only from the opposite end.

  • Page 95: Mxp Led Indications

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description MXP LED INDICATIONS The status LED (LD1) on the MXP board indicates the following conditions – Indication Condition 2 quick flashes every 2 The MXP is normal and polled by the MX4428 panel. seconds 1 quick flash every 2 The MXP is normal apart from NOT being polled by the...

  • Page 96: Parts List

    MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Technical Description PARTS LIST PART NUMBER. DESCRIPTION QTY/ASSY REF DESIG PA0893 PCB ASSY,1901-213,F4000 MXP RESPONDER CA0001 CAP,CERAMIC,10P,50V 1.0000 C45 CA0002 CAP,CERAMIC,15P,50V 2.0000 C1 C2 CA0004 CAP,CERAMIC,68P,50V 1.0000 C63 CA0005 CAP,CERAMIC,100P,50V 1.0000 C39 CA0009 CAP,CERAMIC,2N2,50V 1.0000 C37...
  • Page 97 Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description RL0052 RELAY,OMRON G6A-274P-24VDC 2.0000 RL1 RL2 RR0001 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,1E00 1.0000 R84 RR0013 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,22E0 2.0000 R22 R23 RR0016 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,39E0 1.0000 R92 RR0017 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,47E0 2.0000 R24 R25 RR0022 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,120E 2.0000 R66 R85 RR0023 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,150E 1.0000 R93...
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  • Page 99: Chapter 8 Mxp Diagnostic Terminal

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal CHAPTER 8 MXP DIAGNOSTIC TERMINAL Issue 1.5 24 March 2006 Page 8-1...

  • Page 100: Mxp Diagnostic Terminal Operation

    MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Diagnostic Terminal MXP DIAGNOSTIC TERMINAL OPERATION 8.1.1 INTRODUCTION The MXP provides diagnostic functions via its serial port (J5) with a terminal or PC connected. Commands may be entered which : • Display the analogue values (Raw values, Filtered values, etc) of selected devices. •...

  • Page 101: Displaying Device Analogue Values - Cv, Tv, Etc

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal Adds all points to the list of points to be monitored. SP nnn Adds point nnn to list. P nnn Adds point nnn to list SP nnn mmm Adds points nnn to mmm. P nnn mmm Adds points nnn to mmm.
  • Page 102 MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Diagnostic Terminal RoR=xx gives the rate of rise in °C/minute. This is the value which is compared with the threshold to decide if a rate of rise pre-alarm exists, and the value which is used to “enhance”...

  • Page 103: St (Status Command)

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal 8.1.4.7 CP820 Manual Callpoint T=165; P= 22; CP=0 CP=xxx gives the raw value received from the callpoint. 8.1.4.8 CIM800 Contact Input Module T=165; P= 23; CIM A= 90, B= 91 CIM A=xxx;...

  • Page 104: Analog Loop Diagnostics

    MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Diagnostic Terminal 8.1.6 ANALOG LOOP DIAGNOSTICS 8.1.6.1 TC Command (Total Counts) This command gives totals of node failures and powerups on the analog loop. See the EC command to get values broken down to individual devices. >>tc Transmit echo reception fail count 5 Total reply fail count 191...
  • Page 105 Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal 8.1.6.4 DP Command (Diagnostic Poll) This command lists all the devices found (irrespective of the MX4428 programming) by issuing a command to each side of the loop (left and right) which requests all devices to identify themselves.

  • Page 106: Advanced Commands

    The following commands are available for specialised purposes. Use these commands only as instructed by Tyco Safety Products Christchurch. >>ah Advanced diagnostic commands. Use these commands only as instructed by Tyco Safety Products Chrsitchurch ------- General ----------------------------------- : relay diagnostics toggle...

  • Page 107: Mxp Event Log

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal DP r Perform a “diagnostic poll” on responder r. This command initiates a diagnostic poll, similar to that described in section 8.1.6.4. The results are displayed automatically on the MXP but not the MX4428. To see the results on the MX4428 use the DR command.

  • Page 108: Flash Programming

    Document: LT0273 MXP Diagnostic Terminal FLASH PROGRAMMING On occasion, Tyco Safety Products Christchurch may provide a new version of the MXP software. This software is stored in the Flash IC, U2. It can be updated in the field as described below.
  • Page 109 MXP RESET button again. If there is still a problem obtain a fresh copy of the files and try again. If the problem persists, note carefully exactly what is displayed on the screen and contact Tyco Safety Products Christchurch. 10. Remove the WRITE ENABLE link, or insert it onto one pin only.
  • Page 110 MX4428 MXP Engineering /Technical Manual Document: LT0273 MXP Diagnostic Terminal 13. Check the display on the terminal emulator to ensure the program runs and the new version is installed. An example of the output on power up is shown below. Note that some of this may scroll off the screen, however the “MXP Monitor version x.xx ...”...

  • Page 111: Chapter 9 Device Processing

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing CHAPTER 9 DEVICE PROCESSING Issue 1.5 24 March 2006 Page 9-1...

  • Page 112: Exponential Filter

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board EXPONENTIAL FILTER An “exponential filter” is used to smooth values received from all detector types and remove “noise”. Value Time This is a kind of moving average of recent samples, with the most recent samples given the most weighting.
  • Page 113 Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing The output of the filter approaches the input with a maximum slope, or maximum step on each sample. ADJ = IN - OUT IF ADJ > SL THEN ADJ = SL IF ADJ <...

  • Page 114: Heat Processing

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board HEAT PROCESSING CONVERSION OF DETECTOR READING TO °C 9.3.1 The temperature readings from the detector (814H or the temperature element of an 814PH or 814CH) are returned from input AI1 of the MX ASIC. These are converted to °C according to the following table.
  • Page 115 Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing PreAlarm Comparator Threshold Fixed Temp PreAlarm Exponential Slope Comparator Alarm Filter Limiter Threshold Fixed Temp Alarm Raw°C Comparator PreAlarm Table Reading Threshold ROR PreAlarm Lookup Slower Exponential Slope Filter Multiplier Subtractor Limiter Comparator...

  • Page 116: Photo Processing

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board PHOTO PROCESSING 9.4.1 SMARTSENSE PROCESSING The smoke reading of the detector is returned as input AI0 from the device ASIC. Figure 9.2 shows a general view of the processing of the values received from the photoelectric sensor. It is of interest that the value is multiplied by a factor (between 1 and 4) depending on the factory calibration of the sensor, and again multiplied by a factor depending on the temperature rate of rise (when “enhanced”...

  • Page 117: Fastlogic Processing

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing Enhancement Multiplier Param=12 Param=6 Temperature Rate of Rise (°C/min) Figure 9.3 Enhancement of smoke reading for temperature rate of rise 9.4.3 FASTLOGIC PROCESSING When “FastLogic” is selected, most processing is done within the proprietary “FastLogic” module.

  • Page 118: Co Processing

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board CO PROCESSING 9.5.1 CALIBRATION AND TEMPERATURE COMPENSATION The CO reading of the detector is returned as input AI0 of the device ASIC. The CO readings are adjusted depending on a calibration factor set at the factory and stored in EEPROM.

  • Page 119: Ionisation Processing

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing IONISATION PROCESSING The smoke reading of the detector is returned in two parts as inputs AI0 and AI1 of the device ASIC. In the MXP the average value of AI0 and AI1 is used for all calculations, so that all returned values to the MX4428 lie within the range of 0 –...

  • Page 120: Mim800 / Cim800 / Mim801 Processing

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board MIM800 / CIM800 / MIM801 PROCESSING The MIM800 and CIM800 return a value which depends on the external resistance across the contact terminals and which can be modelled by the equation – VALUE = 226 * (150 + 3) / (150 + Rext + 3) The MIM801 returns a value which depends on the external resistance across the contact terminals and which can be modelled by the equation –...

  • Page 121: Algorithm - Mim800, Cim800

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing These are designed for the following configurations– Device Mode Contact R EOL R Max Wiring R MIM800 Not used 200Ω 50Ω CIM800 100Ω 200Ω 10Ω 200Ω 50Ω Not used 200Ω 50Ω...

  • Page 122: Dim Processing

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board DIM PROCESSING 9.8.1 LOAD GRAPH Figure 9.8 shows the V / I characteristics for the DIM detector terminals, together with the fault and alarm thresholds when using the default parameters. The shaded areas show the region of uncertainty.

  • Page 123: Supply Monitoring - Dim800

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing 9.8.4 SUPPLY MONITORING - DIM800 The DIM800 supply is monitored with input AI3 of the device ASIC. If the supply voltage is less than 18V, a SUPPLY FAIL fault is generated. (The threshold can be changed with parameter 3 if needed.) If the supply fails completely, a DIM800 with revision less than 10 will stop responding to polls and a NODE FAIL fault is generated.

  • Page 124: Lps Processing

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board Both short circuit faults and open circuit faults will be logged as SUPERVISION FAULT, and relay stuck faults will be logged as CONTROL CB FAIL. Only the first fault will be logged. When all relay faults go away, the event logged at the MX4428 will be NORMAL OFF or NORMAL ON as the case may be, regardless of the original fault logged.

  • Page 125: Filter Step Limits

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing 9.13 FILTER STEP LIMITS Note that Step Limits are always expressed as “Units per 5 seconds”. This differs from MPR where heat units are “units per 10 seconds”, but smoke limits are “time to alarm” (the inverse).

  • Page 126: Non Latching Test Mode

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board 9.17 NON LATCHING TEST MODE In this mode no alarms are latched, and all filtering is bypassed, however detector and device LEDs follow the alarm status. About 10 seconds after a device goes into alarm it is automatically “held in reset”...

  • Page 127: Ancillary Filtering

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing AutoReset Commission Zone System Fast Slow Point Test Normal Mode Alarm test. Point Test Auto test Test with test fire Yes on smoke / CO. Yes on smoke / CO Detector test (Alarm result simulated on 8xxH Simulated 100°C on 8xxH.

  • Page 128: Reset

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board 9.23 RESET 9.23.1 RESET OF ADDRESSABLE DETECTOR For about 20 seconds after reset is applied to an addressable detector, the exponential filter and slope limiting filter are disabled if their input values are less than their output values. In other words their outputs will follow their inputs downwards with no filtering.

  • Page 129: Device Initialisation And Polling

    Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing 9.24 DEVICE INITIALISATION AND POLLING The following actions are taken for each device when it powers up or when the MXP powers up. One action is performed on (or instead of) each 5 second poll. •...

  • Page 130: Software Versions

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board SOFTWARE VERSIONS 9.25 The following software versions have been released for general use. Version Features 1.03 First full release 1.04 Fixed failure of photo self test when using fuzzy logic with some detectors. (Limited Fixed standalone mode did not work if no valid database.

  • Page 131: Chapter 10 Mxp Loop Filter Board

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board CHAPTER 10 MXP LOOP FILTER BOARD Issue 1.5 24 March 2006 Page 10-1...

  • Page 132: Use Of Mxp Loop Filter Board

    MX4428 MXP Engineering / Technical Manual Document: LT0273 MXP Loop Filter Board 10.1 USE OF MXP LOOP FILTER BOARD Some field problems have occurred with the MXP detector loop picking up interference from adjacent or nearby wiring, resulting in faults and possibly prealarms. The “MXP Loop Filter board”...

  • Page 133: Diagnostics

    Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board Note – if you are fitting the board to an MXP in a responder box, you may need to tip the underside of the plastic standoffs inwards to get the board to fit into the MXP board connector easily –...
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