MX4428 MXP ENGINEERING / TECHNICAL MANUAL MX4428 PRODUCT MANUAL VOLUME 11 Document Number: LT0273 Issue 1.5; 24 March 2006 - APPROVALS AUSTRALIAN STANDARD AS4428.1 - SSL Listing Number ....................................................................................... afp1446 NEW ZEALAND STANDARD NZS4512-1997 (INCL AMDT 1 & 2) - FPA (NZ) Listing number .................................................................................
MX4428 MXP Engineering /Technical Manual 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).
Document: LT0273 MX4428 MXP Engineering / Technical Manual TABLE OF CONTENTS NON-DISCLOSURE AGREEMENT....................................................................................................... II END USER LIABILITY DISCLAIMER .................................................................................................... II AMENDMENT LOG .............................................................................................................................. II TRADEMARKS .............
MX4428 MXP Engineering /Technical Manual 3.11 3.11.1 3.11.2 3.11.3 3.12 3.12.1 3.12.2 3.12.3 3.13 3.13.1 3.13.2 3.13.3 3.14 3.14.1 3.14.2 3.14.3 3.15 3.15.1 3.15.2 3.15.3 3.16 3.16.1 3.16.2 3.16.3 3.16.4 3.16.5 3.17 3.17.1 3.17.2 3.17.3 3.17.4 3.18 3.18.1 3.18.2 3.19 3.19.1 3.19.2 3.20 3.20.1 3.20.2 3.20.3 3.20.4 3.21 3.21.1 3.21.2 3.21.3 3.21.4 3.22 3.22.1 3.22.2 3.22.3 3.22.4 3.23 3.23.1 3.23.2 3.23.3 3.24 3.24.1 3.24.2 3.24.3 3.25 3.25.1 Document: LT0273 MUB UNIVERSAL BASE .............................
Document: LT0273 3.25.2 3.25.3 3.25.4 MX4428 MXP Engineering / Technical Manual SAD .............................................................................................................................. 3-51 AVF/SAD ...................................................................................................................... 3-51 FLOWSWITCH .............................................................................................................
MX4428 MXP Engineering /Technical Manual 8.1.9 8.2 8.2.1 8.2.2 Document: LT0273 MXP EVENT LOG .......................................................................................................... 8-9 FLASH PROGRAMMING .................................................................................................... 8-10 FILES REQUIRED........................................................................................................ 8-10 PROCEDURE................................................
Document: LT0273 MX4428 MXP Engineering / Technical Manual Introduction CHAPTER 1 INTRODUCTION Issue 1.
MX4428 MXP Engineering / Technical Manual Introduction 1.1 Document: LT0273 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.
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.
MX4428 MXP Engineering / Technical Manual Introduction 1.4 AAR AC ACZ ADR Analogue Loop ARR AVF AZF CO CV DC Detector EOL Evacuation Device FIP GLOBAL HH HL LCD LED MAF MIC X MPR MXP MCP Module NA NC NLR NO PCB Point PSU Responder Responder Loop ROR RF RRM RZDU Sensor SLV Zone Page 1-4 Document: LT0273 TERMINOLOGY Analogue Addressable Responder. Alternating Current. Ancillary Control Zone. Advanced Detector Responder.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Responder Loop Design Considerations CHAPTER 2 RESPONDER LOOP DESIGN CONSIDERATIONS Issue 1.
MX4428 MXP Engineering / Technical Manual Responder Loop Design Considerations 2.1 Document: LT0273 MXP APPLICATION CONSIDERATIONS The inclusion of one or more MXPs in an MX4428 system requires consideration of ..... (i) 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.
Document: LT0273 2.2 2.2.1 MX4428 MXP Engineering / Technical Manual Responder Loop Design Considerations "LOGICAL" RESPONDERS 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.
MX4428 MXP Engineering / Technical Manual Responder Loop Design Considerations Document: LT0273 Number of Logical Responders (NLR) Number of Circuits (Relays) available (NC = 4 * NLR) Number of Points per circuit (relay) PC = 200/NC Total Quantity of Points in Last Circuit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96 100 104 108 112 116
Document: LT0273 MX4428 MXP Engineering / Technical Manual Responder Loop Design Considerations F4000 LOOP ANALOG LOOP MAPPED TO TOTAL OF 200 DEVICES DEVICE 1-16 C1/1 R1/1 DEVICE 17-32 C1/2 R1/2 DEVICE 33-48 C1/3 R1/3 DEVICE 49-64 C1/4 R1/4 DEVICE 65-80 C2/1 R2/1 DEVICE 81-96 C2/2 R2/2 DEVICE 97-112 C2/3 R2/3 DEVICE 113-128 C2/4 R2/4 DEVICE 129-144 C3/1 R3/1 DEVICE 145-160 C3/2 R3/2 DEVICE 161-176 C3/3 R3/3 DEVICE 177-200 C3/4 R3/4 LOGICAL RESPONDER #1 LOGICAL RESPONDER #2 F4000
MX4428 MXP Engineering / Technical Manual Responder Loop Design Considerations Document: LT0273 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. 2.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming CHAPTER 3 DEVICE INFORMATION AND PROGRAMMING Issue 1.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.1 Document: LT0273 DEVICE TYPES The MXP can communicate with a mix of up to 200 addressable devices, within limits defined by loop size. 3.1.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming The standard base for use with the 814 detectors is: MUB 5B Minerva Universal Base (4”) Minerva Universal Base (5”) The following special purpose bases may also be used. 5BI 814RB 814SB MkII Sounder Base (802SB, 812SB, 901SB, and 912SB) Isolator Base Relay Base Sounder Base Sounder Base The 814RB and 814SB may be plugged into an MUB, 5B or a 5BI, or mounted directly on a wall / ceiling.
MX4428 MXP Engineering / Technical Manual Device Information and Programming e) Document: LT0273 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. f) Mini Input Module MIM800 This unit has a single input for monitoring clean contacts (e.g.
Document: LT0273 m) 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” fault will be generated if it does not operate. n) Short Circuit Isolator 5BI This detector base is designed for isolating short circuited sections of the analog loop.
MX4428 MXP Engineering / Technical Manual Device Information and Programming Document: LT0273 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.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.2 3.2.1 DEVICE HANDLING CAPABILITY 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. If this is not the case, it is necessary to perform the calculations described below. Quiescent Current DEVICE MAX NO.
MX4428 MXP Engineering / Technical Manual Device Information and Programming Document: LT0273 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. 3.2.2 DC LOAD The total current available from the MX Loop terminals on the MXP is 400mA DC. This must supply operating current to all addressable devices an the loop.
Document: LT0273 3.2.4 MX4428 MXP Engineering / Technical Manual Device Information and Programming 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). Include only one of the detectors at the ends of the section. The sum for any section must not exceed 100. See also section 4.1.3 for details of AS1670 requirements and section 4.1.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.3 Document: LT0273 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) • Remote LED output of detectors. Each of these is programmable at the MX4428 for which of 3 sources controls the output. In all cases the outputs are turned off if the point is isolated.
Document: LT0273 3.3.1 MX4428 MXP Engineering / Technical Manual Device Information and Programming 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. The LPS800 is programmed as an SNM800. For example the following are the settings for the 814I.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.4 Document: LT0273 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 814PH Smoke 814PH Smoke FastLogic Default 12% (80 det units) Medium Alternate 8% (37 det units) N/A Range 8% - 12% 814PH Heat component 63 N/A 814CH CO 38ppm (0.3 MIC X) (93 det units) 66ppm(1) (0.
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. For the 814PH detector the displayed values bear little resemblance to the static sensitivity of the detector.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.6 Document: LT0273 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.
Document: LT0273 3.7 3.7.1 MX4428 MXP Engineering / Technical Manual Device Information and Programming 814H HEAT DETECTOR GENERAL The 814H is an analogue thermal detector. The detector senses the air temperature and sends this value to the MXP. The MXP makes any decisions as to whether this is an alarm, fault, normal or whatever. The MXP can be programmed (at the MX4428 panel) to interpret the values to implement a Type A, Type B, Type C, or Type D Heat Detector.
MX4428 MXP Engineering / Technical Manual Device Information and Programming Parameter Mode P0 P1 P4 Document: LT0273 Description Value Heat Type 4 A/C – rate of rise enabled.
Document: LT0273 3.8 3.8.1 MX4428 MXP Engineering / Technical Manual Device Information and Programming 814I IONISATION SMOKE DETECTOR GENERAL The 814I is an ionisation smoke detector. The detector senses the amount of smoke present and sends this value to the MXP. The MXP makes any decisions as to whether this is an alarm, fault, normal or whatever. The integral LED is turned on by the MXP when an alarm is detected.
MX4428 MXP Engineering / Technical Manual Device Information and Programming Parameter Mode P0 P1 P2 P3 P4 P5 P6 Document: LT0273 Description Value Functional Base Control Remote LED Control 0 Circuit Alarm Circuit Alarm 1 Circuit Alarm Relay 2 Circuit Alarm Point Alarm 4 Relay Circuit Alarm 5 Relay Relay 6 Relay Point Alarm 8 Point Alarm Circuit Alarm 9 Point Alarm Relay 10 Point Alarm Point Alarm Pre Alarm Threshold Alarm Threshold Value Threshold 23 0.22 MICX (Alternate) 66 0.39 MICX (Default) 130 0.
Document: LT0273 3.9 MX4428 MXP Engineering / Technical Manual Device Information and Programming 814PH PHOTOELECTRIC SMOKE & HEAT DETECTOR & 814P PHOTOELECTRIC SMOKE ONLY DETECTOR 3.9.1 GENERAL The 814PH is a photoelectric smoke detector which also includes a temperature sensor. The detector senses the amount of smoke present and the temperature and sends these values to the MXP.
MX4428 MXP Engineering / Technical Manual Device Information and Programming Document: LT0273 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. Note that when a particular function is disabled by the setting of the mode, the parameters relating to that function are not used and should therefore be left with their default settings.
Document: LT0273 Parameter Mode P0 P1 P2 P3 P4 P5 P6 Description Value Smoke Algorithm MX4428 MXP Engineering / Technical Manual Device Information and Programming Enhance smoke sensitivity with heat Rate of Rise.
MX4428 MXP Engineering / Technical Manual Device Information and Programming Document: LT0273 The following global parameters which may be set at the MX4428 affect all applicable points on all MXPs. MX4428 Reference 8XXPH UPPER TRACKING LIMIT 8XXPH DIRTY ALERT LIMIT 8XXPH TRACK INTERVAL 8XXPH FUZZY ALGORITHM Page 3-22 Description Photo Upper Tracking Limit (i.e. the maximum assumed value for clean air) Photo Dirty Alert Limit (i.e.
Document: LT0273 3.10 MX4428 MXP Engineering / Technical Manual Device Information and Programming 814CH CARBON MONOXIDE + HEAT DETECTOR 3.10.1 GENERAL The 814CH is a carbon monoxide (CO) detector which also includes a temperature sensor. The detector senses the amount of CO present and the temperature and sends these values to the MXP.
MX4428 MXP Engineering / Technical Manual Device Information and Programming Document: LT0273 The remaining parameters should not need changing.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.11 MUB UNIVERSAL BASE 3.11.1 GENERAL The MUB accommodates any of the MX 814 series detectors, and may also have an 814RB, 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.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.12 3.12.1 Document: LT0273 5BI ISOLATOR BASE 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.
Document: LT0273 AR + AL + MXP MX4428 MXP Engineering / Technical Manual Device Information and Programming L L L L1 L1 L L1 L1 L1 L1 R L L L2 M L2 M L2 L2 L2 M M R R + TYCO 5BI ISOLATOR BASE + - Tyco E500Mk2 Remote Indicator (controlled by MX4428) TYCO MUB UNIVERSAL BASE TYCO 5BI ISOLATOR BASE + - M and L2 connections to Isolator Base are symmetrical and can be transposed without affecting operation Figure 3.2 5BI Wiring Issue 1.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.13 Document: LT0273 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. (Refer to section 3.3.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Figure 3.3 Relay Base Issue 1.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.14 3.14.1 Document: LT0273 814SB SOUNDER BASE 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. Note that the current taken by a sounder base is very much higher than most other loop devices, and the number of sounder bases on a loop is limited by the available current.
Document: LT0273 3.15 3.15.1 MX4428 MXP Engineering / Technical Manual Device Information and Programming MKII SOUNDER BASE 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. (Refer to section 3.3.
MX4428 MXP Engineering / Technical Manual Device Information and Programming Document: LT0273 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. Refer to sections 3.18 and 3.19.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Maximum input cable length EOL Alarm Resistance 3.16.3 10m 200Ω + / - 5%. 100Ω + / - 5%.
MX4428 MXP Engineering / Technical Manual Device Information and Programming Document: LT0273 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. for heat circuits or other non-immediate alarm conditions). Setting the mode to 12 enables normally open operation and then changing parameter 5 to 40 enables short circuit fault detection.
Document: LT0273 3.17 3.17.1 MX4428 MXP Engineering / Technical Manual Device Information and Programming CIM800 CONTACT INPUT MODULE 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. Therefore unused inputs must be terminated with the EOL resistor.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.17.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Information and Programming Normally Open Parameter Description Mode 8 No interrupt 10 Interrupt P0 Normal to alarm threshold P1 Normal to o/c threshold P2 Alarm to s/c threshold 0 No alarm resistor 176 100 ohm alarm resistor P3 P4 P5 P6 Normally Closed Parameter Description Mode Change to 9 to select normally closed operation P0 Normal to s/c threshold P1 Normal to alarm threshold P2 P3 P4 P5 P6 Issue 1.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.18 3.18.1 Document: LT0273 CP820 MANUAL CALL POINT 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. The normal response time to an input change of state is 0 – 5 seconds, as each device is polled at 5 second intervals by the MXP.
Document: LT0273 3.19 3.19.1 MX4428 MXP Engineering / Technical Manual Device Information and Programming FP0838 / FP0839 MANUAL CALL POINTS 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. The normal response time to an input change of state is 0 – 5 seconds, as each device is polled at 5 second intervals by the MXP.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.20 3.20.1 Document: LT0273 DIM800 DETECTOR INPUT MONITOR 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. An alarm can be recognised within 5 seconds if AVF is not enabled for the circuit, or 15-20 seconds if AVF is enabled.
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 voltage requirements EXT PSU + Conventional Detectors (refer appropriate wiring diagrams) ANALOG LOOP ANALOG LOOP PREVIOUS DEVICE NEXT DEVICE COM +24V L+ L- L+ L- A+ A- B+ B- DIM800 DETECTOR INPUT MONITOR Figure 3.6 DIM800 Field Wiring 3.20.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.20.3 Series Document: LT0273 DIM800 DETECTOR COMPATIBILITY Model Max Qty External Supply Voltage at DIM 20.0V – 28.7V 20.0V – 28.7V 20.0V – 28.7V 20.7 – 28.7V 20.7V - 28.7V 20.7V - 28.7V 20.7V - 28.7V 20.7V - 28.7V 20.7V - 28.7V 20.7V - 28.7V 20.0V - 28.7V 20.0V - 28.7V 20.0V - 28.
Document: LT0273 3.21 MX4428 MXP Engineering / Technical Manual Device Information and Programming 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. BMS or security systems), or to energise loads that do not need to be supervised, e.g. Door Holders. 3.21.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.21.4 Document: LT0273 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.
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. The load devices must therefore have internal or external reverse blocking diodes.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.22.3 Document: LT0273 SNM800 FIELD WIRING + Power - Supply 27k 0.5W EOL + + + - - Power to next device ANALOG LOOP ANALOG LOOP PREVIOUS DEVICE NEXT DEVICE L+ L- L+ L- S+ S- R+ R- I+ I- I+ I- SNM800 SOUNDER NOTIFICATION MODULE Figure 3.
Document: LT0273 3.23 MX4428 MXP Engineering / Technical Manual Device Information and Programming 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. The load devices must therefore have reverse blocking diodes.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 22k 0.5W ELD + + + - - - MX LOOP Document: LT0273 MX LOOP PREVIOUS DEVICE NEXT DEVICE L+ L- L+ L- S+ S- R+ R- LPS800 LOOP POWERED SOUNDER MODULE Figure 3.9 LPS800 Field Wiring Page 3-48 24 March 2006 Issue 1.
Document: LT0273 3.24 3.24.1 MX4428 MXP Engineering / Technical Manual Device Information and Programming VLC-800MX VESDA LASERCOMPACT GENERAL The VLC800 is a derivative of the standard VESDA LaserCOMPACT product family, with the primary difference that it communicates directly on the MX loop. VESDA LaserCOMPACT detectors provide very early warning of potential fire conditions by drawing air samples through 25mm pipe up to 80m long.
MX4428 MXP Engineering / Technical Manual Device Information and Programming 3.24.3 Document: LT0273 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). The VLC800 shares default values with the 814H, 814PH, and 814PHFL. However the alarm threshold is fixed at 100 regardless of any default setting.
Document: LT0273 3.25 MX4428 MXP Engineering / Technical Manual Device Information and Programming 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” enabled. 3.25.1 AVF/RAD Note that AVF is usually unnecessary on the addressable detectors as the built in filtering already provides significant protection against false alarms.
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Document: LT0273 MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations CHAPTER 4 ANALOGUE LOOP DESIGN CONSIDERATIONS Issue 1.
MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations 4.1 4.1.1 Document: LT0273 ANALOGUE LOOP CONFIGURATION SELECTION 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.
Document: LT0273 4.2 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.
MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations Document: LT0273 MXP +VE -VE +VE -VE AL AR MX DETECTOR LOOP M L2 L1 L2 IB L L1 L2 L L1 M L L L L L M L2 L1 L1 M IB L L1 L L1 L L1 L L1 L L1 L L1 IB L1 L L1 L1 L L1 L L1 L L1 L L1 L L1 L L1 L1 L1 L1 L L1 L L1 L L1 L L1 L1 IB L2 L1 M IB Figure 4.
Document: LT0273 4.2.3 MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations 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.
MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations Document: LT0273 MXP +VE -VE +VE -VE AL AR MX DETECTOR LOOP M L1 M L2 L2 L1 M L1 L2 M L1 L2 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 L L1 SPUR1 SPUR2 SPUR3 4 Isolator Bases (with or without detectors) Universal Bases, Sounder Bases, Relay Bases SPUR4 NOTE : Total cable length < 2000m Figure 4.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations ELECTRICAL REQUIREMENTS (ii) Different construction/materials give different AC characteristics, noise immunity, etc. CABLE WEIGHT (i.e. gauge of wire used) MECHANICALREQUIREMENTS Does the application specification, or prevailing standards, call for a minimum gauge (AS1670.1 specifies a minimum of .75mm² standard, for instance).
MX4428 MXP Engineering / Technical Manual Analog Loop Design Considerations 4.7 Document: LT0273 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. Each analogue loop must be considered on its own merits, taking into account possible noise sources along the loop's proposed routing.
Document: LT0273 MX4428 MXP Engineering /Technical Manual MXP Current Consumption CHAPTER 5 MXP CURRENT CONSUMPTION Issue 1.
MX4428 MXP Engineering / Technical Manual MXP Current Consumption 5.1 Document: LT0273 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). It must be carefully considered when engineering the MX4428 responder loop. Use of the F4000CAL PC program is strongly recommended as it performs the following calculations automatically.
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.
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Document: LT0273 MX4428 MXP Engineering / Technical Manual Event Log and Status at MX4428 CHAPTER 6 EVENT LOG AND STATUS AT MX4428 Issue 1.
F4000 MXP Engineering / Technical Manual Event Log and Status at MX4428 6.1 Document: LT0273 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.
Document: LT0273 6.2 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.
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Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description CHAPTER 7 MXP TECHNICAL DESCRIPTION Issue 1.
MX4428 MXP Engineering /Technical Manual MXP Technical Description 7.1 Document: LT0273 GENERAL The MXP has two major functions: (i) 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. (ii) To provide an interface to the Analogue Loop.
Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description 7.2 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: (i) The microprocessor and memory. This is the "heart" of the MXP. (ii) The power supply. The power supply produces the 40V isolated supply for the Analogue Loop and also the 5V isolated supply for the microprocessor. (iii) The MX4428 Loop Interface.
MX4428 MXP Engineering /Technical Manual MXP Technical Description Document: LT0273 Switching PSU POWER SUPPLY 24V IN Q22 +V +5V ISO U11 U10 Q17 +VS +40V ISO 0V ISO D36 RL3 C65.
Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description (i) +VS 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. (iii) 24V ISO Derived from 40V ISO to power 24V relays. (iv) 5V Used to power the CPU and logic circuitry.
MX4428 MXP Engineering /Technical Manual MXP Technical Description 7.2.3.4 Document: LT0273 +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. This supply is then passed through D32 to produce the 5V supply for the CPU and logic circuitry. The 5.
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.
MX4428 MXP Engineering /Technical Manual MXP Technical Description Document: LT0273 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.
Document: LT0273 7.2.5.2 MX4428 MXP Engineering / Technical Manual MXP Technical Description 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. For each sample the digitised value is output on the 68302 CPU onto signals AD1, AD2, AD3, AD4, and AD5.
MX4428 MXP Engineering /Technical Manual MXP Technical Description Document: LT0273 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. Every 30 seconds it will very briefly try reconnecting the faulty end to see if the fault has gone away.
Document: LT0273 7.4 MX4428 MXP Engineering / Technical Manual MXP Technical Description MXP LED INDICATIONS The status LED (LD1) on the MXP board indicates the following conditions – Indication 2 quick flashes every 2 seconds 1 quick flash every 2 seconds 7 flashes then a pause, repeating. Each of the 7 flashes indicates a particular fault is present when the flash is long, or not present when the flash is short. Continuous very rapid flashes Issue 1.
MX4428 MXP Engineering /Technical Manual MXP Technical Description 7.5 PART NUMBER. PA0893 CA0001 CA0002 CA0004 CA0005 CA0009 CA0010 CA0013 CA0016 CA0021 Document: LT0273 PARTS LIST DESCRIPTION PCB ASSY,1901-213,F4000 MXP RESPONDER CAP,CERAMIC,10P,50V CAP,CERAMIC,15P,50V CAP,CERAMIC,68P,50V CAP,CERAMIC,100P,50V CAP,CERAMIC,2N2,50V CAP,CERAMIC,4N7,50V CAP,CERAMIC,22N,40V CAP,CERAMIC,47P,50V CAP,CERAMIC,1N,100V,P2.54MM QTY/ASSY REF DESIG 1.0000 2.0000 1.0000 1.0000 1.0000 2.0000 2.0000 1.0000 6.
Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Technical Description RL0052 RR0001 RR0013 RR0016 RR0017 RR0022 RR0023 RR0027 RR0029 RR0032 RR0033 RR0034 RR0037 RR0038 RR0041 RR0043 RR0044 RR0045 RELAY,OMRON G6A-274P-24VDC RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,1E00 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,22E0 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,39E0 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,47E0 RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,120E RESISTOR,0.6W,1%,50PPM,D2.5mm,P10mm,150E RESISTOR,0.
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Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal CHAPTER 8 MXP DIAGNOSTIC TERMINAL Issue 1.
MX4428 MXP Engineering /Technical Manual MXP Diagnostic Terminal 8.1 8.1.1 Document: LT0273 MXP DIAGNOSTIC TERMINAL OPERATION 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. Select devices for such display. Display and reset error counters. Determine all the devices and their types, as seen from each end of the loop.
Document: LT0273 SPA SP nnn P nnn SP nnn mmm P nnn mmm CPA CP nnn CP nnn mmm SP MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal Adds all points to the list of points to be monitored. Adds point nnn to list. Adds point nnn to list Adds points nnn to mmm. Adds points nnn to mmm. Clears all points from monitoring list. Clears point nnn from list. Clears points nnn to mmm from list. Displays all points selected to be monitored (i.e.
MX4428 MXP Engineering /Technical Manual MXP Diagnostic Terminal Document: LT0273 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” smoke or CO processing. This item will not be displayed if there is no rate of rise alarm configured and there is no enhancement of smoke or CO. SLRoR=xx gives the slope limited rate of rise in °C/minute.
Document: LT0273 8.1.4.7 MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal 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; B=yyy. xxx gives the raw value relating to the module input A and yyy gives the raw value relating to the module input B. 8.1.4.9 DIM800 Detector Input Module T=1334; P= 25; DIM A= 26;B= 26; Supply=198 DIM A=xxx;B=yyy; Supply=zzz.
MX4428 MXP Engineering /Technical Manual MXP Diagnostic Terminal 8.1.6 ANALOG LOOP DIAGNOSTICS 8.1.6.1 TC Command (Total Counts) Document: LT0273 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.
Document: LT0273 8.1.6.4 MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal 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. Thus it can be used to find what devices are present on the loop and which devices are found from each end, if the loop is broken or isolator bases have opened.
MX4428 MXP Engineering /Technical Manual MXP Diagnostic Terminal Document: LT0273 >>ca 20 100 Re-address device 20 to 100 ?y Verify OK The MX4428 configuration is not altered by this command. If there is no device with the old address, or if there is already a device with the new address, an error message will be displayed and the change will not be made. Normal polling resumes when the command is completed. 8.1.7 ADVANCED COMMANDS The following commands are available for specialised purposes.
Document: LT0273 DP r DR r GH r GT r RH r p RT r p MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal 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. Display the results from the last DP command on responder r. (Use this command at least 30 seconds after a DP command.
MX4428 MXP Engineering /Technical Manual MXP Diagnostic Terminal 8.2 Document: LT0273 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. 8.2.1 FILES REQUIRED The following files will be supplied for a Flash software version update – MXP.MXP Flash contents in special format FLASHPGM.S19 Flash programming program to run in MXP MXPPROG.
Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Diagnostic Terminal 4 : Flash Information 1 Erasing, wait Erase OK 1 : Erase Entire Flash (all unprotected blocks) 3 : Load MXR Binary File and Program into Flash 4 : Flash Information 3 FlashPgm : Waiting for load 0134d0 bytes 000000 001000 002000 003000 004000 005000 006000 007000 008000 009000 00a000 00b000 00c000 00d000 00e000 00f000 010000 011000 012000 013000 Loaded Checksum is correct Done, Switch MXP DIP switches normal, remove FLASH W
MX4428 MXP Engineering /Technical Manual MXP Diagnostic Terminal Document: LT0273 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 ...” line should be visible and will enable you to verify the new version. If necessary type ST to see the version.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing CHAPTER 9 DEVICE PROCESSING Issue 1.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 9.1 Document: LT0273 EXPONENTIAL FILTER An “exponential filter” is used to smooth values received from all detector types and remove “noise”. Value IN OUT Time This is a kind of moving average of recent samples, with the most recent samples given the most weighting. The output of the filter will exponentially approach the input (like an electronic RC filter). OUTn = OUTn-1 + (IN - OUTn-1) / FD. FD is the filter divisor.
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 - OUTn-1 IF ADJ > SL THEN ADJ = SL IF ADJ < -SL THEN ADJ = -SL OUTn = OUTn-1 + ADJ SL is the step limit for each sample period. The smaller SL the slower the filter. Issue 1.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 9.3 Document: LT0273 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. This gives the closest temperature for each reading.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing PreAlarm Threshold Comparator Fixed Temp PreAlarm + Exponential Filter Slope Limiter Raw°C Raw Reading Table Lookup Alarm Threshold CV SLV FD1 Slower Exponential Filter SL1 Subtractor ROR PreAlarm Threshold Comparator Fixed Temp Alarm + Comparator Slope Limiter Multiplier + - ROR PreAlarm + RORCV (°C/min) FD2 ROR Alarm Threshold RORSLV Comparator + ROR Alarm SL2 PollsPerMinute FD2-FD1 Figure 9.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 9.4 Document: LT0273 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.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing Enhancement Multiplier 3 Multiplier 2.5 2 Param=12 1.5 Param=6 1 0.5 0 0 5 10 15 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. The internals of that module are beyond the scope of this manual.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 9.5 Document: LT0273 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. 9.5.2 “ENHANCEMENT” Figure 9.3 shows the amount by which CO readings are increased depending on the temperature rate of rise.
Document: LT0273 9.6 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 – 255. (Note that TEPG literature refers to the sum of the two inputs.) The processing is shown in Figure 9.6.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 9.
Document: LT0273 MX4428 MXP Engineering / Technical Manual Device Processing These are designed for the following configurations– Device MIM800 CIM800 MIM801 Mode N/O N/O N/C N/O N/O N/C Contact R Not used 100Ω Not used 100Ω EOL R 200Ω 200Ω 200Ω 200Ω 200Ω 200Ω Max Wiring R 50Ω 10Ω 50Ω 50Ω 10Ω 50Ω Parameters for alternative contact and EOL resistors could be derived from the graphs in Figure 9.7. 9.7.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 9.8 Document: LT0273 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. Three lines are shown for three supply voltages.
Document: LT0273 9.8.4 MX4428 MXP Engineering / Technical Manual Device Processing 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. 9.9 RIM PROCESSING 9.9.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board Document: LT0273 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. 9.11 LPS PROCESSING 9.11.
Document: LT0273 9.13 MX4428 MXP Engineering / Technical Manual Device Processing 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). The MXP change results in • Heat and smoke being consistent with each other.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 9.17 Document: LT0273 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” for about 10 seconds, and then sampling starts again from the beginning. 9.18 COMMISSION MODE Filtering is speeded up or bypassed. AVF is bypassed. 9.
Document: LT0273 Fast System Point test. Test Auto test with test fire Yes on smoke / CO (Alarm result simulated on 8xxH No ie Heat only detector and on ancillary input modules) Switches to SmartSense 2 on Smoke / CO 1 (bypassed) As cfgd on heat None None Bypassed Bypassed As cfgd on DIM.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 9.23 9.23.1 Document: LT0273 RESET 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. However increases in input values will be filtered as usual.
Document: LT0273 9.24 MX4428 MXP Engineering / Technical Manual Device Processing 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. • If fault bit was received, use HEALTH command to verify that fault was caused by powerup. • Use READEE command to check type.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 9.25 Document: LT0273 SOFTWARE VERSIONS The following software versions have been released for general use. Version 1.03 1.04 (Limited Release) 1.05 (Limited Release) 1.06 1.07 1.09 1.10 1.11 1.12 Page 9-20 Features First full release Fixed failure of photo self test when using fuzzy logic with some detectors. Fixed standalone mode did not work if no valid database.
Document: LT0273 MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board CHAPTER 10 MXP LOOP FILTER BOARD Issue 1.
MX4428 MXP Engineering / Technical Manual MXP Loop Filter Board 10.1 Document: LT0273 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” (part number PA1038) is now available and it can easily be fitted to an MXP in order to remove the interference and restore normal operation. One or more of the following symptoms may be evident – 1.
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 – it will help if you rotate each standoff so that its plastic latch is pointing away from the edge of the board. Once the board is inserted you can straighten the standoffs before tightening the screws on the MXP loop wiring terminals.
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