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Document: LT0273 MX4428 MXP Engineering / Technical Manual
Device Information and Programming
Issue 1.5 24 March 2006 Page 3-13
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. They are valid only for the tests done in the SSL smoke room.
3.5 DEVICE INSTALLATION
3.5.1 PRECAUTIONS
Observe ESD precautions when installing an MXP responder, or connecting any devices to
it. Refer to Product Bulletin PBG0025.
3.5.2 MOUNTING
Detector Bases
Detectors attach to a circular, plastic base which has holes for screw mounting to a flat
surface, and screw terminals for connecting the loop wiring. There are various different
bases available. Most of the bases may only be mounted as just described, but the 814SB
sounder base and the 814RB relay base may be mounted as just described, or may
themselves be plugged into one of the other bases, to interpose between it and the detector.
Modules
The Modules are normally mounted within the enclosure of the equipment to which they
connect, or in a cabinet, junction box or switch box. They may be mounted on plastic
standoffs (4 x HW0130 required) on a gearplate or cabinet, or to a face plate that mounts on
a double flush or surface box. A hole may be required for the on-board LED. A standard
plate with a hole for the LED and three holes for the Service Tool is available (Ancillary
Cover M520). This fits a plastic surface box K2142.
The MIM800/801 is smaller than the other modules, and is supplied in a plastic housing
which has a lug for screw mounting.
3.5.3 ADDRESS & LED BLINK PROGRAMMING
Addresses for MX detectors and modules, and options such as LED blink on poll, are most
easily set using the MX Service Tool. These are set by placing the detector onto the Service
Tool, or connecting the module to the Service Tool with the supplied interface lead, and
programming as per the MX Service Tool Instructions. (Be careful not to leave the pins in the
module when removing the lead).
For all input devices, including detectors, the LED turns on steady when in alarm. For output
devices (RIM800, etc) the LED turns on when the device is activated (if Global Blink Mode is
enabled for the MXP). To enable a device’s LED to blink on poll, the MXP must have Global
Blink Mode enabled at the MX4428 panel, and the device must have LED Blink enabled.
For a mixed system, i.e. some devices are to blink on poll and some are not, then turn off
blink on those devices that are not to blink using the Service Tool, and enable Global Blink
Mode at the MX4428 panel for the MXP.