
MX4428 MXP Engineering / Technical Manual
Document: LT0273
Introduction
Page 1-4
24 March 2006
Issue 1.5
1.4
TERMINOLOGY
AAR Analogue
Addressable
Responder.
AC Alternating
Current.
ACZ
Ancillary Control Zone.
ADR
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.
ARR
Advanced Relay (and Detector) Responder, which is an ADR
fitted with an RRM.
AVF
Alarm Verification Facility, or alarm check.
AZF
Alarm Zone Facility, previously referred to as "GROUP".
CO Carbon
Monoxide
CV
Current Value (Filtered reading from detector)
DC Direct
Current.
Detector
Addressable device used to detect fires that interfaces to the
MXP via the Analogue Loop. It contains one or more sensors.
EOL
End of Line device.
Evacuation Device
Sounder for warning of evacuation.
FIP
Fire Indicator Panel, as defined by standards.
GLOBAL
A function that may affect more than one zone.
HH
History High - the highest value a variable has reached
HL
History Low - the lowest value a variable has reached.
LCD
Liquid Crystal Display (usually alphanumeric)
LED
Light Emitting Diode (Visual Indicator).
MAF
FIP Master Alarm Facility.
MIC X
Measure of smoke density used with ionisation smoke
detectors.
MPR
Multi Protocol Responder.
MXP
MX Protocol Responder
MCP
Manual Call Point (break glass switch).
Module
Addressable I/O device that interfaces to the MXP via the
Analogue Loop.
NA Not
Applicable.
NC Normally
Closed.
NLR
Number of logical responders.
NO Normally
Open.
PCB
Printed Circuit Board.
Point
Any addressable device (detector or module) with a unique
address that is connected to the analogue addressable loop.
PSU
Power Supply Unit.
Responder
A general term for all responder types, e.g. ADR, ARR, MPR,
MXP, AAR and IOR that may be connected to the MX4428
Loop.
Responder Loop
A 4 core cable for communication and power to all responders
connected to an MX4428 FIP.
ROR
Rate of Rise.
RF Radio
Frequency.
RRM
Responder Relay Module.
RZDU
Remote Zone Display Unit.
Sensor
Part of a detector which senses the environment - smoke or
temperature or CO.
SLV
Step limited (or slope limited) value.
Zone
Fire searchable area of Building.