
MX4428 MXP Engineering / Technical Manual
Document: LT0273
Device Information and Programming
Page 3-16
24 March 2006
Issue 1.5
Parameter Description
Default
Value Heat
Type
4
A/C – rate of rise enabled.
Mode
5
B/D – rate of rise disabled
4
P0
Heat fixed temperature pre-alarm threshold
°
C 56
(
°
C)
Heat fixed temperature alarm threshold
°
C
57 New
Zealand
63
Australian Types A / B
P1
93
Australian Types C / D
63 (
°
C)
b3:b0
ROR Pre alarm Threshold
7 (12
°
C/min)
P4
b7:b4
ROR Alarm Threshold
5 gives the
Threshold in
°
C/min
9 (14
°
C/min)
P5
Enhancement multiplier (default 12) * 16 plus code below
Code Functional
Base
Control
Remote LED
Control
Final value
with default
enh multiplier
0
Circuit Alarm
Circuit Alarm
192
1 Circuit
Alarm Relay
193
2
Circuit Alarm
Point Alarm
194
4 Relay
Circuit
Alarm
196
5 Relay
Relay
197
6 Relay
Point
Alarm
198
8
Point Alarm
Circuit Alarm
200
9 Point
Alarm Relay
201
P6
10
Point Alarm
Point Alarm
202
192
Note – enhancement multiplier is unused for individual 814H detector settings, but must be
retained in MX4428 default settings, as the same defaults are used for the 814H and
814PH.
The following global parameters, which may be set at the MX4428, affect all applicable
points on all MXPs.
MX4428 Reference
Description
Default
8XX HEAT FD1
Heat FD1 (CV Filter)
4
8XX HEAT FD2
Heat FD2 (ROR determination)
7
8XX HEAT SL1
Heat SL1 (Fixed temp step limit,
°
C/5sec)
2
8XX HEAT SL2
Heat SL2 (ROR step limit,
°
C/min/5sec)
3