Installation Guide
MX1
Fire Alarm System (NZ)
LT0360 ISSUE 2.43
29 NOVEMBER 2017
PAGE 12
RZDU
Up to eight Remote Display Units or Alarm Display
Units (Nurse Station Annunciator or Compact FF)
can be connected to the RZDU interface on the
MX1
.
Other RZDU protocol devices (e.g. IO-NET or QE90
EWIS) can also be connected to the
MX1
via the
RZDU bus.
RZDU devices that are separately powered should not
be connected to the +VRZDU line, but must be
connected to the 0V line.
The
TXRZDU and RXRZDU signals must “cross-over”
between the
MX1
panel and the first RZDU device, as
shown in Figure 16. There must not be any wiring
crossover between subsequent RZDU devices.
Wiring between RZDU devices can be a daisy chain
or a star format.
The cable can be a single four core type or a pair of
twin core types.
M
X
1
C
O
N
T
R
O
L
L
E
R
RDU 2, Self
powered
RDU 1, Line Powered
TXRZDU
RXRZDU
0V
TXRZDU
RXRZDU
+V
0V
TXRZDU
RXRZDU
+V
0V
RXRZDU
0V
QE90
RDU 3, Line Powered
RX
0V
TX
VRZDU
Tx and Rx
crossover
between
Master and
first RDU
Figure 16
– Wiring to RZDU Devices
ZONE LED DISPLAYS
Rear Service Slimline Cabinet
MX1
is supplied with one zone LED display board
fitted on the gear plate in a rear service format, as
shown in Figure 16.
Figure 17
– Single Zone Display on gear plate
(Rear Service format)
A second zone display (part number FP1002) can be
fitted, as shown in Figure 17.
Note that the FRC loom from the LCD/keyboard on the
door must be moved from the first display board to the
second display board, and the second display board
connected to the first display board with the LM0291
FRC loom provided with the zone display kit (FP1002).
LM0291
Zone Display
Board 1 -
Common
Indicators
And
Zones 1-15
(FP1002)
LM0335
From LCD/
Keyboard
Zone Display
Board 2 -
Zones 18-31
(FP1002)
FR
O
M
P
R
EV
IO
U
S
T
O
N
EX
T
FR
O
M
P
R
EV
IO
U
S
T
O
N
EX
T
Figure 18
– Double Zone Displays on gear plate
(Rear Service format)
LM0335
From LCD/
Keyboard
Zone Display
Board 1
–
Common
Indicators
and
Zones 1-15
(FP1002)
FR
OM
P
R
E
V
IOU
S
TO
N
E
X
T