Filter
Top Products
F3200 Installation & Programming Manual Document No: LT0122
New Zealand Operation
Page 12-10 5 July 2001 Issue 2.7
12.8 INSTALLATION : NZ DISPLAY EXTENDER BOARD
& BRIGADE DISPLAYS
12.8.1 GENERAL
An NDU is not normally used as a brigade connection point. If an NDU is used as a brigade
connection point then, in general, a separate display panel must be provided if there needs
to be zone alarm indication to the attending Fire Brigade staff. The common MAF status
display is provided by mounting an NZ Display Extender Board (PA0499 or PA0762), in the
NDU cabinet and wiring to display in a separate cabinet in one of three different ways as
shown in Fig 12.8.1, 12.8.2, and 12.8.3.
Sixteen-zone display boards are not normally connected to an NDU, but the three diagrams
show how they can be connected if necessary. An NDU allows a maximum of four 16-zone
display boards and each individual LED (48 LEDs per board) must be controlled using output
logic which is generally too cumbersome for normal use.
The second cabinet is necessary because the LEDs mounted inside the NDU cabinet do not
meet the requirements of NZ4512 with regard to visibility and viewing access. An NLDU
(Network LED Display Unit), can often be used to more conveniently drive 16-zone display
boards and show individual zone information as part of the brigade mimic display.
Any Ancillary Control Zone indicators on this external display must be coloured differently or
be segregated from the zone alarm and common indicators, and be clearly labelled.
There are several methods for providing a separate display panel. Two approaches are
detailed below.
NOTE 1: The information provided here is very similar to the information in the RDU
installation manual LT0148 which may be useful to refer to.
NOTE 2: As stated above, 16 zone display boards are not normally connected to an
NDU, nevertheless, the following sections describe how to do it if necessary.
If an NLDU is used to drive 16 zone display boards, then the NLDU user
manual LT0188 must also be referred to.
12.8.2 MIMIC DISPLAY
A mimic display uses the mimic outputs from the NDU’s internal 16 Zone LED Indicator
Boards to drive alarm LEDs in an external display. Each group of 16 zone alarms and the
common indicators are extended in a separate 26 way FRC to the external display.
The number of FRCs between the NDU and the external display limit the practical separation
distance. Since the cabling is not supervised in any way, the Fire Service or approving
authority may place restrictions on this distance. The cable must be well protected
mechanically by conduit, trunking or equivalent.
These parts are available for constructing displays of this type:
FP0475 FP,16 ZONE LED DISPLAY EXTENDER KIT (C/W LOOM)
FZ3031 16 ZONE LED DISPLAY EXTENDER KIT, RHS POSITION
LM0044 LOOM, DISPLAY EXTENDER FRC,2M,26 WAY
LM0045 LOOM, DISPLAY EXTENDER FRC,5M,26 WAY
(Longer and 3-way looms can be made to special order)