Cabling Installation Notes; Introduction; Quality Of Cable And Of Cable Installation - Honeywell Notifier ID50 Installation, Commissioning & Configuration Manual

ID50 Series Panel - Installation, Commissioning & Configuration Manual

3.2 Cabling Installation Notes

3.2.1 Introduction

The following notes are intended to assist installers of
analogue addressable control systems. They have been
produced from information derived from the supplier's
technical resource and from information fed back
concerning existing systems.

3.2.2 Quality of Cable and of Cable Installation

It is vitally important that good quality cable is used, and
that correct installation techniques are followed. In general,
the following cable installation requirements must be met:
a. All cable sections must be circular to allow effective
cable clamping using the cable glands.
b. The cable must be screened (sheathed) to provide
protection against Radio Frequency Interference (RFI)
and the screen must be connected to earth at the
control panel.
c. Multiple earthing of the screen should be avoided.
NOTIFIER's field products use insulated mounting
bases and back boxes to achieve this. We recommend
that this practice be continued if other connections are
made. To achieve this with MICC cable may require
the use of insulated cable glands at one end of the cable.
d. The screen must be continuous throughout the loop.
e. The maximum resistance of the loop should not
exceed 40 ohms. You may check this by joining the
return legs IN+ and IN- together and measuring across
the start legs OUT+ to OUT-. Also the cable
capacitance should be less than 0.5μF. Typically this
will allow a maximum loop length of 2000m of screened
1.5mm cable. Cable recommended for use is MICC
2
with a LSF PVC overcovering, a fire-resilient cable to
BS7629 or PVC/SWA/PVC to BS6387.
Recommended Cables:
Manufacturer Product Name
AEI
AEI Firetech
Draka FiretufPlus
Draka
Pirelli FP Plus
Pirelli FP200 Gold
Arrow
1 For a definition of 'Standard' and 'Enhanced' cable requirements and their different
applications, refer to BS 5839-1 Section 26. Enhanced cable is typically required
for spur sounder outputs, while standard cables may be adequate for other fire-
related I/O provided there is diverse cable routing. The multi-core cable from Arrow
is suitable for RS232 connections to a printer.
f. We recommend that the system should be wired in
2-core cables and each 2-core cable should be specific
to one function.
g. The RS485 communication cable used should be rated
as suitable for up to 200mA in a short circuit condition.
21
Part Number
MICC 2L1.5
298-052
FTPLUS2E1.5RD
Firetuf FTZ2E1.5
FP Plus 2x1.5 Red
FP200 Gold 2x1.5 Red
- 7-2-4S
997-263-000-11, Issue 11
January 2010
Type
1
Enhanced
Standard
Enhanced
Standard
Enhanced
Standard
Not rated