Cables - Honeywell 13270-01LB Data, Installation And Commissioning Manual

Cables

Common Fire and fault
The common fire output is a
normally open electronic switch
that closes with a fire condition.
The common fault output is a
normally closed electronic switch,
which opens with a fault condition,
this is for a fail safe operation.
Each electronic switch is current
limited, see specification.
Use a relay to provide volt free
contacts.
The +24V & 0V is a power supply
for use with auxiliary contacts,
common fire and common fault
circuits, see specification.
Repeat Panel
A Repeat panel can be connected
in series to the control panel. A
repeat panel duplicates fire and
fault indications together with
system controls.
Cables
The guidance of
BS5839:Part 1:2002 + A2:2008,
should be followed.
Generally available electrical
installation cable may be used,
providing the cable is:
q to BS6387
q with no more than 2 - cores
Length per circuit Type of circuit
2m Mains power supply cord
1Km Zone circuit
1Km Sounder circuits
100m Auxiliary circuit
100m Common fire and fault circuit
100m Class change circuit
500m total circuit Repeat panel link
Figure 6 Fire
fault & 24V
outputs
Current limited
Normally closed
electronic switch
Figure 7 Control
to repeat panel
connections
q each core having no less than
2
1.5mm cross section area
2
(maximum 2.5mm ).
q with an inherent or through
metal conduit screen for earth
continuity in order to produce
electrical protection and
screening.
q having protection from heat and
mechanical damage.
Recommended cables, also see BS5839:Part 1 guidance
see power supply cord
See BS5839:Part 1:2002 + A2:2008 for guidance
Belden type -screened 2-core twisted pair
4
CFT
24+
CFR
Current limited
Normally open
electronic switch
0V
Control panel
Screen must be
connected to panel
R+ R-
Control panel
Power supply cord
The mains supply to the panel
should be wired in 0.75mm
with a effective connection to
building service earth continuity
conductor.
Fire Panels
The Indicator and Relay
shown connected here
are typical examples
of external circuit
NOTE: The maximum 24V
relay load is 280mW (Common
Fire) and 500mW (Common Fault).
Use a relay to
provide volt free contacts.
24V+ - 24V+ supply
0V
CFT - Common fault
CFR - Common fire
0V - 0V supply
R+ R-
Repeat panel
2
4188-424 issue 4_Part 1_10-09
cable