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3E4720 Gallagher T12 Reader | Edi on 12 | May 2023
Copyright © Gallagher Group Limited
Cable
distance
Cable type
Cable format*
HBUS
single reader
connected
using data
only in a single
cable
Cardax IV
single reader
connected
using data
only in a single
cable***
HBUS/Cardax IV
single reader
connected using
power and
data in a single
cable****
CAT 5e or
be er**
4 twisted pair each 2 x
0.2 mm
2
(24 AWG)
500 m (1640 )
200 m (650 )
100 m (330 )
BELDEN
9842**
(shielded)
2 twisted pair each 2 x
0.2 mm
2
(24 AWG)
500 m (1640 )
200 m (650 )
100 m (330 )
SEC472
4 x 0.2 mm
2
Not
twisted pairs (24 AWG)
400 m (1310 )
200 m (650 )
100 m (330 )
SEC4142
4 x 0.4 mm
2
Not
twisted pairs (21 AWG)
400 m (1310 )
200 m (650 )
150 m (500 )
C303900/
C303901
Gallagher
HBUS Cable
2 Twisted pair each 2
x 0.4 mm
2
(21 AWG,
Data) and 2 x 0.75 mm
2
Not Twisted Pair (~18
AWG, Power)
500 m (1640 )
200 m (650 )
450 m (1490 )
* The matching of wire sizes to equivalent wire gauges are only approximate.
** Recommended cable types for op mal HBUS RS485 performance.
*** Not applicable for Bluetooth® enabled reader installa ons.
**** Tested with 13.6V at start of cable.
Notes:
•
Shielded cable may reduce the obtainable cable length. Shielded cable should be
grounded at the Controller end only.
•
If other cable types are used, opera ng distances and performance may be reduced
depending on the cable quality.
•
HBUS allows up to 20 readers to be connected to a single cable. Each reader requires at
least 9 Vdc to func on correctly. The cable length and the number of readers connected
will have an impact on the voltage at each reader.
3
Distance between readers
The distance separa ng any two proximity readers must not be less than 200 mm (8 in) in all direc ons.
When moun ng a proximity reader on an internal wall, check that any reader
fi
xed to the other side of
the wall is not less than 200 mm (8 in) away.
200 mm
200 mm