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3E4237 Gallagher T15 Reader | Edition 11 | February 2022
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
better**
4 twisted pair each 2 x
0.2 mm
2
(24 AWG)
500 m (1640 ft) 200 m (650 ft)
100 m (330 ft)
BELDEN
9842**
(shielded)
2 twisted pair each 2 x
0.2 mm
2
(24 AWG)
500 m (1640 ft) 200 m (650 ft)
100 m (330 ft)
SEC472
4 x 0.2 mm
2
Not
twisted pairs (24 AWG)
400 m (1310 ft) 200 m (650 ft)
100 m (330 ft)
SEC4142
4 x 0.4 mm
2
Not
twisted pairs (21 AWG)
400 m (1310 ft) 200 m (650 ft)
150 m (500 ft)
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 ft) 200 m (650 ft)
450 m (1490 ft)
* The matching of wire sizes to equivalent wire gauges are only approximate.
** Recommended cable types for optimal HBUS RS485 performance.
*** Not applicable for PIV or Bluetooth® enabled reader installations.
**** 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, operating 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
13.6 Vdc to function 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 separating any two proximity readers must not be less than 200 mm (8 in) in all directions.
When mounting a proximity reader on an internal wall, check that any reader fixed to the other side of
the wall is not less than 200 mm (8 inches) away.
200 mm
200 mm
