User's Manual

Page 5
3E4288 Gallagher T10 Reader | Edion 1 | August 2016
Copyright © Gallagher Group Limited
2.3 Cabling
The Gallagher T10 Reader requires a minimum cable size of 4 core 24 AWG (0.2 mm
2
) stranded
security cable. This cable allows the transmission of data (2 wires) and power (2 wires). When
using a single cable to carry both power supply and data, both the power supply voltage drop
and data requirements must be considered. Although the reader is specied to operate at 9
Vdc, for good engineering design it is recommended that the voltage at the reader should be
approximately 12 Vdc.
HBUScablingtopology
The HBUS communicaons protocol is based on the RS485 standard and allows the reader to
communicate over a distance of up to 500 m (1640 ).
The cabling between HBUS devices should be done in a "daisy chain" topology, (i.e. A "T" or
"Star" topology should not be used between devices). Should "Star" or "Home-Run" wiring be
required, the HBUS 4H/8H Modules and the HBUS Door Module allow mulple HBUS devices to
be individually wired to the one physical locaon.
The end devices on the HBUS cable should be terminated using 120 ohms resistance. To
terminate the Gallagher Controller 6000, connect the supplied on-board terminaon jumpers
to the Controller. To terminate a reader, connect the orange (terminaon) wire to the green
(HBUS A) wire. Terminaon is already included at the HBUS Module, (i.e. each HBUS port is
permanently terminated at the module).
Connect the on-board
terminaon jumper
Controller 6000
RS485 1
HBUS
Device
"T" or "Star" circuits are
not permied between
HBUS devices
HBUS
Device
Terminate
HBUS
Device
HBUS
Device
HBUS
Device
HBUS
Device
HBUS
Device
HBUS
Device
Terminate
Remove the on-board
terminaon jumper
RS485 1
"T" or "Star" circuits are
not permied between
HBUS devices
HBUS
Device
Terminate
HBUS
Device
Controller 6000