User's Manual

Page 7
3E4234 Gallagher T21 PIV Reader | Edion 1 | August 2016
Copyright © Gallagher Group Limited
Cable distance
Cable type Cable format* Single reader
connected using
HBUS data only in a
single cable
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 ) 50 m (165 )
BELDEN 9842**
(shielded)
2 twisted pair
Each 2 x 0.2 mm
2
(24 AWG)
500 m (1640 ) 50 m (165 )
SEC472 4 x 0.2 mm
2
Not twisted pairs (24 AWG)
400 m (1310 ) 50 m (165 )
SEC4142 4 x 0.4 mm
2
Not twisted pairs (21 AWG)
400 m (1310 ) 100 m (330 )
* The matching of wire sizes to equivalent wire gauges are only approximate.
** Recommended cable types for opmal HBUS RS485 performance.
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.
• The recommendaon for opmal performance is up to 20 x T21 PIV Readers can be
connected to one Controller. Of these 20 readers, up to 4 could be congured for alarm
zone (or fence controller) management.
A reader is congured for alarm zone management when it has either Alarm Zones
congured on the Alarm Zones properes page or items congured upon its mimic panel.
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 xed to the other side of
the wall is not less than 200 mm (8 in) away.
200 mm
200 mm