Gallagher T11 Note d'installation - Page 2
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Gallagher T11 Reader
Before you begin
Shipment Contents
Check the shipment contains the following items:
•
1 x Gallagher T11 Reader facia assembly
•
1 x Gallagher T11 Reader base
•
1 x M3 Torx Post Security screw
•
2 x 6-32 UNC Phillips drive fi xing screws
•
4 x 25 mm No.6 self tapping, pan head, Phillips drive fi xing screws
•
4 x 40 mm No.6 self tapping, pan head, Phillips drive fi xing screws
Power Supply
The Gallagher T11 Reader is designed to operate over a supply voltage range
of 9 - 16 Vdc measured at the reader terminals. The opera ng current draw is
dependant on the supply voltage at the reader. For the Mifare reader at 12 Vdc the
current draw is 90 mA (standby). During card read, beeper and LED ac vity, the
current will momentarily reach 125 mA (peak). For the Mul Tech reader at 12 Vdc
the current draw is 90 mA (standby) and will momentarily reach 140 mA (peak).
The power source should be linear or a good quality switched-mode power supply.
The performance of the reader may be aff ected by a low quality, noisy power supply.
Cabling
The Gallagher T11 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 specifi ed to operate at 9 Vdc, for good
engineering design it is recommended that the voltage at the reader should be
approximately 12 Vdc.
Examples of approved cables for connec ng a single Gallagher T11 Reader to a
Controller and power supply, showing maximum cable lengths for each type of cable
and the associated circuits are:
Manufacturer
reference
CAT5E
SEC472
SEC4142
BELDEN 8723
BELDEN 9842
Page 2
Cable format*
4 twisted pair
2
Each 2 x 0.2 mm
(24 AWG)
4 x 0.2 mm
2
Not twisted pairs (24 AWG)
4 x 0.4 mm
2
Not twisted pairs (21 AWG)
2 twisted pair
Each 2 x 0.4 mm
2
(22 AWG)
2 twisted pair
Each 2 x 0.2 mm
2
(24 AWG)
Combined
power and data
Data only in a
in a single cable
single cable
100 m (330 )
300 m (1000 )
100 m (330 )
250 m (800 )
150 m (500 )
150 m (500 )
100 m (330 )
150 m (500 )
100 m (330 )
200 m (650 )
Edi on 10 | Part Number: 3E2513
Installa on Note
November 2012