Cardax Prox Mifare Series 설치 참고 사항 - 페이지 2

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Cardax Prox Mifare Series에 대해서도 마찬가지입니다: 설치 참고 사항 (19 페이지)

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Power Supply Requirements

Power for the Prox Mifare Series (Teardrop) reader is usually taken from the

incoming supply of the device to which it is connected. That is, from the:

• Cardax FT Controller 3000-4R

• Cardax FT Controller 3000

• Cardax FT GBUS Universal Reader Interface (Cardax FT GBUS URI)

The supply at the reader should be 13.6 Vdc ± 15% (between 11.5 and 15.6

volts) It is recommended that the voltage should be between 12 and 15 volts to

allow for local installation and environmental conditions, to ensure reliable

operation.

The power source for Prox Mifare Series (Teardrop) readers should only be

linear or good quality switched mode power supplies. The performance of the

reader may be affected by a low quality, noisy power supply.

Cabling

The Prox Mifare Series (Teardrop) reader uses the Cardax IV communications

system. The reader cable entry grommet is designed to accept 4 core, 0.2mm

(24 AWG) cable. This cable has an outside diameter of 5mm (1/5 inch). A

short tail of this cable is supplied with connector fitted, with each reader.

When using a single cable to carry both power supply and data from the source

to the reader, both the power supply voltage drop and data requirements must

be considered. The cable uses two wires for data and two wires for power

supply.

Power: The conductor size should be sufficient to ensure that the voltage at the

Data: The capacitance between any conductors or any conductors and the

It is recommended that the distance between the control unit and the reader

should not exceed 200m (600ft).

Choosing a cable

The cable chart below lists cable sizes and the maximum length for connecting

a single Prox Mifare Series (Teardrop) reader to a Controller and power

supply.

Cable type

CAT 5 **

4 x 0.2mm

4 x 0.5mm

4 x 1mm

* These distances apply to unshielded cable. If shielded cable is used, the

distances will be reduced due to the increased capacitance caused by the

shielding.

reader terminals is not less that 12 Vdc.

shield should not exceed a total of 24nF for the entire cable. A twisted

pair is recommended for the data circuit.

(4 x 24 AWG)

(4 x 20 AWG)

(4 x 18 AWG)

Maximum distance *

40m (130 ft)

100m (330 ft)

200m (660 ft)

Part number 3E1100 R16

July 2010