Datalogic GWY-01-PBS-01 Especificações descarregar pdf (Página 22)

GWY-01-DNT-01 MANUAL – REV. 02 CHAPTER 2:

GATEWAY OVERVIEW

PAGE 22 OF 67

XAMPLE

For a Subnet16 Gateway network with eight C0405-485 RFID Controllers:

Total Current Required

= [0.120A + (0.100A X 8)] x 1.1 =

1.012A

2.4.3 Cable Voltage Drop

In addition, each RFID controller on the Subnet will experience a certain amount of

voltage drop depending on the length of the cable.

ABLE

ESISTANCE PER

ETER

 ThinNet = .05413 ohms per meter

 ThickNet = .0105 ohms per meter

ALCULATING

OLTAGE

ROP

Voltage Drop

= [(Max Controller Current

Number of Controllers)

(Cable

Resistance per Meter

Cable Length in Meters)]

XAMPLE

For a ThinNet network with eight C0405-485 RFID Controllers at a cable length of 20

meters:

Voltage Drop = (0.100A x 8) X (.05413 X 20) = 0.866VDC

It is recommended that the voltage drop calculation be conducted on the RFID

controller that is farthest from the Gateway, as it will experience the greatest voltage

drop.

URRENT

ATING FOR

ABLES

 ThinNet Cable Current Rating = 6.4A

 ThickNet Cable Current Rating = 17.6A (power and ground); 13.6A (data)

 12mm Connector Current Rating = 3A

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