User's Guide

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14.3 Connecting Digital Inputs and Outputs of the
RRU4xxx,ARU3xxx,ARU2400andARU8500
Readers via the Connection Box
In addition to the direct connection of the readers (see Connecting Digital Inputs and Outputs of the
RRU 4xxx, ARU 3xxx and ARU 8500 Readers Directly, p.51 and Connecting Digital Inputs and Outputs of the ARU
2400 Reader Directly, p.54 ), it is possible to connect the readers using the connection boxes basis and acvanced.
This connection type is recommended for connecting the readers in the outdoor applications or if there is a dened
connection point. The objective of this connection point is to create a control panel for wiring all devices connected to
the digital inputs and outputs of the reader and to provide a dened switch-o posibility for the DC supply of the reader.
14.3.1 Safety Instructions
WARNING
Danger to life from electric shock! Fire hazard!
Improper interventions in the device may jeopardise its electrical safety. Unauthorized changes to
the unit and the use of spare parts and peripheral devices which are not sold or recommended by
the manufacturer can result in re, electric shock and injuries.
The manufacturer accepts no liability for accidents caused by the user opening or changing the
device.
► Make sure that the connection of the area marked in ① in
carried out by properly qualied and
trained sta.
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Fig. 31: Connection box, connections