2N 9160341, Installation Manual, Page: 78 / 107

2N Access Unit Installation Manual
78 / 107
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2.4 Extending Module Connection
2N Access Unit allows to connect following extending modules:
5 Buttons
Keypad
Touch Keypad
Touch Display
125 kHz RFID Card Reader
13.56 MHz RFID Card Reader
13.56 MHz RFID Card Reader, NFC support
Bluetooth & RFID Reader 125 kHz, 13.56 MHz, NFC
Bluetooth & RFID Reader 125 kHz, secured 13.56 MHz, NFC
Touch Keypad & RFID Reader 125 kHz, 13.56 MHz, NFC
Touch Keypad & RFID Reader 125 kHz, secured 13.56 MHz, NFC
Bluetooth Reader
Fingerprint Reader
I/O Module
Infopanel
Wiegand
Security Relay
Module Bus Interconnection
All the modules that can be connected to 2N Access Unit are interconnected via a bus. The bus
starts on the basic unit and goes over all the modules. The order of modules on the bus is
irrelevant. And it also irrelevant which bus connector on the module is used as the input and
which is used as the output.
The modules include a 220 mm long bus interconnecting cable; Part No. 9155037 Wiegand
modules and Part No. 9155034 I/O modules include an 80 mm long bus cable. These two
modules can be hidden inside one of the modules described below (Infopanel, Keypad, RFID
card reader, Bluetooth) and/or placed freely behind a standalone access unit (in a mounting
box, e.g.).
It is possible to order separate bus cables of the lengths of 1 m, 3 m, or 5 m ( Part
Nos. 9155050/9155054/9155055 ), which are designed for remote 2N Access Unit module
installations. Typically, they are used for an RFID card reader mounted on a wall opposite to
the 2N Access Unit installation. The cable may be used only once on the bus. In extensive
installations, the total bus cable length may not exceed 7 m.
Module Power Supply
All the modules connected to 2N Access Unit , except for the Tamper Switch, are powered from
the bus. The available bus power output depends on the power supply type. The basic unit can
use a 2 A power supply to increase the bus power available to the modules connected.