2N Access Unit QR, User Manual, Page: 107 / 128

Table 1. Specimen configuration consumption computation
Module Maximum consumption [W] Maximum consumption [W]
Main unit with camera 2,36 11,57
13.56 MHz RFID card reader 0,44 0,82
I/O 0,31 0,65
Touch display 1,16 2,02
Tamper Switch 0,31 0,65
Wiegand 0,46 0,46
Bluetooth reader 0,2 0,67
Total
2,41
5,24
7,93
16,84
It is obvious from the specimen configuration that all the modules have sufficient outputs when an external
power supply is used. When a PoE supply is used, the power output is insufficient for all the modules,
which results in automatic decrease in the backlight level, active output current supply, volume level and LED
intensity.
Some modules need a specific power output for their specific activities: the I/O module, e.g., requires 0.13 W
for relay activation (not included in the minimum consumption).
Module Specifications
Keypad Module
The Keypad module (Part No. 9155031/9155031B ) is used for numeric access to the system.
Features
• The module contains two bus connectors for the 2N Access Unit QR bus.
• These two connectors are fully interchangeable and can be used either as inputs from the main unit or
outputs to other modules.
• If this module is the last one on the bus, one of the connectors remains unconnected.
• The module package includes a 220 mm long interconnecting cable.
Installation
107