2N Access Unit - Page 98

982N TELEKOMUNIKACE a.s., www.2n.cz
®
Module Power Supply
Except for the Tamper Switch, all the modules are powered from2N
®
Access Unit
the bus. The available bus power output depends on the power supply type. Basic units
571v3 and higher can use a 3A power supply to increase the bus power available for
the modules connected.
Power supply Specification Available power output
External supply 12 V ±15% / 2 A (3 A) 24 W (36 W)
PoE 802.3af (Class 0 – 12.95 W) 12 W
Combined External supply + PoE 30 W (42 W)
The count of modules on the bus is limited by the available power supply output. The
maximum count of the modules on the bus is 30.
Basic unit
(571v3)
Consumption [W]
(Maximum value)
At relax 1.2
OUT 1 4.8
Total 6
Module
Idle
consumption
[W]
(Minimum
value)
Full load [ ]W
(Maximum
value)
Special
[ ]elements W
Basic unit (571v3) 1.2 6
Infopanel (version 2) 0.17 0.64
Keypad module (579v2) 0.20 1.55
RFID card reader, 125 kHz
(584v2)
RFID card reader, 13.56 MHz
(583v2)
0.42 0.89
I/O module (577v2) 0.35 0.66 Closed relay 0.13
5-button module (578v2) 0.15 0.98
Electronic buttons
Wiegand module (581v1)
Tamper switch 0 0
Specimen configuration consumption computation:
Module
Minimum consumption
[W]
Maximum consumption
[W]
Basic unit 1.2 6
RFID card reader, 13.56 MHz
(583v2)
0.42 0.89
I/O module (577v2) 0.35 0.66
Tamper switch 0 0
5-button module (578v2) 0.15 0.98
5-button module (578v2) 0.15 0.98
Tamper switch 0 0
Wiegand module (581v1) x x
Total 2.27 9.51
It is obvious from the specimen configuration that all the modules have sufficient