Fermax AC-MAX Installationshandbuch Seite 41

Cod. 970073 V12_20
Door control
The expander enables distribution of power and RS485 communication bus to two doors. For each door the
EXP2D/4D offers 1.0A power supply output (VDR+ and VDR- terminals), 0.2A power supply output (TML+
and TML- terminals), communication bus (RS485 A and B terminals), two programmable inputs (DC and
DR) and two programmable outputs (LCK and BELL). The 1.0A output is dedicated to supply door lock and
door related devices (e.g. alarm signalling device). The 0.2A output is dedicated to supply readers. Short
circuit at any power supply output or RS485 bus does not affect other outputs. In the figure below a typical
read-in/read-out door control scenario with EXP2D/4D expander is presented. The door system is supplied
from the expander and it includes:
•
2 x AC-MAXxx readers (RS485)
•
12Vdc door lock
•
12Vdc alarm signalling device BELL
•
Door contact DC
•
Exit button DR
Door 1
Wiegand
reader
Fig. 14 Connection door lock, bell, door contact and exit pushbutton. Both wiegand readers and
FPAC-MAX readers (RS485)
Connection of expander to central
In the figure below not only central but also doors are supplied from the expander we also see how the
battery is connected (optional) to the expander itself. EXP2D/EXP4D.
kit power supply, if consume more than 100mA individually
* This reader feeds directly from the kit power supply.
Door 1/Door 2
Door 1
2x FPAC-MAX
RS485
* These readers feed directly from the
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