MCX2D Operating Manual
12.11.2020
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Parametric resistors
The same values of parametric resistors are used for all inputs i.e. 1kΩ; 1,2kΩ; 1,5kΩ; 1,8kΩ; 2,2kΩ; 2,7kΩ;
3,3kΩ; 3,9kΩ; 4,7kΩ; 5,6kΩ; 6,8kΩ; 8,2kΩ; 10kΩ; 12kΩ. In case of 3EOL/DW (Double Wiring) input type,
Alarm A resistor defines a value of resistor used to detect triggering of the first input while Alarm B resistor
defines a value of resistor used to detect triggering of the second input. Alarm A resistor value must differ
from value of Alarm B resistor at least by three positions in the list above. Total resistance of wire used to
connect contacts to input should not exceed 100 Ω. Default values of parametric resistors:
Alarm A = 2,2 kΩ
Alarm B = 5,6 kΩ
Response time
Response time parameter defines minimal impulse time on the input which triggers the input. Each input can
be configured individually in range of 50 to 5000 ms within low level configuration (RogerVDM).
Transistor outputs
Expander offers LCK and BELL transistor outputs. Electric parameters such as polarity are configured within
low level configuration (RogerVDM). Function are assigned to outputs within high level configuration (VISO).
Multiple functions with different priorities can be assigned to the same output at the same time.
In standard scenario of door control, LCK outputs are dedicated to control door locks while BELL outputs
are dedicated to control alarm signalling devices and/or door bells. In standard scenario of operation both
LCK and BELL outputs do not require low level configuration.
Power supply outputs
Expander offers 6 outputs in order to provide power supply to access controller, terminals, door lock and
other external devices.
VDR outputs
VDR power supply output is dedicated to supply door lock, alarm signalling device and other door related
devices. The terminal VDR+ is protected with 1.0A electronic fuse. The terminal VDR- is internally shorted to
ground (GND). Green LED indicator is located at the VDR+ terminal to signal voltage at the output.
TML outputs
TML power supply output is dedicated to supply readers at door. The terminal TML+ is protected with 0.2A
electronic fuse . The terminal TML- is internally shorted to ground. Green LED indicator is located at the
TML+ terminal to signal voltage at the output.
VOUT output
VOUT power supply output is dedicated to supply additional electronic modules and it can be also used to
supply connected access controller. The terminal VOUT+ is protected with 0.2A electronic fuse . The
terminal VOUT- is internally shorted to ground. Green LED indicator is located at the VOUT+ terminal to
signal voltage at the output.
Note: If MC16 access controller is supplied from the expander then it cannot be at the same time supplied
by own PSU and it cannot operate with own backup battery.
AUX output
AUX power supply output is dedicated to supply optional electronic modules. The terminal AUX+ is
protected with 0.2A electronic fuse. The terminal AUX- is internally shorted to ground. Green LED indicator
is located at the AUX+ terminal to signal voltage at the output.
2.
I
NSTALLATION
Each expander is equipped with a holder for installation on DIN35 rail. Therefore expanders can be installed
in ME type enclosures equipped with such rail. Alternatively, expanders can also be mounted using screws
and holes on expander board. It is recommended to install the expander in the same enclosure as PSU. The
cross section of power supply wires must be adequate as to avoid voltage drop greater than 200mV for
rated load. It is recommended to use cables with minimal 1mm
2
cross section and maximal 30 cm length.
Such cables are offered with PSxD series power supply units.
