CIAS Elettronica S.r.l.
Ed. 1.3
Installation Manual
Page
54
of
78
PYTHAGORAS 3
10.2 Connection to Power Supply
The units must be powered by direct current at a nominal voltage of 13,8 V
, using the MS5
connector on the transmitter and receiver interface circuit.
The connection between the power supply and the device must have adequate dimensions,
calculating the cross-section based on the length of the connection and the current
consumption of the devices. When the connection is very long it is recommended to use a
supplementary power supply.
A table is reported below indicating the length of the conductors based on the minimum section
implemented. The conductors must be shielded and braided type.
Section of
wires
[mm
2
]
Wires length [m]
Wires length [m]
PYTHAGORAS3 100
PYTHAGORAS3 160
Tx
Rx
Tx
Rx
1
130
70
125
65
1,5
200
100
190
95
2,5
340
170
320
160
4
540
270
500
260
On the table, values calculated for configuration 1 MW + 2 IR, without heaters
Note:
When using the same cable to power several Pythagoras3 barriers the distances
indicated must be divided by the number of barriers connected.
10.2.1
Connection to the Power Supply for Heating
The power supply concerning the heating system must be realised through a separate line
other than that used for the module. Connect the power line directly to the terminal block of
each IR Module to the pin named "HEATER". The voltage must be between 10,5 and 28 Vdc.
Details to assembly the heater to IR Module, are below:
Содержание PYTHAGORAS3
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