Politec Srl | Manual MANA DT SMA + DT3
–
Ver 2.5.2
11
NB: in case of power failure the battery is disconnected to prevent its deterioration if its voltage drops
below 10,6V.
1
Power Connector circuit
TX or RX
Connect Flat Cable to the power connector of the board of MW TX or
MW RX
2
Battery
Connect with two-wire cable red / black to the battery
3
V-Test jumper
Insert in position 1-2 to enable LED power supply, 5V 9V 13.8V. The 4th
Led called "Mains" is always on when the board is powered by the
transformator, it is off if the battery intervenes
4
0,5 A battery jumper
Insert jumper when using batteries at or above 7 Ah.
N.B. Current limit for battery charging 0.5 A. Without jumper the current
limit load is 0.25 A
5
Heater fuse
Normally installed 5 A delayed protecting heaters circuits.
6
Circuit fuse
Normally it installed by 0.8 A slow, protecting Tx or Rx and infrared
circuits.
7
J7
It forces the output of the power supply 24 Vac for the heaters irrespective
of the temperature measured in the barrier.
N NAME DESCRIPTION
Terminal 6
1
GND
Negative power.
2
T
Test battery. By applying 5V you can verify that the battery has an output
voltage> 11.4Vdc. Such information is given on the "B" terminal.
3
B
High impedance output if the voltage supplied by the battery is
<11.4Vdc.
120Ω
output if the battery voltage is> 11.4Vdc.
This information is valid if "T" is on.
4
15
Output high impedance if the voltage is supplied from the <12.4Vdc.
120Ω
output if the voltage is supplied from> 12.4Vdc.
5
24
Output high impedance if the voltage supplied from the transformer
terminals "24Vin" is <18Vac.
120Ω
output if the voltage supplied from the transformer terminals
"24Vin" is> 18Vac.
6
NC
Not connected
