|SICARIO – SCHEMES|
· 5 Motors 220V with reducing
· 1 Motor 24V with reducing
· 10 24V commutate.
· 14 Diodes
· 10 Transistors NPN BD 137
· 10 Leeds.
· inversor 7404
· Decoders 74137
· Transforming 220V-24V-5V.
Why Sicario working by different voltages ,need divide the electronics components in different sections.
- Voltages of 220V and 24V to run the motors.
The motors, are run with their respective voltages by commutate, the C2M (Centronics to Motors) controller the transistors. Each motor controlled by 2 commutate, each one of commutate controls a direction of the motor. Thanks to the multiple contacts of commutate we made a simple and effective, system protection to preventing activate the opposite direction; we avoided the possible short circuits when sending erroneous data from our PC.
Is good use a diode on the voltage commutate input to safeguard the transistors.
In the transistors
scheme, we have two defined types, 5 of them are fattened by the C2M and
5 by the PC. In Base of the 5 later need put a 100 ohms resistor and a
LED, this is use prevent damage the PC port The transistor signal are sent
by the pins 18.104.22.168.5 by the parallel port, they running the motors 1 and
2 in two directions and the 3 in one of their directions.
The C2M this made by a 74137 decoder whose exits are inversed with 7404. The PC bits (6,7,8) need a resistor, and going to 74137 pins (1.2.3). Then the 74137 can decoder 3bits to obtain a 5 data that we need to control one motor 3 direction and two directions for the 4 and 5 motors. Pins 5.6 and 8 of the 74137 go to mass, pin 9 to positive. Pins 22.214.171.124.15 to entrances 126.96.36.199.11 of the 7404, respectively. The 7404 exits pins 188.8.131.52 and 12 to the transistors already mentioned, pin 7 to ground and the 8 to positive.
It is necessary to remember: