Hello to all.
I write my first post on the forum because I need help and confront someone.
I want to build, with Arduino, an electromechanical relay control system with excitation voltage 34.6V (DC) and de-excitation 17.1V. The relay must remain powered for about 2 seconds at 36V (the time to power a motor and make the latter take a shot) and then switch to 18V for a time of up to several minutes (to keep the motor in position); the rest of the time the relay is not powered. The relay + motor assembly has a resistance measured at 20 ° C of 3.5 ohms.
I searched for relays that run continuously at 36V at 10A, with obviously a command voltage of 5V (to be controlled by Arduino), but it seems practically impossible to find them holding up beyond 30V DC (insufficient to excite the relay).
The only card I found is a DC motor control system with PWM regulation; it would also be interesting because I also have to be able to reverse the polarity of the 36V and this controller does it.
This is the link to the product on Amazon:
https://www.amazon.it/TOOGOO-H-Bridge-controllo-potenza-IRF3205/dp/B0793LSH3D/
The doubts I have are:
- how well does the electromechanical relay (70) hold a phase-modulated 18V voltage (which is therefore not constant 18V but 36V for half the time and 0V for the other half)? I can trust?
- Can the product I have posted be controlled by Arduino Uno?
- Is there a better solution considering the data I have provided (if you need others, ask me)? How would you build it?
Thanks in advance for the help.
Good day!