Hi from New Zealand,
I am slightly into electronics having built 4 CNC machines which the last two are working wonderfully. I am on a new project now but seem to be stumped on what is the best and cheapest solution for what I want to do.
Having worked in the ROV industry and having also very limited experience in electronics I have so much going on with ideas I am completely missing the point.
Short story:
1. I have 10 woodworking machines in my workshop running on 230v.
2. I want to install a current sensor on each machine which, when turned on will activate a relay to supply 24vdc to a pneumatic solenoid which will then open a gate via a pneumatic miniature cylinder for my extraction system particular to that machine, and also activate a common relay to start the 230v 3hp dust extractor.
3. When the machine is turned off, the pneumatic ram will spring shut with loss of 24vdc to the solenoid and the extractor will shutdown.
I seem to be having trouble working out how to convert the small voltage (milli volts) from a non evasive current sensor to enough voltage to operate a relay. It seems so simple yet I am unsure where to start.
Everything else, the physical gates, pneumatic rams, solenoids, air supply is no problem. Just the sensor to the relay. I was considering a circuit using a transistor with an arduino board but feel that’s over the top.
What do you think? Would you mind giving me an idea to work on? Warm regards Boyd [E-mail removed]
I am slightly into electronics having built 4 CNC machines which the last two are working wonderfully. I am on a new project now but seem to be stumped on what is the best and cheapest solution for what I want to do.
Having worked in the ROV industry and having also very limited experience in electronics I have so much going on with ideas I am completely missing the point.
Short story:
1. I have 10 woodworking machines in my workshop running on 230v.
2. I want to install a current sensor on each machine which, when turned on will activate a relay to supply 24vdc to a pneumatic solenoid which will then open a gate via a pneumatic miniature cylinder for my extraction system particular to that machine, and also activate a common relay to start the 230v 3hp dust extractor.
3. When the machine is turned off, the pneumatic ram will spring shut with loss of 24vdc to the solenoid and the extractor will shutdown.
I seem to be having trouble working out how to convert the small voltage (milli volts) from a non evasive current sensor to enough voltage to operate a relay. It seems so simple yet I am unsure where to start.
Everything else, the physical gates, pneumatic rams, solenoids, air supply is no problem. Just the sensor to the relay. I was considering a circuit using a transistor with an arduino board but feel that’s over the top.
What do you think? Would you mind giving me an idea to work on? Warm regards Boyd [E-mail removed]
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