I'm fairly new to forums and electronics as a whole but need a little help.
I currently use a MC-60 treadmill controller for controlling DC motors and have recently been introduced to Aduinos.
The MC-60 uses PWM to control the speed and I would like to build a controller by useing the Arduino.
Typically the motor ratings for treadmill motors are in the range of 90-130 Volts DC, 14-20AMPS.
I've done a little research on attempting this and have come up with a possible circuit.
I need another brain to look at my design and give me an idea if I'm on the right path.
Attached is my design and also a schematic of the MC-60.
Go easy on me, I'm a total newbe in this area, though I have a background in industrial automation engineering.

 

You may want to look at Tahmids blog also.
http://tahmidmc.blogspot.ca/2013/01/using-high-low-side-driver-ir2110-with.html
Incidentally the Picmicro's have a PWM drive module in many versions.
Max.

 

You may want to look at Tahmids blog also.
http://tahmidmc.blogspot.ca/2013/01/using-high-low-side-driver-ir2110-with.html
Incidentally the Picmicro's have a PWM drive module in many versions.
Max.

Thanks for the quick reply. I did fine that blog interesting as a later option to explore later when I learn a little more about electronics and can understand better the terms and lingo.
I'm trying to take simple steps first, and you threw me in the deep end of the pool. I was looking for some nuging in the right direction.
Am I heading in the right direction with my design? I don't want to emulate the MC-60 fully at this point, just get the crazy thing to spin the motor without toasting a bunch of parts for gigles.

 

I'm fairly new to forums and electronics as a whole but need a little help.
I currently use a MC-60 treadmill controller for controlling DC motors and have recently been introduced to Aduinos.
The MC-60 uses PWM to control the speed and I would like to build a controller by useing the Arduino.
Typically the motor ratings for treadmill motors are in the range of 90-130 Volts DC, 14-20AMPS.
I've done a little research on attempting this and have come up with a possible circuit.
I need another brain to look at my design and give me an idea if I'm on the right path.
Attached is my design and also a schematic of the MC-60.
Go easy on me, I'm a total newbe in this area, though I have a background in industrial automation engineering.

Should we close this thread?
Because if a transformerless circuit that it is restriction in the Terms of Service (ToS).

 

Where are the 110Vdc+ and 110Vdc- come from?
What you mean that the 110Vdc+ and 110Vdc- is just 110Vdc+ and 0V or 110Vdc+ and 110Vdc- equal to 220Vdc?

 

Where are the 110Vdc+ and 110Vdc- come from?
What you mean that the 110Vdc+ and 110Vdc- is just 110Vdc+ and 0V or 110Vdc+ and 110Vdc- equal to 220Vdc?

The 120Vdc comes from a bridge recifier. I guess it would be more correct to label them as 110Vdc+ and 0Vdc as the negative side. Like a battery would b
e labeled.

 

The 120Vdc comes from a bridge recifier. I guess it would be more correct to label them as 110Vdc+ and 0Vdc as the negative side. Like a battery would b
e labeled.

I am asking that where is the AC side of the bridge rectifier comes from?

 

Incidentally the Picmicro's have a PWM drive module in many versions.
Max.

The Arduino also has PWM built into its programming language. There are several PWM pins, and the command is analogWrite(pin,dutyCycle)

 

I am asking that where is the AC side of the bridge rectifier comes from?

Plugged directly into house current.

 

The Arduino also has PWM built into its programming language. There are several PWM pins, and the command is analogWrite(pin,dutyCycle)

The programming side of this project should be no problem, I've programmed many different projects and have working experience with PLCs.

 

Plugged directly into house current.

That is a transformerless ps, and it is restriction in the Terms of Service (ToS).

 

That is a transformerless ps, and it is restriction in the Terms of Service (ToS).

I don't quite understand why that would be because the circuit that I'm trying to emulate uses no transformer to power it. House current is plugged directly into the board. ???

 

I don't quite understand why that would be because the circuit that I'm trying to emulate uses no transformer to power it. House current is plugged directly into the board. ???

1. Restricted topics. The following topics are regularly raised however are considered "off-topic" at all times and will result in Your thread being closed without question:
   • Any kind of over-unity devices and systems
   • Devices designed to electrocute or shock another person
   • LEDs to mains
   • Phone jammers
   • Rail guns and high-energy projectile devices
   • Transformer-less power supplies
   If You come across a thread or post discussing any of the above topics please report the thread so We can close, and if necessary remove, the offending thread/posts.

http://www.allaboutcircuits.com/user-agreement/

Do you know that is the rules, as the automotive that it is just open for discussion, but this topic is not allowed yet.

If you want to discuss this topic then you have to wait for open or go to other forums.

Transformerless power supplies of any kind are strictly forbidden. Therefore, this thread will be closed.

Please try to understand the reasons behind this action, and feel free to browse and use the forums.

You might find answers to your questions in one of these forums:

http://forum.allaboutcircuits.com/showthread.php?t=54400

Another good forum that shares many of the same membership is http://www.electro-tech-online.com/ .

Good luck.

 

1. Restricted topics. The following topics are regularly raised however are considered "off-topic" at all times and will result in Your thread being closed without question:
   • Any kind of over-unity devices and systems
   • Devices designed to electrocute or shock another person
   • LEDs to mains
   • Phone jammers
   • Rail guns and high-energy projectile devices
   • Transformer-less power supplies
   If You come across a thread or post discussing any of the above topics please report the thread so We can close, and if necessary remove, the offending thread/posts.

http://www.allaboutcircuits.com/user-agreement/

Do you know that is the rules, as the automotive that it is just open to discussion, but this topic is not allowed yet.

 

Ok, Understandable.
Would a one to one transformer meet that requirement?

 

Ok, Understandable.
Would a one to one transformer meet that requirement?

If you could use that way then you can be discuss continuing.
So you have to modify your circuit and repost it.

 

If you could use that way then you can be discuss continuing.
So you have to modify your circuit and repost it.

Will do. Thanks so much for your help.

 

Will do. Thanks so much for your help.

Revised it. Hope this meets the criteria.

 

Revised it. Hope this meets the criteria.

Yes, thanks.
Why you not just labeling the ACV as AC110V, 0V and AC120V, 0V?

 

Yes, thanks.
Why you not just labeling the ACV as AC110V, 0V and AC120V, 0V?

Yes they should be both 120 volts. Oversight on my part. Other than that does my design have any chance in working. This stuff is all a bit strange to me yet. Quite different than automation engineering.