Hello,
I would like to control 2 DC Motors;
they absorb more than 3A each.
I need also to change rotation direction of both.
Could you give me any suggestion, please?
Thanks
Giovanni
MIAC 8 bits controlling a DC motor > 1.75A
- LeighM
- Matrix Staff
- Posts: 2178
- Joined: Tue Jan 17, 2012 10:07 am
- Has thanked: 481 times
- Been thanked: 699 times
- Contact:
Re: MIAC 8 bits controlling a DC motor > 1.75A
Do you need speed control, or just on/off?
Perhaps you could use two MIAC relays to control the on/off power supply,
and use another pair of relays (or solid state outputs) to drive a pair of external DPDT relays to control direction.
Perhaps you could use two MIAC relays to control the on/off power supply,
and use another pair of relays (or solid state outputs) to drive a pair of external DPDT relays to control direction.
-
- Posts: 315
- Joined: Sun Jun 23, 2013 1:29 pm
- Has thanked: 28 times
- Been thanked: 61 times
- Contact:
Re: MIAC 8 bits controlling a DC motor > 1.75A
Hi
More info required
What voltage for the motors
What control signal voltage (inputs)
3A ??? What is the peak value
Check the DRV 8*** range of MOSFET Bridge drivers eghttp://www.ti.com/lit/ds/symlink/drv8829.pdf is one I found with a quick Internet search
Hope it helps
Matt
More info required
What voltage for the motors
What control signal voltage (inputs)
3A ??? What is the peak value
Check the DRV 8*** range of MOSFET Bridge drivers eghttp://www.ti.com/lit/ds/symlink/drv8829.pdf is one I found with a quick Internet search
Hope it helps
Matt
-
- Posts: 96
- Joined: Mon Mar 02, 2015 12:32 pm
- Has thanked: 5 times
- Been thanked: 11 times
- Contact:
Re: MIAC 8 bits controlling a DC motor > 1.75A
The motor is
RS Pro DC Geared Motor, Brushed, 12 V, 4.5 → 15 V dc, 2000 gcm, 3090 rpm, 19.8 W
RS Stock No.454-0877
Brand RS Pro
Mfr. Part No.942D51
the specs are attached to this post.
I think is a 2.85A at 12V.
Yes I would like to have speed control, too: I think if I connect the A and 0V to the input of an SSR I might sort it out?
Farnell
D1D20 - SSR, PANEL MOUNT, 100VDC, 32VDC, 20A
Manufacturer: CROUZET AUTOMATION
Manufacturer Part No: D1D20
Order Code: 1533374
What do you think?
Giovanni
RS Pro DC Geared Motor, Brushed, 12 V, 4.5 → 15 V dc, 2000 gcm, 3090 rpm, 19.8 W
RS Stock No.454-0877
Brand RS Pro
Mfr. Part No.942D51
the specs are attached to this post.
I think is a 2.85A at 12V.
Yes I would like to have speed control, too: I think if I connect the A and 0V to the input of an SSR I might sort it out?
Farnell
D1D20 - SSR, PANEL MOUNT, 100VDC, 32VDC, 20A
Manufacturer: CROUZET AUTOMATION
Manufacturer Part No: D1D20
Order Code: 1533374
What do you think?
Giovanni
-
- Posts: 315
- Joined: Sun Jun 23, 2013 1:29 pm
- Has thanked: 28 times
- Been thanked: 61 times
- Contact:
Re: MIAC 8 bits controlling a DC motor > 1.75A
Hi Giovanni,
http://www.robotshop.com/uk/36a-drv8871 ... board.html - Assembled Board (£6ish)
http://www.ti.com/lit/ds/symlink/drv8871.pdf - Data sheet
Look at pages 8,9,10,11
You will see from the table on page 8 that you will need two PWM pins to fully control the motor with forward reverse and brake or toggle for 100% speed forward or reverse.
Page 9 how to limit the maximum current if desired
Page 10 outlines the inbuilt protection available
Page 11 shows a basic example of how to connect up
Edit : just seen this https://www.pololu.com/product/1213 and this http://www.hobbytronics.co.uk/dual-6a-d ... controller
Matt
http://www.robotshop.com/uk/36a-drv8871 ... board.html - Assembled Board (£6ish)
http://www.ti.com/lit/ds/symlink/drv8871.pdf - Data sheet
Look at pages 8,9,10,11
You will see from the table on page 8 that you will need two PWM pins to fully control the motor with forward reverse and brake or toggle for 100% speed forward or reverse.
Page 9 how to limit the maximum current if desired
Page 10 outlines the inbuilt protection available
Page 11 shows a basic example of how to connect up
Edit : just seen this https://www.pololu.com/product/1213 and this http://www.hobbytronics.co.uk/dual-6a-d ... controller
Matt
Last edited by Docara on Wed Jul 05, 2017 11:13 am, edited 1 time in total.
-
- Posts: 96
- Joined: Mon Mar 02, 2015 12:32 pm
- Has thanked: 5 times
- Been thanked: 11 times
- Contact:
Re: MIAC 8 bits controlling a DC motor > 1.75A
Hi Matt,
Ok, I will buy the driver and I will post my results.
(give me a week or so)
thank you!!!
Giovanni
Ok, I will buy the driver and I will post my results.
(give me a week or so)
thank you!!!
Giovanni
-
- Posts: 315
- Joined: Sun Jun 23, 2013 1:29 pm
- Has thanked: 28 times
- Been thanked: 61 times
- Contact:
Re: MIAC 8 bits controlling a DC motor > 1.75A
Hi Giovanni,
Please check and verify for yourself if they are suitable for your specific requirements, don't just buy one because of my suggestion.
Matt
Please check and verify for yourself if they are suitable for your specific requirements, don't just buy one because of my suggestion.
Matt