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Rambo 1.2x board

Posted by sbloom67

sbloom67

Rambo 1.2x board
April 08, 2014 10:10AM

Registered: 10 years ago
Posts: 7

So I am getting ready to build my large printer and I want to use 24 volts for large bed , etc.

My question is how much amperage can a Rambo board accept and send out ???

Also, I want to use Nema 23 steppers for x y and z. I see ones rated for 1 amp and higher.

How much power can the Rambo send out per coil ???

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samp20

Re: Rambo 1.2x board
April 08, 2014 11:06AM

Registered: 10 years ago
Posts: 115

According to the wiki [reprap.org] the rambo has 3 power supplies with the following rating:

Heated Bed, 15A 12-24V (version earlier than 1.1 limted to 14A 16V due to fuse rating, see rambo_development for hacks)
Extruders and fans, 5A 12-24V (fuse can be exchanged for up to 10A capacity) 10V-26V input voltage
Motors, 5A 12-24V (fuse can be exchanged for up to 10A capacity) 10V-26V input voltage

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sbloom67

Re: Rambo 1.2x board
April 08, 2014 11:26AM

Registered: 10 years ago
Posts: 7

I really need to know how much each stepper can handle in Amps so I can make sure I can get the correct Nema motor.

Thanks Steven

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tjb1

Re: Rambo 1.2x board
April 11, 2014 08:30AM

Registered: 10 years ago
Posts: 553

Rambo uses A4982 drives, datasheet here - [www.farnell.com]

Edited 1 time(s). Last edit at 04/11/2014 08:30AM by tjb1.