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What is the heatbed plug called?  

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Kraut55
(@kraut55)
Trusted Member
What is the heatbed plug called?

I ran into a Bed Preheat Error and finally realized that the plug that goes into the Rambo board had melted a little bit.
So I need to buy a new one. Does anybody know what this special type of plug is called?
Thanks.

Opublikowany : 17/11/2018 4:04 pm
alexander.s27
(@alexander-s27)
Estimable Member
Re: What is the heatbed plug called?

There are some threads out there with the specification for this very plug.
You could find them doing a thorough search within this forum.
But still, I would advise to remove the countrpart on the pcb and solder the wires directly.
Did so myself.

Opublikowany : 17/11/2018 6:38 pm
Kraut55
(@kraut55)
Trusted Member
Topic starter answered:
Re: What is the heatbed plug called?

Didn't find anything when I searched before posting. At least soldering it to the board is an alternative if I don't find the plug. Is there a special reason why you suggest it?

Opublikowany : 17/11/2018 7:53 pm
alexander.s27
(@alexander-s27)
Estimable Member
Re: What is the heatbed plug called?


Is there a special reason why you suggest it?

There is no plug which could melt, anymore.

Opublikowany : 18/11/2018 12:14 am
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(@)
Illustrious Member
Re: What is the heatbed plug called?

???

My Bed Heater connection is a screw block and split lugs on two wires; not a connector. The extruder heater is using a connector.

Plug names are generally hard to find because manufacturers love to be obscure ... They may be Molex, they may be Hirose, they may be Amphenol ...etc. There are dozens of manufacturers. Also - think computer power cables for old disks: they're called Molex simply because that's who made them. similar obscurity for the term 'ribbon cable'.

Only the manufacturer that designed and assembled the cable really knows what part was used. I doubt Prusa knows that detail.

The small black plugs are generically called square pin plugs because of the square pin they attach to, rows of these pins are called headers. Plugs with latches on them are "latching square pin" plugs. Yeah, how original. Anyway - too many years designing products and systems and running into connector fitment issues.

You can buy the plugs and female pins that make the connector. Here's a link to Molex plugs. Once you find the right one, Mouser or Digikey are two retail sources. But the plugs and sockets might be from another manufacturer.

https://www.molex.com/molex/products/group?key=wire_to_board_connectors&channel=PRODUCTS

Opublikowany : 18/11/2018 12:44 am
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: What is the heatbed plug called?

This is the Mk2 Forum, the Mk2 had plugs for the heatbed and the extruder.

the Plugs for the heatbed were running at or close to their limit. and any looseness or movement of the plug was likely to cause overheating. which could lead to melting.

the plugs are, Molex Plugs on the Mk2heatbed, and extruder,
It's available on the Prusa shop
https://shop.prusa3d.com/en/mk2-spare-parts/125-rambo-mini-heatbed-connector.html

the Mk3 uses forked screw terminals for the heatbed. it still uses a molex plug for the extruder, but as the Mk3 extruder runs at 24 volts, there is less current through this connector, making it less likely to overheat!

however these fork terminals are not immune to poor assembly either... as witnessed by a small number of overheated Mk3 terminal blocks

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Opublikowany : 18/11/2018 2:12 am
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(@)
Illustrious Member
Re: What is the heatbed plug called?

This is the Mk2 Forum,

Yikes - I missed that detail. I'll slink away now. Sorry.

Opublikowany : 18/11/2018 8:45 am
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: What is the heatbed plug called?

No need Tim,

we all make mistakes...

I tried printing ABS at PLA temperatures... it wasn't very successful... (to be fair, I thought I had got rid of all my ABS)

Keep on taking part...

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Opublikowany : 18/11/2018 10:44 am
Kraut55
(@kraut55)
Trusted Member
Topic starter answered:
Re: What is the heatbed plug called?

I wasn't aware of a problem with the connectors, but I just remembered that a few days ago when I tried to print ABS I smelled something but could not identify it. Thank you very much for your help.
As shipping is 5 times the price of the plug and considering that there seems to be a flaw in the design I guess I'll replace the connector and solder everything.

Opublikowany : 18/11/2018 12:57 pm
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