CoreXY axis don't move at printing

Phaedrux

I would recommend a Meanwell PSU. The wattage will depend on if you're powering a PCB bed heater as well, or if it's an SSR controlled AC mains heater.

https://duet3d.dozuki.com/Wiki/Choosing_the_power_supply

mrehorstdmd

I second that. MeanWell makes good stuff. Avoid the cheapo "LED" power supplies that litter ebay. MeanWells cost just a few $ more and are far more reliable.

How can you tell junk from the good stuff? Look for certification marks like CE, UL, TUV, etc. The more of those it has, the better.

Phaedrux

@mrehorstdmd said in CoreXY axis don't move at printing:

How can you tell junk from the good stuff?

It also helps to buy from reputable distributors like mouser or digikey.

Here's the one I use. (canadian mouser store front) https://www.mouser.ca/ProductDetail/Mean-Well/SE-200-24/?qs=sGAEpiMZZMsPs3th5F8koBXG%2F88ctzcM7%252bcCQ8TI45g%3D

AimRabbit

@phaedrux said in CoreXY axis don't move at printing:

Meanwell

Ok. And yes I have a PCB bed heater connected to the duet.
What a PSU could you recomment for a Duet 2 Wifi, PanelDue 7i, E3D Chimera, PCB bed heater, one tool fan and two part fans. I realy appreciate your help. Thanks a lot!

AimRabbit

@phaedrux said in CoreXY axis don't move at printing:
canadian mouser store front

Sorry but I'm from germany and it's very expensive to ship and tax. But thank you now I know what I'll looking for. Hopefully everything will work after that replacement.

Phaedrux

Well Mouser is just an example of a reputable distributor. You'd have to find something similar locally.

The PSU I linked is suitable for a printer without a PCB heated bed.

This link will help you calculate how big the PSU needs to be: https://duet3d.dozuki.com/Wiki/Choosing_the_power_supply

dc42

Your power supply voltage is probably dropping when the bed heater turns on. Is your bed heater definitely a 24V one; or if it is dual voltage, have you wired it for 24V not 12V?

AimRabbit

@dc42 said in CoreXY axis don't move at printing:

Your power supply voltage is probably dropping when the bed heater turns on. Is your bed heater definitely a 24V one; or if it is dual voltage, have you wired it for 24V not 12V?

Yes it drops at heating the bed. I asked you that in an other thread but you didn't answer I thought of this it doesn't matter.
Ok now I take a look at it but there are no hints if it's 12V or 24V. I can see that there are 3 points where you can wire it. I took 2 pictures for you.

dc42

Can you measure the resistance between the two wires? What size is the bed heater?

AimRabbit

@dc42 said in CoreXY axis don't move at printing:

Can you measure the resistance between the two wires? What size is the bed heater?

I measured 3 ohm and the size is 330x330mm.

AimRabbit

@dc42 I have to correct my answer after using an other multimeter I get 1,3 ohm

dc42

@aimrabbit said in CoreXY axis don't move at printing:

@dc42 I have to correct my answer after using an other multimeter I get 1,3 ohm

That's a 12V bed heater. As you are using 24V power, you need a 24V one. That explains why your PSU was shutting down.

AimRabbit

@dc42 said in CoreXY axis don't move at printing:

@aimrabbit said in CoreXY axis don't move at printing:

@dc42 I have to correct my answer after using an other multimeter I get 1,3 ohm

That's a 12V bed heater. As you are using 24V power, you need a 24V one. That explains why your PSU was shutting down.

Is there a way that the heating bed can be used with 24V? Or do I have to buy a new one and where can I get a good one in that size?

Phaedrux

From a little googling it looks like there is a Tronxy bed that is 24v compatible.

As for where you would be able to find it. I'm not sure about in Germany, but there's always gearbest. https://www.gearbest.com/3d-printer-parts/pp_314650.html

AimRabbit

@phaedrux said in CoreXY axis don't move at printing:

From a little googling it looks like there is a Tronxy bed that is 24v compatible.

As for where you would be able to find it. I'm not sure about in Germany, but there's always gearbest. https://www.gearbest.com/3d-printer-parts/pp_314650.html

Sorry but this is a 230x230mm heatbed but I need a 330x330mm. It's 10cm to small.

Phaedrux

@aimrabbit looks like you know the terms to google for then.

AimRabbit

@phaedrux said in CoreXY axis don't move at printing:

@aimrabbit looks like you know the terms to google for then.

It's not that I'm tried to find one. But I only get undersized heatbeds so that's why I'm asking but if no one have an idea I have to find an other solution. And I'm don't asking just for fun... I'm asking because I'm stuck with the VIN problem from the beginning.
So I don't like your sacasm.

Phaedrux

My apologies, I didn't intend to sound sarcastic. It was just that a quick google search turned up several options in multiple sizes.

Here's a 330x330 24v: https://www.aliexpress.com/item/3D-Printer-MK2A-MK3A-Aluminium-Heatbed-Thermistor-Build-Surface-Sheet-300mm/32948965327.html

AimRabbit

@phaedrux said in CoreXY axis don't move at printing:

My apologies, I didn't intend to sound sarcastic. It was just that a quick google search turned up several options in multiple sizes.

Here's a 330x330 24v: https://www.aliexpress.com/item/3D-Printer-MK2A-MK3A-Aluminium-Heatbed-Thermistor-Build-Surface-Sheet-300mm/32948965327.html

Wow thank you so much I'll go and order it right now! Thank you! I found nothing and thought I waste all my money.. I realy appreciate your help. I must order it... THANKS!

AimRabbit

@phaedrux said in CoreXY axis don't move at printing:

My apologies, I didn't intend to sound sarcastic. It was just that a quick google search turned up several options in multiple sizes.

Here's a 330x330 24v: https://www.aliexpress.com/item/3D-Printer-MK2A-MK3A-Aluminium-Heatbed-Thermistor-Build-Surface-Sheet-300mm/32948965327.html

I bought now this one https://www.roboter-bausatz.de/833/mk2a-heizbett-300x300-mm because the one from aliexpress would take nearly one month to be send to me. But with your link I got the right model and found a lot of matches. Big thanks.