upgraded heated bed, reboots

akuma211

Duet2wifi, MP Delta Pro;

Hello, i tried upgrading/replacing the heated bed i had on my delta printer, to a JSR Industries, 10inch 24v 400W silicone heated bed.
it looks like i installed everything correctly, im getting a H0 temp readout on (~21C)

I tried running the PID auto tune: M303 H0 S60, but the duet2wifi reboots almost immediately. trying to heat the bed at all reboots the board.
i was hoping i could keep it simple by getting a 24v heated mat and the duet to power it, anyone have any suggestions?

ive read a few bits online and it seems a power supply could be an issue?

here is some of the m122 data, doesnt look like i can post the whole report;

=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.3beta2 running on Duet WiFi 1.02 or later
Board ID: 0JD0M-9K662-MGPSS-6J9FJ-3SJ6Q-98SUW
Used output buffers: 3 of 24 (11 max)
=== RTOS ===
Static ram: 21568
Dynamic ram: 74660 of which 0 recycled
Never used RAM 18188, free system stack 184 words
Tasks: NETWORK(ready,227) HEAT(delaying,294) MAIN(running,443) IDLE(ready,20)
Owned mutexes: WiFi(NETWORK)
=== Platform ===
Last reset 00:01:09 ago, cause: power up
Last software reset at 2021-04-27 21:12, reason: User, GCodes spinning, available RAM 18188, slot 0
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
MCU temperature: min 22.6, current 23.5, max 23.9
Supply voltage: min 24.2, current 24.2, max 24.3, under voltage events: 0, over voltage events: 0, power good: yes
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0

=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
Heater 1 is on, I-accum = 0.0

dc42

@akuma211 most likely your power supply can't handle the additional current so it is cutting out. What power supply is it? Does the blue power LED on the Duet go out briefly when you turn the bed heater on?

akuma211

@dc42 it's the stock power brick style that came with the printer: https://www.monoprice.com/product?p_id=36570&gclid=CjwKCAjwj6SEBhAOEiwAvFRuKM6bxCdIWIqrvPkT-lwHuX6xnoBg58RcqzB2baweFY4xRaTi5caD1hoCr6kQAvD_BwE

I have a meanwell that came with my ender I'm not currently using, I have been thinking of swapping it in, but I have not done something like this before, I've replaced the meanwell but that was a straight swap with the original landy power supply

engikeneer

@akuma211 from a quick Google, that power supply is for 220w, whilst your new bed will draw 400w! There's no way it will be able to power the new bed (which sounds quite powerful for its size). Yall gonna need a bigger power supply!
I'd also check that your meanwell one is up to the job (right voltage and watts)

akuma211

@engikeneer thanks, that makes a lot of sense, I think the meanwell is something like 360W so yeah I'll probably need a bigger power supply than that even.

Well, I'm already committed, might as well go with it lol

Any recommendations?
I see a few 400-500W meanwells on Amazon

engikeneer

@akuma211 work out how much power you need. Try following this page: https://duet3d.dozuki.com/Wiki/Choosing_the_power_supply

I'd get the next one up from what you need so you have a bit of headroom

Meanwell ones are generally good. There's a decision over whether to go fanless or not - fanless are generally larger but quieter. It's been a while since I bought one so don't really know the different product lines. You'll also need to consider how/where to mount it to your printer as they aren't small...

akuma211

@engikeneer yes that's one of the reasons I haven't tried swapping PS, the power brick is hidden, and yes I know it's just asthetics, but it's one of the reasons I really like the delta pro lol.

I'll see what I find, thanks
Update: went with this, will see if I have time to test it out this weekend

MEAN WELL RSP-500-24

akuma211

It looks like everything is now working smoothly, thank you everyone for your help.

The new 400W silicone bed heater is working great, heats up much faster and im finally not having problems with bed adhesion, couldnt even get PLA to stick on a leveled bed before.

The power supply was a 'future' upgrade ive been wanting to do, guess getting a kick in the butt to getting it done now to power the 400W upgraded bed heater was a blessing in disguise.

overall very happy