Max build plate temperature setting in cura for S5 not higher than 120 degrees C?

[dennismosterd 2]

Does anyone know why I can't set the build plate temperature higher than 120 degrees C in Cura (latest version) for my Ultimaker S5 pro bundle?

[GregValiant 1,409]

It's a liability thing.  The hot end is limited to 365° as well. Probably 99% of the printers out there cannot safely handle those kinds of temperatures (and you just know that some kid with his brand new Ultra Gold Platinum Pro 5000 will try to print tungsten carbide at 6000°.)

 

There are easy workarounds for both.

[Dadkitess 19]

Well I'm gonna be a bad mouth again but the UMS5 would definitely take AGES to get anywhere past 120°C so... Yeah, no point allowing higher temps if it's going to trigger the user with multiple messages about "why the hell my printer take 30 minutes to be ready to print PC"... Like me.

[dennismosterd 2]

I understand all of the above , but my question was raised because I used to be able to, but a few cura and firmware versions later I cannot...

 

and @GregValiant: what's the workaround??

[CarloK2 9]

I checked the firmware:

• v8.3.1 has a maximum bed temperature of 150C
• v9.0.0 reduced the temperature to 120C

Here is a link to the S5 Pro bundle User Manual, on page 11 it lists the specification for the build plate as 20 -140C.

I would file a complaint with Ultimaker that they reduced the functionality of your machine and ask for a firmware update where this is fixed.

 

In the mean time, you can tweak the printer to accept the original higher temperature again by modifying a configuration file on the printer.
I was looking for a recent post on how to change the machine settings, but there are only older posts, it seems like less people are tweaking the printers. Thanks to @maht, I copied his procedure:
 

Prerequisites: machine is connected to a network.

1. Put the printer in Developer Mode (from the printer's menu)
2. SSH into into your printer (user: 'root', pw: 'ultimaker', from v9.0.0 firmware the password is random)
3. Run 'apt-get update && apt-get install -y nano' to get a simple text editor
4. Run 'nano /usr/share/griffin/griffin/machines/9051.json'
5. Change 'max_bed_temperature": 120'
   to 'max_bed_temperature": 150'
6. CTRL + X and then Y to save changes
7. Restart printer service:
   systemctl restart griffin.printer
8. Check restarting succeeded:
   systemctl status griffin.printer
9. Optionally, disable Developer Mode

[GregValiant 1,409]

@dennismosterd I see it is as I surmised and along with the Cura limit, it's also a firmware thing.

 

I just checked my Ender 3 Pro.  An oddity is that the bed is limited to 125 in the firmware, but I can set the hot end temperature to 999 as the only limit seems to be that it will only display 3 digits.  That is well above the melting point of the aluminum heat block (660).

I'm not sure but it's possible that is a "bad thing".