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bed heater stays on

Posted by amcron2

amcron2

bed heater stays on
April 09, 2015 03:40AM

Registered: 9 years ago
Posts: 7

Hi all ,I have a problem that my heated bed stays on when print is finished.
am I missing something in marlin v1
using rumba board

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amcron2

Re: bed heater stays on
April 09, 2015 03:49AM

Registered: 9 years ago
Posts: 7

sorry forgot to mention that I use a separate power supply and a solid state relay

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Zavashier

Re: bed heater stays on
April 09, 2015 03:52AM

Registered: 9 years ago
Posts: 1,011

It sounds like the bed's transistor is broken on your board. I don't know the Rumba, but on the Ramps, a led is always on, even if the bed is meant to be off. That means the transistor stays fully open.

Collective intelligence emerges when a group of people work together effectively. Prusa i3 Folger (A lot of the parts are wrong, boring !)

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jinx

Re: bed heater stays on
April 09, 2015 04:11AM

Registered: 11 years ago
Posts: 528

aint there a command that's needed at the end of the g code to shut the bed off. I use a ramp and that never turns off until I tell it too

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DaveRC

Re: bed heater stays on
April 09, 2015 05:53AM

Registered: 9 years ago
Posts: 18

In the slice program there is an option to add G codes to start and end of print, in the end of print you need to add

M140 S0

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dc42

Re: bed heater stays on
April 09, 2015 07:56AM

Registered: 10 years ago
Posts: 14,672

Usual practice is to use M0 or M1 in the end gcode, which in most firmwares turns all the heaters off.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].