Auto-sleep not working as expected

yonutz33

Hello,

I've got the Duet maestro running on a CoreXY machine (Sapphire Pro). I have enabled auto-sleep and added the following to the sleep.g file: M81 S1 ; shutdown
It should shutdown the machine once a print is finished after extruder cools down to below 45C. But it never works/never gets triggered. Anybody got any idea why this might be happening?
I'm using this version of the firmware: 2.04 (2019-11-01b1)

Thanks in advance

Phaedrux

To begin with I would suggest updating to firmware 2.05 and the latest DWC 2.0.7 and testing again.

dc42

M81 S1 turns the PS_ON output off once all thermostatic fans are off. So it will only work if you use PS_ON to control your PSU, and the printer cools enough to turn all your thermostatic fans turn off.

yonutz33

@dc42 said in Auto-sleep not working as expected:

M81 turns the PS_ON output off once all thermostatic fans are off. So it will only work if you use PS_ON to control your PSU, and the printer cools enough to turn all your thermostatic fans turn off.

Yes, i get that. I have setup the board to use an SSR and a button as described in the BLV MGN cube wiring (i can give you a link if that helps) for the startup, so PS_ON is used to turn the printer on. I know it will shut everything once it reaches temperatures of <45C but that never happens.

dc42

Does M81 with no parameters turn the printer off immediately?

yonutz33

Yes M81 without parameters shuts down the printer immediately.

Even M81 S0 works, if i execute the command manually during a print it will shut down once it's done and temp reached values lower then 45C.

dc42

Please post your config.g file. Also your stop.g file, if you have one.

yonutz33

I will post this comming weekend. Sorry for answering after such a long time, I was away on business trips.

Also i discovered that my Fotek SSR (china crap) remained latched randomly even though i instructed it differently through the Duet. I've retested it on my bench and 1 in 5 cases it remains energised. I've ordered a better branded one and once i've replaced it i will get back to you.

yonutz33

@dc42 Here they are config.g and stop.g
Stop.g seems to be empty, only comments.