M25 resume-after-power- fail-state saved?



  • My D-BOT with Duet Wifi have got a strange behavior, it release a ![M25 resume-after-power- fail-state saved https://1drv.ms/f/s!AmiXGFnLNvHbsyhH8CDJG-PHfQa4, and start printing in a wrong place, moving diagonally against Y0/Xmax.
    I need some input on this, I've tried everything to get this right, but the error is still there. I have tried a new PSU, but it didn't help any. I've used my printer for several months, and have not change the settings and this occur this week. Next I'll try, is to check all motor plug in, but now I search in the dark, any suggestions?

    I forgot this:

    Firmware Name:
    RepRapFirmware for Duet 2 WiFi/Ethernet
    Firmware Electronics:
    Duet WiFi 1.02 or later + DueX5
    Firmware Version:
    2.0(RTOS) (2018-06-05b3)
    WiFi Server Version:
    1.19
    Web Interface Version:
    1.19


  • administrators

    The firmware saves the resume state whenever you pause the print. To reduce confusion, in firmware 2.02RC5 the message has been changed from "Resume-after-power- fail-state saved" to "Resume state saved".



  • Sorry for a late respons.
    No, I struggling with the same problem, upgrade to the latest firmware and web control. This time I got a longer alarm list, looks like it's a driver problem? I use 0.9 steppers on XY axis, is those a problem? I've tried different prints, also lasting over 4 hours with a good result. so I'm really confused. The whole thing is on 24v. Unless the heated bed, it's on 220v, via SSR relay.
    This is what the Duet tells me![alt text](0_1543920926837_duet wifi.JPG image url)


  • administrators

    The firmware is claiming that the X motor (assuming that you haven't used M584 to remap the X driver to) is disconnected or set to a very low current. Send M906 and M913 without parameters, to see what motor currents are set.



  • Hi! Thank you for a quick respond to my problem.
    I had used M584 to remap the X driver, but now I have it back on the original position. And the warning report list looks way better. At the same time I looked over all the electrical on the main board, to eliminate any problem with the hardware. I don't use the M911 code yet, is this something I should have done?


  • administrators

    The M991 command is needed only if you want to activate the resume-after-power-fail feature. https://duet3d.dozuki.com/Wiki/Setting_up_to_resume_a_print_after_a_power_failure



  • Hi!
    I did find where the problem was, I changed the Y and X motors from 1.8 steppers to 0.9 steppers a while ago. It looks like the holding torque of the 0.9 steppers was too low. When I stepped back, and mounted the 1.8 steppers, the printer worked as it always have.


  • administrators

    @knutk said in M25 resume-after-power- fail-state saved?:

    Hi!
    I did find where the problem was, I changed the Y and X motors from 1.8 steppers to 0.9 steppers a while ago. It looks like the holding torque of the 0.9 steppers was too low. When I stepped back, and mounted the 1.8 steppers, the printer worked as it always have.

    I'm glad you solved it. Typically, 0.9deg motors have a little less holding torque than 1.8deg motors from the same manufacturer with the same size and rated current. Example:

    • 17HS19-2004S1 (1.8deg) 59Ncm
    • 17HM19-2004S (0.9deg) 46Ncm

    It gets more complicated if you change the motor length or rated current at the same time.


 

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