Good morning,
New CNC owner and having issues with the Yhome. I receive this error after every home.
Failed to back off Y home sensor
How can I fix it?
Hi @alfredbeas
This can occur if the machine is out of square or the Y-axes are out of alignment when the homing is started. The error can occur sometimes if one of the Y-rails hits the homing sensor much sooner than its partner.
One quick fix to try is to hit the e-stop so the axis can move freely. Manually pull both Y rails to the front so they are at the zero position. Release the e-stop and try homing again.
Thank you. I’ll give it a try. It randomly started doing it about 2-3 days after building it. Stopped for about two days and came back today.
I have also seen some reports of bright light interfering with the opto-interrupter homing sensors. It might also be worthwhile to throw some makeshift shields over them to see if that is the issue.
just FYI… I also had this problem but it was none of these causes…
Turns out I had a bent pin on the connector for Y2 limit sensor, causing it to not work. Quick fix, after consulting 1F support, to just straighten the pin and reconnect… fixed all my problems!
Confirmed there is a little red LED light visible inside all the limit sensors!
I am having the same issue. Just upgraded from the Masso to the Redline HMI.. Ive manually pulled my Y rails and reset them, Covered the sensors to avoid light… Nothing is working. Emailed Support. I’ll see what they say.
Did this get resolved?
Didn’t get the part they sent me Saturday…. So I left town for work…. Won’t be home till end of the week to find out. I’ll try the part to see….
I have the exact same problem. It tries to home Y but won’t back off it and throws an error. I would be very interested to hear how things go.
Mine homes and then saays Failure to Back off Y. We went through alot of try this try that fixes one day and narrowed it down to the limit switches not working properly. At least thats the rabbit hole we are going down now. They have a fix of some sort. its a spacer that you put behind the indicators on the y rails that forces them deeper into the limit switch. So I guess we will find out. I wont be back home till friday and I will try it then.. I am guessing its not going to work. because right now those tabs go all the way in from what I can see and I still get the error. BUT im going through their process to see. I’ll report back.
I would contact support if I were you to get the ball going on yours..