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Help! Gerber Sabre 408 error during ORIENTATION
- Thread starter Amos
- Start date
Hello StarSign, thanks for reaching out. It is an older screw, but I don't see much of anything on it. If I turn all power off and push the gantry back and over so it has to travel a bit while trying to orient, it moves fine until it hits the far-left side then it trips and throws the error code.
I tried cleaning the left limit switch still tripped and then I tried swapping it out with the back Y Limit switch still same result. Talked with Gerber tech support and they had me try testing the limit switches with a flat head screwdriver to see if it would trigger the spindle to stop moving to the left during orientation and it did not. They said my problem is the X Limit Switch Cable has gone bad is that common?
Tbh.. Cables rarely fail unless there's mechanical damage.. Connectors however..
If you've got a multi meter you can do a continuity check to see if the two wires have continuity one end to the other.
The other issue is.. A switch can fail closed.. Limit switches "Should" be closed, then open when the switch is depressed (so if cable breaks, switch is activated) see if you can test the switch without the cable connected.
If you've got a multi meter you can do a continuity check to see if the two wires have continuity one end to the other.
The other issue is.. A switch can fail closed.. Limit switches "Should" be closed, then open when the switch is depressed (so if cable breaks, switch is activated) see if you can test the switch without the cable connected.
If its a microswitch, simply test the continuity between the connectors. You'll usually have 3.. One common and a normally open and normally closed.
Some have electronic switches - they're harder to test as need to be powered, but most have a led to show if they've switched.
Try posting a few pictures to give us a better idea of what might be the issue
Some have electronic switches - they're harder to test as need to be powered, but most have a led to show if they've switched.
Try posting a few pictures to give us a better idea of what might be the issue
After several hours working with it today, the router now is reacting to the left switch and lets me orient it. I can send the gentry up and down the Y with out a problem but if I try left or right it sounds a bit rough on the X axis and trips. People said you I should be able to push the spindle moter on the screw left or right when the power is completly off like I can the Z and Y but I can't get it to budge. My question Is there bearing so something that froze could be locking up?
Ahh.. With power off, most servo and stepping drives can be easily moved. You could have something stuck in the bearing. Unfortunately you'll have to disassemble it to get to the bearing.
Ive not worked on this one, but a common issue in most machines is if they've got central lubrication and a pipe blocks. Check to see if there are any pipes leading to the bearing. The oil helps to flush rubbish out of the bearing. Easy enough to clean - plenty of you tube videos. But make sure it is the linear bearing first.
Ive not worked on this one, but a common issue in most machines is if they've got central lubrication and a pipe blocks. Check to see if there are any pipes leading to the bearing. The oil helps to flush rubbish out of the bearing. Easy enough to clean - plenty of you tube videos. But make sure it is the linear bearing first.
JBurton
Signtologist
Oye, bearing or the motor is taking a dive, but most likely just the bearing. (The motor would have to fail in a very particular way to give resistance when unpowered and yet still be driven by power)
Here's a guide to replacing the lead screw on the x axis. It'll walk you through the full tear down to the point of getting to the bearings. Once you have the belt free of the motor, you can verify that the bearings are the issue, then source new bearings and replace them. (Ideally you get the bearings before tearing into it so you can complete everything in one teardown.)
Here's a guide to replacing the lead screw on the x axis. It'll walk you through the full tear down to the point of getting to the bearings. Once you have the belt free of the motor, you can verify that the bearings are the issue, then source new bearings and replace them. (Ideally you get the bearings before tearing into it so you can complete everything in one teardown.)
Getting back on to thank people for replying and offering you time. After loosening the motor plate and releasing the belt to the X servo motor I could see that the motor was fine. Next was the bearings I unbolted the screw block from the plate and now was able to move the spindle on the bearings without much effort. Turns out the X screw nut and block where so packed with gunk that was basically locked up. I was due for a new x-screw any way so after installing a new x-screw and x-screw nut and block machine is up and running like new. Shop is back up and running! 
JBurton
Signtologist
Wait, this thing is awesome. I'm wondering if I can't fit it onto my shopsabre without removing the screws themselves. Also, can this sort of thing retract and coil properly at 'high speed', like 2100 ipm?
I've never seen such a device, and I've been cleaning and lubricating the crap out of my two x axis drives, which is the most tedious experience I've had (aside from walking weights up a stairwell to set up a swing stage)
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Theyre not too hard to fix, but you do need to remove both end bearings. But once you've done it - well.. I've never had to replace one.
There is a concertina version that just wraps around and uses a zip to attach, but I can't remember what it's called. But not as good as the spirals. Same as really good way covers as there's almost no way for stuff to get inside. And easy to clean - just pull them back - any rubbish just gets forced off.. Just keep them oiled.
Been used in Europe since at least the 60s.. One of my lathes is slightly later, but had them from new - the screw still looks like new.
There is a concertina version that just wraps around and uses a zip to attach, but I can't remember what it's called. But not as good as the spirals. Same as really good way covers as there's almost no way for stuff to get inside. And easy to clean - just pull them back - any rubbish just gets forced off.. Just keep them oiled.
Been used in Europe since at least the 60s.. One of my lathes is slightly later, but had them from new - the screw still looks like new.