Hi Team, I have an inconsistent issue with my Avid Pro 60120 with Nema 34’s. I’ve had the machine built for over a year and this error happens every 8th-10th run on the same g code. The error: my z axis will finish a pass, arrive at the .25 plunge z, try to move to safe z, but overloads the motor,…

Update: the machine did start to move towards safe z, did not make it and lost steps, and then plunged into the table. I’m thinking the wire could be compromised, but testing them now. Swapping the Z and X motor wires - shot in the dark.

Have you considered the issues and suggestions in this thread: [image] Help resolving a Z-Axis issue Folks, I wonder if anyone can give me any hints as to what may be going on. I’m running a program, everything is going fine! Then the spindle retracts to move…and sudd…

Here’s another one: [image] Lost Z-Axis By 5/8" In One Movement? I was cutting this piece and partway through it completely lost the Z, and was ‘zero-ed’ about 5/8" below where I zero-ed it (relative to the bed). The collet was contacting the material, so it was not a ca…

Thank you Steven. I’m checking the coupling, the brake, grounding the dust collection, ensuring the connection cables are connected and not touched during use. The issue did not occur on x axis, so wires are good.

[image] WIGGINSCNC: My Z acceleration is set at 6in/sec^2, the feed rate is 20, a What is the plunge rate, and what is the accel setting for X and Y axis? I have heard of issues if the Axis’ are very different. your feed and Z accel are pretty slow, so I was just checking to see that X and …

Thank you. My x & y are much different than my Z. I’m taking the motor off and checking the coupling/axis brake ASAP. I think the brake could be failing - the z is easy to pull down, but extremely difficult to lift with the motors off. Like way too difficult, since my 60 year old dad can push his u…

[image] WIGGINSCNC: the z is easy to pull down, but extremely difficult to lift with the motors off. Ya, that doesn’t sound right.

If the brake for the ball screw is going to fail they tend to fail quickly (as in new as oppose to old). It will result in losing steps but only in the positive direction. So the Z will plunge deeper and deeper. Also make sure the coupling is tight for the motor to ball screw (both halves). Sometim…

I tried to do a air pass of surfacing my table with no bits and 4 inches above the table by the time I reached the last two passes the router was rubbing the table does this sound like what’s happening to you?

AVID PRO Acceleration/Plunge issue

General Chat

Stephen May 22, 2023, 8:03pm 4

Here’s another one:

Topic		Replies	Views
Lost Z-Axis By 5/8" In One Movement? General Chat	9	545	December 30, 2022
Z Movement loosing steps, reproducable any height, with this code General Chat	13	519	April 22, 2024
Z-Axis "Falling" Incrementally General Chat	14	826	June 6, 2024
Problem with Z Axis - Suddenly goes too deep mid-project General Chat z-axis	13	639	February 22, 2025
Z axis problems General Chat	3	504	October 30, 2022

AVID PRO Acceleration/Plunge issue

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