Immediate Z error when home after restart

I got a Z error while a project was running and actively cutting, Z was constant.
I tried to home that machine and got the same Z error as soon as it started homing after the double tap.
I had the braking Z motor on and changed back to the factory motor to see if that was the issue. No change.
I removed the home requirement when restarting and both X and Y can be moved manually.
I have checked the wire connections, all are fine.

Any ideas?

I’d first check the state of the Z home sensor, on the F1 screen. And then make sure that it’s clean, and not in direct sunlight.

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Not in sunlight
clean
The light is red, when i a manually break the beam the light goes off.
This tripped during a carve yesterday with no apparent fault or issue.
Multiple power cycles of the controler.

F1 shows
Z Alarm is High
Z Home Sensor is Low
After Controller restart Z Alarm still shows high

I have no direct experience troubleshooting Masso motor alarms, but hopefully this Masso troubledshooting guide can help you out.

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Issue solved…
7:04 PDT Emailed Support
7:09 Support replied to my email with suggestions. Check connectors, pins and wires take video
7:47 replied that all connectors and wires looked good uploaded video
9:43 received text from Mitz offering a FaceTime call
10:05 FaceTime with Mitz. Showed machine an issue. Solution was to select the Z alarm item and press the spacebar to clear the alarm. Was able to home the machine…

Great service from OneFinity and Mitz.

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That’s great news, and thanks for closing the loop. That alarm-clearing process is good to know.

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Here is the faq to clear alarms

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The real solution was a loose power connector on the Z motor. Voltage check covered in the article below identified the issue. I added electrical tape side to side over the connectors and the problem was solved,

This MASSO article pointed me to the ultimate issue and solution https://docs.masso.com.au/wiring-and-setup/setup-and-calibration/axis-servo-stepper-examples/masso-stepper/Alarms?ln=en

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