7i77 to AC Yaskawa Drive assistance.

I'm enabling the motors (sending motor power to the drive) with this.

# --- MACHINE-IS-ENABLED ---
net machine-is-enabled hm2_7i92.0.7i77.0.0.output-09

NOT THIS

net estop-out hm2_7i92.0.7i77.0.0.output-08

Isn't that right? That is why my motors are constantly being turned off by LinuxCNC.

I'm just going to go new and start over right. I'm out of ideas.

Replacing all the drives and motors with DMM Dyn4. Ripping out most all the wiring in the control cabinet and starting fresh and clean. I did not like how they had AC power lines ran close to the communication lines. And just general layout of things.

I've got a great frame and tracks, heavy power supplies, had already purchased real Z guides (not cheapo plasma ones). Just do it right from the start. so we can easily replace parts etc.

I do have a question though for me to consider while I wait for the new motors and drives to get here. These have absolute position available. Is this OK to use with Mesa 7i77? Definitively for the Z and possibly for the Y where I most likely will have more then one tool on I could see this as a nice feature for homing... OR just not worth the headaches getting setup?

Did you verify that you are getting encoder signals from the drives?

That seems to be the issue (you have analog output commanding the drives
but it looks like you have no feedback)

This could be as simple as a wiring mistake (differential encoder wiring has about 84 ways to wire ignoring power and most ways will not count...)

One way to check differential encoder signals with just a DVM, is to measure the voltage _across_ the A, /A and B, /B pins . The voltage across the pairs should always be >2V absolute (and should be positive and negative depending on the actual count. So by jogging the motor around you should see both states of both pins and you should never see a voltage lower than 2V absolute)


You can also check by looking at the encoder raw count pin with halmeter.. non changing counts or counts that alternate between 1 count up/down usually indicate encoder problems

No honestly I didn't... Already had a guy taking out the motors and drives for me.

I had checked wiring 20 times comparing it to what you had given me... I kind of think it was related to the C loop, as the docs on the drives state that if used... blah.. blah... blah... watch out for... blah... blah... I had tried to disconnect the C but that didn't seem to make any difference either.

The DMM drives only use A and B

I guess in summary the docs for the DMM drives are much simpler to follow, and my frustration with this over the past week peeked last night with no more ideas and a desire to just have all new stuff. I'm hopefully I can get right to tuning with the new equipment when it gets here.