Search found 342 matches

by cncsnw
Sat Jan 13, 2018 8:00 pm
Forum: Centroid Community CNC Support Forum
Topic: Encoder Basics
Replies: 35
Views: 32438

Re: Encoder Basics

lead and pitch are the same. ... Pitch is how far a screw advances in one turn. Just to be pedantic here: - Lead is how far a screw advances in one turn. - Pitch is the distance between successive thread crests. - They are the same for a single-start thread (the vast majority of threads you will en...
by cncsnw
Mon Jan 08, 2018 3:23 am
Forum: Centroid Community CNC Support Forum
Topic: glass scale on MPG input/OAK
Replies: 3
Views: 75

Re: glass scale on MPG input/OAK

The DQOA column indicates what errors have been detected on that encoder. I don't know off the top of my head what 'O' and 'A' signify, but 'D' and 'Q' are for Differential and Quadrature errors. The 1 in the D column for your W encoder indicates a differential error: either your A and /A pair, or y...
by cncsnw
Fri Jan 05, 2018 10:10 pm
Forum: Centroid Community CNC Support Forum
Topic: Re-running System Test CNC11
Replies: 2
Views: 63

Re: Re-running System Test CNC11

F1/Setup -> F3/Config -> F5/Test ?
by cncsnw
Thu Jan 04, 2018 12:26 am
Forum: Centroid Community CNC Support Forum
Topic: dc servos Axis jumping when moving <<Resolved, tune motors.>>
Replies: 16
Views: 206

Re: Axis jumping when moving

On a related note, you have the "full power without motion" stall condition defeated.

You should change Machine Parameter 62 from a value of 115 to a value of 90.
by cncsnw
Thu Jan 04, 2018 12:15 am
Forum: Centroid Community CNC Support Forum
Topic: dc servos Axis jumping when moving <<Resolved, tune motors.>>
Replies: 16
Views: 206

Re: Axis jumping when moving

Because you have a Revolution machine, but a Centroid print, you have to take what you find on the print with a grain of salt. Revolution designed their own cabinet wiring, different from what the Centroid factory did. The square black device is a bridge rectifier. It is making sort-of-DC out of an ...
by cncsnw
Wed Jan 03, 2018 5:11 pm
Forum: Centroid Community CNC Support Forum
Topic: dc servos Axis jumping when moving <<Resolved, tune motors.>>
Replies: 16
Views: 206

Re: Axis jumping when moving

Before buying a new encoder, you might try to expand upon "freeze up", "jump", and "shacking the hole machine" for us. Does the encoder position for the Z axis (as shown under "Abs Pos" on the PID Configuration screen) count consistently when you turn the Z axis motor by hand? Does the '*' next to t...
by cncsnw
Wed Jan 03, 2018 4:27 pm
Forum: Centroid Community CNC Support Forum
Topic: dc servos Axis jumping when moving <<Resolved, tune motors.>>
Replies: 16
Views: 206

Re: Axis jumping when moving

Do you think the issue might be related to the many "407 ... limit tripped" conditions reported in your error message log? Or to the couple "9030 SPINDLE FAULT" messages? Use the Alt-i PLC Diagnostic display to see whether all six limit inputs (INP1 - INP6) are green, and stay green except when the ...
by cncsnw
Tue Jan 02, 2018 6:02 pm
Forum: Centroid Community CNC Support Forum
Topic: Do scales need an index? << answered >>
Replies: 1
Views: 76

Re: Do scales need an index?

I think the MPG encoder input is number 15 (not 12).

No, the scale does not need an index pulse.

The control will home using the motor encoder and its index pulse. Only after it is done homing will it enable the scale feedback.
by cncsnw
Fri Dec 29, 2017 12:14 am
Forum: Centroid Community CNC Support Forum
Topic: Can the Oak run an umbrella?
Replies: 5
Views: 134

Re: Can the Oak run an umbrella?

You will be struggling to make it all fit without a PLCADD1616, but if you really have to, you might be able to make it work. Assuming that you don't need mist coolant, don't allow resetting spindle drive faults, and use single-coil (spring-return) solenoids for the two pneumatic motions of the caro...
by cncsnw
Thu Dec 28, 2017 4:07 pm
Forum: Centroid Acorn CNC Controller
Topic: Electrical power question
Replies: 1
Views: 69

Re: Electrical power question

Check the specs on your PC and monitor. Many now have universal power supplies that will accept 240VAC input. If 120VAC is required, it is about a wash whether you put in a small (maybe 500VA) control power transformer, or run a 4-wire service. If there is enough cabinet space, I would go with the t...