Messages

981

General Mach Discussion / Re: Display of analogue input?

« on: October 18, 2016, 02:53:15 PM »

It was set for 150% output so i just added a little scale factor in the VFD, display is now as accurate as i can get it

982

General Mach Discussion / Re: homing

« on: October 18, 2016, 02:17:58 PM »

AFIK, which isn't much it's all done by Mach.

983

General Mach Discussion / Advanced research.... ;)

« on: October 18, 2016, 10:19:28 AM »

Just looking ahead at present....

I see i can read the spindle angle on the CSMIO-ENC module with GetInput(84) which returns a value of 0-3600 (angle x 10)

Is there a way, using this info, to get the spindle to park in one position every time?

Easy with a servo as the controller has a "Park angle" built in but I only have a lowly VFD to play with

Just playing;)

984

General Mach Discussion / Re: Display of analogue input?

« on: October 18, 2016, 03:08:28 AM »

Yep, thats what i figured, i just need to get the exact output - 150% or 120%, have just mailed the supplier for verification as to which parameter sets the limit it would use. One manual states 150%, the full manual lists 120% 

Its an impressively simple little add-on though, the CSMIO is indeed a great little controller.

985

General Mach Discussion / Re: Display of analogue input?

« on: October 18, 2016, 02:56:57 AM »

Oh, it certainly ramps up

I just have to flick the spindle brake to get it to peak

The BP brake is what, about 5" dia by 5/8" tall? So that represents a massive load compared to a small cutter, you only have to bring it on lightly when running to get a full-power load for a second or two;)

986

General Mach Discussion / Re: Display of analogue input?

« on: October 18, 2016, 02:20:49 AM »

This sounds familiar, Hp, kW, Torque.....

I have no idea really, I just presumed that if the motor is rated 2.2kW and the output is showing 0-10v as 0-120% of 2.2kW then that must be the figure to use, I can switch the output to 0-120% of rated motor Amps instead if that is better?

Is that not the same as reading motor watts? Surely if the motor is flat-out then it makes no odds what you read as they will all be 100% motor rated values?

Is there a difference?

What is spindle load measured in ? Nm, kW, motor Amps??

Seems i have all values to play with so whats best ?

987

General Mach Discussion / Re: Display of analogue input?

« on: October 17, 2016, 03:06:59 PM »

Seems like it may be a typing error that caused the disparity in readings - the quick start manual i got the 150% output from does not match the full manual i just downloaded which states 120% output power.

Using 120% as max now gives me a divisor of 34.125 of the DAC input and a quick trial and error calculation gives me a display of 17.9% or thereabouts - almost spot-on

Will change the macro tomorrow.

988

General Mach Discussion / Re: Display of analogue input?

« on: October 17, 2016, 02:01:19 PM »

Nice, thanks.

will tweak the scaling factor in the vfd a little

989

General Mach Discussion / Re: Display of analogue input?

« on: October 17, 2016, 01:28:42 PM »

Well, that was too easy, almost a non-event

Programmed the vfd, hooked up the analogue output to the CSMIO, added the line to the macro-pump and updated the screen-set.

https://youtu.be/K8mDCgCgBZU

Not sure on scaling yet, if 2200W is 100%, what % is 400W??

990

General Mach Discussion / Re: Display of analogue input?

« on: October 17, 2016, 06:44:53 AM »

Nice

ta