Search:

Hi,

I would like control a step and direction driver for a dc servo from a pwm signal intended to control a hydraulic flow control valve, I do not need the direction signal. 1 direction with speed...

Hi,

I have an application which requires precise speed and position control of 8 identical servo motors and drives, to get the 35rpm I require I have bee advised I need to just connect the step...

Thankyou for the reply jim

The reason i am being non specific is i have had a hell of a time getting technical support to talk to me about it, they simply say take it to a hypertherm dealer,...

Hi,

I have a problem with my older transformer type power supply, i have 40 a and 100a consumables all genuine i know what i am doing.

The cut speeds for 40 a are fine but at 100a cut speeds...

Thanks for the reply jim

Presumably the duramax machine torch and hand torch cables are compatable?

Matt

Hi,

Ive just started cutting some 30mm steel plate with propane lately with reasonable results but i want to try to improve, im using haris nozzles, the vvc high speed type.

For the correct...

Thanks erik, thats the most useful info ive heard in a long while!

I certainly havent noticed the drives or the power supply running hot but i dont often run at high speeds for a long time.
...

Im not really in a position to be shy, i need help!

My gantry is an old esab tracing machine cut down, it is about 7 feet wide, with two steel wheel running one side on top of a piece of machined...

Thanks Erick

I followed your thread on the encoders and tried the same but it made no difference to me.

I have also tried increasing the gain a lot to see if it provides the response I would...

Hi,

I have a machine under Mach control at the moment, I use whale 3drives and ahdbb, dc brushed servos and adjustable resolution encoders.

I aim for 50-80 steps/mm, rapids in the 10m/min...

Thanks for the reply

What reduction would you use With the 750w motors? I'm using a 12t 2.5mod spur gear.

What benefits would using the new drive bring apart from the extra rpm range?

Matt

Hi

I have a large plasma table which is currently running on dc servos with drives from cncdrive.com and basically im fed up with the poor performance of the drives, but thats another story.

I...

Hi Erik,

Very interesting thread, your problems sound similar to mine, i tried some more tests this evening.

With the damping at max value my gain can be no higher than 2000 before oscillations...

Thanks alot erik

I will try retuning with als notes and check the max error

Hi erik

Yes im using servo config to

What i was meaning was what other motion controllers would close the pid loop outside the drive and allow for perhaps better tuning flexibility, although...

Interesting

Sort of glad to hear someone else has the same trouble,its likethe damping is insufficient and the reason the following error is large is because the gainis not sufficient to keep it...

Al,

In your opinion does the motion controller make an appreciable difference to performance over the system i am using?

Im using whale drives from cncdrives.com, i use mach 3 through a pp on an old pc, my error analysis software for the drrives shows an error of only a few steps, i foget my resolution but its less...

Hi al

Do you have any suggestions as to how i can work out what is limiting my performance, i have been testing with a pen and paper but i have no idea where to go next

Matt

Thanks al

What kind of power/torque were the motors rated at?

Matt

Hi al,

Thanks for the reply,i d be really interested to hear more details of what motors and gearboxes you used, what drives and also what results you managed to achieve, id be very greatful if...

Hi,

I have an old esab gas cutting gantry which i have modified for cnc, i doubled up the motors on the x axis and left the y alone.

I got asked to cut some really fine parts the other day and...

Hi,

Im looking to get the views of plasma users on my set up/ tuning.

I have an old boc falcon which i have fitted up for cnc with mach, i have two 250w dc servos on the x and one on the y,...

Hi Guys,

Ive never really done much mechanised oxy fuel cutting before this week but my plasma has failed and ive been using the gas to make up for it and ive found a few things id like to ask...

Hi,

Just wondering if anyone has a post processor that works for mach, i found a few questions about it when i searched but no real concrete answers, i have trouble with the i and j with the burny...

Hi,

Ive always struggled to reach the listed cut speeds with my max100, i have tried a number of things to cure it but never really got to the bottom of it, ive changed the main contactor on...

Hi,,
Im not sure if im posting in the right section but hopefully people can help anyway.

I have built a diy mill, working area 700mm x 400mm x 250mm with a mini mill spiindle from lms, a belt...

Veteq,

Is there any chance you could let us know the size of the basalt, quartz sand and filler sand particles please?

Matt

Thanks for the reply al.

I found my info here:

http://www.transaus.com.au/files/TA_Servo_DC_Baldor.pdf

It lists them as having been replaced by mt4535ctycn

In what respect do you mean...

The manufacturer is baldor, the model is sd35-30-a1-a11

I also have a pair of mk2 gemdrives and the power supply module, i presume thye will be analogue rather than step/dir?

The max terminal...