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I have been having similar problems , i used parmon to check my parallel port ,it is available here Geek Hideout --> Parallel Port Monitor , a small programme that monitors the parallel port and you...

hello again ,I,m converting my tos milling machine to cnc ,I am using pacific science stepper motors and pac sci ma6410 drivers with opto isolators and i have installed mach3 as a controller . the...

i been trying to sort out my parallel port connection to the stepper driver , at first i thought it was mach3 , then i replaced the parallel cable the system worked for a while , then it packed in...

Managed to do without breakout board basic system working fine with mach3 a bit of a pain, but got there in the end had to replace my parallel cable , not enough current to operate the opto...

Well i never i 'got the bugger going , down loaded parmon a little program for checking the parallel port ,, checked all the pins for voltage and operation all ok but still the driver refused to...

Thank's for the input ,I've tried all that i can ,followed the video,s and I'm on my third computer , I get good pulse speeds nice flat line , but programme will not output at the parallel ports , my...

Tried everything to get mach 3 to work on my pc , i have given up, had enough i going to a build / obtain a pc that will run a linux based cnc controller.. derkiow

Thank's for the advice Mach3 still not working tried all the mentioned things to do .. Loads up ok driver loads ok , parallel port leds don,t light up ,if you run a gcode sequence it runs fine...

I am trying to use mach3 but i don't seem to any step or dir signals from my parallel port pins .... is there a way i can check that my parallel port is connected to my software .... when i go into...

looked up on the internet the workings of parallel port now ,, i understand 5v at the pins is ok and not the sign of a knackered port .... just got to figure out active low , active hi , ugh my...

Sorry if the above sound a bit abrupt was working on my drives too long , anyway the reason i ask is that my pci parallel port card is giving 5v on most of it's pins ,,is this right or is my card...

I am using pac sci ma6410 drivers , could someone look at the connections and tell me if they correct for direct connection to the parallel port , the manual is at the following link,,,,,, ...

i have three drives at 5amps so that will be 15amps and i have a 1kva transformer 45v @ 22amps my idea was to use 4 times 2200uf for each drive..derk

So is it safer to go up or down would 6600uf do or would i be better going to 8800uf .The reason i ask is that have some 2200uf capacitors already ,,,,and thanks for the replies derkiow

I have a 68volt rectified output that needs a bus capacitor of 7200uf , 91volt and 5amp ripple ,, if i can;t get the right size capacitor which way is it best to go, up or down in size (uf) ...

Thank's again for your input ,,, found the following transformer here in the uk
.....1kVA 230V 2 x 40V toroidal transformer...... for 63 GB pounds plus vat and delivery......totals at around 89 GB...

Thanks for the replies , so what size transformer do i need the max 1215va or a lot lower as alexthehun suggests. I worked out that 45v ac on the secondary would equate to 75v dc allowing for the...

has anyone got a recommendations as to the purchasing of 240volt to 45ish 1kva transformer for powering my stepper motors and their associated drives...i am based in the uk...derkiow

so a the transformer i would be looking for would 45volt at 27amp which equals 1215va is that correct ....derkiow

K32HMHK - LNK - NS - 00 pacsci stepper motors 2 stack bipolar 6.1 amps and 3.4volts ,,, 1580oz/in ....derkiow

I am trying to size up a transformer for my drivers pacsci ms6410's.Going of the following info what current spec do i use? rms or average current (ie 45 volts times rms current equals va rating or...

hi thanks for all of your replies .
i need 8x's 12v 200amp max current controller maybe a chopper circuit??? to drive my series wound dc motors (x8),,,, is this possible and pointers would be...

thank you for the your replies, i have been doing some looking into dc motors controllers and i have found that mosfets are available right up to 200amps (very expensive) but smaller sizes are...

balls apart, seriously is anyone out there who can help , can tackle most things but modern electronics are way over my capabilities , just been looking at radio spares site and they do some...

thanks for the replies....not any fork lift in the scrap yards where i live in the uk and ones i have found, parts are going for silly money. This project has to be cost effective , i want to save...

I have found mosfets that that can handle 84amps each and 500v for 30$ each, so the price is not too ba, just need a circuit diagram now can anyone help...........derkiow

hello forum ...
has any one got any idea where i could get hold of a diy circuit drawing for a controller that wil be used on an electric car handling 100 plus volts and any where up to 400...

found the sdpsi website and obtained some info from there , i have eight timing pulleys to make should be cncing soon .......all the best derk

hi forum . not sure where to post this thread
can anyone supply me with a profile (drawnig) for cutting the teeth on a htd timing pulley ,,,,,all the best derk

hi forum
would pacific science stepper drives 6410 be able to power these steppers,,,,,,,,derkiow