Starting another conversion Harrison L5a

Well got everything running.

now waiting for new ball screws.

I have over .030 backlash on the acme screw so time to change it out.

They should be here on the 8th, so should have them all remachined and installed on the 10th or the 11th.

Wish me luck

New update

I have the ball screw in and my backlash is about .002 so much better. I will add in a backlash for it.

now the problem.

I wired in an encoder on the spindle. I have not been able to read any output to the pins in hal scope at all.

I am hoping someone will see what I did wrong..

I encuded my hal and ini files and some pics.

I have channel a to pin 10

channel b to pin 11

index to pin 12

and power and ground to the card power and ground points +5v and gnd.

The obvious thing I see is in your hal file you have A B and Z connected to pins 12, 13, and 15, but here at the card you have it wired 10, 11, &12.

opps will try a quick recheck on that and change it around.

ok reset the pins. I'm getting speed readings but not right.

I reset the encoder to 100 in the hal file

now I have a speed reading but it is way off

at 42 rpm it displays apx. 180
at 960 it is 3800 apx.

also no reading from the index on the encoder.

What is your encoders counts/rev?

If you have a 100 line encoder connected 1:1 with your spindle, it was probably right when you had it at 400 before.

Since your reading the encoder with the parallel port you also have to remember that you won't be able to read the encoder faster than you can read the parallel port (which is read at your base thread speed).

ok will try the 400.

any idea on why the index does not read ????

How are you looking for it?

ok with the encoder set to 400 here are my results

gear speed displayed

42 48
276 306

60 68
392 431

96 105
614 672


150 165
960 1006

my machine has 4 speeds hi and low for each.

I am wondering if the encoder might ne right and the gear speed from the machine might be off.