Hi Tom,
Thanks for your response.
When I hit Home, X axis homes ok. When Z axis moves toward the home switch, it will randomly stop, with the DRO still counting. Shortly the DRO will stop and...
Type: Posts; User: Charles2
Hi Tom,
Thanks for your response.
When I hit Home, X axis homes ok. When Z axis moves toward the home switch, it will randomly stop, with the DRO still counting. Shortly the DRO will stop and...
Other priorities took me away from the lathe for a bit.
Now trying to figure out why some moves in Z axis stop along the way, with DRO still counting, then after a bit, Console shows "Following...
That did it. I had the shortcut going to KMotion434.
Private message sent.
Thanks
See attached
Hi Tom,
Will look at scope readings again.
New problem: When I try to Save/Compile/Download/Run a C program, I get a message:
DSP_KFLOP.out Date Stamp Doesn't match KFLOP Firmware
It says...
Hi Tom,
I may have something wrong in the scope setup. Using 10X on the probe.
Checked the 5V on Kanalog to Kanalog ground. See first image.
Checked the AMC drive Signal Ground to Kanalog...
Hi Tom,
As you suggested, I checked the AMC drive sig GND with the scope. Trying to remember the little I knew about using a scope. Looks like a lot of noise on the drive sig GND without moving...
Hi Tom,
Back on it again. Had to take a break. Tried the low pass filter. Didn't seem to have much effect. Didn't find an oscilloscope, but found and bought a Perytech DSO-U2200 USB Oscilloscope...
Hi Tom,
The speed variation of 3 RPM while grounded and .3 not grounded refers to the RPM reading fluctuations in a current state. I simply noticed that without grounding, the RPM was more steady...
Hi Tom,
Did you see the above tests with the battery box grounded to Kanalog?
Hi Tom,
I see USB isolators from $15 to $130. Do you have a preferred isolator for these systems?
Thanks
See attached picture of the "Battery Box"
461908
Sorry my chart cluttered up. I had it nicely spaced. I can redo it a different way if needed.
Hi Tom,
The battery box is homemade device that a friend used at his former job. It is simply a box containing a 9 volt battery, a variable resistor, a power switch, a polarity reversing switch,...
My Init file
Hi Tom,
Thanks for sticking with me on this.
More tests:
Connected spindle drive command wire to Kanalog ground (both wires). Spindle rotates at about 3 RPM. Jogging X or Z causes it to go...
Hi Tom,
Sorry to say, but the new Kanalog did not help. Spindle still responds to X and Z jogging. I have spent all day going over grounding, possible interference, and anything I could think of...
Hi Tom,
"If everything is connected and powered but the motor being Jogged is disconnected so there are no large motor currents then we do not see the shift. Correct?"
I just retested. With all...
Hi Tom,
You are correct. I was measuring to ground.
Reran tests as you suggested.
120 ohm resistor between Dac4 and spindle drive command wire. For voltage tests I measured from Kanalog...
Hi Tom,
Test 1. With spindle command wire connected to Dac4, voltage reading from Dac4 to Kanalog ground, and Dac4=0, I get 23mV, CCW rotation at 10 RPM.
While jogging Z- or +, I get -39.6mV ,...
Hi Tom,
Retested spindle input wire to Kanalog ground through meter and 120ohm resistor (closest I have to 100ohm). Checked 29mV static, then 14mV when jogged. Same results regardless of jog...
Hi Tom,
I have used Dac2,3,4,and 6 for the spindle, just trying to find a different result. Dac6 seems to have the least voltage with 0 commanded.
I too am suspicious of the meter. Not a nice...
Hi Tom,
Thinking about interference possibilities, I rerouted the spindle tach cable outside of the cabinet. No change. Spindle still reacts to axis movements.
Disconnected spindle encoder...
Hi Tom,
I must not have been clear. The 70mV difference was when jogging X and Z, read at the drive and at Kanalog Dac. The voltage at the spindle drive matches the voltage at Kanalog DAC.
With...
Hi Tom,
Retested DACs 0 and 1 with wires connected at Kanalog and motor wires disconnected at X and Z drives. Voltages recorded at DACs were within .02V of tests with DAC wires disconnected. No...
Hi Tom,
I ran the Kanalog tests last night, then spent some time writing it up to post. Seems it didn't submit. So I am rewriting. If it shows up twice you'll know why.
I need to tune the...
Hi Tom,
How is spindle zero position determined by KFLOP? I am don't remember assigning the spindle encoder marker anywhere. Thought that would come later. Will check Kanalog as you suggested.
...
When A+ was high, A- was low and when A+ was low, A- was high. When B+ was high, B- was low and when B+ was low, B- was high.
Any thoughts on what else could be causing this interference between...
Hi Tom,
I reloaded KMotion435f and restored the Tool Setup pages. Back to my normal.
Checked spindle encoder signals as instructed. A+ wire switches from 128mV to 3.30V, A- switches from 3.54V...
New problem. Started KMotion this morning. Looked normal. Started KMotionCNC. Message block reads "Unable to open Tool Table File". "C:\KMotion435f\KMotion\Data\" Hit ok. Cnc screen is not the way I...