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by TomKerekes
Thu Jul 11, 2024 5:21 pm
Forum: Tuning Servos
Topic: more spindle servo tuning questions
Replies: 15
Views: 140

Re: more spindle servo tuning questions

the trouble i think started right when i got the custom screen done. :? i think it was running great with the "basic 3 axis" screen The Screen having an effect on the Spindle Stability would be very strange. The obvious thing to do would be to switch back to to the basic screen. do you have any rec...
by TomKerekes
Wed Jul 10, 2024 5:24 pm
Forum: Hardware Interface Issues
Topic: The FPGA(STEP_PULSE_LENGTH_ADD) command is not having any effect.
Replies: 3
Views: 39

Re: The FPGA(STEP_PULSE_LENGTH_ADD) command is not having any effect.

Hi,

We can normally schedule within several days. We like to use TightVNC to connect to the system. Please download and install before any session. Have a good trip.
by TomKerekes
Wed Jul 10, 2024 5:12 am
Forum: Configuration Issues
Topic: IO number for 2nd KStep's Opto INs and Relays
Replies: 1
Views: 21

Re: IO number for 2nd KStep's Opto INs and Relays

The extra IO on the 2nd KStep are not useable. Only the motor driver outputs are available.
by TomKerekes
Wed Jul 10, 2024 5:09 am
Forum: Hardware Interface Issues
Topic: KStep J1 Motor Power
Replies: 1
Views: 11

Re: KStep J1 Motor Power

Power Supply current is not the same as motor currents. You might read this.

But yes it is best to wire the supply to both terminals to reduce the current through each terminal.

The supply switched to the motors will still be the supply voltage. 24V in your case.
by TomKerekes
Wed Jul 10, 2024 12:57 am
Forum: Hardware Interface Issues
Topic: The FPGA(STEP_PULSE_LENGTH_ADD) command is not having any effect.
Replies: 3
Views: 39

Re: The FPGA(STEP_PULSE_LENGTH_ADD) command is not having any effect.

Hi, Our KFLOP has only one Step Pulse Width setting for all 8 channels. Our Kogna Controller has the capability of setting the pulse width independently for each Step/Direction Generator. Are you sure you have a KFLOP and not a Kogna? It should not be possible to set different pulse widths on KFLOP....
by TomKerekes
Wed Jul 10, 2024 12:49 am
Forum: Hardware Interface Issues
Topic: Not getting 3v3 PWM output on JP6 pin 5 (IO26)
Replies: 5
Views: 22

Re: Not getting 3v3 PWM output on JP6 pin 5 (IO26)

Is the actual driving chip TTL, or is it CMOS pretending to be TTL? I assumed when designing our breakout board that it was CMOS and hence high and low levels would be very close to supply if terminated by infinite impedance (regardless of conservative manufacturer specs). But I guess if it was a t...
by TomKerekes
Tue Jul 09, 2024 6:01 pm
Forum: Hardware Interface Issues
Topic: Not getting 3v3 PWM output on JP6 pin 5 (IO26)
Replies: 5
Views: 22

Re: Not getting 3v3 PWM output on JP6 pin 5 (IO26)

Hi SJH, The PWM outputs are always push-pull type outputs. The high level voltage is relatively low because those IO have 150 Ohm termination for use as inputs. There is no specification on the high/low levels other than they meet minimum LVTTL requirements and are not necessarily consistent. The on...
by TomKerekes
Tue Jul 09, 2024 5:38 pm
Forum: Hardware Interface Issues
Topic: KFlop PWM output
Replies: 3
Views: 26

Re: KFlop PWM output

I'm not sure what "OpAmp boards" are. But it seems your Spindle needs an analog signal for speed control? Or can it accept a PWM signal? KFLOP has 8 8-bit PWM signals available on its JP6 connector. These are 3.3V LVTTL signals. Software can be used to control 2 Konnect Outputs with a simple RC Circ...
by TomKerekes
Mon Jul 08, 2024 12:31 am
Forum: KMotionCNC, G Code Files, Offsets, Post Process
Topic: KMotion CNC 5.3.3
Replies: 4
Views: 43

Re: KMotion CNC 5.3.3

Hi Tim,

That is a good workaround but Axes >= 8 should work correctly. This will be fixed in the next Version.
by TomKerekes
Sat Jul 06, 2024 4:14 pm
Forum: Bug Reports
Topic: Konnect causes reboot
Replies: 1
Views: 31

Re: Konnect causes reboot

Hi,

We are not able to reproduce this.

How are you powering the +5V for Kogna/KStep/Konnect? USB Power is probably not sufficient.

Are there any connections to any of the boards?