[Ntl]

Sounds like Teknic is telling you to do the same thing that I posted. I wonder what olfcnc has to say now?

I didn't read what some of the other options were, but if the relay is the easiest and works you might want to just use it. Otherwise like Gerry said spend some time searching the web for the other solutions.

Dan

[ger21]

It does measure exactly 4.97 Volts.

The Pin 10 does change state.

If the LED is changing in UCCNC, then it sounds like it's working.

So if the servo faults, then you should see 0V between pin 10 and +5V on the breakout board (instead of 4.97V), and you should see the LED change in UCCNC.

You can switch COM pins to GND or to 5V.
COM to GND disengaged the servos.
COM to 5V engages the servos but HLFB doesn't work.

This sounds like you have pin 10 wired to the Enable circuit, rather than HLFB.
HLFB is an output, and should not enable and disable the servos.

[davida1234]

So if the servo faults, then you should see 0V between pin 10 and +5V on the breakout board (instead of 4.97V), and you should see the LED change in UCCNC.

I will check that.

This sounds like you have pin 10 wired to the Enable circuit, rather than HLFB.
HLFB is an output, and should not enable and disable the servos.

I think that the servos need 5V to be enabled.
COM to GND or 5V is for all the logic board, not just pin 10.

[davida1234]

Sounds like Teknic is telling you to do the same thing that I posted.

Looks like it. Hate to re-design the PCB.

[ger21]

Oh, I thought you were just moving the wire from +5V to Ground.

[davida1234]

Oh, I thought you were just moving the wire from +5V to Ground.

No, there is a jumper on the BoB for setting COM to either GND or 5V for the whole board.

[OlfCNC]

So I'm not sure if you read what I posted? Maybe you don't want to accept what could be causing the problem and what one solution could be? Don't really know since you keep saying it's a software setting for his clearpaths. Maybe it is, but it doesn't sound like it.

Feel free to give him your solution to getting the HGLB to function properly with his breakout board. So far all you are doing is telling him I'm wrong and or don't know what I'm talking about. Maybe I'm wrong with what's going on, but at least I'm giving him potentially useful information.

If it's not a matter of the controller which has been determined, he needs to figure out the work around somehow. If it's a resistance problem with a different controller. Logic would tell me that he could be having a resistance problem as well. There is a solution to the resistance issue in the screenshot I posted for a different controller.

I'm trying to help with finding a solution to his problem by giving him some information I have found. What I posted described his problem what it's caused by and a solution. Granted it's a different controller, but same issue.

Someone with his hardware would need to tell him how solve the problem. According to what I posted they're using 24v not 5v. I have said I don't use his hardware so don't know if it's compatible with the clearpaths. Maybe he needs a UCCNC branded board and the support that it comes with IDK.

I would tend to think that the fix would be similar regardless of the controller.


Thanks,
Dan

You don't seems to understand what the issue is.
Again, it is not cnc control software related problem that a servo drive does not output a signal. That has nothing to do with the cnc controller or the board used.
Even if he has no cnc control board and software at all that relay would switch or not switch, work or not work.

If it is a relay output as you said then David could measure resisistance (Ohms) between it's contactors and when it's open then he will read about infinate Ohms and when closed then he will read about 0 Ohms.
He does not have to connect anything to the relay then, so again no matter what cnc controller board and software he has.
And as soon as he can make the relay to work then he can simply connect it to any cnc controller board, no matter if it is a uccnc, a mach3 or an acorn board or a chinese one.
Ofcourse at that point the required connections could differ, but he has to reach to the point first when that relay in his servo drive starts working and again for that he does not need any cnc control boards, this problem is fully independent of that.

[wmgeorge]

Its looks like the internal resistance of the contacts are the issue.

[davida1234]

So if the servo faults, then you should see 0V between pin 10 and +5V on the breakout board (instead of 4.97V), and you should see the LED change in UCCNC.

With the system on, all servos enabled, +5V to Pin 10 reads 4.97 Volts.
LED #10 on diagnostics is black.


After one of the servos stalls (disabled), +5V to Pin 10 still reads 4.97 Volts.
LED #10 on diagnostics is still black.

(Sorry about my statement about LED changing state, I stated wrong.)

[ger21]

After one of the servos stalls (disabled), +5V to Pin 10 still reads 4.97 Volts.
LED #10 on diagnostics is still black.

The the HLFB circuit is not working.

Try taking the breakout board out of the equation. Just measure continuity through the circuit. It should have continuity when enabled, and no continuity when a servo faults. If you see this behavior, then it's an issue with the breakout board. Maybe contact Arturo at CNC4PC and see if he has any ideas.

[davida1234]

The the HLFB circuit is not working.

Try taking the breakout board out of the equation. Just measure continuity through the circuit. It should have continuity when enabled, and no continuity when a servo faults.

The HLFB loop needs +5V to become active. I don't know how you can measure continuity with voltage in the loop.

Without power on, continuity was zero both in engaged and faulted position.
I still tried to measure continuity with voltage on but the meter did not beep with or without servo at fault.

[mactec54]

You don't seems to understand what the issue is.
Again, it is not cnc control software related problem that a servo drive does not output a signal. That has nothing to do with the cnc controller or the board used.
Even if he has no cnc control board and software at all that relay would switch or not switch, work or not work.

If it is a relay output as you said then David could measure resisistance (Ohms) between it's contactors and when it's open then he will read about infinate Ohms and when closed then he will read about 0 Ohms.
He does not have to connect anything to the relay then, so again no matter what cnc controller board and software he has.
And as soon as he can make the relay to work then he can simply connect it to any cnc controller board, no matter if it is a uccnc, a mach3 or an acorn board or a chinese one.
Ofcourse at that point the required connections could differ, but he has to reach to the point first when that relay in his servo drive starts working and again for that he does not need any cnc control boards, this problem is fully independent of that.

Why do you and everyone keep talking about Relays, these motor drives and I/O do not have any Relays, in the motor package there seems to be a lot of posts which have been total confusion and incorrect information about the wiring of these ClearParth motor Drive I/O


They just have very simple Transistors which can be sinking or sourcing and is what is expected for something like this, they don't output anything they are opened or closed depending on the signal input state

[ger21]

Seems like the HLFB is not working properly, or not configured correctly. Based on what I've read, you shouln't even be seeing 5V, as each drive (motor) should have a 0.5V voltage drop. This is even mentioned in the specs.
And the fact that you still see 5V with a motor disabled means something is not right.

[Ntl]

Would he see a voltage drop since he's using the minimum required voltage? The voltage requirement is 5-24v.

[ger21]

According to what I read, both at another forum, and in the Clearpath manual.

- - - Updated - - -

And if he's at 4.97V, then he's actually below the minimum

[davida1234]

According to the document Teknic sent me and I posted here, it is 0.25 Voltage drop and 62 Ohms per servos

Attachment 419678

[davida1234]

I mentioned to Teknic about this thread and how everybody is trying to help.
They requested more info and I prepared for them thic PCB diagram:

[Arjay]

I mentioned to Teknic about this thread and how everybody is trying to help.
They requested more info and I prepared for them thic PCB diagram:

David, looks like a flux capacitor issue.

[davida1234]

David, looks like a flux capacitor issue.

Flux capacitor where?

[Ntl]

David, looks like a flux capacitor issue.

LOL.