[Talkiet]

Hi All... I just received a UB1/UC300ETH from CNCroom and I noticed it's a board revision 1.6 (dated 25/07/18 in handwriting on the board) but the manual online refers to PCB ver 1.5... I have had a general look and can't see anything different but wanted to make sure there was nothing I should be aware of. I'll check each pin for consistency as I connect of course - but can't hurt to check.

Is there a revision history somewhere?

Cheers - N

[ger21]

You'll need to ask CNC Room.

[vrasak]

Hi Talkiet,
The circuit and components of UB1 board version 1.5 and 1.6 is 100% the same.

But, there some improvements on bottom side of the board, some pads and vias are moved away from solder-bridge (SB). This prevents the excess solder bridges into nearby holes and vias. So, the users can solder the solder-bridge easily, without worry.

I also put one extra square fiducial mark on the corner of v1.6 board. This helps to detect wrong direction feeding for pick and place machine in the production process.

Thank you,
Weerasak

[Talkiet]

Thankyou for the very quick response. I suspected it would be a non-functional improvement but thought it best to check. I'm about to start swapping out the UCNCv4 board now so wish me luck :-)

I just got the license key as well (10 seconds ago!) so I am all set...

Cheers - N

[Spinweight]

1

[vectorsc]

What is a practical max step number for the uc300eth? I’m mostly interested in quieter operation of my machine. i have about a 5:1 ratio so at 800 steps per rev I have about 4000 steps per inch.

Would the unit handle 1600 or 3200 steps per rev (for 16000 pulses per inch)?

[OlfCNC]

What is a practical max step number for the uc300eth? I’m mostly interested in quieter operation of my machine. i have about a 5:1 ratio so at 800 steps per rev I have about 4000 steps per inch.

Would the unit handle 1600 or 3200 steps per rev (for 16000 pulses per inch)?

The max.step number is not a property of the UC300ETH, it is a property of your stepper motor drive.
The UC300ETH can do 400 000 steps per seconds per axis.
Knowing the steps per value for your axis and the max.velocity you want you can calculate if the 400 000 Hz is enough or if it is not but usually stepper drives can't even handle 400 000 Hz frequencies and this means that the bottleneck is the stepper drive and not the UC300ETH, because it can output a higher frequency than what the stepper drive can handle.

[ger21]

Yes, most stepper drives have a limit of 200Khz or less.

[vectorsc]

Thank you most helpful. My data says 200khz

[OlfCNC]

Then the UC300ETH can run the most out of your drive.

[vrasak]

Just got the UB1 board and need some help with setup please. I am not getting a variable voltage from the AO1 port.
It needs a 10V into AH1 but my VFD only has 15V available so I'm using an external 12V power supply but all that I'm getting out of AO1 is what I put into AH1 and does not change with spindle speed.
The K2 relay is working to start/stop the spindle with no speed control.
I have set the Analog1 solder bridge to both the ANA1 and Y401 side with the same behavior at both.
Any suggestions how I might get 0-10V out?

First, You need to select either ANA1 or Y401. you can't select both at the same time. The default value is Y401.

The LED status of AO1 will give a clue whether your configuration correct or not correct. On the UCCNC run screen, you need to enter and execute command "S10000 M3" in MDI (assumed 10000 is the maximum speed you gave in config>>axis setup>>spindle), then click the button[-] or [+] to override speed. At this point, you can see LED light dimmer or brighter depending on percentag of the override.

If the LED status of AO1 stay on or off. this means that the software configuration is wrong. If this the case, please follow the UB1 instruction manual, page 24.

You can use 15V from your VFD. The following instruction was given by ger21 and it appears on one of my product page.

https://www.cncroom.com/interface-ca...-05-12v-module
In UCCNC, the maximum voltage can be adjusted by changing the PWM max duty %. If you are seeing 11.8V at 100% PWM duty, reducing the max duty to 85% would give you approximately 10V.
(11.8V x 0.85) = 10V

Thank you for having my product in your hand.

[Spinweight]

Thank you for your priceless advice Vrasak. This problem seems impossible to diagnose without the help of experienced users.

I have set the solder bridge to ANA1 and connected the 15v from the VFD to AO1.
My setup was set with the UB1 UCCNC Profile from CNC room and matches every page of the manual.
The voltage at A01 does not change with spindle speed. It will go up with spindle start but does not change with speed.
When the wires are connected to the AO1, AH2 and AL2 the AO1 LED does not light up ever but AO2 stays on all the time although nothing is connected to AO2, AH2 or AL2.
None of the behaviors change if I connect the wires to the #2 set.

[vrasak]

From UB1 profile default setting. It will output PWM signal to both Y401 and Analog Ch2. So, you could get an analog signal from both AO1 and AO2.



Here is PWM analog duplication. It also sends PWM to analog ch2. You can change it to ch1 as well.


***Please upload your UCCNC current profile so I can help you to tackle the problem.

[Spinweight]

The problem I had was in my wiring harness connection. Wired VFD directly to UB1 and it worked perfectly.

Thank you for your help Weerasak.

[Phil_Par]

Hello everyone.

Recently I purchase the UC300ETH-UB1 from cncroom, for a homemade cnc I build.
I have 4 AM882,4 stepper motor 4nm each one, one 71volt psu I build.
One 24volt psu , proximity switches NPN NC type.
HY VFD with 2.2kw spindle and a 24 volt water pump.
Soooo....
I made this schematic and Weerasak from cncroom suggest me to post it here to get your opinion about the way I have connect everything.

I am counting on your experience!

Vfd is going to be connected according the second schematic.
Any opinion and suggestion count!

Thanks .
Nick.

Did your VFD worked with the wiring you provided? Is this how is supposed to be wired?
I have the same BOB and looking for info on how to wire it.
Thanks

[Phil_Par]

Is this wiring correct for a Huanyang VFD to the UB1?

AL2 TO ACM
AO2 TO VI
AH2 TO 10V
NO1 TO FOR
CM1 TO DCM
X104 TO FA - SOLDER BRIDGE REQ'D
GND TO FB

Thanks

[ger21]

I believe you want:

AL1 TO ACM
AO1 TO VI
AH1 TO 10V

with the PWM set to port 4 pin 1 (Y401).

It appears that AL2-AO2-AH2 use the 2nd analog output channel on the UC300ETH. So if you use those, you need to set Spindle PWM > Analog Channel 2 in UCCNC.


Not sure what you are using FA and FB for?

[Phil_Par]

Not sure what you are using FA and FB for?

Thanks for your response, Gerry. FA and FB will be used to work with my E-stop which is currently wired to x103. By briging X103 and X104 under the board, when I press the e-stop the Spindle will stop? Thats the idea, would it work?

[ger21]

Depends on how exactly you have everything wired.

FA/FB can be configured to cause an estop.

An Estop in UCCNC will stop the spindle by disabling the M3 relay output.

[Phil_Par]

Depends on how exactly you have everything wired.

FA/FB can be configured to cause an estop.

An Estop in UCCNC will stop the spindle by disabling the M3 relay output.

How can I configure Fa and Fb to cause an estop?
Or what is the best method to wire an estop?


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