UC300ETH-5LPT and 0-10v Spindle Controller Not Working

[jackaroo]

Hi all,

I've recently built a CNC machine for a school project, the machine uses a UC300ETH-5LPT controller and works great, extremely quiet, quick, and repeatable movements. I will probably put a post up later showing off the machine, but not yet.

The issue that I've been having is that I recently went to purchase a spindle, I wanted to buy a 1.5Kw 240VAC spindle (I'm from Australia), however just before I went to purchase the spindle and VFD the supplier went out of stock and won't be back in stock for a little while, and because it's a school project I need it working nowish. So I purchased a 400w DC spindle from another supplier to use for now and for marking then later I'll put the larger spindle on for personal use.

The spindle comes with a potentiometer for controlling the speed and originally this worked fine, I however wanted to control the speed via the software and programs. So I loaded up UCCNC, went into Settings > Spindle, set the PWM spindle to active then went into IO-SETUP and set the spindle to analog port setting to analog 1. I then verified this was working with a multimeter and it was all good. (0% = 0v 50% = 4.98v 100% = 9.96v).

Then I connected the analog port to the spindle controller potentiometer input, and connected a ground between the analog port and the controller before connecting power. The spindle then went straight to full speed, I left it running full while the software loaded up. Once in the software I ran `M106 P255` to set the spindle to "100%" and the spindle turned off. (Obviously the controller is inverted or something). However the spindle won't do partial speeds, so even "50%" (M106 P128) turns the spindle off.

Does anyone have any solution to these problems?

The new spindle: https://www.makerstore.com.au/product/bun-spin-400/

Thanks in advance,
Jack

[ger21]

Set your min and max speeds, and use the S word to set spindle speeds.
S6000
S10000
...

[jackaroo]

Tried that with no luck.

The spindle controller has 5v as spindle stopped and 0v as spindle full speed.
The UCCNC controller is setup so that it outputs 0v for full speed and 5v for stopped.

Both voltages have been verified with a multimeter

When I connect them to each other however that’s when they don’t work

[jackaroo]

Tried that with no luck.

The spindle controller has 5v as spindle stopped and 0v as spindle full speed.
The UCCNC controller is setup so that it outputs 0v for full speed and 5v for stopped.

Both voltages have been verified with a multimeter

When I connect them to each other however that’s when they don’t work

[thegreatwaldo]

Hi Jackaroo
This is a long shot but is the controller putting out AC or DC volts ?
Cheers
Andrew

[Dazp1976]

Tried that with no luck.

The spindle controller has 5v as spindle stopped and 0v as spindle full speed.
The UCCNC controller is setup so that it outputs 0v for full speed and 5v for stopped.

Both voltages have been verified with a multimeter

When I connect them to each other however that’s when they don’t work

What about toggling the active high / active low check box for spindle on the Spindle setup page?. (PWM Pin). With most boards etc this reverses how the 0v/5v analog acts in regards to full or stopped.

Do you have a wiring diagram for your spindles vfd?.

[jackaroo]

Hi Jackaroo
This is a long shot but is the controller putting out AC or DC volts ?
Cheers
Andrew

The uccnc controller outputs DC. The spindle controller takes DC in and gives DC out. I would’ve like a 3phase spindle but none in stock in time…

Tried that with no luck.

The spindle controller has 5v as spindle stopped and 0v as spindle full speed.
The UCCNC controller is setup so that it outputs 0v for full speed and 5v for stopped.

Both voltages have been verified with a multimeter

When I connect them to each other however that’s when they don’t work

What about toggling the active high / active low check box for spindle on the Spindle setup page?. (PWM Pin). With most boards etc this reverses how the 0v/5v analog acts in regards to full or stopped.

Do you have a wiring diagram for your spindles vfd?.

I have toggled the active high/low multiple times with no real difference.

Tomorrow I’m hoping to get an oscilloscope onto the signals to verify them because the software says they are correct but whether the hardware has a different idea or not.

[ysonic]

I have the same question. Do you fix it?