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Author Topic: Mach3 BOB with AMB 1400 DI ?  (Read 1009 times)

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Mach3 BOB with AMB 1400 DI ?
« on: January 11, 2022, 09:24:30 AM »
Hello,

Has someone managed to connect an AMB (Kress) 1400 DI (digital interface) with the Mach3 breakout board and make it work?

The AMB digital interface has three wires:

- the 24V (brown, power supply)
- the 0V (white, ground)
- the 0-10V (green)
- 220V alimentation

The 220V alim obviously goes into sector, but then I'm not sure how to connect the brown, white and green wires to the Mach3 BOB.

The white wire may go to the 24V ground (DCM) and the brown into the 24V as shown in the pic below, but then the green 0-10V (which determines spindle speed) would need some DC output, which I don't know how to provide from this board, and I don't know how to control it from the program.

Here's a possibility for the brown and white wires: https://postimg.cc/mc3Zrvw0

The green one would go in either AVI or ACM input, but these are not giving out DC (which is what the green wire needs I think)...

I've looked everywhere online, even on the buildyourcnc site, but this operation isn't explained anywhere.
Thanks for your much appreciated help

AMB 1400 DI: https://www.amb-elektrik.de/media/pdf/2a/d6/16/41501_Beiblatt_Fra-smotor_Portalsteuerung_DE-EN.pdf
Mach3 BOB: https://postimg.cc/mc3Zrvw0
Re: Mach3 BOB with AMB 1400 DI ?
« Reply #1 on: January 08, 2023, 04:32:21 PM »
I Have the same problem.
Did you solve it ?
how did you connect the AMB to the BOB ?

best regards Dillian
Re: Mach3 BOB with AMB 1400 DI ?
« Reply #2 on: January 09, 2023, 03:42:17 AM »
hey Dillian,
I bought a 10V power supply, and connected cables as follows:
- the + of the 10V power supply to the brown cable AND the 10V on the BOB
- the green to AVI
- the white to the - (minus) of the 10V power supply AND the ACM on the BOB.
Then as far the potentializer goes, I followed this video: https://www.youtube.com/watch?v=7fgqF04p3AM&list=PL-PSp2dRGWCi8YNu-s2Es1HtNJmyk_uFi&index=10
It works fine, I can set the speed of the spindle manually (not from the BOB) but that's fine for me.
Re: Mach3 BOB with AMB 1400 DI ?
« Reply #3 on: January 09, 2023, 06:42:49 AM »
https://embeddedtronicsblog.files.wordpress.com/2021/02/bsmceo4u-install-manual.pdf
...is a copy of the BoB manual.

https://embeddedtronicsblog.wordpress.com/2021/02/05/4-axis-mach3-controller/
...is a review of it.  It contains the following paragraph:

"10 Volt spindle output.
There is a seperate available 10 volt PWM that can be used to control spindle speed. The voltage output pins are between AVI and ACM ground screw terminals. For this to work, a 10 volt power supply must be connected to the 10V and GND terminals. This has better linearity than using one of the four output pins as PWM. The output signal is driven by a transistor which gives a cleaner looking square wave. If your spindle requires a 5 volt PWM, you can apply 5 volts to the 10V terminal instead. Many diode laser controllers are 5 volt PWM."

There are photos of the waveform at the output AVI which show that it is a PWM pulse train.  It looks like the Kress spindle needs a DC signal so this would need a smoothing circuit.  The pulse frequency looks like 1kHz so a time constant of say 100ms should do the job.  For this a series resistor from AVI to the top of a 100uF capacitor, with the other end connected to Gnd, and the 10v taken from the top of the capacitor, should do the job.  I can never understand why BoB manufacturers don't build this into the board in the first place.
Re: Mach3 BOB with AMB 1400 DI ?
« Reply #4 on: January 14, 2023, 05:31:39 AM »
Was this any help?  I spent 20 minutes or so gathering information that the OP could have found himself using Google, it would be nice to know if it was time well spent.