Anilam Crusader series M converting to Allin1DC

[Robert Meacham]

Google photos

Just received the conversion, getting my headwrapped around the wiring. Currently the main board, power supply and cap mounted. Looking at the transformer. I probed the current transformer here are the results. Not thinking it will work.

Probed with H terminals empty
Servo motors

[Robert Meacham]

Next question. My machine has 1 limit switch per axis, a normally closed 2 wire.

Looks like the schematic calls for 2 switches one at the + end and one at the - end. Could I wire 1 switch to both terminals so it would remove the common to both terminals no matter if it limits +or-?

[cncsnw]

Usually, the 'H' terminals are the primary taps (connected to the incoming AC service) and the 'X' terminals are the secondary taps (feeding the load).

Based on the jumpers that are almost visible in your picture, this transformer has dual primary windings, so that it could, for example, be tapped in parallel for a 120V supply; or in series for a 240V supply. Your measurements suggest that in either of those cases, the secondary voltage (X1 to X2) would be around 83VAC, which would be a good level to run through a bridge rectifier and capacitor to get a DC bus voltage around 120VDC (comfortably below the 140V rating of the motors).

It is, of course, possible to "back feed" a transformer, connecting the incoming service to the 'X' taps and connecting the load to the 'H' taps. Do you have reason to believe it was done that way in the original Anilam control?

[cncsnw]

You could wire one switch to both limit inputs for an axis, but I would not recommend that. FIrst, unless the machine has manual handwheels, you will have no way to move it back off of a tripped limit switch. Second, and more importantly, you would be unable to automatically home using the switches.

It is best to install a second set of switches (or replace the single-plunger switches with dual-plunger switches) so you can have independent plus and minus limits.

If that is too much trouble and expense, then you can wire and configure the one switch on each axis as one limit or the other. Choose which one it will be based on the direction you want to home in. For example, if you follow the prevailing Centroid practice for knee mills and bed mills, you would home X-, Y+ and Z+. So you would wire the X switch as the X- limit; the Y switch as the Y+ limit; and the Z switch as the Z+ limit. You would then enter software travel limits so that, once home has been found, each axis is prevented by the software from moving far enough to trip the switch at the opposite end of travel. You would need to use the limit defeater DIP switches to close (defeat) the other three limits, which do not have switches wired to their inputs.

Don't forget that the correct input terminal for any given limit switch (e.g. X minus) depends on whether or not you need to set direction reversal for that axis, to match motor rotation to axis movement. Get your axis directions right first, then connect the limit switches.

[Robert Meacham]

Usually, the 'H' terminals are the primary taps (connected to the incoming AC service) and the 'X' terminals are the secondary taps (feeding the load).

Based on the jumpers that are almost visible in your picture, this transformer has dual primary windings, so that it could, for example, be tapped in parallel for a 120V supply; or in series for a 240V supply. Your measurements suggest that in either of those cases, the secondary voltage (X1 to X2) would be around 83VAC, which would be a good level to run through a bridge rectifier and capacitor to get a DC bus voltage around 120VDC (comfortably below the 140V rating of the motors).

It is, of course, possible to "back feed" a transformer, connecting the incoming service to the 'X' taps and connecting the load to the 'H' taps. Do you have reason to believe it was done that way in the original Anilam control?

Yes come to think of it there was two jumpers that connected H1 to H4 and H2 to H4 I will recreate that, check the voltage and Report. Thank you

[Robert Meacham]

It is, of course, possible to "back feed" a transformer, connecting the incoming service to the 'X' taps and connecting the load to the 'H' taps. Do you have reason to believe it was done that way in the original Anilam control?

You were spot on. I was feeding it backwards. I put the jumper wires back in that were on it and it makes 82.9 volts on the x1 and x2 terminals. So can I just add a second 24 volt AC Transformer? If so is there an amperage requirement it needs to meet?

[cnckeith]

hi, please put all the photos in a photo album and post the link to the photo album, you can continue to add photos as you go to the same album
here is how. https://centroidcncforum.com/viewtopic.php?f=64&t=11072

[Robert Meacham]

hi, please put all the photos in a photo album and post the link to the photo album, you can continue to add photos as you go to the same album
here is how. https://centroidcncforum.com/viewtopic.php?f=64&t=11072

Ok I'll figure that out, thanks.

[centroid467]

I am guessing that you are looking for 24 VAC for control circuits like the contactor and so on. I'd look at the datasheets for your components and find the coil current requirements and add them all up.

Some places that have suitable transformers: https://www.automationdirect.com/adc/sh ... rice%20asc

https://www.digikey.com/en/products/fil ... 8dUxcNAKgA

[Robert Meacham]

I am guessing that you are looking for 24 VAC for control circuits like the contactor and so on. I'd look at the datasheets for your components and find the coil current requirements and add them all up.

Some places that have suitable transformers: https://www.automationdirect.com/adc/sh ... rice%20asc

https://www.digikey.com/en/products/fil ... 8dUxcNAKgA

Yeah you maybe right I just seen this on the schematic and hadn't gone as far as seeing what the 24 volt side was for.