balluff home sensor proximity switch

[Lasseh]

hi i would like to know what type of sensor and brand and data so I can try them
the mill is from 1993 or 94

[Denford Admin]

Our stock system shows: part number is BI00401A - Prox Detect MJ1.2-M8EB22.5NA - Supplier: Murrelektronik

[Lasseh]

Thanks for the information, but if you search the Internet there is no info about the sensor.
So is there anyone who knows what type of sensor, data and wiring. It looks a bit poorly on the image

[sweep]

You should be able to get the info from the Balluff website direct. Mine is a much earlier machine so my proxies may be different but I did download the tech spec.

...sweep

[Lasseh]

I contacted buffy and they did not know what type it was and the part number was nothing they were aware of
So how does anyone who uses geckodrive or mach3 done with your home sensors?

please someone know how they work?

[Denford Admin]

This is a Triac datum sensor that we still have in stock from a few years ago:
https://www.balluff.com/Balluff/gb/Produ ... 4DC547B%7d

HTH

[Lasseh]

Thank you very much:)

[Denford Admin]

By the way, operating voltage shows something like 8 Volts but we're sure we used to run it off 12V

[sweep]

Just be aware that the sensor is a 2 wire Namur type which means, I think, that unlike a modern 3 wire design which has a supply to power the sensor, a negative, and a seperate line that will be switched, the 2 wire Namur type changes the flow of electicity dependent on whether there is anything detected or not. As such, you can't just wire in a relay as you would a 3 wire type but have to use an amplifier which detects the slight change in flow and then controls a relay.
The advantage of Namur sensors is that they can be used in hazardous environments due to their very low operating and switching currents.

If what I have written is nonsense could someone please put me right as I am trying to solve the same problem at the moment.

What i have done is to hacksaw the part of the original motherboard out, hard wire onto it for supply and control output, and, eventually, mount it in my new panel and then control a relay or somesuch thing.
The other way would be to buy 3x amplifiers (XYZ) but this would run into £hundreds.

thanks ...Sweep

[Denford Admin]

The advantage of Namur sensors is that they can be used in hazardous environments due to their very low operating and switching currents.

NAMUR is some kind of German standard for the Chemical industry so that all makes sense, although what doesn't make sense is why we used this type in the first place ?
I wonder if a sold state relay would switch from it ok ? I seem to think we've used them in the past for proximity detectors...

[Lasseh]

Ha ha it was creative!
my card looks like this.
you can find where to solder the cables.
is there anyone who knows?

[Denford Admin]

Did you read this post?
viewtopic.php?f=46&t=1763&start=20
Dale replaced his proximity switches with microswitches in the end

If you're converting to mach + new drives, you wont need to use either of those two boards, and may get a few quid on ebay each

[Lasseh]

Thank you all.
I like the idea of home sensor.
is there anyone else who has done it with the original home sensor?

[Denford Admin]

Just in case anyone is still looking, we have a few of the Balluff sensors (old stock) for sale:
viewtopic.php?f=13&t=2932