Ohmic sensor wiring with masso A5 CNC plasma controller

ghanshyam

Ghanshyam
Good day to you all.​

need help regarding exact wiring for Ohamic sensor to my cnc plasma location in the MASSO . I'm using Proma 150 THC for my plasma, Any advise is highly appreciated. Thank you all.​
 

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cncnutz

CNCnutz
Staff member
Hi Ghanshyam

Could you upload the manual or a link to the manual for your device?

Cheers Peter
 

ghanshyam

Ghanshyam
Hi Peter

Good morning

Please find the attached file Ohamic sensor and THC manual ,this is standalone(1.4) THC plasma controller , I'm using only from his Ohamic sensor product and Proma 150 THC .

Thanks

Ghanshyam
 

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cncnutz

CNCnutz
Staff member
Hi Ghanshyam

I have looked at the manual but it doesn't really tell you much about the ohmic unit.

For some reason it seems to show that it required 230V if I am reading it right. Hopefully someone here has used one and can answer your question or there is a more detailed manual for the device showing the output. Failing that you may need to contact the supplier and ask for their assistance with how to connect it to Masso.

Cheers Peter
 

ghanshyam

Ghanshyam
Hi good morning Peter,

Sorry this ohmic sensors cards manual is old manual and there 230 v supply

But I bought new updated ohmic sensor and this sensor need 24v DC . please find new Ohmic sensor card's photo

Please just tell me below wires where to connect,

Thanks

Ohmic sensor
Ghanshyam

2= Ohmic in

6=DSCT

To Proma 150 and masso A5 CNC plasma controller



whereto connect
 

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ghanshyam

Ghanshyam
Hi Peter
In above image of Ohmic sensor needs +24vdc it's new updated version it no need 230v supply . I checked it . Ohmic card's manufacturer .

But I'm not clear where to connect wires of Ohmic sensors in proma Plasma THC .
Please suggest me how to connect it with proma THC and Hypertherm powermax A65 ,masso G2 Controller.
Thanks .
 

cncnutz

CNCnutz
Staff member
Hi Ghanshyam

You would need to provide the documentation that comes with the unit so that the inputs and outputs can be understood.
Maybe a link to the company website.
The Ohmic output should connect to MASSO and in the case of the G2 would replace the Touch Touch Signal input.
You would need to change the touch touch offset to 0 as well.

The Ohmic unit needs to provide a 5v or higher output to the Torch touch Signal input just like your current touch does.
See the section on setting to MASSO G2

The Ohmic output should not connect to the THC when using MASSO

Cheers Peter
 

ghanshyam

Ghanshyam
Hi
Peter
I discuss with my Ohmic sensor card manufacturer he dont have products manual .he suggested me to use below pin numbers
(1)=Ground
(2)=Ohmic in
(5) =+24v dc
Pin number 6 is needed to connect.
Pin number (2) Ohmicin to connect masso .
And others 2 wires, 1st wire connect plasma TORCH shid and 2nd wire to cutting tabel .
Can I connect Ohmic sensor card naw as with above details ?
Please suggest me .
Thanks.
 

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cncnutz

CNCnutz
Staff member
I can only suggest you give it a try as the supplier suggests and see if it works.
The MASSO inputs are optically isolated.
If he cannot provide any meaningful technical information then that is the only thing you can do.

What I mean is that the connections he suggests will probably work.
But without proper documentation you don't know what sort of isolation the unit has.
Does it for instance need a separate power supply or does it have a fully isolated power supply built in?

If it was properly documented you would know at a glance how to connect, whether a separate power supply was needed and that level of isolation was provided by the unit. Can the arc feedback through the unit and back to the power supply or Ohmic In? You would have to assume not as it is a purpose built Ohmic sensing unit.
It could explain what DSCT Out means and is and what it is used for.
It could show what the expected output of the Ohmic In is. Does it output +24v or Gnd or maybe +5 volts.
None of these voltages will hurt MASSO but only 2 of them will work without adding a pull up resistor and inverting the input.

With that said it looks like the unit you have is designed to plug directly into a particular THC unit in which case it would not normally be documented and the instructions would just say, plug it in.


Cheers Peter
 

jcoldon

jcoldon
i never seen that ohmic unit but DSCT is a control trigger some use a relay to open the input so if torch fires it isolated.
my guess that ohmic unit goes on a special controller it designed for. masso not designed for a control trigger you have to use a double poll torch fire relay use one of the poles . that way torch fires the trigger input isolated cant turn on when torch fires .. What make and model is that ohmic unit were did you get it off of . we need more info to help you
 

cncnutz

CNCnutz
Staff member
I had wondered if DSCT stood for disconnect and was maybe used for isolation.
According to the manual Ghanshyam linked to in Post 3 above it looks like it used on a DigiCut Plasma THC 1.4
Page 10 shows an Ohmic input.
Page 13 shows what looks like the inside of the 230 volt version IHS board if that helps.

Cheers Peter
 

ghanshyam

Ghanshyam
Hi

Peter I didn't got Ohmic sensor's users manual PDF .

But manufacturer suggest me to use ohmic in pin (2) from ohmic card to masso input realy .

Pin number is not not useful for masso Controller.no need to connect it .

And this ohmic card runs on +V24DC SMPS .

Here is no connection in ohmic sensor card for 230,220v .

Please find allso below photos ohmic sensor card's electricl circuit diagram

I think it will be useful to get details .

I have another problem with my proma Plasma THC.

It's not moving up down fast mean not sensing meats job . I did as ross did I follow wiring diagram of Ross .

I did everything step by step ,such as grounding and resistor I attached prom and Masso . resistor size 5.6k Nos to +v24.

I have Hypertherm powermax a65.plasma source and and in Z axis I used 750w servo brake motor

I used 3 separately +24 v SMPS power supply. For1) masso Controller 2) z axis separately to Io cable +v24 singnal and aslo for brake coil Realy .

And proma THC is also connected to separate +V24 SMPS .

I changed diffrant voltage settings in proma THC .but still not working well.
Thanks.
 

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jcoldon

jcoldon

ghanshyam Before you mess with the THC i suggest you get your table running with Propper IHS probe first​

so what happens torch lowers touches switch on float head or ohmic input . Adjust switch offset setting so top of steel is zero .
this is very important . All pierce height and cut height settings in sheet cam use this . The process is torch lowers hits switch .or omic input. Rises up to pierce height fires torch . Pierce delay then moves to cut height .Then in Proma you set THC delay and voltage . After that delay the thc will come on and control your cut height based on voltage you set and it reads . That how the plasma process works . Lots of people think the thc sets cut height it does not . it just reads voltage try to use up down inputs to keep voltage were you set it The thc has no idea what cut height is it just knows what voltage it reads. Lots of things effect voltage readings So since masso does not have anti dive controls or other thc settings you simply need codes to turn off the on holes and corners to prevent dives based or your table velocity slow down. if you need faster z axis movement you have to adjust your z axis ipm in sheet cam post process
 
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