Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Reduction of welding noise

Status
Not open for further replies.

yurble_vn

Newbie level 5
Joined
Dec 26, 2005
Messages
9
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,281
Activity points
1,370
Dear all,

I'm going to build a small controller work in welding environment, and the trouble is the noise in this environment.

Is there anyone has experience in the welding noise reducing ? Any suggestion is welcome too

Thanks,
 

noelm

Newbie level 1
Joined
Mar 19, 2006
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,288
welding noise

I use a RFI filter in the input sheld all control wires coming from and to your controller and make sure you ground your controller box if it is metal.
 

IanP

Advanced Member level 5
Joined
Oct 5, 2004
Messages
7,942
Helped
2,309
Reputation
4,620
Reaction score
531
Trophy points
1,393
Location
West Coast
Activity points
66,459
3 phase mains filter for welding

In addition, consider fitting a good single-phase/3-phase mains filter on the welder power input and, this is a must, put your controller on a metal (steel) enclosure and connect "good" earth to almost everything you can ..

Regards,
IanP
 

yurble_vn

Newbie level 5
Joined
Dec 26, 2005
Messages
9
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,281
Activity points
1,370
electrical noise from welder

RFI filter in the input sheld all control wires coming from and to your controller


consider fitting a good single-phase/3-phase mains filter on the welder power input

I don't get it. A little more special please

many thanks
 

IanP

Advanced Member level 5
Joined
Oct 5, 2004
Messages
7,942
Helped
2,309
Reputation
4,620
Reaction score
531
Trophy points
1,393
Location
West Coast
Activity points
66,459
welding noise level

Here is what I meant:

If you have 3-phase welder you will need 3-phase filter, if you have 1-phase welder you will need 1-phase filter, and the most effective option is a 2-stage mains filter .. see picture below ..

Regards,
IanP
 

creative_35

Full Member level 1
Joined
Apr 10, 2006
Messages
95
Helped
9
Reputation
18
Reaction score
3
Trophy points
1,288
Location
Under Mango Tree
Activity points
2,031
Re: Welding noise

I don't know what micro you are using. I have some experience with electrical noise. I did an Industrial washingmachine controller before two years. It had some noise problem while switching inductive loads. I used PICMICRO16F84A. I tried somany filters like snubber network to load and to the control relay coil also. but the result was a big failure. used a CPU powersupply(hope it was filtered) but it increased the noise level. finally I accidently read the internal noise filter portion in the datasheet of 16F628. and I recompiled the code for F628. the result was amazing. I removed all the filters and used normal power supply. it was working perfectly. conclution: 16F84 is not suitable for noisy enviornments. use F628 instead.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top