Bit OT - TIG Welder pedals

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Bit OT - TIG Welder pedals moray 02-10-2008
Posted by moray on February 10, 2008, 2:33 pm
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 I've got a Cebora TIG Inverter that I want to add a pedal to, but I grudge
paying £180 (that's for one from Heliarc - I'm sure the genuine item was a
good bit more) for something that doesn't get used much.

I've got a pin out diagram of the connector, and all it needs is a
potentiometer across three of the pins.
However, I've not got any idea of what resistance will be needed, but I
notice the heliarc pedals would seem to be a standard pedal, with a
connector added to suit different welders.

Does anybody know what resistance pots are typically used in TIG pedals?

I can measure the voltage across the connectors on the welder if it'll help.



Posted by Cliff Ray on February 10, 2008, 4:23 pm
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 moray wrote:
> I've got a Cebora TIG Inverter that I want to add a pedal to, but I gru=
dge=20
> paying =A3180 (that's for one from Heliarc - I'm sure the genuine item =
was a=20
> good bit more) for something that doesn't get used much.
>=20
> I've got a pin out diagram of the connector, and all it needs is a=20
> potentiometer across three of the pins.
> However, I've not got any idea of what resistance will be needed, but I=
=20
> notice the heliarc pedals would seem to be a standard pedal, with a=20
> connector added to suit different welders.
>=20
> Does anybody know what resistance pots are typically used in TIG pedals=
?
>=20
> I can measure the voltage across the connectors on the welder if it'll =
help.=20
>=20
>=20
If you can wait a few days I will measure the resistance on the one I hav=
e.



Posted by moray on February 11, 2008, 4:45 pm
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moray wrote:
> I've got a Cebora TIG Inverter that I want to add a pedal to, but I grudge
> paying £180 (that's for one from Heliarc - I'm sure the genuine item was a
> good bit more) for something that doesn't get used much.
>
> I've got a pin out diagram of the connector, and all it needs is a
> potentiometer across three of the pins.
> However, I've not got any idea of what resistance will be needed, but I
> notice the heliarc pedals would seem to be a standard pedal, with a
> connector added to suit different welders.
>
> Does anybody know what resistance pots are typically used in TIG pedals?
>
> I can measure the voltage across the connectors on the welder if it'll
> help.
>
If you can wait a few days I will measure the resistance on the one I have.


If you could, and it's not too much hassle, I'd be grateful.
It's always better to have a definitive answer, rather than some if's, but's
or maybe's of the interweb.



Posted by Trevor Jones on February 10, 2008, 5:10 pm
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moray wrote:
> I've got a Cebora TIG Inverter that I want to add a pedal to, but I grudge
> paying £180 (that's for one from Heliarc - I'm sure the genuine item was a
> good bit more) for something that doesn't get used much.
>
> I've got a pin out diagram of the connector, and all it needs is a
> potentiometer across three of the pins.
> However, I've not got any idea of what resistance will be needed, but I
> notice the heliarc pedals would seem to be a standard pedal, with a
> connector added to suit different welders.
>
> Does anybody know what resistance pots are typically used in TIG pedals?
>
> I can measure the voltage across the connectors on the welder if it'll help.
>
>
Pretty sure I recall seeing 10K ohm come up, fairly often.

Dunno that you could do any harm....


From http://www.mig-welding.co.uk/forum/showthread.php?t=2423&page=2
http://shdesigns.org/Welding/aircoctl.pdf shows 5K, and a few other
components for an airco.


http://ssccontrols.com/homepage-TIGweldingcontrols.htm has lots of info,
as well as cct diagrams, though the one I looked at had no value given.

It's a start...

Cheers
Trevor Jones


Posted by moray on February 11, 2008, 4:44 pm
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> moray wrote:
>> I've got a Cebora TIG Inverter that I want to add a pedal to, but I
>> grudge paying £180 (that's for one from Heliarc - I'm sure the genuine
>> item was a good bit more) for something that doesn't get used much.
>>
>> I've got a pin out diagram of the connector, and all it needs is a
>> potentiometer across three of the pins.
>> However, I've not got any idea of what resistance will be needed, but I
>> notice the heliarc pedals would seem to be a standard pedal, with a
>> connector added to suit different welders.
>>
>> Does anybody know what resistance pots are typically used in TIG pedals?
>>
>> I can measure the voltage across the connectors on the welder if it'll
>> help.
> Pretty sure I recall seeing 10K ohm come up, fairly often.
>
> Dunno that you could do any harm....
>
>
> From http://www.mig-welding.co.uk/forum/showthread.php?t=2423&page=2
> http://shdesigns.org/Welding/aircoctl.pdf shows 5K, and a few other
> components for an airco.
>
>
> http://ssccontrols.com/homepage-TIGweldingcontrols.htm has lots of info,
> as well as cct diagrams, though the one I looked at had no value given.
>
> It's a start...

I think I need to refine my google efforts!
Thanks for those links.
They've certainly given me some ideas, andI'll probably go for a 10k pot to
start with.

I figure that as it's an inverter, going for a higher resistance is less
likely to cause any magic smoke to be released.

moray




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