Re: [CAD_CAM_EDM_DRO] Re: SS Relays - Revisited

Phil, I have a customer with the Hypertherm plasma machine and we us a 2
amp sensitive coil relay for the trigger with no problems.
Jim

----- Original Message -----
From: "Moore" <pminmo@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, December 15, 2003 11:51 PM
Subject: [CAD_CAM_EDM_DRO] Re: SS Relays - Revisited


> A mechanical relay isolates also as long as the contacts are not
> wired back to the coil signals in some method. The only issue I
> would potentially have with an automotive relay is if the trigger is
> truely high impedance, over time the contacts may not clean and
> eventually you won't get electrical contact. i.e. no trigger
> I'm just not familiar with plasma triggers. But between the
> automotive relay and the high current ssr, I get the impression there
> is some significant current flow. That doesn't fit with a high
> impedance input, unless it is capacitive in nature thus a high
> initial current.
>
> Phil
>
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