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Biodiesel => Biodiesel equipment => Topic started by: julianf on July 10, 2014, 07:55:40 PM

Title: Mid batch PID issue - N2000P (also on VOD)
Post by: julianf on July 10, 2014, 07:55:40 PM

My PID has just failed, mid batch. All lights are out.

Not an issue, as its had a tough life, and its been getting flaky for a while.


I got my spare, new, never used unit out of the store, and fitted that.

Powers up with EEEEEE along the top row (Process value).

I cant see why the thermocouple would be faulty, so i reverse the polarity - same.
I fit a brand new thermocouple - same.
I reverse the polarity of the new one - same.


Grim. Anyone got any ideas?

Title: Re: Mid batch PID issue - N2000P (also on VOD)
Post by: Tony on July 10, 2014, 08:02:40 PM

Is it relay output or a voltage drive?

Title: Re: Mid batch PID issue - N2000P (also on VOD)
Post by: julianf on July 10, 2014, 08:06:27 PM

SSR

Title: Re: Mid batch PID issue - N2000P (also on VOD)
Post by: Tony on July 10, 2014, 09:03:14 PM

Could it be the SSR has gone short circuit?  Have you powered the PID without the SSR attached?

Title: Re: Mid batch PID issue - N2000P (also on VOD)
Post by: julianf on July 10, 2014, 09:35:10 PM

resolved it -

Ive wired a few of these before, and never had to set the thermocouple type.

Possibly as this one had been in storage so long, any factory preset got 'forgotten'?

Anyhow, sorted now - thank you.

Title: Re: Mid batch PID issue - N2000P (also on VOD)
Post by: julesandtash on July 11, 2014, 07:32:16 AM

Glad to have helped mate