Author Topic: Mid batch PID issue - N2000P (also on VOD) (Read 2212 times)

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?

Tony · « **Reply #1 on:** July 10, 2014, 08:02:40 PM »

Is it relay output or a voltage drive?

julianf · « **Reply #2 on:** July 10, 2014, 08:06:27 PM »

Tony · « **Reply #3 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?

julianf · « **Reply #4 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.

julesandtash · « **Reply #5 on:** July 11, 2014, 07:32:16 AM »

Glad to have helped mate

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Mid batch PID issue - N2000P (also on VOD)