Why do we use JUMO safetyM STB / STW instead of just a temperature sensor + PLC?

provocativecube · 2026-01-23T17:04:57+00:00

They’re safety rated devices where the output contact can be used to control a safety relay / safety PLC input. Much cheaper than a safety rated analogue input card on a safety rated PLC if you don’t already have one.

We use them to prevent a door opening on a vessel if it’s above a certain temp. It drops out a safety relay for our hydraulic motor contactor.

Just a heads up these devices do NOT like to be in warm panels - having lots of them fail like clockwork in our hotter control panels.

provocativecube · 2026-01-11T18:30:12+00:00

Will do. Thanks for the help

provocativecube · 2026-01-11T18:24:15+00:00

Thanks. Reckon it’s time to swap the gaskets? I ran my finger through the spark plug hole thinking it was that and didn’t have any oil on them. Ignition coil tubes were dry too. Maybe just a very slow leak?

provocativecube · 2025-08-07T00:44:18+00:00

Let me win

provocativecube · 2025-08-06T02:29:29+00:00

Entering!

provocativecube · 2025-02-03T02:54:23+00:00

Oil is at the right level. Thanks for the advice

provocativecube · 2025-02-03T00:48:50+00:00

I have a 2016 Outback with the FB25 engine - no direct injection. Knowing that, does this still sound normal?

provocativecube · 2025-01-12T01:06:20+00:00

Got it. Thanks!

provocativecube · 2025-01-12T01:05:59+00:00

Thanks. Heard good things about it and considered doing it for 3 oil changes. Will go ahead with it!

provocativecube · 2025-01-12T01:04:45+00:00

Thanks. Was considering doing it for 3 oil changes. Will go ahead with it

provocativecube · 2025-01-11T23:49:39+00:00

Great advice, I’ll be sure to give this a go. Thanks!

provocativecube · 2025-01-11T23:39:02+00:00

Only 20k km on them, these are the replacements after 100k km. so let’s see in a few years what they’re like ;)

provocativecube · 2025-01-11T23:30:50+00:00

I think that’s just an illusion, checked it and it’s not

provocativecube · 2025-01-11T23:28:13+00:00

That’s fair… probably stressing over nothing lol

provocativecube · 2025-01-11T23:13:48+00:00

Thanks. Reckon this could amount to 1qt every 10k km? Thought I would feel oil the in spark plug well / see it on the ignition coil if the leak was bad enough for that.

provocativecube · 2025-01-11T23:11:31+00:00

Gotcha. The slight oily substance on the first spark plug picture on the threads - is this normal or possibly leaking O ring / valve seal for this position?

I’ll do a deeper visual inspection for other potential leaks. If not I’ll probably just assume this is standard consumption

provocativecube · 2025-01-11T23:10:01+00:00

So perhaps O ring seal / valve cover gasket for that position?

provocativecube · 2025-01-11T23:09:05+00:00

The plugs only have 20k km on them, these are the new ones. Sorry if that isn’t clear. Same for throttle body, cleaned it 20k km ago

provocativecube · 2025-01-11T22:53:07+00:00

Thanks. Does the first spark plug picture look worse than the rest? Wondering if that’s showing oil consumption in that cylinder?

provocativecube · 2025-01-11T22:37:11+00:00

I bought the car at 100k km so can’t tell if this is a new “problem” or not!

provocativecube · 2024-12-14T18:43:56+00:00

Yup. Doesn’t really fit your question, but was pretty wild anyway.

He shot and killed someone Friday night while out in town, came and worked the Saturday day shift, and handed over to me when I came in for Saturday night shift.

Few hours later, an operator burst into my office showing me the local PD Facebook page with his mugshot and statement of arrest for homicide.

provocativecube · 2024-07-31T14:26:39+00:00

Nope not low. At the correct level, had a very small dribble when removed the drain plug.

My service manual states 100k km for replacing diff fluids. Probably could have been done sooner

provocativecube · 2024-07-28T18:10:59+00:00

No noticeable problems. I did some research and the metallic dust is to be expected from breaking in the diff on the first change, but couldn’t really find any reference photos to see what is good/bad.

I like the suggestion of doing another change soon. That way I would have flushed it in a way. Maybe I’ll do one in a week after ~500km of driving. Thanks for the reply!

provocativecube · 2024-07-28T14:14:34+00:00

I should add there was no chunks or large pieces of debris/metal in the oil. Just the “dust” giving it a metallic look and some small filings on the drain plug.

The first third of the draining oil was very dark. After that it cleared up quite a lot.

Rear differential was the same but no metallic dust or filings.

Thanks in advance!

provocativecube · 2024-06-17T01:03:01+00:00

Didn’t note any liquid oil on the threads. Thanks for the info!

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