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carlh
@carlh
Trusted Member
Joined: Dec 20, 2024
Last seen: Sep 22, 2026
Topics: 5 / Replies: 42
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RE: Ultrasonic level in a wet well jumps 2m and short cycles the lead pump

Stilling tube is worth fitting on every well. Wish more people did.

3 weeks ago
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RE: Ultrasonic level in a wet well jumps 2m and short cycles the lead pump

Foam. That's your answer, and the wash down is why it started. An ultrasonic works on a returned echo. Foam soaks the pulse up so the head hears noth...

3 weeks ago
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RE: 30 step filling sequence, ladder is 400 rungs of state bits, move it to ST or SFC?

Your electrician finding XV107 on his own is the whole result there.

3 weeks ago
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3 weeks ago
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RE: Micro820 start/stop rung, motor starts then drops out the instant I let go of Start

Right, it stays off. That's the point of doing it with an OTE.

3 weeks ago
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RE: PowerFlex 525 kept running after the switch died, stop on the screen did nothing

Set C143 back to 0 on drive four. Tested it by pulling the cable at the switch, drive faulted on net loss straight away and stopped. Put the same test...

3 weeks ago
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RE: SICK light curtain won't reset, one beam blocked by the new guard bracket

Fabricators bolt to whatever's standing there. Every time.

3 weeks ago
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RE: Motor current into a CompactLogix via CTs for predictive maintenance, is it worth it

Four CTs on the four motors that matter, the infeed, two transfers and the case erector feed. Drives give me the other five. Trending since. Two week...

3 weeks ago
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RE: Eight machines, one screen for everything, proper SCADA or a bigger PanelView Plus 7

Tell him the second PanelView he'd buy in two years costs about the same as the difference. That's how ours went.

3 weeks ago
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RE: Micro820 start/stop rung, motor starts then drops out the instant I let go of Start

> the only thing that can do that is the output itself That. Put a branch around the Start contact with a contact of O-00 in it. Start OR motor al...

3 weeks ago
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RE: PowerFlex 525 kept running after the switch died, stop on the screen did nothing

Five of them read 0. Drive four reads 3, which on the keypad shows as hold last. Nobody here admits to changing it. I do remember that drive dropping...

3 weeks ago
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RE: 30 step filling sequence, ladder is 400 rungs of state bits, move it to ST or SFC?

Then the valve rungs stay in ladder. Seen this on a bottling line, OEM put everything in ST, maintenance couldn't find the interlock, and the plant pa...

3 weeks ago
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RE: Motor current into a CompactLogix via CTs for predictive maintenance, is it worth it

The infeed motor's belt ate a bearing last year. That one first, I reckon.

3 weeks ago
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RE: Ignition can't reach a 1756-L72 on VLAN 20 from VLAN 10, IT says routing is fine

Every plant has one PLC with the gateway box blank and one IT lad who says .254 without looking. Once the real address is in there it'll answer the fi...

3 weeks ago
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RE: Light curtain muting trips on every second pallet on the exit conveyor, mute lamp flickers

Safety guy came out, checked the spacing against the curtain manual for the short load, we ended up at 26in not 24. Timeout stayed at 10 seconds, he t...

3 weeks ago
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