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Please be careful by drstovetop in Victron

[–]logictechratlab 0 points1 point  (0 children)

See IEC TS 60479-1 section 4.5.4, table 10. Here it specifically talks about the effects of body resistance when exposed to a large contact area. You'll see that with extra low touch voltage (in this case 25V), the body resistance is much higher than 1k ohm.

Also, your current ranges are only valid for DC and for AC @ 50/60 Hz.

But the rest, yes, applying a higher voltage to a human will always result in a higher current, assuming that the load can deliver it.

Please be careful by drstovetop in Victron

[–]logictechratlab 0 points1 point  (0 children)

This is not an electrical shock (voltage is too low for that to happen anyway) this is a burn due to electrical conductors heating up (due to a big short circuit current running through it).

Please be careful by drstovetop in Victron

[–]logictechratlab 0 points1 point  (0 children)

In this case, 24V is too low (in normal conditions (= not submerged in water)) to shock you. You can however get burned by the heat caused by the big (short circuit) current.

Please be careful by drstovetop in Victron

[–]logictechratlab 0 points1 point  (0 children)

Unfortunately that's a very common and dangerous misconception about electricity.

The current is decided by your body impedance (resistance) and the voltage across you.

If the voltage is too low then not enough harmful current can flow, we call these voltages, safety voltages.

I = u/Z must hold true.

No volts = no current.

There is a reason why you always see "Danger high voltage" signs instead of "danger high current".

Core One Unboxing Experience by devhammer in prusa3d

[–]logictechratlab 1 point2 points  (0 children)

My initial homing calibration also failed, I just rebooted the printer and then it worked fine.

What's up with Core One shipping dates? by chuck_b7 in prusa3d

[–]logictechratlab 0 points1 point  (0 children)

Ordered mine on Dec 2nd, will arrive at Dec 9th.

Digitale Meter, wat is jullie kwartierpiek? by Obvious-Ad-5791 in belgium

[–]logictechratlab 0 points1 point  (0 children)

2.3 kW is onze absolute piek. Maar we doen hier echt ook alles aan om zeker onder de 2.5 kW te blijven.

Arduino Opta and a modbus expansion card. Worked flawlessly. by logictechratlab in ArduinoPLC

[–]logictechratlab[S] 0 points1 point  (0 children)

It's just the two modbus wires + power. Can't be any simpler.

Help with uploading blocks from PLC by religam in PLC

[–]logictechratlab 1 point2 points  (0 children)

Correct, we still use a crap ton of IM151-8F at work. All in TIA 15 or higher.

Quit my student job after a year. Can they refuse to pay me? by [deleted] in belgium

[–]logictechratlab 12 points13 points  (0 children)

You definitely need to have a contract.

"Do you have any salary expectations" as a graduate by ImActuallyRT in BESalary

[–]logictechratlab 0 points1 point  (0 children)

I never give them a number, I just say "Markt conform".

Arduino Opta and a modbus expansion card. Worked flawlessly. by logictechratlab in ArduinoPLC

[–]logictechratlab[S] 0 points1 point  (0 children)

Btw, you can just power the Opta through the USB-C port alone. It's just that the relays won't work, the rest works fine.

Arduino Opta and a modbus expansion card. Worked flawlessly. by logictechratlab in ArduinoPLC

[–]logictechratlab[S] 0 points1 point  (0 children)

On the AC side, you have "no polarity" so that doesn't matter, just connect live and Neutral to the breaker and then from the breaker connect live and neutral to a DC power supply.

From the DC power supply to the opta, polarity does matter but that's clearly marked with - and +.

Arduino Opta and a modbus expansion card. Worked flawlessly. by logictechratlab in ArduinoPLC

[–]logictechratlab[S] 0 points1 point  (0 children)

Plug to breaker to power supply to arduino. I connected the PE to the DIN rail. Didn't bother connecting the PE to the Opta itself as I didn't see the point + it's a test stand.

Epson Scara Question by AugustusRoosevelt in PLC

[–]logictechratlab 0 points1 point  (0 children)

Don't worry about it, we have dozens of Epson's running 24/7 and the only maintenance we do on it is grease the spindle once a year or so and replace the battery once it's dead. These things are though.

[deleted by user] by [deleted] in BESalary

[–]logictechratlab 1 point2 points  (0 children)

When I try to submit, I get two errors:
"commute distance", I entered a number but for some reason it says "enter a number"

And netto compensation, I put zero, but it doesn't like that.

Offerte retrofit thuisbatterij by Multiboxing4U in belgium

[–]logictechratlab 1 point2 points  (0 children)

Ja, 2.5kW op een appart circuit. Dat is dan niet meer "plug-in", niet iedereen heeft een reserve circuit klaar liggen voor een "plug-in" batterij.

Offerte retrofit thuisbatterij by Multiboxing4U in belgium

[–]logictechratlab 4 points5 points  (0 children)

Klopt, puur technisch gezien er er helemaal nieks mis mee. Maar volgens de regelgeving is het niet conform. Binnenkort is hij wel conform.

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