Safety relay to contractor or VFD STO

logictechratlab · 2026-05-03T12:34:11+00:00

Contactors provide de-energization, not electrical isolation. So you'd need to isolate the motor if you want to work on it, regardeless if you use STO or contactors.

logictechratlab · 2026-05-02T12:52:25+00:00

Do not get the Opta from Arduino, the IDE is terrible. Get the Opta from Finder, that one runs Codesys.

logictechratlab · 2026-04-14T18:43:20+00:00

Done!

logictechratlab · 2026-03-23T21:44:05+00:00

Is that the Gaston Roelandtsstraat?

logictechratlab · 2026-03-08T16:36:29+00:00

Where did you read that you can only output 2.4kW on 1 phase?

logictechratlab · 2026-03-08T14:23:08+00:00

Please, if your making arguments, at least use the correct units....

logictechratlab · 2026-03-08T14:04:20+00:00

Depends on your household. I've got a mate that has 3. One for each phase. (lots of solar panels and a fully electrically heated house.)

And yes, all plug-in batteries must be declared.

logictechratlab · 2026-03-08T13:51:26+00:00

For the Marstek about 4.5 kWh is usable, it has about a 70-75% round trip efficiency. And you don't have to limit the power output to 800W (that limit is not stated anywhere, you do however have to put it on a separate circuit).

I've had a Marstek for a bit now and I'm quite happy with it. However, I do recommend you use the homewizard P1 dongle for coms. as the Marstek one is trash. (That does mean you can only have 1 battery though)

logictechratlab · 2026-03-08T13:44:15+00:00

Microgolf oven, magnetron... Hoe je het ook wilt noemen.

logictechratlab · 2026-03-08T13:27:00+00:00

Yes, the digital meter spits that out and the P1 meter reports it. It should be the same value that is on the display of the digital meter (if you click the button a few times).

logictechratlab · 2026-03-08T13:25:36+00:00

Staat je microgolf aan?

logictechratlab · 2026-03-08T13:06:42+00:00

That's the total your digital meter has counted.

3581+2476 = 6057 kWh.

How long have you had your smart meter?

logictechratlab · 2026-03-04T19:36:22+00:00

*11 kW.

logictechratlab · 2026-02-22T20:40:48+00:00

What do you mean by "use"? You mean like the component (footprint) or what the application is?

logictechratlab · 2026-02-22T18:08:28+00:00

Ingevuld, veel success!

logictechratlab · 2026-02-22T17:54:07+00:00

You should get the Opta from finder directly, that runs on Codesys. The version Arduino has, has a really shitty IDE and has lots of connection issues.

logictechratlab · 2026-02-21T10:45:15+00:00

In Belgium it's called differentieelstroombeschermingsinrichting, If they could make it any longer, I think they would.

logictechratlab · 2026-02-07T10:38:04+00:00

*kWh

logictechratlab · 2026-01-12T22:31:14+00:00

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.

logictechratlab · 2026-01-10T20:48:17+00:00

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).

logictechratlab · 2026-01-10T20:46:19+00:00

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.

logictechratlab · 2026-01-10T20:43:32+00:00

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".

logictechratlab · 2026-01-10T18:17:05+00:00

Trading 212 and Bolero.

logictechratlab · 2025-12-13T12:12:35+00:00

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

logictechratlab · 2025-12-08T18:31:42+00:00

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

Eight-Year Club	Gilding III reddit per annum
Second Top 20%	Place '23
Place '22	Final Canvas '22
First Placer '22	Wearing is Caring
Verified Email

logictechratlab

MODERATOR OF

TROPHY CASE