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Curious about those current sensors, it looks like there are multiple wires running through both of them, but that could be an optical illusion.
You see correctly 😉.
2 hours ago, AquaticsLive said:Curious about those current sensors, it looks like there are multiple wires running through both of them, but that could be an optical illusion.
Suspect that is both legs to measure total load. One hall sensor can measure both if the wires are oriented with the magnetic fields aligned to be additive.
What i'm a bit baffled at is 2 sensors each with 2 wires ... possibly the same wires? Trying to average out engineering tolerances? lol, idk...
34 minutes ago, NotMario said:Suspect that is both legs to measure total load. One hall sensor can measure both if the wires are oriented with the magnetic fields aligned to be additive.
Bingo 😉
34 minutes ago, NotMario said:What i'm a bit baffled at is 2 sensors each with 2 wires ... possibly the same wires? Trying to average out engineering tolerances? lol, idk...
One's input current, the other's output current. Wires happen to have the same colors--but trust me, they're separate wires 😉.
18 minutes ago, NotMario said:What i'm a bit baffled at is 2 sensors each with 2 wires ... possibly the same wires? Trying to average out engineering tolerances? lol, idk...
Yeah same here curious why do it that way, I am sure Sid has a a really good reason. I have never seen it done like that, the old large UPS systems had multiple sensors for a single conductor in multiple locations to work around the angle issue using cheap loop sensors. As long as the wires are fairly straight though that angle issue doesn't matter that much like less than 2%.
3 minutes ago, AquaticsLive said:As long as the wires are fairly straight though that angle issue doesn't matter that much like less than 2%.
I've never noticed any change in readings regardless of the sensor positioning--so I've never given it second thought. The far bigger issue for us is the manufacturing tolerance in said sensors!
4 minutes ago, Sid Genetry Solar said:One's input current, the other's output current. Wires happen to have the same colors--but trust me, they're separate wires 😉.
Ahh that makes more sense. I tried to follow them. Once PJ gets wire routing cleaned up it will be easier to see where stuff goes right now with it being a test unit the wire routing is a mess.
never noticed any change in readings regardless of the sensor positioning
Oh yeah test it out, if you make the angle more extreme its easier to tell. The way around that is keep them perpendicular and fairly centered.
2 minutes ago, AquaticsLive said:Once PJ gets wire routing cleaned up it will be easier to see where stuff goes right now with it being a test unit the wire routing is a mess.
I'm actually quite happy with the wire routing as it is. That's highly flexible silicone 7AWG wire--out of necessity, as there's about 20mm between the chassis and the big heatsinks--they have to bend around a pretty tight corner.
8 minutes ago, Sid Genetry Solar said:I'm actually quite happy with the wire routing as it is. That's highly flexible silicone 7AWG wire--out of necessity, as there's about 20mm between the chassis and the big heatsinks--they have to bend around a pretty tight corner.
It just looks like it is loose those sensors will bounce around in shipment, it would be nice if they added some wire management.
3 minutes ago, AquaticsLive said:It just looks like it is loose those sensors will bounce around in shipment, it would be nice if they added some wire management.
They did...I've cut quite a few cable ties.....
I actually did put zip tie slots on the control board for holding those sensors in place; one can also be zip-tied to the tall relay. So that won't be a problem.
One's input current, the other's output current. Wires happen to have the same colors--but trust me, they're separate wires 😉.
Doh! Of course. I was too fixated on how it looked like the red wire was the same.
By the way...
With current regulation, will the board have a value for DC amps?
The reason i ask is monitoring systems want to have AC In/Out Amps and DC Amps to track power flow, and efficiency.
1 minute ago, Sid Genetry Solar said:I actually did put zip tie slots on the control board for holding those sensors in place; one can also be zip-tied to the tall relay. So that won't be a problem.
NIce that will work better, figured it was just part of testing with all the wires and sensors loose. Wire management isn't PJ's specialty either, well us tech's here in the US do take things a bit extreme too so a middle ground would be good. I have to admit that I have spent many hours making a PLC cabinet wiring nice to take pictures to send to the boss.
Well doing a good PM on it and checking all the wiring will be something that I will do once my warranty runs out. I fixed all the wiring issues inside my PJ right away it was so bad.
Just now, AquaticsLive said:NIce that will work better, figured it was just part of testing with all the wires and sensors loose. Wire management isn't PJ's specialty either, well us tech's here in the US do take things a bit extreme too so a middle ground would be good. I have to admit that I have spent many hours making a PLC cabinet wiring nice to take pictures to send to the boss.
Well doing a good PM on it and checking all the wiring will be something that I will do once my warranty runs out. I fixed all the wiring issues inside my PJ right away it was so bad.
I can respect how unbelievably organized some people can get those things... I get the equipment to do it's job... but the wiring will be a mess afterwards if i have to touch it - i lack the organizational knack, i guess.
Admittedly, i've never heard of a tech/op cleaning a PLC cabinet... what are you, a super-tech? 😮
17 minutes ago, AquaticsLive said:NIce that will work better, figured it was just part of testing with all the wires and sensors loose. Wire management isn't PJ's specialty either, well us tech's here in the US do take things a bit extreme too so a middle ground would be good. I have to admit that I have spent many hours making a PLC cabinet wiring nice to take pictures to send to the boss.
There is always a middle ground. I actually tidied up the fan wires this morning in the lid with wire management...if it doesn't help with EMI and such, I don't know what will!
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PLCs and such with lots of wires do have a good point in neatening everything up--but at the end of the day, the longer a wire, the more electrical resistance and the higher the cost.
Admittedly, i've never heard of a tech/op cleaning a PLC cabinet... what are you, a super-tech? 😮
Lol dude open one up a PLC cabinet here in the US and you see it all organized out nice well at least after it was first installed some techs that come by later will leave the wire tracks open and wires all tangled up. Lol wouldn't say super-tech to electronics tech that is an insult we used to call those guys that can't fix anything super-tech's lol.