electrical tech question

S

ShyGuru

Well-Known Member
Hello fellow LEDers! Ok so I know this isn't the proper spot for this but I didn't get any useful hits in the grow room setup forum, and I know there are a bunch of knowledgeable people that hang out in this section. I've learned so much from you guys and was hoping someone could help me out one more time. So here's what I'm trying to do. I have a Soler & Palau td100xs exhaust fan which has separate inputs for the low and high settings. What I would like to do is switch between the low and high setting at a preselected programmable temperature. I know that it can be done and I have a general idea how to do it but I would like to see if anyone has a better idea than me or can shoot holes in my idea. Ok here's what I got so far... I can use a transformer (either 12v or 24v) wired thru a standard digital home thermostat to trigger a spdt relay with low on the normally open side. If I'm correct when the temp gets above the set point the thermostat will allow the transformer to power the relay control circuit switching from low to high. Does that sound correct? I did something similar in my first prototype box, using a thermostat to control a second auxiliary fan when temps got too high. Obviously I would prefer to buy a premade off the shelf unit but I haven't seen any designed for what I'm trying to do as most are just on off switches not a/b switches. The closest thing I found is called a relay in a box. It's neat and clean but would still require a transformer and a thermostat. Any help/ideas/criticism is much appreciated. Thanks!!
 
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salmonetin

salmonetin

Well-Known Member
...i dont have Soler & Palau td100xs... but i like the fan...

...in my dreams controlled with something similar to...

...200-240V Digital Temperature Controller Thermocouple -40ºC to 120ºC with Sensor...or...
...220V Digital Air Humidity Control Controller WH8040 Range 1% ~ 99% RH HM-40 Type...or both...
...and maybe with digital timer too... in my dreams... industrial digital timer and contactor/s...

https://www.rollitup.org/t/my-disaster-drawer.832718/page-11#post-11231267

...sorry my bad and short english...

...you said intake fan... from my pov or in my dreams i use it on extraction with carbon filter....
...but with power leds maybe a secondary intake fan for lamp/s with conducts....:fire:

...im bad on paint... but maybe one electrical scheme or similar... help on visual understanding...

...maybe other bro can help better on this way...

...no need transformer and comes with rele...but beware with AC... security first... when deal with AC some experience on security are assumed...

:peace:

Saludos
 
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salmonetin

salmonetin

Well-Known Member
....lol... im too poor bro Psuagro... i prefer the diy way... ...more posibilities...

...titan control... its for my pov... industrial controller... more expensive and maybe quality...
...lot of good brands... and what prices too...

...but seems to me arduino way or similar .... are other economic way too... and maybe with lot more posibilities than titan controls or similars... ...

...for my pov... with good industrial digital timer/s and contactors and other extras... we can reproduce the titan controlller/s...with good results on large runs... more economic... or not too expensive...

:peace:

Saludos
 
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S

ShyGuru

Well-Known Member
@salmonetin thanks for noticing my error, you are correct I meant exhaust fan. I fixed that.
@psuagro that Mercury is a nice product but I don't see how it can exactly work in this application. You see the S&P td100xs has two separate power inputs so its almost like controlling two sseparate fans. When you apply power to one input its low speed, power the other for high. I know you know your stuff so please don't think I'm putting your idea down, I'm just not sure you're familiar with this particular fan.

I'm trying to use the high/low feature to prevent using a speed controller to avoid the hum. No point spending big money on a quiet fan only to have it hum. And I haven't the slightest idea how to use adruino which is why I'm going the thermostat/contactor route lol
Thanks guys I like the brainstorming!
 
gk skunky

gk skunky

Well-Known Member
Ah guess your last Message and edit to op was not showing. Just use the high flow Jack. That low speed will be pointless in my opinion unless you could use the low for constant and high for controlled when needed though I've never tried using that fan in that manner to know if that's even possible. My buddy just runs his off the controller.
 
S

ShyGuru

Well-Known Member
@gkskunky that's exactly what I'm looking to do. Always in low and high when needed. It's a fairly powerful fan for a fairly small space. It's going inside a cabinet. I may not need more than low since even low is alot for a space that size.
@salmonetin Yes!! That is it! I searched and searched but never looked closely enough at the stupid manual. I'm looking at the first option. Just trying to figure out the control side and the specs for the transformer and contactor.
 
mc130p

mc130p

Well-Known Member
ShyGuru said:
... I may not need more than low since even low is alot for a space that size.
...
Click to expand...

I have the same fan in my 3' x 2' x 6' space, and I too wanted to have my fan run in the same manner as you have described. I did find that low was good enough to pull through the 6"x16" phresh filter and effectively ventilate the tent; hopefully you can just hook it up and not worry about the extra complexity:)
 
salmonetin

salmonetin

Well-Known Member
ShyGuru said:
@gkskunky that's exactly what I'm looking to do. Always in low and high when needed. It's a fairly powerful fan for a fairly small space. It's going inside a cabinet. I may not need more than low since even low is alot for a space that size.
@salmonetin Yes!! That is it! I searched and searched but never looked closely enough at the stupid manual. I'm looking at the first option. Just trying to figure out the control side and the specs for the transformer and contactor.
Click to expand...
...i edit with manuals... with this digital controllers... no need transformer ... they have rele on board ....but on contactor way ...what model are you refering?...

...the transformer way... we can use it to work with security voltages and amperages on control side (sensors switches etc)... but its more work too... off course more secure too... the contactor way are not simple or economic way...but i like a lot the industrial way...im old :P ;)

...mc130p... for my pov arent complex...but i have experience with contactors... timers... transformers... ac/dc man... im a live wire ou yeah....;)

:peace:

Saludos
 
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S

ShyGuru

Well-Known Member
@mc130p I appreciate the reassuring words since my space is slightly smaller at 36x24x54, tho the fan filter controls and drivers will be in a separate but attached space to free up as much room to grow as possible. My proto box only used axials and homemade filters and rarely did the second fan kick on. Hoorah for LEDs! The space stayed around 81-83 with the backup set for 85. I had a successful run but its time to step it up with more led wattage and retire the proto box to mother and clone duty. And with more wattage (around 400) comes more of a need for vventilation. I'm always worried its not enough.
@salmonetin that controller is very neat but unless I'm mistaken it is simply two on off switches, one for heat one for cool. I don't see that it will switch from one to the other without user input so without a relay or contactor it still won't work. Basically it's not a stand alone unit... Right? The diagrams you sent were in Spanish (I think lol) so I couldn't really make them out.
 
S

ShyGuru

Well-Known Member
@salmonetin sorry I type slow and missed your last post. I'm very familiar with the AC side if it. Completely comfortable. But I've never really gotten the grasp of DC. I can do the work but I need guidance. Forgive me if I'm misunderstanding you but with your way I can leave out the transformer (I.e. work with line voltage) but I would still need the a/b switch (I.e. contactor/relay). Correct? I appreciate your working with me on this.

What makes this difficult is I need more than an on/off. I need a switch that turns one off while simultaneously turning the other on. The only way I can think of was contactor/relay. It's not a very powerful fan so I don't know that industrial spec is called for but I do like the reliability factor.
 
salmonetin

salmonetin

Well-Known Member
...@mc130p ..i prefer industrial contactors than reles,... but i like the reles way too...:P ;)

...on future post mine here...e function are actived here too... for my eyes SG ..you can use the like bottom too... :twisted:

...thanks Wilson...and yeah back to chozo...

:peace:

Saludos
 
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