TD5 DC Stainless Pump

[rudylyon57]

Did you order one of the new style TD5 pumps from brewpi which is designed to be used with pwm speed controllers or are you trying to use the old original Style designed to be powered from solar panels that uses mppt technology to counteract what you'd be trying to do with a Pwm speed controller? I just bought two of the actual TD5 designed to be used for beer brewing and so far the only person I know of who sells them is brewpi but I see the other American vendors like more beer and Brew Hardware are clearancing them probably to Purge their stock so they can carry the improved version designed to be controlled this way.
The problem is the mppt controllers are designed to take varying voltage is coming in from the solar panel and converting them to amperage to power the pump consistently regardless this directly messes with the pwm signal this has been brought up many times before but it always seems to get down played.

I purchased from Morebeer. I was not aware of any of this. I had two goals in mind when replacing my Chugger with TD5- 1) Reduce noise-accomplished, 2) Have variable speed control-well sort of. Do you think a lower voltage input may help? Thanks for your input Auggiedoggy.

 

[augiedoggy]

according to bobby at brewhardware the solar mppt version of this pump can still be somewhat controlled with pwm controllers...
The new version is actually made for brewing applications and comes with an actaul dual input pwm board designed to be used with it.

https://store.brewpi.com/mashing/brewing-pumps/td5-24v-brewing-pump

They are a bit pricey but not really because the tax comes off at checkout and I got it in like 3 days from Europe.

it is possible you can open the pump up you have and remove the mppt chip thats fighting the pwm. I am unsure but as mentioned above I want to say the older style mppt pumps use actual 17v motors and the mppt adjusts it for peak performance (thats the way the original Ts5 plastic version pumps worked) It looks like the newer style td5 uses an actual 24v motor.

the whole idea of the mmpt was whether the solar panel was in full sun of partial shade the voltage could go from say 22v down to 12 v and the pump speed would stay relatively the same. (using 24v solar panels)

 

[SanPancho]

We have one on our nano. I love it. No need for fancy controls, ball valve is fine since its magnetic drive.

Welded on blank tc flanges for sanitary. The only downside is they do NOT like getting water inside.

 

[augiedoggy]

We have one on our nano. I love it. No need for fancy controls, ball valve is fine since its magnetic drive.

Welded on blank tc flanges for sanitary. The only downside is they do NOT like getting water inside.

I actually bought my 2 for our nano... I bought Bobbys fittings that solder on the ends to make them sanitary tc fittings.

I plan on using them with pwm for the rims and sparge with flow control vs the crazy expensive VFD driven motors many larger systems are using.

The little tan plastic pumps are perfect for my home brewing setup and Ive had no reason to upgrade those.

 

[rudylyon57]

according to bobby at brewhardware the solar mppt version of this pump can still be somewhat controlled with pwm controllers...
The new version is actually made for brewing applications and comes with an actaul dual input pwm board designed to be used with it.

https://store.brewpi.com/mashing/brewing-pumps/td5-24v-brewing-pump

They are a bit pricey but not really because the tax comes off at checkout and I got it in like 3 days from Europe.

it is possible you can open the pump up you have and remove the mppt chip thats fighting the pwm. I am unsure but as mentioned above I want to say the older style mppt pumps use actual 17v motors and the mppt adjusts it for peak performance (thats the way the original Ts5 plastic version pumps worked) It looks like the newer style td5 uses an actual 24v motor.

the whole idea of the mmpt was whether the solar panel was in full sun of partial shade the voltage could go from say 22v down to 12 v and the pump speed would stay relatively the same. (using 24v solar panels)

I may take a look inside to see if the mppt circuit can be bypassed. Not a big deal at this point since I am able to attain some degree of speed control, just not enough for my OCD requirements. Thanks for your advice. I'll post what I find.

 

[rudylyon57]

Took a look inside, to the extent I was able, and was unable to remove the motor and its circuit board from the housing.

 

[cyberbackpacker]

@AuggieDoggie I have one the PWM TD5 3 wire PWM pumps from BrewPi. I hooked it up to 24vdc (red to + black to -) and it wouldn't run at all. I assumed it would run at normal speed without PWM hooked up.

So I hooked up the blue wire to a PWM output from my Brucontrolled Mega2560, and the pump still does nothing.

Any ideas?

 

[kpietro22]

Hey everyone, sorry to dig up an old thread, but I've been searching for some answers trying to control the flow of this TD5 pump and I am stuck. Reading through this thread, I can understand why a regular PWM controller like I purchased off Amazon would not work since it seems the chip inside prefers varying voltage...but out of curiousity, I decided to take the pump apart and discovered two unused solder joints next to Vcc and GND. They are labeled as VSP and F6. Do any of you have any idea what this may be used for? Might it be possible to solder to these connections with a 5V PWM source to override the chip to more accurately control the flow? Any/all help is appreciated! Thanks!

 

[TenaCJed]

If you figure it out, take pictures and tell us what you did... lol