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D5 Variable vs Non Variable if using a fan controller to control? - Page 2

post #11 of 16
Thread Starter 
ok what I saying though is why would they put this on the description

The Koolance PMP-450 is a reliable high-flow pump with built-in speed control knob. It handles external control throttling better than the PMP-450S.


it makes it sounds like the one without the speed controller on the back has issues being controlled.

Basically what I am saying is if I were controlling the 450S and the 450 on a fan controller would there be any difference.
post #12 of 16
Quote:
Originally Posted by oicwutudidthar View Post

ok what I saying though is why would they put this on the description
The Koolance PMP-450 is a reliable high-flow pump with built-in speed control knob. It handles external control throttling better than the PMP-450S.
it makes it sounds like the one without the speed controller on the back has issues being controlled.
Basically what I am saying is if I were controlling the 450S and the 450 on a fan controller would there be any difference.

Your best bet is to contact the manufacturer, sometimes marketing can be confusing! It's unlikely that anyone would buy both pumps so your question has a not so good chance of being answered.
post #13 of 16
Quote:
Originally Posted by AMC View Post

The question was answered; if not, then fix the way you asked it.
It is not marketing jargon.
Without speed control knob -> use a high wattage fan controller.
With speed control knob -> use direct power supply connector. No point hooking it up to a high wattage fan controller. BECAUSE THAT WOULD BE REDUNDANT.

AMC I will say thank you for answering his question. I enjoyed the incite. Rep+
     
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post #14 of 16
The notes are specific to the 450S vs 450 which are two very different pumps. The 450S is the STRONG model which is intended to run high speeds at 24v and extremely powerful at 24v...but it also don't like voltage less than about 11V so it doesn't slow down for silence as much as the regular 450. The regular 450 will go down to about 8v so yes it would have more speed control adjustability at low speeds using a fan controller for lower speeds.

There is howere one more fixed speed D5 out there which is the BASIC model or mcp655b. That is basically the normal 450 stuck at setting 4..but it too should accept 8v.

As far as what has the lowest D5 speed range...the D5vario/PMP450/MCP655 would be the better option. You can then control both by manual speed setting as well as by voltage.

Now if only they would produce a PWM controlled D5..you would really have some range...hopefully some day.
    
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post #15 of 16
Quote:
Originally Posted by AMC View Post

Yes the adjuster in the back changes the voltage going into the pump motor.

dude... i'm so sorry. lol. this was an entertaining thread to read tho. biggrin.gif
post #16 of 16
Thread Starter 
Quote:
Originally Posted by Martinm210 View Post

The notes are specific to the 450S vs 450 which are two very different pumps. The 450S is the STRONG model which is intended to run high speeds at 24v and extremely powerful at 24v...but it also don't like voltage less than about 11V so it doesn't slow down for silence as much as the regular 450. The regular 450 will go down to about 8v so yes it would have more speed control adjustability at low speeds using a fan controller for lower speeds.
There is howere one more fixed speed D5 out there which is the BASIC model or mcp655b. That is basically the normal 450 stuck at setting 4..but it too should accept 8v.
As far as what has the lowest D5 speed range...the D5vario/PMP450/MCP655 would be the better option. You can then control both by manual speed setting as well as by voltage.
Now if only they would produce a PWM controlled D5..you would really have some range...hopefully some day.

THANK YOU

This is what I wanted to know.

+rep
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