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Helping choosing a PWM for pump

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BeirKaiser

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Hello everyone,

I received bought a pump for my homebrew setup. How does everyone control the speed of the pump? I’ve found so few mini chips with knobs but no idea what to pick.
Stats:
  • Name: Solar Water pump
  • Brushless motor
  • Material: Plastic
  • Color: Black
  • Input/Output: 1/2 "male thead
  • Voltage: 12 V DC
  • Nominal Maximum Current: 1000MA
  • Power: 22 W
  • Max Flow: 800 L/H
  • Max Water Seat: 5 m
  • Max circulation water temperature: 100 ° C

It only has a motor +/- and power +/-, no third wire. Or a brake. No idea what I’m doing 1611343286393.pngDCD8A939-E05A-4C6D-9EB2-0D953008421C.jpeg90F8B6D8-0EF3-439A-AF63-A7D7B5A4D0D4.jpeg09F3B844-F5B6-4FDD-B8C6-32D526C65997.jpeg
 

eric19312

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It's never occurred to me to try to control my pump's speed. I think most of us put a ball valve on the output of the pump and use it to control the flow coming out of the pump.
 
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BeirKaiser

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It's never occurred to me to try to control my pump's speed. I think most of us put a ball valve on the output of the pump and use it to control the flow coming out of the pump.
I didn’t want to increase the pressure, made more sense to me to lower the motor’s speed to lower the flow rate
 
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BeirKaiser

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brewster2012

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Sounds like you need a simple voltage controller (variable resistor) instead of a PWM.


The easiest way to control a relatively low current 12-24V motor is by using a generic analog DC motor speed controller. This type of controller has a potentiometer to vary the speed of the motor. These controllers can be found with a wide range of power ratings.
 
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BeirKaiser

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Thank you for everyone that helped! I contacted several companies, most of which in broken English, but I finally found a solution! Two birds with one stone in fact! This will control my pump and convert it to AC!
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