Dosage pump

[MrQ]

Hello,

All dosage pumps I have ever used has a 4-20mA command signal and seperate supply.

Now, the customer has a pump with a 24 Volt DC motor. Speed is to be controlled by varying supply voltage 0-24 V. It's a small motor and I have not yet found out the current but it is low.

So, I need some way so that a 4-20mA or 0-10V signal from my PLC can control 0-24V to the motor. Ideas???

 

[Eric Nelson]

Basically the same way you'd control a 90V or 180V DC motor. There are 24V versions available. For example, THIS ONE from Dart will do 0-24V, and accept a 4-20ma control signal (with an option board).



-Eric