0-10V 4-20mA

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PCzerw
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Joined: Sun Apr 07, 2019 2:12 pm

0-10V 4-20mA

Post by PCzerw » Sun Apr 07, 2019 2:16 pm

Can I remove only one resistor to receive one 0-10V output and one 0-20mA?
Can I rescale 0-20 to 4-20mA?

Regards Piotr.

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Mr. CONTROLLINO
Posts: 18
Joined: Thu Dec 13, 2018 3:07 pm

Re: 0-10V 4-20mA

Post by Mr. CONTROLLINO » Tue Apr 16, 2019 5:43 am

Hello Piotr,

Yes this is possible.
Of course, you can define the IO so it is a 4-20mA.
The reason why 4-20mA exist instead of 0-20mA is because then you have a very define area 0-4mA where you have "0".
Imagine a Motor Driver controlled with 0-20mA … and for some reasons you have 0,1V on the line or 0,2V … not perfectly 0,0V … then the motor controller could think that he should drive with 0,5-1%. So, you define a very clear area 0-4mA where the motor driver is at 0%.

Regards
Marco

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