I have an inverter that outputs a 0 to 20 mA signal in proportion to the speed. I need a 4 to 20 mA signal. Can the 0/20 be converted somehow? TIA
- posted
20 years ago
Analog signal conversion?
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- posted
20 years ago
Why? The scale will be a bit off but they are anyway. 0=4 and 20=20. I would hook it up the way it is and just remember that the low end is off by a %.
Unless you run the motor at low speeds it wont make any difference. No sense making it harder than it needs to be,,, at least that is my opinion.
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- posted
20 years ago
The signal O/P needs to be accurate as it is used as a motor speed reference in a process control loop.
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- posted
20 years ago
How would just the low end be out ?????? would effect the whole scale, basic maths.
sQuick..
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- posted
20 years ago
Well, all except the full speed, 20mA point. Basic, basic maths ;-)
daestrom
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- posted
20 years ago
There are lots of manufacturers that sell devices to convert anything to anything.
Try Weidmuller, Phoenix......