Convert 0-10V to +/-10V

ndzied1

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• Mar 23, 2005

• #1

I'm trying to find an analog conditioner to convert a 0-10 V signal to a +/-10V signal and not having much luck.

Has anyone ever come across a beast like this?

 

Ken Moore

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• Mar 23, 2005

• #2

I believe Redlion makes such a device.
Here's a LINK to the spec sheet.

 

Jim Dungar

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• Mar 23, 2005

• #3

I have used some from Absolute Process Industries (API).

 

craigsimon

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• Mar 23, 2005

• #4

Action Instrumentation also makes these for realitively cheap. They can be found at http://www.actionio.com/products/actionpak/signalcond/ap4382.html

 

g.robert

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• Mar 23, 2005

• #5

We use relay to reverse polarity to load sometimes.

 

MrQ

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• Mar 23, 2005

• #6

I have used one from Weidmuller(wwwweidmuller.com)

Do not use relays to switch polarity unless that you have a "slow" system where you don't have to change fast from + to - voltage. I have just spent many hours of troubleshooting a problem like this.

 

g.robert

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• Mar 23, 2005

• #7

If you have a existing 0-10vdc and you need -0 to 10vdc just swap the polarity.

 

ndzied1

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• Mar 23, 2005

• #8

Thanks all for the replies. The Red Lion looks like exactly what I need. The signal is to drive a proportional valve so I couldn't switch polarities w/ a relay since the valve would go wacky when I did.

 

Rod

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• Mar 23, 2005

• #9

Swap with a relay? NOOOOO!

A backage coming to position, or trying to hold position would NEVER satisfy position with a relay swap. Nope-nope

Rod (The CNC dude)

 

g.robert

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• Mar 23, 2005

• #10

I should clarify how we use the relay. When the signal is proportional both ways (in, out, left, right, etc.) and the controller must go from 0 to 10 then back to 0 before it can start the other way, I have used a relay to swap polarity as the operator control moves off center to shift the other way. In this simple scenario, it works fine.