Maxpak

[fatjonnie]

I am trying to regulate the speed, and torque settings for a MaxPak III with a PLC. These were origionally controlled by speed pots.

The problem lies with the fact that the drive uses 0-15 Vdc as its control voltage. My signal conditioner is 0-10 Vdc. Has anyone run into this before?

 

[DRWeig]

Here's an inexpensive rescaler.

http://www.kele.com/templates/product.aspx?id=4097

I'm sure there are others available.

Good on ya,

Goober Dave

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[fatjonnie]

Thanks for the quick response, that looks like it would do the trick. This would scale the output to the range I am looking for. Would I have to use two of these units to achieve regulation from my 0-10 Vdc isolated signal conditioner.

The way I have it in my head is that I would need to take the 15v from the drive, bring it to 10 Vdc. Then run it through my signal conditioner. Then take the 0-10 vdc from the signal conditioner and rescale it to a 0-15v output back to the drive.

Am I missing something obvious?

 

[DRWeig]

It doesn't look like you're missing anything, but I don't know the particulars of your signal conditioner or the control loop.



Good on ya,

Goober Dave

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[itsmoked]

Can't you just scale the input?

(For a 1725 type application) Seems like you should be able to set something like 15V = 2585RPM so at 10V you have 1725RPM.

Or am I missing the whole point?

Keith Cress
kcress -

http://www.flaminsystems.com