Stepper Current Requirements

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litterbox99
Posts: 49
Joined: Mon Oct 19, 2015 5:54 pm
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Stepper Current Requirements

Post by litterbox99 »

I'm in the process of building a 900 x 600 table.

I am trying to calculate how many amps I need to run 4 steppers @36vdc;

Using LO XLE900 X-Y table, Green Z table and future U axis rotary.

Looks like they use/similar Nema 23, high torque, 3-phase 5a motors.

If it were my DC circuit my math would say 4 steppers @ 5A each = 20Amps

I understand not all axis(s)'s would be running at the same time, maybe
two or three at the most using auto focus. I googled it, but got lost in the math
with idle current's and phasing.

There is a big difference in price of switchers @36vdc 10a ($67)
-vs- @36vdc 20a or more for around $100 +
Tech_Marco
Posts: 4646
Joined: Mon Jun 15, 2009 3:00 pm
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Re: Stepper Current Requirements

Post by Tech_Marco »

You right, both Z and U will not runs simultaneously with the X&Y. So, you need 10A for the combination of X and Y
Don't waste money for something never happened. But if you have more to spend, then send me a coupon from Starbuck :lol:

Marco
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