Choosing a Power Supply for Retrofit?

[pfeist]

Having more or less settled on using a Gecko drive (probably the 201) for my stepper retrofit....

I'm now thinking that at some point I'll need a power supply!

I'm a bit "slow" when it comes to electricity.... that is, I'm ignorant...

What I THINK I need;
A power supply that will supply up to 70 VDC (the maximum that the Gecko 201 will handle, as I read the specs), at 6Amps (I have 3 steppers rated for 2Amp per phase...2amps times thee motors; 6 Amps?).

Given this, should I be looking for a 60-70VDC supply at 7Amps (a bit of headroom for the motors)???

There are currently 1250 "Power Supplies" in the Business and Industrial section of eBay...
you'd think at least ONE of them would be more or less what I'm looking for, wouldn't you?

Are there any other considerations when looking for a Power Supply that I"m not aware of?

I don't have the money to buy one immediately... I want to buy the Gecko's first, then in another month or two, I'll get the power supply about the time I have a good start on the mechanicals of the retrofit...
I have a long way yet to go!

Any advice is appreciated!
Paul F.

[pacosoide]

That kind of PS will cost you plenty. You are looking at a 450 watts.
You are looking at some serious money there. $300 to 500 for that baby.
Jose.

[pfeist]

Well....
A few days ago, I bought an adjustable 0-60V 0-4Amp regulated power supply on ebay for $104 shipped...
So I'm hoping that's gonna do for me...
According to another board, 3 Gecko's should require no more than 4A ( I won't be loading all three motors at full rated amperage at the same time).
So.. either I got a power supply for my CNC retrofit, OR, I got a power supply for doing some plating later.

Paul F.

[trubleshtr]

Your gonna want a little more than 6 amps due to inrush currents, what voltage are the steppers rated?.
Is the 2A. rating max amperage allowed or the nominal amperage for the motor? When it comes to power supplies you should really do the math.........

[pfeist]

That's kinda what I was asking in my FIRST post... (Two weeks ago...)

NOW you tell me! :-/

Oh well.. Like I said, either it works, or I use it for other projects later.

Paul F.