power supplies for arc euro steppers

[razzaParticipant @razza]

[razzaParticipant @razza]

just bought a 350ncm bi polar stepper and driver card from arc euro trade

im trying to figure out the power supply i need for this can anyone shed any light on this setup as instructions state that the current is 4.2 amps per phase so this seems to mean i need a 8.4amp power supply but on other side of sheet it says the arc eurotrade 160-020-00201   9.04a   controller will drive this motor at the rated power if set up correctly and connected toa smoothed dc power supply rated at 2x the the current setting used on the controller

so does this mean i need to set the controller to 4.2amps and power supply of 8.4amps

or set the controller to 8.4amps and a power supply of 16.4amps 

 

if someone could shed some light on this it would be much apreciated

 

regards mick

[john swift 1Participant @johnswift1]

Hi Mick ,

 

you only set the motor current on the stepper motor driver

 

provided the power supply can supply  the total current needed ( 8.4A in your example  )

 

you just to make sure the output voltage is within the range of that required by the driver

(usually between 24v and 80v )

 

 so you could use for example a 60V 15A power supply

 

If you use an unregulated supply , you need to ensure the off load vottage is not 

more than  the maximum for the driver ( its better to stay several volts under the maximum)

 

 John

Edited By john swift 1 on 27/11/2010 20:39:12

Edited By john swift 1 on 27/11/2010 20:39:51

Edited By john swift 1 on 27/11/2010 20:42:54

[WeldsolParticipant @weldsol]

Hi Mick have a look at this site

http://www.motioncontrolproducts.com/

 

This is where I got all my motors / drivers / power supplies from

 

Paul

[razzaParticipant @razza]

thanks guys seems clearer now

 

regards mick

[M.MarinoParticipant @m-marino]

For those motors the Voltage would be a maximum of 59.8665V @ 8.4A should do you just fine. The formula I used is V= 32 * sqrt L (mH) so 32 * sqrt3.5 = 59.8665 approx. Hope this helps. Since that is an odd size you would be looking to build a power supply or deal with the motor being under powered.

Michael

[TerrydParticipant @terryd72465]

Hi Mick,

You could do worse than to look on the ARC Eurotrade site itself.

Regards

Terry

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