[daniellyall]

what size power supply should i have to run two stepper motors run on 213v,

Brand New NEMA34 Hybid Stepper Motor 85BYGH450B-06D
these stepper motors
Step Agle - 1.8+/-5%
Insultion Resistant - 500V DC 100MΩ Min
Insultion Strength - 50Hz 1Minute 500V Min
Ambient Temperature - -20~+50 degree
Temperature Rise - 80 Max.
Radial Play - 0.02mm Max.
End Play - 0.1-0.3mm
Step angle: 1.8
Current: 5A
Resistance: 2.9Ω
Inductance: 12mH
Motor length: 113mm
Shaft Size: 14mm
Holding Torque: 6.3 N.M
Weight: 2.8Kg
Lead Wire(No. ): 4

[bmellis]

Hi Danny,

The following is provided as a starting point - Hopefully someone with more experience at this than me will also reply.

The Power Supply Basics document on Gecko's website may also assist.
(From http://www.geckodrive.com/support/st...ly-basics.html)

Input Voltage:

Many power supplies will support an input voltage (from the mains supply) from 110-230V, just make sure it has "auto ranging", or is set to match you local supply.

In terms of output voltage and current:

Gecko suggest Vmax = 32 * sqrt(inductance) which would be around 110V for 12mH inductance.

That being said few stepper drivers support a DC supply of 110V are uncommon.

A lot don't support more than 50V, a few will support up to 80V.
If you have already chosen a driver, don't exceed its maximum voltage.

Typical output voltages that I've seen run up to 48V; however I'm sure that 60-80V supplies exist.

From a current perspective - it will depend on how the motors are used -

More often than not, the motors won't be both drawing there maximum current of 5A at the same time.
Also a motor might draw 5Amps peak (for a short period of time) but it won't draw 5Amps RMS which is how the power supply is typically rated.

Taking into account the above, a smaller current output power supply can be used.

While it is just testing setup at the moment - a unloaded, a single 48V 7.3A supply that I have is driving a 4Nm and 8Nm motor at the same time.

It is recommended to make use of the current limiting feature of the driver, so that your motor(s) aren't damaged.

Hopefully this helps, and gives you a starting point.

Cheers.

what size power supply should i have to run two stepper motors run on 213v,

Brand New NEMA34 Hybid Stepper Motor 85BYGH450B-06D
these stepper motors
Step Agle - 1.8+/-5%
Insultion Resistant - 500V DC 100MΩ Min
Insultion Strength - 50Hz 1Minute 500V Min
Ambient Temperature - -20~+50 degree
Temperature Rise - 80 Max.
Radial Play - 0.02mm Max.
End Play - 0.1-0.3mm
Step angle: 1.8
Current: 5A
Resistance: 2.9Ω
Inductance: 12mH
Motor length: 113mm
Shaft Size: 14mm
Holding Torque: 6.3 N.M
Weight: 2.8Kg
Lead Wire(No. ): 4

[ger21]

72 Volts, 7 amps or more.

[victorofga]

Daniel

on your other post I said the 3volt 5 amper looking too little without any expertise..
that's why it couldn't perform more..

[daniellyall]

i think what i need to do is get bigger stepper?? and the correct power supply for this machine.
i think the problem is the power supply im useing is to small for the motors im running, also it could wall be the steppers are to small to move the y axis gantry as it will way around 300kg. what size to get i dont know.

[victorofga]

Daniel

im not sure if your gantry can weighing 300 kg..

try to ask help first from the dealer sold your machine.. next you can try jcut on ebay... mightbe it is their machine..

also on ebay present wantaimotor.. looking very much this motor originating from them..

NEMA 34 Stepper MOTOR1090OZ in 5 6A CNC Mill Driver 7 8A Power 85BYGH450D 008 | eBay

try to using their setup, since electronic is not """difficult""" however without experience you cant figure out yourself.. as you can see
for a very low price you get even a breakpout board..

you might need 2 powersupply.. if, and I say if, need to change anything in your system..
this machine you purchased many other folks purchased too..
they are using..

so first try to find who manufactured the machine.. even you have no warranty already, they will answer you..

I really sorry your situation that you have a good equipment and cant set it up..