I want some advice about power supply for 4 stepper motors

Hi all!

I want to drive 4 motors for a project.

3 are this nema23 (57HS09):

http://www.leadshine.com/UploadFile/Down/57HSxxd.pdf

1 is this nema34 (86HS35) :

http://www.leadshine.com/UploadFile/Down/86HSxxd.pdf

The 3 drivers for nema23 (DM556):

http://www.leadshine.com/UploadFile/Down/DM556m.pdf

and the driver for the nema34 is this (DM1182):

http://kocomotionus.com/wp-content/uploads/2012/09/dm1182-digital-stepper-manual-final.pdf

My question is: wich power supply do i need for the four drivers?
Current in my country is 220V

Thanks in advance!

Daniel

Check for the amps- If you have 3 amps per stepper and you have 4 steppers, you will need a 12 amp power supply to account for if you need all the amps.
Check the voltage. Voltage is just whatever 1 stepper needs.
You can get the power supplies on ebay pretty cheaply.

Alexisa:
Check for the amps- If you have 3 amps per stepper and you have 4 steppers, you will need a 12 amp power supply to account for if you need all the amps.
Check the voltage. Voltage is just whatever 1 stepper needs.
You can get the power supplies on ebay pretty cheaply.

Hey Alex.

the part that confused me is in the specs of the drivers beacuse the DM556 says:

Supply voltage: min 20, typical 36 max 45 VDC

and the DM1182 says

Supply voltage: min 80(113) typical 110(155) max 150(212) VAC(VDC)

Would this power supply do the job?

Thanks!

Daniel

Alexisa:
Check for the amps- If you have 3 amps per stepper and you have 4 steppers, you will need a 12 amp power supply to account for if you need all the amps.
Check the voltage. Voltage is just whatever 1 stepper needs.
You can get the power supplies on ebay pretty cheaply.

You don't understand steppers and stepper drivers. Please do some research before
confusing things.

The 3 Nema23's have drivers needing 20 to 45V DC, So something like 36V 5A might handle
those (perhaps some more amps if driving all the motors heavily at high speed), but expect
less than 1A at idle from that supply, peaking with higher speeds to max of 2 or 3A per
motor (probably).

The Nema34's controller needs 80 to 150VDC supply, 3A perhaps? Higher voltage
gives higher top speed. It should draw roughly 150mA at idle due to the larger step-down.

One rule of thumb I've seen is 1/2 the winding current plus a bit for the supply. Thus 5A
should see two 4A motors happily (assuming you won't be driving all three motors full out
if its a normal CNC style machine).

here is a diagram and specs of the motors and drivers
so you can get an idea and help me! :slight_smile:

i want to choose the power supply and my local current is 220V
I also want a power supply that holds the power request imagining
all motors at max power (worst case scenario) just to be safe.

Thanks in advance

Daniel

It would make life a lot easier if all of your stepper drivers were capable of using the same supply voltage.

...R

Robin2:
It would make life a lot easier if all of your stepper drivers were capable of using the same supply voltage.

...R

why? Cant?

if is use this driver for the nema 34

http://www.npoatom.ru/upload/2_DM2282.pdf

can i avoid 2 different power supplies and just plug this driver to my outlet wall?
(it says it supports 220AC and that's my country's current)

and for the 3 nema 23 2 powers supplies like this one:

http://www.aliexpress.com/item/360W-36V-10A-Single-Output-Uninterruptible-Adjustable-ac-110v-220v-to-dc-36v-Switching-power-supply/1872393525.html

is it ok with this config?

That first unit recommends using isolation transformer since its not isolated - your
stepper will be directly connected to the mains.

Part of the point of the DC supply is to isolate you from dangerous voltages, but 80V+ DC
is already dangerous. Anyway take some care about your safety either way.

Your 3 NEMA23's only need 5 or 6A, just one of those 36V supplies is enough!

Remember the DC supply gives out less current than the motors see because stepper
driver is a chopper.