Advice, need power supply for 12N.m Nema 34 Hybris Stepper.

[disneytoy2]

Hello!

Quick advice. I just purchased Stepper Motor Drive Kit 12NM NEMA34 Hybrid Servo Closed Loop Stepper Control Kit

Can anyone suggest a Power Supply? I can't find it now, but I saw a youtube video, where the reviewer said he made a mistake in buying a switching power supply, instead of the big round transformer power supply? Which is better?

Would a PSU be able to power 2 of these motors, or do I need 2 PSUs.

I think I read I need a 70v PSU, I mistakenly ordered a 24v switching PSU.:-(

Thanks for your advice!

Kenny

1 Drive 2HSS86H
1 Motor 86J18156EC-1000
1 Encoder Cable 3M

Drive functional characteristics
Model 2HSS86H
Type Stepper drive
maximum peak current 7A
Impulse response frequency 200KHz
Voltage 60~80VAC/DC40-110V
Protective function Over voltage, over current, tracking error, overproof

Advantage no step to lose, Low noise, little vibration and high efficiency, low heat
Continuous overload Output an alarm signal

Motor electric parameter
Model 86J18156EC-1000
Step angle/phase 1.8 degree 2ph
Rated voltage/current 3.92V/6A
resistance 0.72ohm
Inductance 5.5mH
Hold torque 12NM
Rated Speed 1000RPM
Encoder 1000line
Class of insulation B
Rotor inertia 4000 g.cm2

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[Jim Dawson]

This one would be my first choice https://www.automationtechnologiesin...vac-or-230vac/

Your drives are rated at 40 - 110 VDC so getting as close as possible to the upper limit is desired, better motor performance. The PS above would run both motors at full load with no problem.

[disneytoy2]

Thanks Jim, That looks good!

[disneytoy2]

The seller of the motor suggested I use a 60 VAC 400-500w power supply. I've never worked with AC and a motor. Any advantages or drawbacks? I may need to go with a under $100 PSU to start. Limited budget.

[ger21]

You'll likely need to build your own AC supply, as they are not as readily available as DC supplies.

[Jim Dawson]

OK, then all you need is a transformer, this one can be wired to get 60VAC output with either 240 or 120 V input. https://www.ebay.com/itm/General-Sig...6677:rk:1:pf:0

[disneytoy2]

Thanks again Jim! Very helpful. I'm learning a lot from you.

[Jim Dawson]

My pleasure to help out.

[NUDEcnc]

Voltage 60~80VAC/DC40-110V

Question is what is better??

If I would like to squeeze every last bit of performance should I go with AC or DC?

DC switching power supply like:
https://www.aliexpress.com/item/CNC-...c-bc3af880d493

Should I go with 90, 100 or 110V and wait for magic smoke

or 70 V transformer like:
https://www.aliexpress.com/item/New-...2e8c3c00DcytsI

A which option will be better to achieve the best performance?
I do understand that controllers and motors might need extra cooling.

[Jim Dawson]

Question is what is better??

If I would like to squeeze every last bit of performance should I go with AC or DC?

It doesn't matter, if you input AC to the drive it is rectified to DC in the drive anyway.

DC switching power supply like:
https://www.aliexpress.com/item/CNC-...c-bc3af880d493

Should I go with 90, 100 or 110V and wait for magic smoke

You don't want to use a switching power supply to run a motor drive. Use an unregulated transformer type power supply, much better for running motor drives.
https://www.automationtechnologiesin...vac-or-230vac/

or 70 V transformer like:
https://www.aliexpress.com/item/New-...2e8c3c00DcytsI

A which option will be better to achieve the best performance?
I do understand that controllers and motors might need extra cooling.

The 70V transformer would work fine. As far as performance it doesn't make any difference AC or DC input.

[NUDEcnc]

The 70V transformer would work fine. As far as performance it doesn't make any difference AC or DC input.

So the question still stands.
Voltage 60~80VAC/DC40-110V

Option 1: 80VAC transformer Connect to the driver - converted by the driver to 80VDC

Option 2 110V transformer - simple AC to DC converter - 110VDC conected to driver.

As I understand, at the end diver will be powered 80V or 110V DC ?

So option 2 is a better solution?

Based on the torque graph, this could make a HUGE difference, especially at high RPM !!!
https://www.cnczone.com/forums/attac...d=407620&stc=1

[109jb]

80 vac rectified becomes 113 vdc. Again, no difference.

[Jim Dawson]

What 109jb said. Multiply AC by 1.414 to get DC voltage.