motors drive board

[Alexander 62]

Hi.
I bought four stepper motors from China model 34HST9805-37B2 878 oz/in.
I need to run those motors at 1000 RPM or more. Motors spec.
Step angle 1.8 deg
Rate voltage 6.4
Rate current 2A
Phase resistance 3.2
phase inductance 15
8 lead wires
Rotor inertia 1.7 kg/c
I also have 48v power supply,
what would be the best driver board for those motors.
Best Regards Alex K.

[James Newton]

If you used a smaller power supply, the Linistepper (35v max) or SLAm (40v max) drivers would do nicely, depending on your load. If you really need 48 volts, you will want a geckodrive. Motor heating will likely be an issue.

A more important question is what sort of load will you be wanting to move? This page can help figure out what power supply and driver you really need for that load:
techref.massmind.org/techref/io/steppers.htm#Estimating

[Alexander 62]

My CNC router gantry weight will be about 60 lbs. and I need to run it from
200 to 250 ipm rapid speed with 5 mm pitch ball screw. I just wonder if
gecko drive g540 would be OK.

[James Newton]

Watts = IPM * Lbs / 531

so 250 * 60 / 531 = 29

29 watts at 2 amps is only 14 volts.

A Linistepper could easily drive that. Actually, the Linistepper would run the motors at 1.5 amps and say 24 volts for more than enough power.

A g540 would be complete and total overkill... But I'm not going to tell you how to spend your money. The 540 is an excellent driver and will /more than/ manage your needs.

[Alexander 62]

l also have 4 axis TB6560 driver board for those motors and 12V power supply but I can
only run those motors at 100 RPM with Mach3,and BPP connection.Am I doing something
wrong ?

[doorknob]

12 V seems a bit low - I would consider going up to 24 V on a TB6560 board...

[Alexander 62]

The power supply is 24V not 12V sorry for mistake. I woluld like to know if those motors
could run more then 100 RPM with TB6560 driver controller.

[jschmitt]

You have high Inductance motor so you will need a lot of voltage.
Voltage = 32 x (square root of mh) (Copied from another thread)

[doorknob]

Originally Posted by jschmitt You have high Inductance motor so you will need a lot of voltage. Voltage = 32 x (square root of mh) (Copied from another thread)

However the TB6560 will not support such a high voltage - it's risky to go much higher than 24V...

[James Newton]

Higher voltage is only required for maximum speed
24 volts should be fast enough.

Please check google for the problems of others have had with those cheap chinese drivers

[RomanLini]

Sorry James I'm not trying to talk him out of a Linistepper sale, but just wanted to point out that driving a big size 34 motor at 1000 RPM (16.7 RPS) is very optimistic, and with a size 34 motor with inductance of 15mH it's verging on the impossible (or at least in specialty driver territory).

Size 34 are best consdered to be larger slower motors.

He said 250 IPM which is 106mm/sec and with his 5mm lead screws that is 21 RPS of the motors. I think that is completely unrealistic from those motors.

[SORCHEROR]

i would run gecko 201 or 203 drivers and a 70 volt supply,tutorid not linear, to get more torgue at higher speed if you want 200-250 ipm with a 60lb gantry