Questions on the original UHU controller

[southernexplore]

What is the highest voltage and amperage you can run on the original boards?

I know its ratings but I was wondering if anyone has tested the old one or has been running them at higher voltage and amperage outputs with no trouble. I have 3 of the 10A/60V boards that have run perfect for almost 2 years now but with only nema 23 size servos on them.

I would like to run a lathe spindle with one and was wondering if the Keling servos would work! (specs for one of them is below)

constant torque: 1.2 N.m ( 170 oz-in)
-peak torque: 6.0 N.m (850 oz-in)
-max. speed at voltage constant: 4200 rpm
-terminal voltage: 72 VDC
-continuous current: 8.8A
-peak current: 40 A
-torque constant (KT): 0.14 Nm/am
-voltage constant(KE): 15 V/100rpm
-resistance: 0.52 ohm
-inductance: 1.8 mh
-inertia: 3.39 kg/cm^2

They have a larger one but I am not sure it would work.

Constant Torque: 1.6 N-m ( 226 oz-in)
Peak Torque: 8.0 N-m ( 1125 oz-in)
Max Speed at Voltage Constant: 3200 RPM
Terminal Voltage: 90V
?3?.03
Constant Current: 7.8A
KL34-180-90
Keling Technology Inc
Peak Current: 40A
torque Constant (KT): 0.182 NM/am
Voltage Constant (KE) 18.95 V/rpm
Resistance: 0.925 ohm
Inductance: 2.5 mh
Inertia: 3.4 kg/cm^2


I would probably run it with a belt drive 2:1 ratio motor to spindle.

Any thoughts are much appreciated!

Thanks
Tommy

[contactirfu]

A HP-UHU kit would be the best for you. email uhu.highpower(at)gmail(dot)com

it would get you rid of all difficulties, however I have seen people on the German forum use the original design for motors upto 2KW, but not sure how stable they were or if stable what modifications were done.

RGDS
IRfan