Will this work with UHU?
U ... 50V
I ... 7,5A
3000 turns/ min.
600W
Encoder with 500 lines will be mounted.
Will this work with UHU?
U ... 50V
I ... 7,5A
3000 turns/ min.
600W
Encoder with 500 lines will be mounted.
Hello Jakubik!
Yes this will work with UHU, but you need a good Cooling for the Mosfets. 7.5 Ampere are too much for a standard Cooling.
My Maschine run with 48 Volt, max 7.5 Ampere Input and encoder with 500 lines faultlessly.
.
Greatings
Anton
Edit: Excause me my bad English. I am coming from Austria.
Slight calculation error. 500 lines are read 4 fold. This means 2000 steps with a 500 cpr encoder. Also 100000 steps per second.
Mach can only output about half. so you'll need the step multiplier (built into the UHU)
Erik Jan
What goes down, should come up.
Hallo!
That's right, but you can set the Uhu from four to two signals.
Now, we have 50 000 signals. Mach can 100 000.
Greetings
Anton
Hi Anton,
I am planning to run my motors at 110V 7.5 Ampere! what should I use. . think water cooling.
I think the peak current is rarely utilized, however have you observed overheating of your heatsink while working?, what other problems have you come across?
Can we have a picture of your control box?
RGDS
IRfan
If your motor is rated at 50V and your power supply should be only slightly higher to make up for controller losses. With the 110 volt supply, the drive will be outputting very narrow pulse widths, increasing EMI and losses (heat) in the windings.
You can add inductors in series with the motor but would not be the best way to fix the heat issue. The correct way would be to lower the supply voltage.
Try running the motor at rated RPM without a load to see if it still heats up - this will increase the pulse width to overcome the BEMF and lower the losses dramatically. If this fixes the heat issue then power supply volatge is definately the root cause.
Aaron
Dear Irfan,
Aaron is probably speaking about my motor (see the beginning of this thread). I was testing this motor with lower voltage, about 30V (not 50V) and the motor was after few minutes very hot, even if it is not moving. It will be in the Z-axis, so it is moving not so often. Maybe helpful will be something, what will disconnect power to the H- bridge, when the motor is not moving. I think about relais card, controlled from computer. Disadvantage will be, that there should be before each movement in Z-axis in G-code written M03 and then M05 after movement.
Jan