Page 1 of 1
Brushless DC Servo Motor Amp for use w/5234 eTPU?
Posted: Mon Sep 06, 2010 9:15 pm
by Ridgeglider
Does anyone have suggestions for some small and efficient servo amplifier boards for driving a brushless DC motor from the 5234 eTPU pins? The motor is running at ~250-300W continuous, ~5200RPM max no load, and pulling around 6-7A at 48V. I'm looking for motors and ~4000 count/rev hall-effect or opto encoders too, so suggestions welcome there too.
Re: Brushless DC Servo Motor Amp for use w/5234 eTPU?
Posted: Mon Sep 06, 2010 9:32 pm
by v8dave
Hi RG,
What are you looking for here? Something cheap for hobby use or commercial?
I found a 48V H-bridge driver design here that would work with the eTPU.
http://www.techknowman.com/Electronics/ ... BRIDGE.htm
For the motors, check out some of the robot builder websites for low cost options but not sure if they offer the power output you need.
Cheers,
Dave...
Re: Brushless DC Servo Motor Amp for use w/5234 eTPU?
Posted: Tue Sep 07, 2010 9:52 am
by Ridgeglider
V8, Thanks for link to schematic. Instead of a schematic, I'm looking for an off-the-shelf, board-level, industrial product as our volumes are quite small. It should also be a 3 phase driver for use with a brushless dc motor not a simpler H-bridge: ideally with current monitor, encoder and protections for things like over current, short circuit, over/under voltage, over-temperature etc. There are lots of these boards out there, but was wondering if anyone had success connecting a particular one to the eTPU?