36 vs 48 volt power supply?
javaduke opened this issue · comments
I'm a bit confused, I ordered the servo that James suggested, and it says 24-36 Volt, but the power supply is 48 volt - so is it ok to power the servo with 48 volt instead of 36, or should I get the 36 volt power supply?
OK, thanks, hopefully it won't burn down :) It is confusing though, the product description on StepperOnline says 20-50VDC, the label on the integrated controller says 24-36V and the power supply is 48V...
I note that James had his first servo die, and 48V is close to the rated maximum; that's not a lot of headroom for transients, say from back-EMF. The servo's rated torque is at 36V, so it's not crazy to run it on 36V, with more headroom.
I will be running my servo at 36V for this reason, and if I swap out for 48V due to insufficient torque, I'll plan either to adjust the nominal 48V supply a few volts lower, or to add transient protection; at least a large-value capacitor, and maybe a crowbar shunt to avoid exceeding 49V. But I don't expect that to be necessary.
Using a 48v power supply adjusted down to 42v.. good for 2 years now..