There is no clear post as to what to do when you only have single phase power. One post the person said they bought a "variator" off of Amazon, but what's a variator? Did they mean VFD? The power supplies in the controllers can be changed to operate on 240V, but they're still 3phase. VFD's are meant for the control of a single motor, does a VFD work as single to 3 phase converter when powering robot controllers? Does anyone have any definite, clear solutions for powering a robot with single phase?
Single Phase Power For Rj3 Controller
-
Qwerty123 -
April 12, 2023 at 3:45 AM -
Thread is Unresolved
-
-
kwakisaki
April 12, 2023 at 7:25 AM Approved the thread. -
Something was probably lost in translation. The OP probably was referring to a Rotary Phase Converter.
-
I'd be keen to know more about using a VFD, but worry it would harm the controller. I have found the RPC's provide dirty power and robots wouldn't run at all, however diesel generators are fine.
-
I worry too about VFD's harming the controller since their output constantly changes as they are designed to read the state of a motor and vary their voltage and current outputs for smooth accelerations and preventing motor overloads. So I would not expect and steady consistent 3 phase output from a VFD.
A rotary phase converter would be a more likely candidate, but as DP mentioned, not all of them give you an actual three phase output. Not all of them give three waveforms that are 120 degrees apart, some output two waveforms at 180 degrees and a third with a slight offset.
Considering the cost, scarcity and overall pain in the a to get some FANUC parts I'm not too inclined to spend a couple thousand on RPC just to end up having to pay several more thousand replacing what ever gets burned up in the controller.
Hopefully someone out there has had success with something?
-
Something was probably lost in translation. The OP probably was referring to a Rotary Phase Converter.
He also says he "set it to 50Hz", it sounds like VFD, not RPC.
I was always under impression, that VFD generated pwm waveform, is not good enough for running general electronics. -
I agree with pdl that something was lost in translation. Not sure why the fixation on VFD unless you're using it to run a generator. Fanuc R-J3 robot controllers require 200-240VAC 3-phase at 50-60 hertz. Many have transformers to convert various voltages around the world to that voltage. Exception is the R-J3 Mate controller for small robots with the single phase option that will run with 200-240VAC 1-ph.