I have heard that sometimes you can get around that by putting a motor
run capacitor between one of the live phases and the unconnected input
power terminal.
That can sometimes trick the drive into thinking that it has power at
all of the terminals.
Back when VFDs were very expensive the way to do this was with a static
or rotary phase converter.
I have a 5 hp 3 phase motor on an old turret lathe spindle that I run
off a rotary phase converter that I put together a long time ago. It
works. You can find how to instructions on how to build one on the
net. You will need a 3 to 10 hp 3 phase motor as a base device for
the converter.
You can also make a static 3 phase adapter for your existing motor
simply by adding some capacitors to "power" the third phase. Info for
that is also on the net.
Dave
On 1/1/2018 3:46 AM, Nicklas Karlsson wrote:
Usually there is a diode rectifier at the input but I guess they also measure
voltage and refuse to run then to low so experience is important.
On Sun, 31 Dec 2017 18:45:44 -0600
John Figie <[email protected]> wrote:
I have a 5 hp 240V 3 phase induction motor that is for a lathe spindle. I
only have single phase 240V power. It seems that most 5 hp vfds do not
allow single phase input. I found this: http://www.gohz.com/5hp-vfd
Does anyone have experience with GOHZ or other affordable 5 hp drives that
will run on single phase?
John Figie
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