Quote Originally Posted by m_c View Post
You can't run a servo drive from an inverter, as the servo drive load is not constant, which at best would lead to something faulting out/just not working, and at worse blowing something up.
What you could do if you really wanted to use this servo, is build a rotary converter to produce the required 230V 3 phase, and get the phases as balanced as possible. All that's needed is a suitable 3 phase motor, some capacitors, and a couple switches (plus a relay and contactor if you want automatic starting).
Hi m_c,
Your first reply gave me an idea last night...
I opened up the enclosure of the drive and as you said, the AC from the 3 phases goes to 2 bridge rectifiers and a series of big caps.
So, using L and N single phase would use only 1 rectifier (and therefore geting it over worked...

Now, there is nothing in there requiering a phase shift between the 3 phases coming in....all the bridge rectifiers care about is 240V AC...
So, I decided to connect Neutral, Live, Live where the 3 phase were supose to go (L1, L2, L3)... This way the load is spread over the 2 briges as per 3 phase setup.

Tryed that this morning... All good! Motor happy, drive happy... (all stays cool )


These servo motor are really quiete! even at 3000 RPM ! amazing!


Laurent