New update on STMBL

Answering the cost concerns, the prices andy shared unfortunately are not realistic now. Up to now I spend 190-200€ for each board.
I can drive 3.5-4.0W servo (the ABB arm are 4.5W) with the v5, the main problem I'm facing is the need for a proper rectifier with a decent power factor, we are working in developing one with pfc, brake resistor and maybe also bidirectional.
Going 600vdc open to 3phase rectifier and I think less capable of handling high currents for lower voltage motors. Then we should keep two different versions of the board.
Btw I think is not much difficult to make it 600v compliant, more clearance, the isolator (SI8621) should be fine, change the cap, recalculate the resistor voltage div, change the connectors...
Who knows if is possible to use these boards in a industry plant? Is possible to certify a machine using these boards? (CE for example here in Europe)

What igbt module for 600vdc?
For 600vdc there are plenty cheap rectifiers..
400vac is 564vdc rectified.

Here you can see some from ST: www.st.com/en/power-modules-and-ipm/stpo...lligent-modules.html. The v5 is the middle category in terms of servo motor power.
Look in the HP category.
To which rectifiers are you referring? Ready to use boards or simple diode module? I know there are several architectures for rectifiers.

for higher power 600V, something like
Onsemi NFVA25012NP2T might make sense
 

Freak wrote:

Who knows if is possible to use these boards in a industry plant? Is possible to certify a machine using these boards? (CE for example here in Europe)
 

Most likely no, usually components that can also be used individually, need to be certified, especially electrical ones. So to certify a machine with drives an motors, they should also bear their own CE.
To certify the drives, you have pretty much 2 options.

1. You do it on your own.
This is quite a big task, the only "difficult" one will be the EMC stuff, you need a radio room, you can find example in some universities etc. and then you need to fix your mistakes. Don't worry there will be mistakes and shit to take care of.
The other stuff is more documentation stuff like, manuals (EU is a bitch as technically the CE requires manuals to be in the target country's language, so in most cases english is not enough), risk assessments etc. This takes a lot of time and a lot of effort.

2. You give the task to a company like Intertek, TUV...
I have always gone this route, expensive but then you get all CE, UL, CSA done at the same time and you are somewhat covered as someone else signs your work. Even in this case the EMC is always done before in another place. Some schools example rent those radio rooms out 10x cheaper what the time at intertek costs. So you try to do everything that you pass all the radiated and conducted emissions at the final test site. This will save you thousands.

3. Mix of the 2, you do it on your own and get someone to consult and help.
Probably cheaper than example the intertek route but a lot of work.

Some of the directives related to servos would be:
Machinery Directive
2006/42/EC
EMC Directive
2014/30/EU
Low Voltage Directive
2014/35/EU
Then most likely ROHS and REACH (but I think its hard to buy components now days that dont comply to both).

Then to find the subsections from those, I would ask someone that actually knows about this. Or see from any "major" brand like yaskawa, panasonic, mitsubishi, siemens... and just go with what they certify with (they will all have them on the manuals).
 

high voltage + high power , use discerct igbt or IGBT moudle

 

Thank you for sharing your insights, RDA. I've read about the certification process but have never actually gone through it myself. It doesn't make sense to certify a driver for just one machine, but in the future, if a design proves successful and gains popularity, certification could potentially be beneficial.

Regarding the candidate power modules, designing a driver for a discrete IGBT can be a challenging task. In the past, I've encountered issues with parasitic capacitance from a similar module attached above, which led to the destruction of a Siemens servo driver that I was working on. The integrated solution provided by these power modules really simplifies the design process in my opinion. However, it's worth noting that including rectification diodes in an integrated solution may be redundant for a modular array used in robot control, as the drivers in such an arrangement typically only contain the inverter stage and not the rectification stage.

The Onsemi NFVA25012NP2T is a good option to consider for designing a prototype.

this drive supports fanuc pulsecoders
siemens resolvers and biss-ssi encoders?

Yess, only the fanuc is a bit tricky to connect because the pinout on the drive, but should work. All the others will work without issues. You can find more info here: freakontrol.github.io/stmbl/docs/pinouts .
Keep in mind the documentation there is still temporary and I planned to reorganize and enrich it.

Do you sell pcbs with components(at least smd) mounted ?
Are you in Europe ?