CNC Crossroad
Posted: Thu Aug 11, 2022 8:09 am
Hello,
I’m at a crossroad in my CNC project and I’m looking for some advice going forward. I have retrofitted my Eumach MC800P with an Oak controller and the add1616 card still using the Siemens Simodrive 611 analog VFD and servo drive and the Siemens 1.8kw (11 Nm) servos that I have fitted the Centroid 10000 line encoder to. The system has been working good, but now the Simodrive Power supply is not working. The repair on the power supply is about 1300 euro.
The question now is, fix it and stick to the Simodrive or retrofit new VFD and servo drives?
If I stick to the Simodrive, spend the money to fix the power supply, what is next to fail? The Simodrive is from 1995/1996 and replacement components is crazy expensive.
If I retrofit the servo drives and the spindle VFD I don’t want to replace the servos since I have put the 10000 line encoder on there and think that the servos are just fine. (Siemens: 1ft5072-0ac71-1-z)
What servo drives can I use that work with the centroid oak? (3ph 400v)
What spindle VFD is recommended? (3ph 400v 7.5-10.5kw) (Siemens: 1ph6137-4nb49-z)
The positive is if I retrofit the drives I can go from velocity drive (+10v -10v analog) control to a precision setup that is more accurate. That have to be a good thing?
I don’t want to spend a fortune on this upgrade, I know it will be cheaper to repair the power supply now, but maybe not if and when the next thing fail on the Simodrive. Maybe the simodrive are rock solid and doesn't fail? I don't know. I don’t want to upgrade to the cheapest China drives either, I feel the machine deserves a little more than that.
I’m capable of doing all the wiring and setup myself and I don’t have a crazy deadline for this project since it’s a hobby project for now. I may need some plc programing from marc to get the plc program right for the new configuration.
If I have to replace the servos (worst case), then I can use stuff that is 3ph 230v. if a drive and servo combo package are much better for a little more money or cheaper since it’s 230v and just as good?
Any advice? I’ll be grateful for your input.
Regards,
Jim-Hugo
Norway
I’m at a crossroad in my CNC project and I’m looking for some advice going forward. I have retrofitted my Eumach MC800P with an Oak controller and the add1616 card still using the Siemens Simodrive 611 analog VFD and servo drive and the Siemens 1.8kw (11 Nm) servos that I have fitted the Centroid 10000 line encoder to. The system has been working good, but now the Simodrive Power supply is not working. The repair on the power supply is about 1300 euro.
The question now is, fix it and stick to the Simodrive or retrofit new VFD and servo drives?
If I stick to the Simodrive, spend the money to fix the power supply, what is next to fail? The Simodrive is from 1995/1996 and replacement components is crazy expensive.
If I retrofit the servo drives and the spindle VFD I don’t want to replace the servos since I have put the 10000 line encoder on there and think that the servos are just fine. (Siemens: 1ft5072-0ac71-1-z)
What servo drives can I use that work with the centroid oak? (3ph 400v)
What spindle VFD is recommended? (3ph 400v 7.5-10.5kw) (Siemens: 1ph6137-4nb49-z)
The positive is if I retrofit the drives I can go from velocity drive (+10v -10v analog) control to a precision setup that is more accurate. That have to be a good thing?
I don’t want to spend a fortune on this upgrade, I know it will be cheaper to repair the power supply now, but maybe not if and when the next thing fail on the Simodrive. Maybe the simodrive are rock solid and doesn't fail? I don't know. I don’t want to upgrade to the cheapest China drives either, I feel the machine deserves a little more than that.
I’m capable of doing all the wiring and setup myself and I don’t have a crazy deadline for this project since it’s a hobby project for now. I may need some plc programing from marc to get the plc program right for the new configuration.
If I have to replace the servos (worst case), then I can use stuff that is 3ph 230v. if a drive and servo combo package are much better for a little more money or cheaper since it’s 230v and just as good?
Any advice? I’ll be grateful for your input.
Regards,
Jim-Hugo
Norway