Recent content by Crankshaft1983

Quite a couple of things to look at. Thanks again Sir, you've been very helpful.

Yes Sir, thanks much for all the help. Hopefully I can successfully get the data routed to my computer. Well this is the main reason I'm hassling with this machine. Spindle current for the Z1 axis goes into over-current mode when it reaches 12.1 amps or more causing it to burn wafers...

Yea they are originally PDF files but I uploaded them to dropbox and shared the link on here because I couldn't upload them directly on here (Physics forum). If you click on it, it should download to your computer.

Yea the VFD (Inverter tech manual attached) has a display as well as the tool the inverter is installed on outputs current and RPM readings on an inbuilt display. So I was wondering if there is a way to pick those analog or digital signals from the inverter or the machine (machine technical...

Please ignore the last last post. Auto correct got me there. Answer to your question is Yes, there's an external PLC on the machine on which the inverter is installed. Is it possible to pick off output frequency & current signals from the PLC via a DAQ to a computer for RPM computations like...

Unfortunately it doesn't have a front panel but there's a PLC display on the machine.

This makes lots of sense, thank you. Yes its an induction motor. So frequency is the only variable here. How do I obtain the variable frequency? Do you think I can obtain that from the inverter which powers the motor?

So in otherwords the synchronous speed = RPM (after calibration) ? Or is there an equation that relates both entities? Is there a relation to power and rpm?

I have added a dropbox link for the inverter tech docs Sir. Please check out the pages I mentioned in my first post for reference to help suggest a suitable sensor to monitor current based on the demands of the motor.

Thank you guys for all the quick response. MrSparkle and anyone who couldn't open the attachment pls try the link below. Doesn't seem like the PDF uploaded correctly on here. https://www.dropbox.com/s/dit6ven1mz44suu/CP_Mitsubishi%20FR-A500E%20Inverter.pdf Any suggestions on a suitable sensor...

I would like some assistance to select the right sensor/transducer to monitor current from an inverter to the spindle motor it feeds. If it is possible to get RPM signals from the inverter please advice on how to go about it. Please suggest the most suitable sensor/s to achieve both current and...