Hi everyone I have three questions

1. I have Yaskawa varispeed 626-MT2 When I turn on the machine Its OS red Light turns on any body with any experience with that and
how to fix it
2. The motor plate picture is attached it is yaskawa 4 pole motor and i also have 220volt cuttler hammer SVX9000 inverter and I replace
it with the original ( SVX9000 spec says on output voltage 0 to input)
3. If I use an open loop VDF and install at tacho on the motor and make and negitive feed back opamp circuit with one feed back from
tacho and other is my analogue command will it work ( will it work as a close loop). have any one tried it

I am attaching a picture of motor plate if anyone can explain what it say. Picture of yaskawa spindle drive and SVX9000 inverters quick manual
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