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Corona? Great last name! Red should denote danger or a fault condition. I can understand red as a running indicator in that it implies a possible dangerous condition but times have changed. In newer machinery, there should already be adequate guarding/protection to meet OSHA and EU specs. In...

Don't forget the IEC EN60204 electrical code. The NFPA has been morphing in this direction in the latest two issues in order to have agreeable international specs. Thankfully, they match very closely. The only thing to think about is our Amber versus their Yellow and their prevelance of Clear...

Thanks, didn't think of that.

Looking for an F/V hopefully in DIN rail mounted or modular form for industrial controls use. Was using a Dymec module on my own fabricated board which had .01% accuracy and built in variable filtering at 10KHz=10VDC (JUST DANDY!). They no longer make this. I really would rather not have to...

Looking for an F/V hopefully in DIN rail mounted or modular form for industrial controls use. Was using a Dymec module on my own fabricated board which had .01% accuracy and built in variable filtering at 10KHz=10VDC (JUST DANDY!). They no longer make this. I really would rather not have to...

Of Course! That makes sense, thanks.

I understand a 3 phase squirrel cage motor RPM is 120*(Frequency/Poles). 120 is derived from what? How do you determine single phase motor RPM?