WEG Safe Torque Off Part 2 from AutomationDirect

www.AutomationDirect.com/drives - (VID-DR-0305)
- Safe Torque Off (STO) is the quickest and safest way to remove power from a motor. And the WEG CFW500 drive has both standard STO and SS1-t where you can control the decel ramp. Part 1 uses a simple ESTOP button wired directly to the drive's STO module. Part 2 uses a safety relay to built a fully compliant safety system. Learn all about it in this brief hands-on tutorial. This drive can produce full rated torque down to zero RPM and is available in NEMA4x/IP66 enclosures for OUTDOOR use in direct sunlight! It's available in up to 60 hp and has all the high end features you would expect like Dynamic Braking, PID, built-in PLC, Safe Torque Off (STO/SSI), two remote keypad options, Modbus TCP, EtherNet/IP, 65kVA SCCR, FOC or Torque Mode, Sensorless Vector, etc.
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**Prices were valid at the time the video was released and are subject to change.
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[@Isaac-qd6gy]

Excellent and very informative video! Much more helpful than the info in the manuals.

[@automationdirect]

Thank you for the comment. If you ever need assistance on our products, we offer free, award-winning technical support. You can find their information here: support.automationdirect.com/

[@fabianomoreiraamaro9920]

Excellent video! Very informative!

[@automationdirect]

Glad it was helpful!

[@brianwolf2902]

This is very helpful, the STO manual states "the frequency inverter must be de-energized and re-energized" if the STO is activated but clearly that's not true. Big difference! I'm confused too that the drive power supply is sufficient for the safety relay, the drive supplies 150 mA and the relay has 1.5W max consumption? It would be great to omit a transformer and power supply, but 150 mA isn't much

[@automationdirect]

@brian, glad you like the video! We show that in this video because 1.5W is 60mA @24VDC so well within the tolerance range of the power supply. Having said that, the power supply on the drive isn't replaceable, so if you did have a short it would potentially lead to the drive being replaced. In most applications it would probably be best to use an external power supply as you mentioned.