How to Wire a Safe Torque Off STO Drive Input to a Safety Relay

Our Powerflex 525 drive has a Safe Torque Off STO input. You can wire it to a standard safety relay.
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[@ireneoyu1926]

Thank you Tim GOD bless

[@TimWilborne]

You are very welcome

[@carypeltier8247]

Problem I see is when e-stop is pressed it coasts to a stop rather then braking. I had to run wire from e-stop to a relay as part of 3 wire setup. It doesn’t turn off VFD but does spindle.

[@darrelljourdan9926]

Great information.

[@TimWilborne]

Thanks. Safety is an area that I need to get a more in depth knowledge of. Especially when it comes to how to do a proper risk assessment.

[@goktuggurler8966]

Hello, how should the safety system design be with STO input drivers in the AGV system? How should STO be used in safety laser and emergency stop processes.
Thank you.

[@ravdeepsandhu24]

Hi there, what parameter settings did you have to change for auto reset on the drive after you reset the estop? Normally you have push the stop/reset button to reset the fault code.

[@TimWilborne]

Think it is T105.

[@ravdeepsandhu24]

@@TimWilborne Thank you. This does actually disables the Safety interlock. I hope to see an auto reset from Allen Bradley. I still need to know if someone hits the e-stop accidentally.

[@TimWilborne]

It is somewhere in the T parameters. I know several of our trainers are set up the way you want.