With all the new safety-rated switches, PLCs, and other devices, is safe torque off (STO) something you could really use? Is it worth the investment? Right off, I’ll say, given the minimal cost involved with drive safe torque off, the investment is a no-brainer even if you don’t use it at first.

Cables connect VFDs to motors, playing a critical role in the safe, efficient operation of the system. In the past, manufacturers used their own judgment to classify their products as VFD cables. This all changed in 2018 when NFPA updated NFPA 79: Electrical Standard for Industrial Machinery.

We’ve been blogging for nearly three years, and we’re thrilled to see how our audience and readership has grown. Readers are especially interested in our How-tos, DIYs, and FAQs. That’s why we’ve compiled our top five how-to blog posts based on the number of page visits (so you don’t have to).