In Part 1 of this two-part series, we presented a 3-phase, 480VAC motor circuit with its associated controls (Figure). We stepped through a logical, systematic approach to troubleshoot the main power ...

Motors make the HVAC world go ‘round — or, at the very least, in the HVAC business, they make the air go ‘round. And while some motors last for many years without any issues, others stop working ...

As we mentioned at the end of last month's motor quiz, we are focusing on HVACR motor troubleshooting specifics. This month we will discuss troubleshooting if the motor isn't rotating; next month we ...

A motor protection relay safeguards electric motors by detecting thermal stress, phase imbalance, stall, and abnormal ...

Microprocessor control lets variable-speed PMSMs save energy. Sophisticated motor control is no longer the sole province of custom hardware and proprietary control techniques. Advances in powerful, ...

Electric bikes (e-bikes) offer a fantastic alternative for eco-friendly commuting and recreation. However, they can encounter issues over time, like any piece of machinery. This troubleshooting guide ...

How the challenges of electric-motor control design can be overcome using digital twins in all design and test phases. How automated testing within a continuous and integrated toolchain is able to ...

When you get the call, “The motor won’t start,” you’d best have a logical and systematic plan in place to approach the problem. “Easter egging” just doesn’t work unless you happen to be very lucky!