Why should you use DC Motors & Drives in Conveyors?

Most conveyors—such as those used in printing presses, plastic extrusion machines, and fabric processing—start at slow speed (or idle) when the machine first powers up. This is because operators typically need time to make small adjustments before the system can run at full production speed.

However, when using AC drives to run these conveyors at low speeds (typically below 18 Hz, about one-third of the motor's full range), the drives often become overloaded. This can result in drive trips or even breaker trips. It's a common issue because AC drives tend to draw significantly more current at low speeds—more than the motor can safely handle—leading to potential overheating or damage to both the drive and motor. Additionally, torque output at low speed is very poor.

This issue is especially prevalent in industries like printing, plastics, extrusion, and textiles, and it can cause frequent disruptions to production.

DC motor drives offer a practical solution. They provide full torque from as low as 1 RPM all the way to full speed, are generally more affordable, and are easier to work with. While it's true that DC motors require periodic brush maintenance—typically every 1–2 years—they are very reliable when maintained properly. Like AC motors, they also require standard upkeep such as bearing checks and lubrication.

Besides you'll save energy and have better performance.

 Visit us at: www.aucontrols.com and start saving energy.