SEW-EURODIVE: Maximizing Gearmotor Speed Range

November 2, 2018

Maximizing Gearmotor Speed Range is SEW-EURODRIVE’S technical white paper that shows how to operate VFDs above 60Hz to widen gearmotor speed range, improve system stability, and reduce cost. In fact, operating VFDs as high as 120Hz may significantly enhance gearmotor performance.

Many engineers assume that the inverter and gearmotor must operate within the 60Hz threshold. Some think that going to a high speed above 60Hz may cause the motor to overheat. But in reality, stopping at 60Hz may actually cause the motor to overheat at a low speed.

With a carefully designed drive system and correct ratio, pushing the operating frequency above 60Hz is possible using one of two proven control methods – field weakening or supercharging. Both methods are discussed in detail, along with technical charts and formulas. Through a common conveying example, the paper demonstrates how to properly select a gearmotor that will significantly enhance performance in the following ways:

• Increase stability by reducing inertia mismatch

• Widen the available speed range

• Eliminate a costly ventilator fan at low speed

• Eliminate motor overheating at low speed

• Enable the use of a smaller motor

Visit to download the PDF.

Related Articles

Editor’s Pick: Featured Article

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s scalable engineering software, u-control 2000, adapts individually to your requirements. And, the u-control is powerful, compact and fully compatible with Weidmüller’s I/O system u-remote. This article looks at what makes u-control the heart of your automation.

Programmable logic controllers (PLCs) are one of the main components of any automated system. A typical control system has inputs, outputs, controllers (i.e., PLCs), and some type of human interaction with the system, a human machine interface (HMI), for example.

Read More

Latest Articles

  • ABB’s Care and Modernization Services Breathe Second Life into Legacy Equipment

    April 3, 2024 The most comprehensive and sustainable options for extending product life In today’s world with environmental concerns top of mind, ABB offers sustainable options to extend equipment life through refurbishment and repair—which support a circular economy and reduce landfill footprints. In this context, ABB Canada’s Brampton facility is recognized for offering customized solutions… Read More…

  • A Guide to Industrial Ethernet (IE)

    April 2, 2024 Ethernet has become the backbone of industrial communication, enabling devices and systems to exchange data rapidly and reliably. This guide delves into Ethernet’s implementation in industrial settings, highlighting its advantages, protocols, frame structure, and data types to provide a solid foundation for professionals looking to leverage this technology. Understanding Industrial Ethernet At… Read More…