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Showing posts from December, 2014

Lenze Introduces Simple and Versatile Smart Motor for Optimal Standardization

Leading global manufacturer of electrical and mechanical drives, motion control and automation technology, Lenze Americas recently introduced its innovative Smart Motor designed for applications ranging from material handling to packaging automation. Blending the simplicity of a conventional AC motor with electronic drive control technology, Lenze’s versatile Smart Motor was showcased at PACK EXPO in September. Offering a highly versatile and powerful package, the Smart Motor delivers maximum standardization-drastically reducing (by up to 70 percent) the number of different motor variations customers might otherwise need. Equipped with control intelligence in the terminal box, the Smart Motor provides design flexibility for speeds from 500 to 2,600 rpm, while maintaining constant torque. The easy-to-install motor enables mains and starter applications to be handled with greater ease than with conventional motors. The Smart Motor complies with IES2 the top efficiency class for dri...

Lenze g500 Gearbox Transforms Smart Motor Speed Into Torque

Leading global manufacturer of electrical and mechanical drives, motion control and automation technology, Lenze Americas has introduced its new g500 gearbox range, developed to transform motor speed into torque as intelligently and accurately as possible. Designed for mechatronic integration with the Lenze Smart Motor, the finely tiered series of g500 gearboxes enable efficiency of over 94 percent across the entire transmission range. The new g500 gearboxes minimize losses, so the motor can generate less energy, which improves the bottom-line efficiency of the entire system. The lower level of generated heat increases the overall service life. The g500 gearboxes are designed for total integration with the Lenze Smart Motor. A single, efficient motor for many applications, the Smart Motor offers numerous integrated functions for material handling applications, including higher starting torque and freely adjustable speeds between 500 and 2,600 RPM, which reduces the required number ...

Motors Running into Service Factor (SF)

All NEMA frame low voltage motors are typically designed with a 1.15 Service Factor (SF). It is common on some higher horsepower, or application-specific motors to be 1.0 SF based on special design, enclosure size etc. There are two aspects to SF: The first is motor temperature. Temperature rise is described thoroughly in last month’s issue. The relationship between motor heating and current is a square function, and motor current draw is generally proportional to load. Heating is a function of current2 x resistance x time. This is usually referred to as current2 x time, or I2t. At SF loading, if current is 1.15 x rated, the heating effect will be 1.152 = 1.32 x normal. This roughly means that if the temperature rise at full load is 80°C (‘B’ rise) the temperature rise at 1.15 SF loading will be in the order of (1.15)2 x 80°C = 105.8°C (‘F’ rise). This is why most manufacturers design a motor to have a B rise or less at full load for a 1.15 SF motor. [ASIDE: This clearly shows ho...

Lenze Adds New g700 Planetary Gearbox Series for Use with Synchronous and Asynchronous Servo Motors

Leading global manufacturer of electrical and mechanical drives, motion control and automation technology, Lenze Americas has unveiled its g700 series of purebred planetary gearboxes designed for servo applications with demanding requirements relative to overload capacity and dynamics. The new gearbox series extends the company’s range of solutions for servo motor applications. The g700 can be used in conjunction with Lenze’s synchronous and asynchronous servo motors, as well as a single gearbox with a servo motor. Designed specifically for servo application, the one-, two- and three-stage planetary gearboxes are available in five sizes and cover torques ranging from 177 in-lbs to 7080 in-lbs. The special handling of the toothing edge, which includes grinding and honing, and the precise, balanced clamping system for the motor, help to minimize the noise generation. As a result, a noise of ≤58 dB(A) is achievable which corresponds to a quiet conversation. The g700 is a gearbox w...