Variable frequency drives, also known as adjustable speed drives or inverters, help regulate motor acceleration by providing initial low frequency and voltage currents that increase at a slower, controlled rate. When used on bridge, trolley or hoist applications, the VFDs offer smooth, ramped acceleration and deceleration. This enables motors to run cooler, allows for greater equipment control, increases load spotting benefits, and ensures a soft starting and stopping of the equipment.
Lodestar electric chain hoists offer power, flexibility and a number of important safety features. All capacities are available in either single speed or two speed models. Heavy duty motors are rated at thirty minutes. Workings are completely enclosed and compact for low headroom. Safety features include Lodestar Protector®, a friction clutch assembly designed to stop the hoist when overloading occurs. A dual braking system -- heavy duty magnetic an regenerative, plus upper and lower limit switches are additional Lodestar safety features. Snap action control station, Rated NEMA 4, carries only 115 volts and is completely lubricated at the factory. Famous CM Hoistaloy® load chain comes with standard rigid hook.