JDN Monocrane’s new range of single and double-girder cranes uses SEW-Eurodrive’s intelligent drive inverter technology and geared motors.
The cranes are designed to increase the speed of operation when loaded below full capacity. The units are also said to offer a slower creep speed than usual for easier positioning.
The company claims the intelligent drive inverter technology and geared motors have allowed the development of the cranes’ Hyperspeed function and i-GLIDE.
Three intelligent drive inverters are used to perform advanced long and cross travel plus hoist-lifting and lowering operations. These drive inverters are key components in Hyperspeed technology.
While most cranes offer only two hoist speeds and are restricted to lifting light loads at the maximum loaded speed, the cranes are said to be able to operate over-speed when lifting and lowering below the full safe working load. With Hyperspeed activated, the top speed is said to be twice the industry standard at light loads.
The company claims three speeds are offered in traverse and travel with the i-GLIDE function. This uses the programmable inverter drives to actively control acceleration and deceleration, which is said to minimise hook sway by achieving smooth dynamic properties.