Smooth Surfaces for Easy Cleaning
The requirements for hygiene and cleanliness in the food industry are extremely high. The requirements for the drive technology are correspondingly strict. For Swiss Can Machinery, hygienic design of its plant is absolutely essential. Because of this, the conveyor belts are equipped with NORD IE4 geared motors with smooth surfaces, including motor-mounted
NORDAC® BASE SK 180E frequency inverters
to reliably transport the cans. NORD smooth motors (1 hp) are specially designed for easy cleaning. They have a washdown-optimized aluminium housing and wherever possible, they have flowing transitions between surfaces. Thus, cleaning liquids and foam can wash off easily. This protects the motors and shortens cleaning times. They are also fanless, so they do not contribute to the spreading of germs. Thanks to protection class IP66, they are optimally protected against the entry of dirt (dust-proof) as well as for strong water jets from all directions. Use of energy-saving three-phase motors with efficiency class IE4 also enables high efficiency with low operating costs.
"The conveyor belt is used in the high hygiene room. This is why the washdown design of the drives is so important", explains Marcel Tobler, Automation Manager at Swiss Can Machinery. "Another advantage is communication via Profinet. Here, the motors are connected in series. This also reduces the amount of cables. Due to the modular construction of the conveyor belts, we can use the same motor everywhere, which makes purchasing much easier." The required continuous speed control of the conveyor belts is provided by the NORDAC BASE. The decentralized frequency inverter offers reliable technology with a robust design. Installation directly on the motor increases flexibility and simplifies maintenance and repair processes for users.
NORD smooth motors are also used on the screw conveyor, which feeds powdered milk into the mixer. A robust worm geared motor (0.3 hp) with cover drives the agitator. The compact drive units provide a high power density, excellent reliability and ensure trouble-free operation.