Nord has developed the flexible Nordac DA decentral drive concept which serves to relocate electronic control technology from control cabinets directly to the drive. Nordac SK 1XXE motor switches, for instance, are directly integrated into the motor’s terminal box and carry out simple actuation tasks. The SK 140E activates the motor for one running direction, the soft starter SK150E additionally controls startup and spinout behavior, while the SK 160E reverse motor switch enables wear-free activation for both running directions. All motor switches are IP 55 protected and can be fitted with an integrated brake rectifier. By default, they also feature a thermistor control for full thermal motor protection. Nordac SK 750E frequency inverters are suitable for high power requirements and rugged environments. Air-cooled, IP 54 protected units and water-cooled IP 65 models are available. The inverters are specified for power outputs from 5.5 to 22 kW and feature sensorless current vector control (ISD), a brake chopper and a line filter. External plug-in technology boxes allow for easy extension and adaptation to various tasks. Additionally, modules for I/O and field bus connection enable easy operation, configuration and control. Seamless integration into existing automation environments is ensured by Profibus, CAN-open, Interbus, ASi and DeviceNet interface modules.
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