Posted to News on 16th Apr 2010, 22:31
Compact inverters with interfacing options and expansion modules
Nord SK 500E series compact inverters are available in six modular sizes with performance ratings to 22kW and a wide selection of interfacing options and expansion modules for industrial automation applications ranging from simple speed control to complex servo positioning. For greater versatility, these options and modules can be applied throughout the SK 500E range and within each power rating the cabinet's external dimensions are unaffected - thereby ensuring that retrofitting, system scalability and functional upgrades may be carried out with minimum inconvenience and maximum efficiency.
All models provide sensorless current vector control and feature brake management, a brake chopper and Class A line filtering, as well as a PID controller for process control, configurable parameter sets, and automatic flux optimisation that can reduce energy consumption by up to 30 per cent. Even the basic model, which is equipped with five digital inputs, two analogue inputs, one analogue output and two relay outputs, provides a wide range of connection options.
Advanced models can include extra features such as Safe Stop in compliance with EN 954-1 and EN 13849-1 (up to safety category 4, stop category 0 and 1), an on-board CANopen interface, a TTL incremental encoder input, additional digital input and output channels, or the POSICON positioning control. Expansion modules called Technology Units include Profibus, CANopen, DeviceNet, and Interbus modules for direct fieldbus control, as well as an AS-interface with provision for two sensors and four actuators.
Furthermore, models are available with a separate 24V power supply for the control card, providing access to parameter data and the bus interface, even if the mains power is switched off. This enables the inverters to be used for applications such as elevator evacuation and increases online availability. Many SK 500E models are optionally available as cold plate versions or with heat sinks for installation outside the control cabinet (through-hole installation).
Follow the link for more information about the SK 500E series inverters.
