Inverter range is suitable for lift upgrade and modernisation
29 July 2011
Nord Drivesystems' SK500E series frequency inverters feature a selection of modular options and enhancements that can accommodate applications from simple speed control through to complex servo positioning. The SK530E version includes the built in POSICON position controller as well as specific parameters for lift and elevator control and is suitable for lift upgrade and modernisation use.
With high quality sensorless current vector control (ISD), and now available in seven modular sizes up to 37kW motor power, the SK530E also includes integrated motor brake management with a brake chopper for true S1 continuous duty and a range of matched braking resistors available for safe heavy load braking. Further features that suit lift industry applications include a high starting overload capacity of 200% for 3.5 seconds, an integrated EMC filter that suits residential use, 16kHz switching frequency for silent motor operation, and a control card that can be supplied from an external 24 V source to aid special functionality such as emergency elevator evacuation.
Throughout the SK500E range, these cabinet-mounted frequency inverters boast an automatic flux optimisation feature that can save up to 30% energy - and with the newly available Nord IE2 compliant motors, total energy efficiency is at unprecedented levels for lift applications. Further common range benefits include an integrated oscilloscope for optimised drive set-up which is also made straightforward with a fully automatic motor identification feature that detects all motor parameters at standstill. The various options also include a complement of digital and analogue I/O for machine interfacing as well as a wide choice of expansion modules for fieldbus interfacing.
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