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User-friendly variable-frequency drives for intralogistics systems In general, conveyor technology and intralogistics require drive control systems which can be simply installed and are easily accessible during operation and maintenance. Field distribution systems from Nord Drivesystems provide exactly this as well as significantly reduced system costs. About Nord Drivesystems A developer and manufacturer of drive technology for over 50 years, Nord Drivesystems employs more than 3,300 people and is one of the world’s leading suppliers of drive solutions. In 2016, the company’s gross sales amounted to EUR 560 million. With subsidiaries and distributors in 89 countries around the world, Nord has an extensive service network. Nord’s wide variety of gears covers torques from 10 Nm to 250 kNm and more. The company also supplies motors with outputs from 0.12 kW to 1,000 kW and manufactures frequency inverters up to 160 kW. Nord’s inverter line-up features conventional models for installation in control cabinets as well as fully integrated drive units and the all-new field distribution systems for decentralized automation environment. The company Nord Drivesystems has developed a new line-up of user-friendly, low-maintenance electronic drives for intralogistics systems. These new frequency inverter and motor starter models for distributed installations are especially easy to deploy and operate. Coded plug-in connectors ensure comfortable handling throughout a system’s lifetime, from the initial installation, to maintenance, to eventual replacement. Branded as the Nordac Link series, these devices provide very flexible feature customization options that can be configured to individual requirements: interface ports, manual switches, and a range of functions that even include closed-loop control and sequential control managed by an integrated PLC. Distributed drives must execute commands from a higherlevel central control system with absolute reliability. In many scenarios, however, operating staff and service technicians may also require optional direct access to individual drives or drive axes on location. Such access enables them to quickly resolve small problems like a jammed conveyor belt that might otherwise lead to a shut-down of the entire line, sometimes putting hundreds of conveyor modules out of work for a considerable amount of time. Nord Drivesystems has therefore developed the new ‘Nordac Link’, an electronics drive for particularly convenient and time-saving operation and maintenance. Key features of the new drives are coded plug-in connectors for all power and communication lines, as well as for various sensors, actuators, and encoders. These greatly facilitate accurate, quick, and safe connections. LEDs on the field distribution systems enable error diagnostics on the production floor, and operators can DRIVE TECHNOLOGY Featuring plug connectors and flexible switch and interface configurations, the new, compact Nord field distribution systems make installing, operating, and servicing conveyor installations easier than ever WORLD OF INDUSTRIESMOTION, DRIVE & AUTOMATION 2/2017

Basic data for Nordac Link n Protection class: IP 55, IP 65 01 Nord configures complete drive systems, combining field distribution systems with high-efficiency geared motors n Power range: 0.55 – 7.5 kW n Voltages: 1/3~200-240 V, 3~380-500 V Functions n High precision with current vector control n PLC for motor-related functions (PLC on Board) n Energy-saving function for partial load operation n Control and parameterization tools and simple parameter structure n Integrated line filter for compliance with EMC regulations n Operation with synchronous and asynchronous motors n Control and closed loop regulation n ‘Posicon’ – Integrated positioning mode and synchronization n STO and SS1 – Integrated functional safety n Integrated brake rectifier for motor brake control n Load monitor n Hoist and lifting gear functionality n Master / Slave operation remedy problems then and there using the maintenance and control switches on the drives. The compact units are designed for wall or frame mounting. Featuring a busbar for the mains supply, they can be daisy-chained with short cabling from one drive to the next, which saves time and expenses. The field distribution systems are able to control asynchronous or synchronous motors. They come with comprehensive certifications for operation everywhere in the world. The drives support Profibus, CANopen, DeviceNet, and AS-i communication, as well as the Industrial Ethernet protocols ProfiNet, Ethernet Powerlink, EtherCAT, and EtherNet/IP. Expert solutions for conveyor applications Distributed conveyor drives have been a focus for drive technology developments at Nord for many years, resulting in a versatile portfolio of distributed drive electronics that cover a considerably wider range of functions than competing products. In 2009, the company first introduced motor-integrated frequency inverters featuring rotary encoder feedback, position control, hoist functions, and Safe Stop. 2015 saw the addition of a PLC in motor-integrated drive units. Now, years of experience in various sectors and close cooperation with customers have led to the new line of field distribution systems. These intelligent drives with a proven user-friendly user interface can be flexibly configured for a wide range of conveying tasks. An integrated PLC and PI controller functions even enable the establishment of autonomous modular systems. Frequency inverters and motor starters in the 0.55 to 3 kW performance range are immediately available. Now in 2017, inverters for motors up to 7.5 kW rated output will also be added to the line. Reliable drives with a high overload capacity Nordac Link series motor starters control soft starts and stops, as well as reversing operation in fixed speed applications. Just like inverter-type field distribution systems, these wear-free electronic switches integrate extensive monitoring and protection functions – this saves the cost for typical control cabinet components such as motor circuit breakers and reversing contactors. In more demanding drive applications, frequency inverters ensure efficient and precise speed control and wear-free brake actuation. Employing field-oriented vector control, they deliver the required speeds reliably even under great load fluctuations and provide full torque even at standstill. These AC vector drives have a high overload capacity of 150 % for one minute and up to 200 % for brief periods. An integrated load monitor prevents damage to the equipment in case of blocked applications. The inverters also support direct connection of incremental and absolute encoders. Multiple drives in master/slave operation can synchronize speed or positions. Additional optional features include the STO (Safe Torque Off) and SS1 (Safe Stop 1) safety functions according to EN 61800-5-2. Photographs: Getriebebau Nord GmbH & Co.KG 02 The Nordac Link line comprises soft and reversing starters (a) and two frequency inverter sizes for motors from 0.55 to 7.5 kW (b + c) a b c WORLD OF INDUSTRIESMOTION, DRIVE & AUTOMATION 2/2017


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