New RD1A: intelligent and high-performance positioning unit

New RD1A: intelligent and high-performance positioning unit von Lika Electronic

Von: Lika Electronic  31.01.2012
Keywords: Automatisierung, Electronic, Positionierung

New RD1A positioning unit extends Lika's portfolio of DRIVECOD series setting new standards and offering many valuable features. This versatile and compact positioning unit (only 59 x 125 x 112 mm, 14 mm hollow shaft) encompasses a 31 W BLDC brushless motor fitted with planetary gears (T48, T24 and T12 gear ratios available) and capable of providing a nominal torque of up to 5 Nm and a starting torque of up to 12 Nm. The integrated real 20-bit multiturn encoder with a position accuracy of up to ±0,9° is installed in the output axis and therefore is not affected by the backlash errors of the gears. The controller, fully developed by Lika Electronic, integrates many state-of-the-art operational functions. To give just a mere cross-section, control operation is achieved through two cascade control loop cycles, the position loop cycle performed at every 1 ms and the current loop cycle performed at every 200 μs. The internal trajectory generator (boasting a 64-bit double precision) allows the operator to set a new target position value even whilst the unit is still reaching the previously set one. Finally the following internal control functions are implemented: overtemperature, overcurrent, undervoltage and bus communication failure (because of a broken or disconnected cable or a faulty wiring). RD1A positioning unit can be easily integrated into fieldbus networks thanks to the range of fieldbus protocols implemented: Profibus-DP, CANopen DS301 and Modbus RTU. In addition, Profibus and CANopen models are equipped with a Modbus RS-232 service serial port. RD1A positioning unit further boasts a large number of key features offered at no charge. Among the others: separate power supply for motor and controller; Preset and Jog buttons to manually move and calibrate the unit; LEDs meant to show visually the operating or fault status of the interface and the device; DIP switches to set the node ID, the baud rate and the termination resistance; boot-loader feature to upgrade the DRIVECOD unit firmware; software tool to configure and test manually the unit via Modbus. New RD1A can be easily fitted into equipment with constrained and tight mounting space and even for modernizing existing systems as the mounting assembly is exactly the same used for digital position indicators and handwheels widely installed in manual adjustable shafts. It can be used in a wide range of applications in any industrial sector and is suitable to drive positioning and auxiliary axes such as in mold changers, mobile stops, tools changers, filling machines, suction cups motion units, spindle positioning devices, conveyors and packaging & woodworking machineries, among others. At any rate a single command can provide multiple precise adjustments in just one cycle and very short time.

Keywords: Achssteuerungen, Automatisierung, Drehgeber, Electronic, Encoder, Encoder Absolute, Integrierte Stellantriebe, Intelligente Motoren, Motion Control, Multiturngeber, Positionierung, Spindelpositionierung,

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