Siemens: Control Unit for Variable Speed Drives

The Sinamics CU250S-2 control unit works with the Sinamics G120 variable speed drives.

Aw 19530 1311np Siemens

The unit provides vector control with encoder feedback; it supports single-axis applications with exact speed and torque control on induction motors, as well as positioning tasks with high demand on I/O, with different encoder interfaces provided on the module. The units can be combined with existing power modules to support all G120 drive applications, with or without encoder evaluation, for demanding applications requiring speed feedback. Additionally, STO (Safe Torque Off), SBC (Safe Brake Control) and SS1 (Safe Stop 1) features are all integrated, enabling their application on basic safety requirements. An optional software license allows for extended safety functions, along with software for a single positioning function (EPos). Communications interfaces include Profibus DP, Profinet (Ethernet I/P), RS-485 (USS protocol, Modbus RTU) and CANopen. Other features include an integrated USB port, so users can go online to facilitate engineering set-up and maintenance, plus an integrated slot for an SD card to allow simple cloning and firmware updates or upgrades. Typical applications include single drives with a large number of I/O or those with high speed control requirements, including extruders, centrifuges, wire-drawing machines, basic fabric webs, conveyors, lifters and others in markets ranging from automotive assembly, textiles, printing and chemical processing to nearly all conveyors and material handling.

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