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ESCON 36/2 DC the New DC Servo Motor Controller from Maxon Motors


Despite measuring just 55 x 40 mm, the versatile new ESCON offers extremely dynamic, 4-quadrant control of brushed DC motors to around 72 W, at speeds from 1 to 150,000 rpm.


A variety of operating modes includes open or closed loop speed control, as well as current control, with an array of useful bonus functions, such as speed-ramping capability and the option to enable or disable the power stage depending on the direction of rotation.


Importantly, inputs and outputs can be digitally configured, quickly and easily, simply by plugging in to a PC's USB port and following on-screen instructions. The emphasis on compactness and usability extends to hardware: no external filters or motor chokes are required, and even pre-assembled startup cables are available.


In-built protective circuits safeguard the controller against overcurrent, excess temperature, under and over-voltage, voltage transients and short-circuits in the motor cable. Similarly, adjustable current limitation protects the motor and load from accidental damage.


maxon motor believes the ESCON's energy efficiency of 95% makes it an ideal choice for mobile, battery-powered and other consumption-optimised applications, alongside the obvious uses in automation, small machine manufacturing and mechatronics. Naturally, the controller is designed to be a perfect match for maxon's world-leading, permanent magnet DC motors.


maxon motor UK senior sales engineer Paul Williams said: "The ESCON 36/2 really does push the envelope for miniaturisation - and the USB configuration for input and output is simply child's play." "In fact, with that much per- formance and versatility in such a compact package, the o n l y t h i n g e a s i e r


t h a n t h e


ESCON's setup is making the decision to use one." maxon


New AS-i master connects Simatic S7-1200 with the lowest field level


The Siemens AS-i master CM1243-2 communication module connects AS-Interface networks to the Simatic S7-1200 controller.


The AS-i master CM1243-2 of the Siemens Industry Automation Division offers exceptionally easy and effective connection of the lowest field level to a higher-level controller and thus to the process level and MES level.


The new AS-i master automatically organizes the data traf- fic on the connected line, handles not only signal scanning but also performs parameter setting, monitoring and diag- nostic functions. CM1243-2 also offers additional integrated functions, such as the configuration of Sirius M200D AS-i motor starters without additional function blocks and access via a web interface.


A total of 62 AS-i slaves or 992 inputs and outputs to an A-imaster can be connected. A standard power supply can be connected via the optional DCM 1271 data coupling module, enabling the realization of a low-cost AS-i Pow- er24V network.


Configuration and commissioning of the AS-i master is especially easy to perform due to the integration of the new device in the TIA Portal. AS-i engineering is performed directly in the TIA Portal and is similar to configuration with Profibus and Profinet. No additional software is required. The TIA Portal shows the topology of the connected AS-i network with a click of the mouse. The user can conveniently adapt the parameters of the slaves on screen.


The module significantly expands the application area of the controller. The AS-i master enables sensors and actuators to be easily and quickly integrated at the lowest field level both in the Simatic S7-1200 and in the TIA Portal. Configuration via the TIA Portal is comparably fast and user -friendly, similar to Profinet or Profibus networks.


Siemens Cube20 - New Module, More Flexibility from Murrelektronik


Murrelektronik has expanded it‘s Cube20 family with the addition of the new Cube20 DI32 NPN module, a UL approved in- put module with 32 digital inputs for universal applications. The module can be universally used for NPN or PNP switching sensors. Thanks to a simple jumper on the connection terminals, the module can be switched between NPN or PNP mode:


If the "MOD" terminal is connected to the "US" terminal, the module functions in the NPN mode. If the "MOD" terminal is connected to the "0V" terminal, the module functions in the PNP mode.


The Cube20 is a fieldbus I/O station with modular expandability, which can be integrated along with the Cube67 I/O system. Cube20 is designed for the requirements of modern wiring in control cabinets. High costs from dealing with many individual components are reduced when you use Cube20 thanks to the compact design and a high channel density of 32 channels per I/O module. With 488 channels on 90 cm Cube20 you can easily save space and get more flexibility. Cube20 features maintenance-free plug terminals for single-wire connectivity that is standard in control cabinets.


Murrelektronik For all the most up to date news and products visit www.thepanelbuilder.co.uk November 2011 Page 10


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