Product Announcement from Dunkermotoren - USA

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SI - Speed Electronics Integrated If 4-quadrant digital speed control is required, SI motors are the next step in functionality. This motor can be commanded to run in either direction, stop and hold with torque, and stop without torque (coast). These are all accomplished through digital inputs. Other inputs can switch between pre-set speeds (field programmable) or allow for a variable analog speed reference. The accel/decel ramps can also be field programmed. Digital outputs are also provided which can give hall-effect pulses, direction of rotation and ready/error state information back to a PLC for example. Where brush life is not a concern, the SI electronics are also available with brush-type motors.

PI - Parameterization Electronics Integrated
In addition to closing current and speed control loops, the PI can also close a
position loop. Utilizing Dunkermotoren's PC-based graphical user interface
(Drive Assistant) the mode of operation is selected, the parameters for the motorare set and then downloaded to the motor. Once the motor is ameterized it runs as a stand-alone, programmed servo which interfaces to the rest of the machine via digital and analog IO. There are many different modes of operation to choose from, such as analog or digital torque control, analog or digital speed control and digitally selectable position control (relative, absolute, & modulo).

CI - CANopen Electronics Integrated Another trend in machine/system design is the utilization of distributed control of not only IO devices, but motors as well. The CI motor combines both of these in one as a single node on a Controller Area Network. The OEM's CANopen master provides the overall control of all of the nodes (up to 127) on the network. The CI slave motor's motion is controlled by the master via Dunkermotoren's object dictionary or CAN in Automation's DSP 402, drives profile. In some cases, the ability to access each motor's IO through the CAN network may eliminate the
need for separate IO modules and/or PLC altogether.

 
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