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Programmable 2 x 20A DC or 1 x 40A DC Motor Controller Combines Advanced Features and Small Size

Company: Roboteq, Inc.
Programmable 2 x 20A DC or 1 x 40A DC Motor Controller Combines Advanced Features and Small Size

The controller accepts commands from analog joystick, standard R/C radio, USB or RS232 interface, and can switch automatically from one mode to the other. An additional connector is provided for interfacing directly to a miniature 2.4GHz spread spectrum RC receiver.

The SDC2130 incorporates a Basic Language Interpreter capable of executing over 50,000 Basic instructions per second. This feature can be used to write powerful scripts for adding custom functions, or for developing automated systems without the need for an external PLC or microcomputer.

The controller’s two channels can be operated independently or combined to set the direction and rotation of a vehicle by coordinating the motors on each side (tank-like steering). The motors may be operated in open or closed loop speed or position modes with a 1 kHz update rate. The SDC2130 includes inputs for two Quadrature Encoders up for precise speed and traveled distance measurement.

The SDC2130 features intelligent current sensing that will automatically limit the power output in all load conditions. The controller also includes protection against overheat, stall, and short circuits. The controller is very conservatively rated at 20A per channel or 40A in the single channel version. Using very low RDSon MOSFETs, the controller will generate only 16W of heat at full power.

The SDC2130 is built into a very compact 70mm x 60mm, board-level open frame design. The board comes equipped with an aluminum bottom plate that ensures sufficient heat dissipation for operation without a fan in most applications. Additional cooling can be achieved by mounting the board and its bottom plate directly against a metallic chassis.

The controller includes up to 4 analog, 6 digital and 4 pulse inputs. Two 1A digital outputs are provided for activating, lights, valves, brakes or other accessories. The controller’s operation can be optimized using nearly 80 configurable parameters, such as programmable acceleration or deceleration, amps limits, operating voltage range, use of I/O, and more.

A free PC utility is available for configuring, tuning, monitoring and exercising the motor. The controller can be reprogrammed in the field with the latest features by downloading new operating firmware from Roboteq’s web site.

The SDC2130 is rated 30V and is available now to customers worldwide at $175 in single quantities, complete with cable and PC-based configuration software. The SDC2150 is rated at 50V max and is priced at $225. Product information and software can be downloaded from the company’s web site.

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