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Integrated Stepper Motor Linear Actuator and Chopper Drive

30 October 2009

Reliance

Alongside precision couplings, gears and intelligent motion control, Reliance Precision Mechatronics, the UK distributor for Haydon Kerk Motion Solutions, a premier manufacturer of linear motion products introduces the MotoDrive™ PDE Captive Linear Actuator which is available in size 17 single or double stack. The MotoDrive comes with an integrated chopper drive forming a compact system that is ideal for precision motion control applications.
The MotoDrive is capable of an output force of 220N (50lbs) for the single stack version and 350N (78lbs) for the double stack version. The captive configuration allows for a self-contained linear actuator unit with an anti-rotation device guiding a splined output shaft. The MotoDrive is ideal for applications requiring shorter stroke lengths (up to 2.5") such as precision fluid dispensing, throttle control and valve movement.
The MotoDrive can be programmed for micro-stepping with a step resolution range of 200 full steps per revolution to 12,800 steps per revolution when micro-stepping. With a supply voltage of 12 to 42 vdc, the MotoDrive actuator functions with a run current programmable up to 2.6 Arms per phase. Optically isolated inputs of pulse, direction and enable signals are required for operation. The PULSE input is a square wave that sets the speed of the actuator. The DIRECTION input is either a high or low signal using a +5vdc for shaft extend and ground potential for shaft retract. The ENABLE input is also a +5vdc signal that activates the drive for operation.
Holds current on the drive is adjustable and can be selected as zero, 25, 50, 75 or 100 percent of run current using a jumper and associated pins located in a connector on the side of the drive.


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