Captive linear actuator for precision motion applications
08 October 2009
Haydon Kerk Motion Solutions has introduced the MotoDrive PDE captive linear actuator, 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 captive linear actuator system is capable of an output force of 220N (50 lbs) for the single stack version and 350N (78lbs) for the double stack version. The captive configuration allows a self-contained linear actuator unit with an anti-rotation device guiding a splined output shaft. The captive configuration of 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 load connects to the threaded shaft end.
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.
Hold 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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