Soft Shift® Solenoids Variable positioning linear device Slow, smooth motion High starting force Quiet operation LINEAR Soft Shift® 106 actuation life rating All products are RoHS Compliant Soft Shift solenoids have a unique construction which allows easy transition from snap action to variable position. Using the same power, starting force is three to five times higher than standard solenoids at the fully de-energised position. This is advantageous for starting inertial loads or detented mechanisms, and for conserving electrical power. In snap action applications, typical solenoids move to the end of the stroke within milliseconds, with a characteristic increase in ending force and acceleration. With the Soft Shift solenoid plunger, however, velocity can be controlled by ramping Ledex® Solenoids the input current for slow, noiseless operation. For applications where variable positioning is desired, closed loop control can be accomplished by adding electronic controls. This gives accurate, repeatable action. The essentially horizontal force curves prevent rapid acceleration at the end of the stroke, avoiding the excessive wear, noise and vibration that characterise standard solenoids. A Soft Shift solenoid can be a low-cost alternative to a linear stepping motor with a lead screw for up to and including a 10.7 mm stroke. Performance Curves Starting Force The performance curves in this section serve as guides to determine the solenoid size needed to produce a desired force at a given stroke, duty cycle, and power source. All curves were developed under the following standard test conditions: ambient temperature of 20°C, 65% relative humidity. When determining an application’s force requirement, apply a 1.5 safety factor. For example: a load requiring 1.0 N of force should utilise a solenoid providing 1.0 N x 1.5 or 1.5 N of force.

Soft Shift® Solenoids Duty Cycle Duty cycle is determined by: ON time/(ON + OFF time). For example: a solenoid is actuated for 30 seconds, then off for 90 seconds. 30 sec ON / (30 Sec ON + 90 sec OFF) = 30/120 = 1/4 or 25% duty cycle. Ledex Soft Shift® solenoids are rated for various duty cycles ranging from continuous to 10% duty. Note that maximum ON time for a particular application can be a factor which overrides the duty cycle rating. For example, at 25% duty cycle, the maximum ON time for a given Soft Shift solenoid is 36 seconds. If, however, the solenoid is operated at a cycle rate which...

LINEAR Soft Shift® Soft Shift® Selection Soft Shift solenoids are available in five sizes. Use the selection overview chart to determine which size offers the desired performance and mechanical specifications. Refer to the individual size specification pages for complete performance and mechanical data. All products are RoHS Compliant Package Dimensions (mm) Dia. Length 28.6 25.0 Force (N) @ Maximum Stroke and Specified Duty Cycle 100% 50% 25% 10% 4.45 6.23 8.9 16.46 All data is at 20°C coil temperature. Force outputs degrade with elevated temperatures. Battery Powered High Speed MiniatureMiniature...