R8R Report post Posted December 8, 2017 So I bought a used machine recently that had an electric foot lifter solenoid attached underneath the table. Thing is, it was not plugged into anything and did nothing to lift the foot. The motor had no input plugs for it (basic servo). I've since sold the machine but I kept the solenoid. I'd like to apply it to the next flatbed machine I buy. Is there a way to add a 24v (or 30v?) power supply and a knee switch to this thing, with running just a basic motor for the machine? (or a motor with positioner) Or would I need a high end motor setup that has all the various control inputs? The solenoid looks just like the one in the attached file. Quote Share this post Link to post Share on other sites
Gregg From Keystone Sewing Report post Posted December 8, 2017 (edited) Typically, this is working off of a 24 or 30V power source, normally controlled by a motor control box. Usually, heel back on the foot treadle, with the correct controls, will input signal to the motor, and the motor will then send the signal to the solenoid foot lifter. Many motor will perform this, but common names of motor brands are Efka, Ho Hsing, and Mitsubishi. Some less expensive motors have a 24 volt output as well, but they are not common. Consew has or had a 220V single phase model that had the output feature, CS4002 is the model. This can also be done using switches, say a mechanical switch hooked up to the foot treadle and then connected to a 24 or 30 volt source that will fire this off. I have a terrible image attached, but it may be enough to show a common foot lifter setup that we would use this for. Edited December 8, 2017 by Gregg From Keystone Sewing Quote Share this post Link to post Share on other sites
R8R Report post Posted December 8, 2017 Cool... so basically any 24v or 30v power source might work.... hmm. Any idea what kind of amperage it might require? I've looked at a bunch of motor controllers but none of them list the amperage supplied in the specs. I found a similar solenoid and knee switch online. I think with a proper power adapter and the knee switch I could make it work. Quote Share this post Link to post Share on other sites
Gregg From Keystone Sewing Report post Posted December 8, 2017 24VDC, 3.0 Watt will do it. Quote Share this post Link to post Share on other sites
R8R Report post Posted December 8, 2017 Awesome, thanks Gregg! Quote Share this post Link to post Share on other sites
