上海璟略与Mecvel共同推出了可以调整限位的内置的紧凑型推杆Ali1和Ali-P，用于对安装空间特别小，对执行部件的行程又需要进行微调的工作场合。 

       Ali1是“枪”型推杆，马达的安装的放向和推杆运行的方向是垂直，总长度大约是55毫米+行程
      Ali1-P是“线”型推杆， 也就是马达的安装的放向和推杆运行的方向是平行的，总长度大约是100毫米+行程 

       在这两种的紧凑型推杆上，可以配置三种微型开关和一个增量型编码器， 对于三种微型开关，如图片，有三种
       A-F是推杆的前端限位开关，P-B是推杆的尾端的限位开关，I-M是推杆的中间位置的限位开关 

        每一顺时针选择A-F和P-B按钮，则限位开关则向推杆前端头移动0.7mm. 

        调整限位开关位置时，注意不能超过推杆规定的极限位置，具体的调整流程如下： 

         1. Adjust P-B switch so that it is at its very end of the stroke, acting on the related screw  

         2. Adjust A-F switch until it reaches its very end of the stroke, acting on the related screw, and by that get back of  about half a turn of the screw 

         3. Retract the linear actuator until the P-B micro is actuated. This is the starting position for the stroke adjustment 

         4. Drive the push rod out until the needed stroke is reached 

          5. Place A-F switch here 

          6. Perform a complete stroke and check its length 

          7. Repeat steps 5 and 6 until the needed stroke is reached