Switchover from rapid to feed speed is position-dependent and is initiated by the limit switch S2, which feeds an electrical signal via the relay K2 to the solenoid coil Y2.

• 从急流向加料速度转换是要看情况的,并且转换被通过继电器K2向磁铁线圈Y2汇聚电信号的限位开关S2初始化。