3、 Overview of pneumatic high-pressure valves First of all, it is necessary to clarify the categories of valves. High pressure valves are also divided into several categories. There are overall models, two segment models and three segment models. Different models have different application methods. If there are special needs in special circumstances, you can avoid wrong operation by locking to ensure the normal operation of the system, Locking is actually a good choice. 　　

Fault 2: The actuator does not act, and the power light is on but the signal light is not. Processing method: check whether the polarity of input signal is correct; Use the comparison and exchange method to judge whether the control module is good.