Electric control valve is a control valve that uses power to drive the electric actuator and then drive the valve to throttle. It is an important executive unit instrument in industrial automation process control. With the increasing degree of automation in the industrial field, it is being more and more used in various industrial production fields.

电动调节阀与传统的气动调节阀相比具有明显的优点：（只在工作时才消耗电能），（无碳排放），安装快捷方便（无需复杂的气动管路和气泵工作站）工作电源：AC22V 380V等电压等级。

Compared with the traditional pneumatic control valve, the electric control valve has obvious advantages: energy saving (electric energy is consumed only when working), environmental protection (no carbon emission), fast and convenient installation (without complex pneumatic pipeline and air pump workstation). Working power supply: ac22v 380V and other voltage levels.

故障一：执行器不动作，但控制模块电源和信号灯均亮。

Fault 1: the actuator does not act, but the power supply and signal lamp of the control module are on.

处理方法：检查电源电压是否正确;电动机是否断线;十芯插头从端到各线终端是否断线;电动机、电位器、电容各接插头是否良好;用对比互换法判断控制模块是否良好。

Treatment method: check whether the power supply voltage is correct; Whether the motor is disconnected; Whether the ten core plug is disconnected from the end to each wire terminal; Whether the plugs of motor, potentiometer and capacitor are in good condition; Judge whether the control module is in good condition by comparison and exchange method.

故障二： 执行器不动作， 电源灯亮而信号灯不亮。

Fault 2: the actuator does not act, the power light is on and the signal light is not on.

处理方法：检查输入信号性等是否正确;用对比互换法判断控制模块是否良好。

Processing method: check whether the input signal is correct; Judge whether the control module is in good condition by comparison and exchange method.

故障三： 调节系统参数整定不当导致执行器频繁振荡。

Fault 3: the actuator oscillates frequently due to improper adjustment of system parameters.

处理方法：调节器的参数整定不合适，会引起系统产生不同程度的振荡。对于单回路调节系统，比例带过小，积分时间过短，微分时间和微分增益过大都可能产生系统振荡。可以通过系统整定的方法，合理的选择这些参数，使回路保持稳定速度。

Treatment method: improper parameter setting of the regulator will cause varying degrees of oscillation of the system. For single loop regulation system, system oscillation may occur if the proportional band is too small, the integration time is too short, and the differential time and differential gain are too large. These parameters can be reasonably selected through the method of system tuning to keep the loop at a stable speed.

故障四：执行器电机发热迅速、震荡爬行、短时间内停止动作。

Fault 4: the actuator motor heats rapidly, vibrates and crawls, and stops operating in a short time.

处理方法： 用交流2V 电压档测控制模块输入端是否交流干扰动;检查信号线是否和电源线隔离;电位器及电位器配线是否良好; 反馈组件动作是否正常。

Treatment method: measure whether the input end of the control module is disturbed by AC 2V voltage; Check whether the signal line is isolated from the power line; Whether the potentiometer and potentiometer wiring are in good condition; Whether the feedback component operates normally.

故障五：执行器动作呈步进、爬行现象、动作缓慢。

Fault 5: the action of actuator is stepping and crawling, and the action is slow.

处理方法： 检查操作器传来的信号动作时间是否正确。

Processing method: check whether the signal action time transmitted by the operator is correct.

故障六：执行器位置反馈信号太大或太小。

Fault 6: the actuator position feedback signal is too large or too small.

处理方法：检查“零位”和“行程”电位器调整是否正确;更换控制模块判断。

Treatment method: check whether the adjustment of "zero position" and "stroke" potentiometers is correct; Replace the control module.

故障七：加信号后执行器全开或全关，限位开关也不停。

Fault 7: after the signal is added, the actuator is fully open or closed, and the limit switch does not stop.

处理方法： 检查控制模块的功能选择开关是否在正确位置;“零位”和“行程”电位器调整是否正确;更换控制模块判断。

Handling method: check whether the function selection switch of the control module is in the correct position; Whether the "zero position" and "stroke" potentiometers are adjusted correctly; Replace the control module.

故障八：执行器震荡、鸣叫。

Fault 8: actuator vibrates and sounds.

处理方法：主要是因为灵敏度调得太高，不灵敏区太小，过于灵敏，致使执行器小回路无法稳定而产生振荡，可逆针微调灵敏度电位器降低灵敏度;流体压力变化太大，执行机构推力不足;调节阀选择大了、阀常在小开度工作。

Treatment method: it is mainly because the sensitivity is adjusted too high, the insensitive area is too small and too sensitive, resulting in the instability of the small circuit of the actuator and oscillation. The reversible needle fine-tuning the sensitivity potentiometer reduces the sensitivity; The fluid pressure changes too much and the thrust of the actuator is insufficient; When the control valve is large, the valve often works at a small opening.

故障九：执行器动作不正常，但限位开关动作后电机不停止。

Fault 9: the actuator does not operate normally, but the motor does not stop after the limit switch acts.

处理方法：检查限位开关、限位开关配线是否有故障;更换控制模块判断。

Treatment method: check whether the limit switch and limit switch wiring are faulty; Replace the control module.

故障十：执行器皮带断。

Fault 10: the actuator belt is broken.

处理方法： 检查执行器内部传动部分是否损坏卡住;“零位”和“行程”电位器调整是否正确;限位开关是否正确。

Treatment method: check whether the internal transmission part of the actuator is damaged and stuck; Whether the "zero position" and "stroke" potentiometers are adjusted correctly; Check whether the limit switch is correct.