Fault 1: The actuator does not act, but the power supply and signal lights of the control module are on.
Treatment method: check whether the power supply voltage is correct; whether the motor is disconnected; whether the ten-pin plug is disconnected from the end to the terminal of each line; whether the motor, potentiometer, and capacitor are connected to the plug in good condition; judge whether the control module is in good condition by the comparison and exchange method.
Fault 2: The actuator does not act, the power light is on but the signal light is off.
Processing method: Check whether the polarity of the input signal is correct; use the comparison and exchange method to judge whether the control module is in good condition.
Fault 3: Improper setting of the adjustment system parameters causes the actuator to oscillate frequently.
Treatment method: The parameter setting of the regulator is not suitable, which will cause the system to oscillate to different degrees. For a single-loop control system, if the proportional band is too small, the integral time is too short, and the differential time and differential gain are too large, system oscillation may occur. These parameters can be reasonably selected by the method of system tuning, so that the loop can maintain a stable speed.
Fault 4: The actuator motor heats up rapidly, vibrates and crawls, and stops action in a short time.
Treatment method: Use the AC 2V voltage range to test whether the input end of the control module is disturbed by AC; 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.
Control valve manufacturers
Fault 5: The action of the actuator is stepping, crawling, and slow.
Processing method: Check whether the signal action time from the operator is correct.
Fault 6: The actuator position feedback signal is too large or too small.
Treatment method: Check whether the "zero" and "travel" potentiometers are adjusted correctly; replace the control module to judge.
Fault 7: After the signal is applied, the actuator is fully opened or fully closed, and the limit switch does not stop.
Treatment method: Check whether the function selection switch of the control module is in the correct position; whether the "zero" and "travel" potentiometers are adjusted correctly; replace the control module to judge.
Fault 8: The actuator vibrates and beeps.
Treatment method: The main reason is that the sensitivity is adjusted too high, the insensitive area is too small, and the sensitivity is too sensitive, which makes the small circuit of the actuator unable to stabilize and oscillates. The sensitivity potentiometer is fine-tuned counterclockwise to reduce the sensitivity; the fluid pressure changes too much, and the thrust of the actuator is increased. Insufficient; the selection of the regulating valve is large, and the valve often works at a small opening.
Control valve manufacturers
Liaoning Yuanlu Machinery Equipment Manufacturing Co., Ltd. is a Taiwanese-invested enterprise that develops and manufactures water supply and drainage valves, industrial valves and their automatic control systems and environmental protection equipment. The main products are gate valve, globe valve, ball valve, butterfly valve, check valve, regulating valve, etc. 12 categories, more than 200 series, more than 4000 specifications, widely used in petroleum, petrochemical, chemical, electric power, metallurgy, water conservancy, medicine, Municipal construction, water supply and drainage and other fields of the national economy.
Tel: 133-3231-9780