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Single-seat electric pneumatic valve common failures and solutions
by：AIRWOLF
2020-10-15
Single-seat electric pneumatic valve, as one of the work in the production of common pneumatic valve, when it malfunctions should be how to do?
The following terms speak several common failures and solutions.
failure 1: actuators, control module of power supply and signal lights. Methods: check the power supply voltage is correct; The motor is bad; If ten core plug from each row end-to-end disconnected; Whether, potentiometer and capacitor motor each plug; By comparing the exchange method to determine control module.
fault 2: actuators, power lamp open, signals are not open.
processing method: check the polarity of the input signal is correct, etc. ; USES contrast exchange method to determine whether a control module is good. Fault 3:
control system parameter is set properly, actuator frequency oscillation. Treatment method:
the regulator parameter adjustment doesn't fit, it will cause the system to produce different degree of oscillation. For single loop adjustment system, the system oscillation may be too small in proportion, integral time too short differential gain, differential time is too long, too big. These parameters can be through the system alignment method to select reasonably, to maintain the stability of the circuit.
fault 4: actuator motor heat fast, concussion, stop in a short time.
processing method: use a 2 v AC voltage measurement control module of whether the input is the communication interference; Check whether the signal is isolated from the power cord; Potentiometer and potentiometer wiring whether in good condition; Feedback component is working correctly. 5:
fault actuator move one step at a time, and crawling and move slowly.
processing method: check whether the mobile operator signal time is correct. Fault 6:
the actuator position feedback signal is too big or too small.
processing method: check the 'zero' and 'stroke' potentiometer adjustment is correct; Replace control module to judge.
7: fault actuator signals after open or close, limit switch did not stop.
processing method: check the function selection switch control module in the correct position; 'Zero' and 'stroke' potentiometer is correct; Change control module.
8: fault actuator, the call.
processing methods: mainly because sensitivity adjusted too high, not sensitive area is too small, too sensitive, the actuator small oscillation circuit cannot be stable, can reduce the sensitivity counterclockwise fine-tuning potentiometer sensitivity; Fluid pressure change is too big, thrust actuator; Regulating pneumatic valve selection big, often in a small open of the pneumatic valve. 9:
fault actuator movement is unusual, but limit switch motor moves after non-stop.
processing method: check the limit switch, limit switch wiring fault; Change control module.
failure 1: actuators, control module of power supply and signal lights. Methods: check the power supply voltage is correct; The motor is bad; If ten core plug from each row end-to-end disconnected; Whether, potentiometer and capacitor motor each plug; By comparing the exchange method to determine control module.
fault 2: actuators, power lamp open, signals are not open.
processing method: check the polarity of the input signal is correct, etc. ; USES contrast exchange method to determine whether a control module is good. Fault 3:
control system parameter is set properly, actuator frequency oscillation. Treatment method:
the regulator parameter adjustment doesn't fit, it will cause the system to produce different degree of oscillation. For single loop adjustment system, the system oscillation may be too small in proportion, integral time too short differential gain, differential time is too long, too big. These parameters can be through the system alignment method to select reasonably, to maintain the stability of the circuit.
fault 4: actuator motor heat fast, concussion, stop in a short time.
processing method: use a 2 v AC voltage measurement control module of whether the input is the communication interference; Check whether the signal is isolated from the power cord; Potentiometer and potentiometer wiring whether in good condition; Feedback component is working correctly. 5:
fault actuator move one step at a time, and crawling and move slowly.
processing method: check whether the mobile operator signal time is correct. Fault 6:
the actuator position feedback signal is too big or too small.
processing method: check the 'zero' and 'stroke' potentiometer adjustment is correct; Replace control module to judge.
7: fault actuator signals after open or close, limit switch did not stop.
processing method: check the function selection switch control module in the correct position; 'Zero' and 'stroke' potentiometer is correct; Change control module.
8: fault actuator, the call.
processing methods: mainly because sensitivity adjusted too high, not sensitive area is too small, too sensitive, the actuator small oscillation circuit cannot be stable, can reduce the sensitivity counterclockwise fine-tuning potentiometer sensitivity; Fluid pressure change is too big, thrust actuator; Regulating pneumatic valve selection big, often in a small open of the pneumatic valve. 9:
fault actuator movement is unusual, but limit switch motor moves after non-stop.
processing method: check the limit switch, limit switch wiring fault; Change control module.
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