PFEA112-20 3BSE050091R20 Adaptive Function Module

PFEA112-20 3BSE050091R20

Technical Parameters：

  • High-performance CPU with 50Mb memory, fast scan time
  • Industry-leading 7 communications ports, including built-in local expansion and Ethernet remote I/O ports are standard on the CPU
  • USB Programming and USB Data Logging are resident on the CPU
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Description

PFEA112-20 3BSE050091R20 Adaptive Function Module

PFEA112-20 3BSE050091R20 combines the advantages of the 1st and 2nd control schemes. When the absolute value of the difference between the actual valve position value Pv and the set value Sv is greater than En, the module adopts the long pulse drive; when the difference between the two is between the threshold value En and one-half of the dead zone DeadZoon with a short pulse step by step control, that is, the module outputs a short pulse of the Ton time and waits for the Toff time until the valve value and the set value of the difference between the absolute value of the difference between the two values is less than one-half of the dead zone.

PFEA112-20 3BSE050091R20 stop the output when the control accuracy is reached, completing the control process once. the PAT module adopts the above control scheme to make full use of the inertia of the system and the characteristics of the electric actuator, effectively overcoming the overshoot and oscillation phenomenon that occurs in the process of the electric actuator control, and improving the control accuracy. the settings of En, Ton and Toff should be suitable, with no more than 2 to 3 short pulses as the best, so as to speed up the adjustment time.

The technical performance parameters mentioned in the manual of PFEA112-20 3BSE050091R20 electric actuator are not introduced except the external characteristics such as deadband, return difference, hysteresis and operating voltage, and the internal characteristics such as Ton, Toff, Smin, etc. The PAT module self-learning function can be used for the control of the PFEA112-20 3BSE050091R20 electric actuator. Through the self-learning function of PAT module, these characteristic parameters of electric actuators can be obtained, which provides a powerful support for the reasonable setting of characteristic parameters.

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