ABB locator overview

The core of ABB positioner is that the microprocessor controls the CPU, and all the processing operations of the program are here. After 4000 steps of A/D conversion, the input signal and position feedback are processed with 12 bits and 20ms sampling. So as to ensure the accuracy and rapidity of signal processing. The power supply of CPU is directly taken from the input signal.

The operation program includes a self-correction process for automatically adjusting parameters and an adaptive program for optimal control operation of fine positioning. Electric conversion gas driven electric regulating valve with 3/3 pneumatic switch. The positioning electric signal sent by CPU is converted into pneumatic signal in proportion, that is, 3/3 pneumatic switch is adjusted in proportion. The gas output from the positioner to the pneumatic actuator Taitai gas discharge is adjusted in proportion. When the set positioning value is reached, the 3/3 pneumatic switch is closed in the middle position.

ABB positioner is equipped with a built-in operation keyboard, including a row of LCD screens and three buttons. The design of operation keyboard is based on optimizing local configuration, debugging and monitoring during operation. In addition, ABB is a standard two-wire equipment. The power supply voltage generates 4 ~ 20mA signal. No external power supply is required. When the positioner works in the factory setting, it can be used without any digital communication. If communication is needed, it can be communicated with LKS adapter through RS232 interface or modulated on 4 ~ 20mA signal.