LVDT Sensor HTD-200-3 control circuit introduction

 LVDT Sensor HTD-200-3 control circuit introduction: When the unit is running, the valve adjustment command issued by the DEH system is sent to the MOOG valve through the VP card output of the controller. The MOOG valve receives the electrical signal of the opening command, converts it into oil pressure regulation and enters the oil motor, changes the oil intake of the high-pressure anti-fuel oil in the oil motor, and the valve stem position of the oil motor changes accordingly. The mechanical position of the valve is input to the VP card of the controller through the feedback of the LVDT sensor HTD-200-3I. After setting the PID in the VP card, the electrical signal is sent to the valve to form a closed loop. Therefore, the stability of the LVDT sensor HTD-200-3 is particularly important in the operation of the unit. If the LVDT sensor HTD-200-3 fails, it will cause main steam pressure fluctuation, sudden change in unit load, shaft vibration, and jump in unit noise.