Introducing a new type of intelligent valve control module - modular intelligent electric valve controller

Overview DSM modular intelligent electric valve controller, the use of advanced micro-processing technology, high integration of IC chips and long-life power output devices, to accept from the host instrument DC4 ~ 20mA adjustment signal and the lower electric actuator DC4 ~ 20mA valve position Feedback signal (or potentiometer "three-wire" signal), the output "on" and "off" signal, to achieve the valve opening control and regulation. DSM modular intelligent electric valve controller, with digital setting, display, limit, motor stall protection, break alarm and valve self-calibration and other advanced features. Can *, stable and precise control of the valve, throttle and baffle adjustment structure. Can be widely used in power generation, metallurgy, petroleum, chemical and other fields. The DSM Modular Smart Electric Valve Controller can be used with single-phase AC motor actuators such as the DKJ and DKZ actuators, but also with actuators and actuators for three-phase AC motors. DSM modular intelligent electric valve controller with the use of the traditional electric valve, the reliability, stability, accuracy, etc. can be increased more than several times, to transform and enhance the old electric actuator has brought a new life. Main features: ● Intelligent calibration: No need to adjust the potentiometer for "zeroing" and "full" calibration of the valve position opening and valve position output current, without complicated debugging with the reference measuring instrument, as long as the actual valve The "all off" and "fully open" position by pressing the button, it automatically correct the newly set range of 0-100% and DC4-20mA. ● Digital setting of electric zone parameters, minimal overshoot, good stability, high control accuracy. ● open to freedom: to change the valve opening and valve mode, no need to change any wiring, set by the button to complete. ● intelligent step: to avoid oscillation or "Chong" phenomenon, improve control accuracy. ● Super error detection and alarm function: In the event of actuator failure, intelligent error detection and alarm function can automatically detect and alarm, display the cause of the actuator failure, accurately indicate the operating status of the actuator. Depending on the cause of the fault, the display of different alarm signals will greatly shorten the time required for the user to eliminate the fault and return the actuator to its normal working condition as soon as possible. ● Automatic phase protection: In the past, when wiring in the field, the phase sequence of the three-phase AC power supplied to the actuator must be guaranteed to be correct because once the phase sequence is wrong, the motor will be rotated incorrectly and the valves and actuators will be damaged. Users can now save this trouble, no longer need to consider the phase sequence wiring problems. When the phase of the field wiring is reversed, the phase synchronizer will automatically correct the phase to ensure that the valve is executed in the direction of the command. That is to say, the actuator always rotates in the pre-set opening direction when it receives the opening command, and will not run in the opposite direction due to the phase sequence exchange. In the early days, most of the equipment was qualified to use static analysis methods, which is amenable to simple-structured control valves compared to complex buildings and other structures. The input acceleration rates used for these analyzes are usually based on establishing reaction accelerations or even on the site rather than the reaction acceleration of the pipeline system, but there is still no standard. In the early stages of development, professional organizations established various commissions and professional groups for the special needs of the nuclear industry. The two associations most influential on valve manufacturers were the American Society of Mechanical Engineers (ASME) and Electrical and Electronic Association (IEEE). The ASME, Part 3 of the Boiler and Pressure Vessel Code, was written specifically for nuclear power plant components and in 1968 this part became the rudiment of the draft regulations and for the first time in 1971 it was used in its entirety However, ASME-III only specifies the pressure range of the valve, and by definition it is simply a bolt with body, bonnet, stem and body cap The pressure range is not mentioned in the ASME-III for the rest of the valve, ie accessories and drives, and as a result only the pressure line integrity is covered by regulations without the ability to deal with the operation of the plant.