DKJ rotary actuators

Electronic rotary electric actuator electric actuator electronics electronic electric actuator rotary electric actuators rotary actuator Yangzhou Bell Valve Control Co., Ltd. specializing in the production of Siemens electric actuators, Rotork electric actuators, electric actuators German PS , a fine small electric actuator, LQ series electric actuators, DKZ straight trip electrical actuators, DKJ rotary electric actuators, DQW part-turn actuators, DZW multi-turn actuator, 3810 series electric actuators, electric valve controllers, electric valve, electric valve, electric butterfly valve, electric ball valves, electric control valves, check valves, solenoid valves, shut-off valve, widely used in electric power, steel, petroleum, metallurgy, chemical industry, building and plumbing and other automation industry projects. A, DKJ electronic rotary electric actuators DKJ Products rotary actuator is DDZ-Ⅱ, Ⅲ type series of instruments in the execution unit, and DDZ-Ⅱ, Ⅲ type auxiliary control unit supporting the use of the instrument. It is powered by an AC power source, to accept a unified standard signal 4-20mADC, transmitter input signal and the position feedback signal by comparing the servo amplifier, the output of the switching signal, the drive motor through the mechanical reduction, the input signal is converted into the corresponding The angular displacement of the output shaft. Automatically operated tailgate damper, butterfly valve means to complete the system of automatic adjustment task. It and the transmitter, adjust the instrument package, can be composed of a variety of regulatory systems, it DFD-07A, 09,1000,100IA type or SFD type operator can adjust the system is equipped with a manual _ automatic two-way switch without disturbance, remote manual operating and regulating the safety interlock system of protection. It is widely used in power plants, metallurgy, petroleum, chemicals, machinery, light industry, textile, food and pharmaceutical industries and regulation systems. Two, DKJ electronic rotary actuator DKJ works Electronic proof rotary actuator by AC servo motor is a prime mover of the position servo mechanism, both the execution unit and DDZ-Ⅱ, Ⅲ electric unit combination to instrument DFD-09,07A, 1000,100IA type operator, and can and ZPE servo amplifiers supporting the use of the composition of a control system unit. Its system block diagram shown in Figure 1. Executive body portion includes AC servo motor, reducer and position transmitter. Three, DKJ electronic rotary actuator motor Description DKJ rotary actuator by way servo motor drive (DKJ610 also a three-phase motor drive), the series of one-way servo motors and electromagnetic brake lever system two kinds of acting for the user to choose. Electromagnetic brake motor torque is increased, reducing the operating current, to improve braking ability, good interchangeability. When Local Control, as long as the motor is started the knob end of the cut to "manual" position, you can make the brake disc and Wheel disengaged handwheel manually operated locally on the actuator. Four, DKJ electronic rotary actuator speed reducer Description reducer is turn a small motor output torque is converted into low speed, high torque gear transmission mechanism actuator output shaft motion rate. The cylindrical gear reducer and mixing mechanism with small teeth difference planetary gear reducer system belongs. Bell solemn promise: Products factory have through the strict quality control operations and performance tests, from now on under normal conditions of use year warranty. But non-human can resist the disaster, external damage, and without our consent and dismantle the scope of warranty are not in the list. Electronic rotary electric actuator electric actuator electronics electronic electric actuator rotary electric actuators rotary actuator DKJ Series rotary electric actuator a working principle DKJ series electric actuators for industrial process measurement and control systems terminal control device capable of system control signals into an output shaft angular displacement, linear displacement, position control valves and other closure member or other regulatory agencies, work according to a predetermined state controlled media system. Actuator control mode is divided according to the proportional and integral formula. The proportion of the electric actuator servo amplifier and integral actuator which is able to be compared (closed loop control) to change the output shaft stroke control signal system and the feedback signal on the output shaft position, so that the output signal is proportional to the relationship. Integral actuator by a servo motor, reducer and position transmitter which is able to achieve with electric operation with the remote operation of the valve or other regulatory agencies. Second, the main technical parameters DKJ Series actuators made "with electric actuators industrial process measurement and control system" provided for in the People's Republic of China national standard GB11922-89. 1. Input signal: Devices: 4--20mADC or 0--10mADC, general formula: switch 2. Enter the channel resistance: the number of 250 ohms or 200 ohms 3. input channels: Normal distribution amplifier 3, electronic 1 The basic error: 2.5% 5. Backlash: ≤1.5% 6. Dead: ≤3% 7. damping characteristics: ≤3 second half cycle 8. Power voltage: 220V or 380V, 50Hz 9. Working environment: Temperature: -10 0 C - +55 0 C, humidity: ≤95%, three electric actuator installation, adjustment, use and maintenance 1. Installation 1.1 servo amplifier servo amplifiers installed in the control room installation of the instrument. . Servo amplifier has two installation types: wall-mounted structure vertically mounted on the control cabinet metal frame column, rack-mounted structure mounted on the control cabinet rack. Servo amplifier appearance and installation dimensions specified by the servo amplifier installation instructions. 1.2. Mount the actuator integral actuator mounted on a concrete base or metal framework and land foot screws. Output terminal actuator arm can be connected via connecting rod and special connector and regulatory agencies. Actuator not add oil at the factory, to be officially put into operation before removing the top screw rings reducer, adding machine oil from the screw, the amount of lubricating oil injection from the oil window of observation, the oil should be located in two between hole. 2. Adjust 2.1 Working position adjustment Loosen the nut brake pads, remove the motor plug, remove the cover position transmitter, handwheel and motor handle in the "manual" position, shaking the hand wheel of the output shaft rotated to a position corresponding to the lower limit position feedback current (hereinafter referred to as the lower limit position). According to the state is a positive effect or a reaction to make a brake block against the live export arm, fastening a good fixed brake pad nuts, shaking the hand wheel (clockwise when positive action, counterclockwise rotation counterproductive), the output shaft 90 ° (hereinafter referred to as the upper limit position this location). Make another brake pads to live close to the output arm on the other side, fastening a good nut. Adjust the cam to the output shaft located between two extreme positions when the corresponding micro switch operation, the circle tightening the nut on the camshaft good. Connect the motor connections, the hand wheel and motor handle in "Electric" position, the power, the output shaft rotating back and forth to observe the adjustment is correct. The rotation of the output shaft to the lower limit position, loosen the fastening screws conductive plastic potentiometer on the plate, hold the potential to enable the slowly rotating position feedback current is limited so far, screw fastening plate on good working signal range. If the difference adjustable print "0%" potentiometer circuit board, turn the motor direction of rotation of the upper limit of the output axis position feedback current should be increased (such as location and reduces the feedback current is reduced to a point after the sudden steep shall be 1,3 conductive plastic potentiometer terminals on the swap and re-adjust the position feedback current limit. When the limit is reached the output shaft, a 100% adjustment potentiometer on the printed circuit board, so that the position feedback signal to a working signal an upper limit for the ratio of actuator, the access servo amplifier, the input signal is a working signal range limit, the output shaft should be rotated to the lower limit position, such as deviation, adjustable conductive plastic potentiometer or a printed circuit board 0% potential ; a working range of the input signal is the upper limit, the upper limit of the output shaft to be rotated to a position, such as deviations from an adjustable potentiometer 100% of printed circuit board is adjusted, the position transmitter installed in the cover 3. The use of electric. There are three kinds of actuators operation: a "automatic" action - to accept the system automatically run the operation control signal b "Manual" operation (remote control) - Human given signal to the actuator to achieve electrical operation C..... Local operation - off current, the operator rotating the handwheel operation mechanism in place to implement automatic operation: the ratio of actuator, when access to electric operation, the need to operate the switch handle to "Auto. "position, you can automate manual operation: the operator go to the" manual "position local operation: mainly used for installation or system, when the line fails, the hand wheel for an electric-place operation operator to the middle position, the motor plug aside, the motor handle and hand wheel placed in the "manual" position after the end of the local operation, be sure to handle the handwheel and motor reset to "manual" position, plug in the motor. 4. Maintenance Operator shall be maintained regularly. For vibration larger establishments should always check for loose fasteners, connectors contact is good, locking is reliable and timely maintenance. use frequent executive body to run every year and a half should overhaul in the disassembly position transmitter and gear before unloading must first unscrew the screw hole, the lubricant inside the drain reducer should be carefully cleaned parts, fasteners and replace all worn parts. should remove all lubrication means, refilled with new grease. reducer rated load of not less than 600Nm of actuators have two planetary gear, you should look for a digital spokes located on the planetary gear, which is positive, so that the two gear teeth eight holes strict coincide, then a wheel by 180 ° and then were loaded on eccentric bearings. When checking the motor, remove the rear cover and remove fines brake disc between the brake wheel, the gap and adjust brake disc braking force between the wheels and the brake at the maintenance of each electrical device, pay attention to replace the damaged components and aging wires, replace all micro switch. The position transmitter mounted on the gear unit Be sure to pay attention to the seal work effectively. with 500V megger insulation resistance between conductors of each group and the chassis. Ask reducer injection machine oil. Fourth, fault and maintenance fault causes Remedy Actuator does not move ① Wiring Rewire ② error amplifier fuse blows identify the reasons for exclusion ③ after changing the fuse disconnect the line or bad solder joint inspection of each part is sealing off; between printed circuit boards and sockets, each connector, plug contact is good, to be repaired or replaced. ④ servo amplifier failure by the servo amplifier motor burnout replace manual processing ⑤ ⑥ phase capacitor motor breakdown or failure to replace the sub-phase capacitor above troubleshooting action after executing agency is still working to remove the signal wire shorted thyristor anode and cathode. ① ② motor rotates the motor does not rotate SCR breaking a. Motor burned b. Split phase capacitor breakdown replacement SCR Motor Replacement Replacing the separation phase capacitor power output shaft starts to rotate the servo amplifier ① no input signal output test ② non-zero voltage between the rod conductive plastic potentiometer fastening plate screw loosening caused by zero drift. ③ a thyristor or diode breakdown adjust the zero potentiometer tightening the screws, readjust the feedback signal range, the lower limit of the replacement actuator output shaft to rotate in one direction only ① disconnect a wire leading to a motor servo amplifier fault ② ③ leading to the motor control circuit wiring reversed by servo amplifier repair manual processing to 14 exchange line terminals 3-5 and 8-10 on the wiring soldering proportional actuator input signal and the output shaft angle position feedback unit does not correspond to ① adjustment is not ② proper wiring circuit, component damage (conductive plastic potentiometer damage) reorient check wiring, replace components without position feedback signal ① ② position transmitter wiring error correction replace damaged components