Product
Product introduction of DKZ electronic direct stroke electric actuator
DKZ type direct stroke electric actuator can not only be used with type III control unit instrument, but also with newly developed S type control unit instrument, which makes the whole control system more stable, reliable, better performance and more functions. Therefore, according to the requirements of the system for the zKz electric actuator, the user can automatically select the control unit instrument and assemble it into a control unit system.
Model Representation Method of DKZ Electronic Direct Travel Electric Actuator
Working Principle of DKZ Electronic Direct Travel Electric Actuator
When the input signal I enters 1 = 4mA. DC position feedback I inversely = 4mA. DC, the amplifier has output, the servo motor stops running, and the output axis is set at zero position in the process. When the input has an input signal (I goes into 1 > 4 mA-DC, and the polarity is opposite to the position feedback current polarity), the input signal and the position feedback current of the system itself are compared comprehensively in the magnetic potential of the preamplifier of the servo amplifier, because the polarity of the two signals is opposite. If they are not equal, there will be error magnetic potential, so that the servo amplifier has enough output power to drive the servo motor. The output axis of the actuator is operated in the direction of reducing the error magnetic potential until the position feedback signal is equal to the input signal, and then the output axis is stabilized at the stroke position corresponding to the input signal.
Because the two-phase servo motor adopts double-lever braking structure and the input signal and position feedback signal reach the normal time, the servo amplifier can send a dynamic braking signal to make the two-phase servo motor stop running immediately, so as to prove that the servo motor can stop running quickly after power failure, thus improving the electric execution. The system stability of the mechanism can limit the inertia inertia of the output shaft of the electric actuator and overcome the influence of load reaction.
Installation and wiring of DKZ electronic direct stroke electric actuator
Servo amplifier should be installed at ambient temperature of 0-50 C, relative temperature of less than 85% non-corrosive gas environment, hanging wall type, its structure can be installed vertically on the metal skeleton or column.
The actuator should be installed in the environment with ambient temperature of - 25 ~+70 C and relative humidity of less than 95% non-corrosive gas. In general, the actuator is installed on the valve body of the control valve, fastened by screw, and of course can also be installed on other regulating mechanisms. The convenience of manual operation, maintenance and disassembly should be taken into account in installation. When installing, loosening clearance of all joints must be avoided. Limiting blocks should not be loosened and disassembled.
Bell solemnly promises that all products have passed all kinds of strict quality control operations and performance tests before they leave the factory, and will be guaranteed for one year under normal service conditions from now on. However, disasters that are not human-powered, damage by external forces, and dismantlement without the consent of the company are not included in the scope of warranty.
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