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Electric Actuator

product-491-470

The main performance of the control system of the BST intelligent electric actuator

Photoelectric absolute encoder

High precision and high reliability intelligent electric actuator adopts photoelectric absolute encoder developed by itself. Due to the organic combination of mechanical measurement and computer data processing, the data stability is good, the precision is high, the measurement surface is non-contact, and the use of long life. The photoelectric absolute encoder does not need batteries to save the set origin or data, which greatly improves the reliability of the system, is convenient for users, and saves costs.

Position measurement photoelectric absolute encoder

The structure of the photoelectric absolute encoder for position measurement is shown in the schematic diagram. Three encoder discs are installed on the main output shaft of the actuator. The maximum number of encoding turns is 914, and the number of encoding digits is 15.

Torque measurement photoelectric absolute encoder

The structure of the photoelectric absolute encoder for torque measurement is shown in the schematic diagram. The encoder plate is connected to the torque measurement spring, which directly reflects the displacement of the spring, and the actual torque is calculated by the computer. The measurement of the torque value is dynamic measurement, and the maximum torque limit value is set according to the user's requirements before leaving the factory. The number of bits of the encoder is 5 bits.

Central microprocessor

Programmable microprocessor

The application of programmable microprocessor makes operation and control more convenient and accurate, and ensures that various parameters of the valve and actuator, such as valve position, torque, fault status, etc., are always under the user's monitoring. During maintenance, the user can also obtain various changed parameters to determine the fault poi Huge storage capacity The large-capacity EEPROM memory can ensure the use of all parameter settings, data processing, data acquisition, etc., and can also record the latest full-stroke valve torque curve for reference when maintaining the valve. The memory does not require battery backup to save data.

Control system input and output

A variety of communication methods The remote control of intelligent electric actuators is compatible with ordinary actuators, and can be connected to the central control room through multi-wire connection, fieldbus (additional module), 4~20mA (additional module), etc. The control panel on the mechanism performs local operation, or directly controls the actuator through a hand-held controller and a laptop computer (infrared communication components are required).

Parameter setting and diagnostics without tools and without opening the case

Even in flammable and explosive environments, the actuator can be set through the local knob and LCD window without any tools and without opening the case.

Automatic setting

The actuator is calibrated and set according to the user's ordering requirements when it leaves the factory. In principle, the user only needs to set the fully open and fully closed positions after receiving the product. In some applications, such as gate valves, intelligent actuators can automatically set fully open and fully closed positions, and even optimize the final setting based on the measured inertia.

Multi-risk control method

When using the multi-wire control method, the user can input a control voltage of 10-250V (both AC and DC), or use a dry contact (the 24DC provided by the actuator itself should be used at this time) to realize the intelligent electric actuator. Remote control command input.

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product-376-118