SD QUARTER TURN ELECTRIC ACTUATOR
SD non-invasive intelligent electric actuator
SD non-invasive intelligent electric actuator is the execution unit in industrial automation instruments. It receives signals from control computers such as regulators, PLCs, DCSs, and automatically completes the adjustment function. It is an indispensable main device in automatic control systems.
ADVANTAGES
7 MAJOR FUNCTIONS
No.1
With LCD display, it can display various symbols, numbers and characters on site for human-machine interface to perform parameter setting, debugging and fault diagnosis.
No.2
The phase sequence of the input three-phase power supply can be automatically corrected.
No.3
When a fault occurs, it stops at the original position and gives a fault status signal.
No.4
Operation data recording function: convenient parameter setting, no need to open the casing, the electric actuator can be set and operated locally through the hand operator.
No.5
It can output alarm contacts and display valve position.
No.6
It can provide status signals indicating fully open and fully closed positions.
No.7
When the negative cutoff exceeds the maximum control torque, the output opens and closes the travel direction of the torque overload state.
Local operation unit: The local magnetic button switch is completely isolated from the electrical box and can switch between local and remote control states to easily control and set the actuator.
Human-machine dialogue window: It displays the actuator's valve position, torque and functional status in Chinese/English, numbers, graphics, etc.
Motor: It has high starting torque, low moment of inertia, small starting current and good servo characteristics.
Powerful integrated circuit: Using fewer electronic components and complex electronic wiring, the electric actuator has a high degree of electronic control reliability. The absolute encoder has a set of acceleration gears connected to the actuator drive shaft, which can automatically set the stroke without micro switches.
Output shaft: The spline design allows the position of the output shaft to be adjusted arbitrarily according to the valve opening and closing degree and position, making operation easier.
The actuator uses an over-torque protection measurement mechanism. When the set torque range is exceeded, the actuator will be locked to output the signal in that direction, and the motor will stop rotating, thereby protecting the valve, the actuator's transmission parts and the motor. When the fault is eliminated, the actuator can resume normal operation by powering off or instantly reversing the signal.
Absolute encoder: Automatic travel setting without micro switches.
INSTALLATION METHOD
Convenient limit adjustment
Self-locking at all speeds
Continuous gear transmission between motor and valve
Main mechanical parts have good shock resistance
No regular maintenance required, gear lubrication is effective for life
High efficiency and low wear of gear system
High efficiency and low noise
Handwheel does not rotate during electric operation, manual and electric operation automatically switch
High transmission efficiency
The intelligent actuator effectively combines the high transmission efficiency of the worm drive and the planetary carrier to reduce the energy consumption of the motor. Tianjin Freya Automation Technology Co., Ltd.'s continuous research on materials, lubrication, self-locking devices (ensuring torque on the valve) and product design has fully developed the high efficiency of the worm drive, effectively ensuring high torque operation when the motor is underpowered.
The mechanical architecture of the actuators in all product series consists of direct mechanical transmission from handwheel to output (without worm drive), which helps to ensure high transmission efficiency from handwheel to output. All direct mechanical transmissions are equipped with self-locking devices, which can still be used for electrical control and manual devices even without any operation. The sensor is directly connected to the output shaft to ensure accurate position measurement. The mechanical design of our electric actuators optimizes the motor and handwheel transmission and can be self-locking at all speeds.
MOTOR FEATURES
The asynchronous motor used in the electric actuator has the highest theoretical starting rated torque ratio.
This design enables the actuator to cope with any operational difficulties and frequent starts.
Asynchronous motors have high starting torque
Motor overload protection
Motor overheat protection
Motor insulation grade F
TECHNICAL DATA
APPLICATIONS
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