Year1
- 型号：
- SKD400/FYT
- 转矩：
- 4000NM
- 电压：
- 380V 50HZ
Product form and structural features
The actuator and the positioner are installed separately. The actuator is installed on site, and the positioner is installed at a suitable location nearby for easy operation.
The actuator is mainly composed of a motor, a reducer position sensor, a stroke limiting mechanism, etc.
Motivation
The motor is a three-phase AC servo motor with high starting torque multiple, low starting current and small moment of inertia.
Therefore, it has better servo characteristics. There is a servo motor inside the stator of the motor. The thermal switch is used to protect the motor from overheating. The switch is connected to the control circuit. When the motor overheats, the motor power is cut off to protect the motor and actuator. When the motor cools down, the switch is turned on and the circuit resumes operation.
Speed reducer
Reducers generally consist of stage reduction. The first stage adopts small size, large transmission ratio and efficient planetary gear reduction, the second stage adopts high-efficiency helical gear transmission, and the third stage adopts reduction ratio. It has a large, self-locking turbine and worm transmission mechanism, and the coupling is fixed on the output shaft of the reducer. Its installation diagram is shown in Figure 1.
Torque and stroke limiter
The torque stroke limiter is a standard unit, which consists of a torque limiting mechanism, a stroke limiting mechanism, a position sensor, and terminal blocks.
The stroke limiting mechanism controls the stroke of the actuator with the help of two (or four) cam plates, which act on the positive and negative micro switches respectively. The stroke adjustment is very convenient, just press down first with a screwdriver and then Rotate the cam plate to the required limit position.
Position locator
The position locator is essentially a multifunctional high-power amplifier that receives the analog signal from the adjustment unit or computer and compares it with the position feedback signal and then amplifies and outputs it to control the actuator. Accurate positioning as required.
In the circuit design of this positioner, it has a signal loss identification control circuit and an over-torque protection self-locking circuit. It also adds remote pulse switch input control and on-site manual strong current operation functions. It should be noted that the input signal and feedback signal have a common reference ground point.
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