Linear-turn Electric Actuator
The electric actuator is one of the executive unit products in the electric unit combination instrument. The actuator and the control valve body constitute the electric control valve, which is the executive regulating mechanism in the industrial process measurement and control system. It can be widely used in various industries such as petroleum, chemical industry, water treatment, shipbuilding, papermaking, power station, heating, building automation, light industry, etc. It uses 220V (110V, 380V) AC power supply and 24V DC power supply as the driving power supply, and 4-20mA current signal or 0-10V DC voltage signal as the control signal. It can move the valve to the desired position and realize its automatic control. The maximum output torque is 25000N.
Technical data
A variety of working modes are available, flexible and convenient;
Control signal: current signal (4~20mA or other non-standard signals)
Voltage signal (0-10V or other non-standard signals)
Positive and negative action can be selected, and the split-range control mode can be easily realized.
Output signal: current signal (4~20mA or other non-standard signals)
Voltage signal (0-10V or other non-standard signals)
Communication interface: RS485;
Flow characteristics: linear, fast opening, slow opening, custom
Valve action direction: positive and negative action selection
Chinese and English LCD display: menu operation, human-computer interaction is more humanized; easier to use;
Stroke self-tuning: innovative mechanical design, simple and fast stroke position adjustment, input signal and stroke relationship adaptive tuning, to meet the needs of different stroke valves;
Self-diagnosis function: the actuator automatically records the working parameters during operation. When the actuator fails, the main control module will detect and alarm in time, the fault will be displayed on the LCD screen, and transmitted to the control center through the switch signal.
Easier operation: innovative structural design, non-invasive operation, easy to operate without opening the casing.
Remote control/local control button switch. Handwheel priority mode, once ejected, automatically protects the actuator, manual operation is easier, and the handwheel is safe and reliable.
More reliable control circuit: The motor drive adopts contactless control, no sparks, and long life; wide power supply adaptation range, 380V power model phase adaptation, users do not need to worry about wrong phase connection; circuit module is fully digitally controlled, without the existence of mechanical potentiometers, users do not need to worry about the impact of mechanical vibration and transportation on product accuracy; using advanced anti-interference technology, even in harsh environments, it can calmly cope with it;
Delay protection for the reversal of the actuator movement direction, longer life of the power transmission components;
Lower working noise.
1. Power supply: single-phase AC 110V 50Hz/60Hz single-phase AC 220V 50Hz/60Hz three-phase AC 380V 50Hz/60Hz DC 24V
2. Input signal: current signal (4~20mA or other non-standard signal), input impedance 250Ω voltage signal (0-10V or other non-standard signal), input impedance>50KΩ
3. Output signal: current signal (4~20mA or other non-standard signal), load impedance maximum 750Ω voltage signal (0-10V or other non-standard signal), load impedance>10KΩ
4. Communication interface: RS485 modbus protocol;
5. Resolution: minimum 1/1,000, circuit A/D converter 12 bits
6. Control accuracy: ±0.5%~±1.5% (may vary with installation conditions, as a percentage of rated stroke) )
7. Return difference adjustment: 0.1%~5.0%
8. Ambient temperature: -10°C~60°C (special instructions are required if the temperature is lower than -20°C~-45°C)
9. Insulation strength: 1500V AC 1 minute (input to output, power supply to ground)
This actuator is mainly composed of the following parts:
●Controller: receives DC4~ 20mA or DC1~5V signal from the regulator and controls the actuator to work in a predetermined mode.
●Transmission mechanism: converts the rotary motion of the motor into the linear reciprocating motion of the power output shaft to realize the switch and adjustment function of the regulating valve.
●Opening detection mechanism: feeds back the linear motion displacement of the output shaft (the opening of the valve core) to the potentiometer through the rack and gear, which is converted into an electrical signal by the potentiometer and then fed back to the controller. When the difference between the input signal from the regulator and the opening signal of the valve core is zero, the motor will stop working.
●Coupling mechanism: connect the actuator and the controlled valve through the bracket, and connect the actuator output shaft and the valve stem by the opening and closing nut. The opening and closing nut has a pointer and the bracket has a scale to indicate the displacement of the output shaft (or valve stem).
Features
1 The adjustment stroke can be set arbitrarily within the full stroke range of the valve machinery, including the direction of valve opening and closing;
2 The speed can be adjusted arbitrarily within 20%-100% of the allowable speed range of the actuator;
3 Input signal and feedback signal can be combined arbitrarily, for example: input 4-20mA feedback M-BUS or 0-10V;
4 Provides 3 levels of thrust optional;
5 Anti-jamming settings are provided for special working conditions, such as tar medium working conditions;
6 Provide heat tracing setting, which can be turned on when the temperature is lower than -20°C to keep the motor and circuit board at a certain temperature;
7. Zero compensation function is optional.
Stroke: 100mm (more than 100 strokes can be customized)
Working voltage: AC380\AC220\AC24\DC24
Other voltages can be customized
Running speed: 20%-100% adjustable
Power: 60W
Thrust selection: Three thrust modes are provided for users to choose. Thrust mode 2 is standard thrust, the thrust mode is about 10% smaller, and thrust mode 3 is about 10% larger.
Control/feedback signal: 4-20mA, 0-10V, MODUS, switch value (valve switch position feedback fault feedback signal is optional) control and feedback signals can also be different types of signals
Control accuracy: ±0.05%, 0-10V signal 1%
Reset function: Power-off and off-signal hold position (off-signal reset is optional)
Adjustment characteristics: linear (equal ratio optional)
Stroke Calibration: Two modes of automatic calibration and manual calibration are provided. It can be automatically calibrated when the mechanical limit is set, During manual calibration, it can be set within the full range of the mechanical limit.
Status display: control mode, thrust mode, zero position, operating parameters, off signal, signal overcurrent and overvoltage, etc.
Protection class: IP65 (IP67 optional)
Adjustment position: valve position mechanical indication, display display
Manual function: no need to switch, direct operation of the mechanical handwheel when the power is off, and button operation when the power is on.
Fault alarm: comprehensive fault alarm signal, indicator light alarm indication.
Torque protection: Realized by controlling the output power of the motor, without using switches to reduce the failure rate.
Remote control function: infrared remote control (optional)
Electrical interface: Standard configuration is suitable for 2 8-12mm cable interfaces, other interfaces can be customized, and 3 interfaces can be provided.
certificate
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