SD series angular stroke electric actuator

1、 OverviewSD series angular stroke electric actuatorIt is manufactured by our company using and absorbing technology from the French company Bernard. The SD series electric actuator is a terminal control device for industrial process measurement and control systems. It can convert the system's control signals (analog signals or intermittent signals) into mechanical displacements (angular displacement, multi angle displacement, or linear displacement), and output torque or thrust to control the opening of valves or other regulating mechanisms, so that the controlled medium works according to the system's specified state. Angular stroke electric actuators are used to drive valves with a 90 ° angle, such as butterfly valves, ball valves, louvers, dampers, plug valves, baffle valves, etc.SD series angular stroke electric actuatorSafe and reliable, with a wide variety of specifications, high precision, complete functions, light weight, easy installation, debugging, operation, and maintenance, it has reached the international level of the 1990s and has been widely used in industries such as energy, metallurgy, petroleum, light industry, chemical industry, building materials, etc. It plays an important role in industrial process detection and control systems.

2、 Product classification: SD series integral proportional adjustment type angular stroke electric actuator installation form can be divided into two categories: direct connection type - the actuator is directly connected to the regulating mechanism such as the valve through the flange at the output end. Base type - The actuator is installed on a base and connected to regulating mechanisms such as valves through output arms and levers. Integral proportional adjustment type - that is, the actuator and position positioning plate GamX are assembled into one and installed on site.

3、 The purpose and usage environment of the product

3.1 Purpose: The SD series electric actuator is a terminal control device in automatic adjustment systems. It receives 4-20mA (or 1-5V) analog signals and intermittent contact control signals from regulators or computers, outputs torque or force, and automatically operates the adjustment mechanism to complete adjustment tasks. It can also achieve "manual automatic" conversion through an electric operator. When switching to manual, the actuator can be remotely controlled using the operator.

3.2 Power Supply Voltage: Single phase 220V ± 10%~50HZ Three phase 380V ± 10%~50HZ

3.3 Environmental Temperature and Humidity Temperature: Integral -10~+55 ℃, Vertical -20~+70 ℃

3.4 Relative humidity: not greater than 85% 3.5 Medium: Non corrosive medium around the actuator.

4、 Main technical performance and parameters

4.1 Input signal: 4-20 mA DC

4.2 Input channel: Integrated type: 1 channel, Vertical type: 3 channels

4.3 Input resistance: 250 Ω

4.4 Basic error: not exceeding ± 2.5% of rated travel 1

4.5 Return difference: not exceeding ± 1.5% of rated travel

4.6 Time error of rated travel: not exceeding ± 20% of rated travel time

4.7 Dead zone: 3%

4.8 Damping characteristics: no oscillation, two and a half cycles

4.9 Insulation resistance: Under the conditions of ambient temperature of 10-35 ℃ and relative humidity not exceeding 85%, the insulation resistance between the input and output terminals and the ground shall not be less than 20M Ω, and the insulation resistance between the power terminal and the input terminal shall not be less than 50 M Ω.

4.10 Protection level: Complies with IEC145 IP65 (specified requirements, except for discrete GamX for indoor installation)

4.11 Work System: Intermittent work system, with a continuous rate of 50%. Note: The above technical performance mainly refers to proportional control electric actuators, and does not involve remote control and switch type items 1, 2, 3, 4, 5, and 6.

5、 Structural characteristics and working principle

5.1 Structural characteristics of the actuator The actuator is mainly composed of an electric motor (single-phase or three-phase), a reducer, a switch control box, a mechanical limit device, and a handwheel. 5.1.1 The electric motor is the power device of the actuator. This motor has good servo characteristics, namely high starting torque multiples, low starting current, and small moment of inertia. A temperature switch is installed inside the stator of the motor for overheating protection. When the motor experiences abnormal overheating, the switch will disconnect, which will control the circuit of the motor to be disconnected, thus protecting the motor and actuator from being burned out. After the motor cools down, the switch will be restored and the motor will resume operation.

5.1.2 The reducer generally consists of three stages of reduction (usually only two stages for multiple rotations). The first and second stages are driven by planetary gears with small volume, large transmission ratio, and high efficiency. Some reducers use helical gear transmission for the second stage, and the last stage is driven by worm gears, worms, or screw nuts with large reduction ratio and self-locking performance. The reducer of the angular travel actuator with a maximum torque of 600Nm has a two-stage planetary gear transmission at the high-speed stage and a worm gear transmission at the output stage. The high-speed stage of the multi turn actuator reducer is planetary gear transmission, and the output stage is helical gear transmission. The reducer of the angular travel actuator with a torque of not less than 1000Nm is composed of a multi turn actuator reducer matched with a worm gear and a worm gear reducer.

The internal structure of the circuit is as follows:

6、 Model specifications, external dimensions, and installation dimensions

6.1 Table of specifications, models, and labeling methods for angular stroke electric actuators

6.1 Model

7： External wiring diagram (please disconnect the power supply when wiring)

7.1 Overview: Non invasive is developed by our company based on digital products. It can receive switch signals (passive dry contacts, active 24V, active 220V, switchable jog hold) or analog signals (DC4-20mA, 0-10V, etc.) from controllers such as PLC in DCS systems, and can be directly driven or driven by contactors or solid-state relays to operate electric actuators. Output DC4-20mA feedback current and four relay contacts (open position, close position, remote control, fault alarm). This component integrates servo control unit, LCD display unit, knob operation and other units. This product is easy to operate and has complete protection functions, making it the best choice for you to redefine high quality and simple intelligence.

7.2 Operating Instructions

1. Knob operation instructions: The red knob is the mode button, which can be switched between on-site/stop/remote mode; Or save the menu in the set state (rotate from the stop position to the site) and exit it (rotate from the stop position to the remote). The black knob is an operation button that can be turned on or off in on-site mode, or adjusted in the set state. When operating the on-site knob, the short-term action is the on-site jog mode. When the effective action time of the knob exceeds 3 seconds, the alarm area displays "bc" to automatically enter the on-site hold mode. Reverse the operation knob or turn the mode knob to stop, that is, stop the action.

2. Remote control operation instructions (remote control is an optional accessory, please specify when ordering) Up - Open calibration key Down - Close calibration key Enter - Confirm/Save key Stop - Stop/Exit key Open - On site open key Close - On site close key When in on-site mode, press the "Open" key to perform the hold mode valve opening, press the "Close" key to perform the hold mode valve closing, and press the "Stop" key to stop. On site mode, press the "Up" button three times in a row to enter the open calibration state. The "Open", "Close", and "Stop" buttons can control the electric actuator to open, close, and stop. The "Enter" button is used to save the travel, and the "Stop" button is used to return. On site mode, press the "Down" button three times in a row to enter the off position calibration state. Other operations are the same as above.

7.3 Signal Inquiry (The signal inquiry area is located in the bottom left corner of the display screen) 1. Turn the remote control signal inquiry button to the remote position, and the received remote control signal will be displayed in the bottom left corner of the display screen. Switch type: OP represents remote opening; CL represents remote closure; BC represents remote holding (alternating display when multiple states coexist). Adjustable type: displays the received control current or voltage value.

2. Turn the valve position signal query button to the site, and the valve position signal will be displayed in the lower left corner of the screen. When the valve position is collected as a potentiometer, display the percentage of resistance value (d01-d99); When the valve position is collected using a 12 bit encoder, display the percentage of the encoder (b00~b99); When the valve position is collected using an 18 bit encoder, the thousandth ratio (000-999) of the encoder is displayed.

7.4 Travel calibration note: First, confirm that the steering and torque wiring of the electric actuator is correct, and adjust the rotation range of the potentiometer or encoder.

Turn the operation button to the off position for about 3 seconds until the letter L flashes, then release the operation button and turn the mode button to the field. At this point, L no longer flashes, indicating that the off position calibration state has been entered. The electric on or off action can be performed by operating the button. After adjusting to the off position, turn the mode button to stop and then turn back to the site. At this time, the red light and letter L flash twice, output 4mA feedback current, and display 0% to indicate that the off position calibration is completed. If the mode button is turned from stop to remote, it will directly exit the travel calibration. ten

2. Turn the operation button to the stop position for about 3 seconds. When the letter H flashes, release the operation button and turn the mode button to the field. At this point, if H no longer flashes, it indicates entering the open calibration state. The electric on or off action can be performed by operating the button. After adjusting to the on position, turn the mode button to stop and then turn back to the site. At this time, the green light and letter H flash twice, output 20mA feedback current, and display 100% to indicate that the off position calibration is completed. If the mode button is turned from stop to remote, it will directly exit the travel calibration. Note: When saving the travel, if there is a Fu or Fn alarm, please readjust the rotation range of the potentiometer or encoder and re label the travel.

7.5 Fine tuning of output current

1. Fine adjustment of 4mA output current: Rotate the operation button to the stop position until it is turned off for about 10 seconds. When the flashing display shows the letter LF, release the operation button and turn the mode button to the field before turning it back to stop, which enters the 4mA output current fine adjustment state. At this time, the output current can be adjusted by operating the button. After adjusting the output current to 4mA, turn the mode button to the site. At this time, the red light flashes three times to indicate that the 4mA output current fine-tuning is completed. If the mode button is turned from stop to remote, it will directly exit the output current fine-tuning state.

2. Turn the operation button to the stop position for 20mA output current fine-tuning until it is turned on for about 10 seconds. When the flashing display shows the letter HF, release the operation button and turn the mode button to the field before turning it back to stop, entering the 20mA output current fine-tuning state. At this time, the output current can be adjusted by operating the button. After adjusting the output current to 20mA, turn the mode button to the site. At this time, the green light flashes three times to indicate that the 20mA output current fine-tuning is completed. If the mode button is turned from stop to remote, it will directly exit the output current fine-tuning state.

7.6 Dead zone setting (this function is only applicable to adjustable types) The dead zone is self-adjusting, does not need to be set, and has higher accuracy without oscillation. 7.7 Advanced Settings Note: During advanced settings, the power must be turned off and the mode button should be in the stop position; The red light (off position light), green light (on position light), off position key, and on position key are on the circuit board.

1. The message loss action (only available for adjustable types, default setting - message loss protection position) menu item is moved to "CS" and the mode button is turned to the site and then rotated back and forth to stop (or press the "Enter" button on the remote control), entering the message loss action setting. At this time, the parameter values OP - message loss on, CL - message loss off, SP - message loss protection position are displayed in the lower left corner of the display screen. You can adjust the parameter values by operating the button or pressing the "Open" or "Close" button on the remote control. After adjustment, turn the mode button to the site and then rotate back and forth to stop (or press the "Enter" button on the remote control). At this time, CS flashes twice to indicate that the message loss action setting is complete and returns to the upper menu.

2. Control current calibration (only adjustable type has this setting) LS - Move the control low signal menu item to "LS" and then turn the mode button to the field to stop (or press the "Enter" key on the remote control), which enters the control low signal setting. At this time, the lower left corner of the display screen shows the received control current or voltage value. When the control signal changes, the parameter value synchronously changes. After adjustment, turn the mode button to the field to stop (or press the "Enter" key on the remote control). At this time, LS flashes twice to indicate that the control low signal setting is completed and returns to the upper menu. HS - Move the control high signal menu item to "HS" and then turn the mode button to the field before turning it back to stop (or press the "Enter" key on the remote control), which enters the control low signal setting. At this time, the lower left corner of the display screen shows the received control current or voltage value. When the control signal changes, the parameter value changes synchronously. After adjustment, turn the mode button to the field before turning it back to stop (or press the "Enter" key on the remote control). At this time, HS flashes twice to indicate that the control low signal setting is completed and returns to the upper menu.

3. Positive and Negative Action (only available for adjustable types, default setting - Positive Action). Move the menu item to "CF" and turn the mode button to the field before turning it back to stop (or press the "Enter" key on the remote control), which enters the direction setting for closing. At this time, the parameter values C - clockwise and A - counterclockwise are displayed in the lower left corner of the display screen. You can adjust the parameter values by operating the button or pressing the "Open" or "Close" keys on the remote control. After adjustment, turn the mode button to the field and then turn it back to stop (or press the "Enter" key on the remote control). At this time, CF flashes twice to indicate that the direction setting for closing is complete and you have returned to the upper menu. 4. CH - Two line control (default value - regular control, this setting is effective when on/off type). Move the menu item to "CH" and then turn the mode button to the site and then turn it back to stop (or press the "Enter" key on the remote control), which enters the two line control setting. At this time, the lower left corner of the display screen shows the parameter values OP - signal on/off, CL - signal off/off, SP - regular control. You can adjust the parameter values by operating the button or pressing the "Open" or "Close" keys on the remote control. After adjustment, turn the mode button to the site and then turn it back to stop (or press the "Enter" key on the remote control). At this time, CH flashes twice to indicate that the two line control setting is complete and returns to the upper menu.

7.8 Alarm Information Description (The alarm area is located in the bottom right corner of the display screen)

8、 Internal wiring diagram