SQX: 80 to 800 Nm (direct output) & up to 1,000,000 Nm (on request)

STX: 25 to 2,200 Nm (direct output) & up to 20,000 Nm (on request)

Conforms to international Ex standards: ATEX, INMETRO, IEC-Ex, EAC-Ex, NEMA 7 & 9 …

Control types:

electromechanical SWITCH

hardwired

intelligent INTELLI+® (v2)

SIL2

BC load classes and regulation levels:

switch A+

trimmer/positioning class B+

regulation class III

Environment: IP 68 / C3 to C5-M / Temperature: -20°C …+70°C (low temperature option: -60°C) Special configurations: corrosion-resistant housing & up to 20,000 Nm (on request) C)

Special configurations: corrosion-resistant housings, fireproofing, temperature limiting

Bernard electric actuator features:

1. Reliable operation: the drive can be self-locking at all speeds, continuous gear action from motor to valve, and gear lubrication is effective for life and does not require frequent maintenance, the main mechanical parts are well resistant to vibration, the motor has built-in overheating protection, torque protection, limit switch protection and other active protection functions. Protection function.

2、Auto-clutch handwheel: Patented manual operation system, Bernard electric actuator configured handwheel is auto clutch handwheel (SQ6-SQ15, ST6 has no such function), adopting differential gear transmission, no longer need to switch the clutch before the operation of the handwheel, and the valve can be operated manually by directly rotating the handwheel, which can be operated under all conditions, and can be easily operated timely in the case that the valve has particularly large torque. Easy to operate.

3、Motor working system: Most electric actuators use S2 motor working system, which can only be applied to constant load, i.e., the load does not change much, because the S2 motor can reach the limit of working temperature in a short time when it is running, and then it needs to be cooled down to a certain temperature before it can be used again. On the other hand, Bernard adopts S4 motor working system, which can output a large torque when starting, and the temperature drops slowly when running at the rated torque, and it can be started again in a short time after shutting down. Bernard electric actuator switching type uses S4-30% motor working system, 360 times/H under peak working condition, positioning type and regulating type use S4-50% motor working system, 1200 times/H under peak working condition.

4. Transmission system: Bernard electric actuator adopts turbine-worm gear + planetary gear transmission combination transmission mode, and self-locking turbine-worm can lock the valve position when the motor stops. The self-locking of turbine worm gear can lock the valve position when the motor stops, and the planetary gear can efficiently improve the overall transmission efficiency and greatly reduce the mechanical loss, so as to minimize the power consumption of motor and mechanical loss.

5. Position sensor: The position sensor of Bernard electric actuator adopts photoelectric absolute position encoder, which is the exclusive electric actuator manufacturer adopting this configuration. The coding format adopted is Gray code, and the position sensor changes from 1.5 turns to 904 turns, with large capacity and high resolution; it is not affected by electromagnetic interference during measurement, and has strong anti-interference ability; it is not affected by the operation of handwheel in case of power outage, and does not need backup battery support, and has high reliability.

6, torque measurement: through a dynamic balance dynamometer (coil spring) and the output shaft connection, because it is a mechanical connection, the measured data is more direct, high measurement accuracy, low long-term drift, good repeatability, short system response time.

7、Split installation: When the actuator is unavoidably installed in difficult to operate position, equipment with strong vibration, extremely high or low temperature occasions, Bernard can also provide users with split installation program, connecting the control meter head and actuator with cables, which can be used to carry out all operations in a safe location, the control meter head has been certified as explosion-proof and the maximum distance between the control meter head and the actuator is up to 50 meters.

8、Reliable protection design: Bernard electric actuator adopts double sealing protection with two O-ring seals to ensure that no dust or water vapor enters into the internal actuator, and the on-site control knob adopts reed switch, which can also effectively avoid water vapor from entering into the internal actuator, and the protection is still effective even in the case that the terminal box end cover is not covered tightly or the cable sealing connector is not screwed tightly. Moreover, Bernard can be equipped with optional electric heater, which can effectively prevent the circuit board from mold when the environment is humid.

9、User-friendly control interface: Bernard adopts intuitive and friendly user interface, graphic display and Chinese menu can let users understand the displayed information intuitively, and the display can be rotated by 90°, which can ensure that users can always watch the displayed information positively when using.

10、Bus control system: Bernard electric actuator adopts open field bus, which can be connected with most of the standard field buses commonly used in the market, such as Profibus, Modbus, FF and other required field buses, and it can be connected with many actuators and other equipments for communication of information and commands by only one twisted pair of wires, and in order to improve safety, the bus can be set into redundant structure, even in the case of a large number of actuators and other equipments. Moreover, in order to improve the safety, the bus can be set into redundant structure, even in some very important occasions, including the control master station can be made into redundant structure, up to 120 sets of actuators, and the longest distance reaches 10 kilometers.

 

Bernard electric actuator based on user consideration function:

Non-intrusive setting: the knob can be used to conveniently carry out parameter setting, information viewing, valve control and other operations without the need to use other equipment
Preventive maintenance: actuator action, valve torque curve, self-checking function, storage of data table can be viewed on the body display
Factory application protection: alarm indication, password protection
Motorized valve protection: motor overheating protection, torque protection, limit switches Protection: motor overheat protection, torque protection, limit switch protection
Support hard wiring: facilitate the user a small amount of demand for replacement or transformation, especially not the use of open bus occasions, directly to a single point wiring for the conventional way of operation
Dedicated protective cover: electric actuator display special protective cover, the bus communication if an actuator fails to need to go offline for maintenance, you can disconnect the communication module and the actuator to ensure that the entire bus communication is normal, by the dedicated protective cover, to ensure that the entire bus communication is normal. If an actuator fails during bus communication and needs to be repaired off-line, the communication module and the actuator can be disconnected to ensure that the whole bus communication is normal, and the communication module can be protected by the special protective cover.
Timer function: prolongs the operation time of the actuator to avoid phenomena such as water hammer, and the timer function can also be used for a certain part of the stroke.
Partial Stroke Test: Tests the round-trip operation of valves in a small range in order to check if some infrequently operated valves can be operated when needed.
Emergency Cut-Off Function: Remote emergency operation command with highest priority, exceeding protective limits. Emergency shut-off: A remote emergency operation command with the highest priority to exceed the protective limits in order to ensure that the valve can be opened or closed as commanded in case of emergency.