Tianjin Freya Automation Technology Co.,Ltd

Bernard Quarter Turn Electric Actuator OAP OA15 ASP

The model type , installation type ,output type, output torque ,voltage, control mode, matched valves and so on are selectable, in accordance with your specific information to offer you. we warmly welcome your inquiry. Specifications Cut-off signal protection Over-torque of two- way protecting function Auto switch function The pros and cons of swift Click the link for more information Quarter-turn electric actuator assemble with butterfly valve Quarter-turn electric actuator assemble with ball valve Quarter-turn electric actuator assemble with damper / gate valve Quarter-turn electric actuator assemble with louver/ blinds valve Linear electric actuator .SKD multi-turn electric actuator SD multi-trun electric actuator Electric actuator parts and accessories SD series electric actuator introduced Bernard technologyTransmission gears• The gear drive system is composed of 2 reduction stages:The first stage, driven directly by a pinion on the motor drive shaft, is a planetary system.The second stage, driven by the satellite wheels of the planetary gear consists of a worm and wheel gear type.•Since the planetary system permits a high speed reduction with an excellent efficiency, the subsequent gear is driven at a relatively low speed which ensures a better overall efficiency than normal standard gear designs.Position indicator• A visual position indicator allows a clear indication of the current valve position. In fact, this indicator is mechanically linked to the valve shaft.Travel limit switches• Thanks to the electric actuator camblock system, the adjustment of travel limit switches is simply accomplished with a standard screwdriver.No special tool is required.• Each single cam can be set independently from the others.• The cams are automatically locked in their respective positions, once adjusted, and unaffected by vibrations.Torque sensors• On the AS & BS models, the output torque for valve operation is permanently measured by the lever deflection of the planetary gear external crown.This crown gear is maintained in position by twocalibrated linear springs which can be set independently for each rotational direction to a desired torque value.• In the event the torque setting is reached, the crown lever compresses the spring to a point where a switch is tripped.• As this unique system is mechanically friction-free, exceptional precision and repeatability are obtained, which is highly appreciated when the device has to close on torque.Asynchronous motors• The asynchronous motor technology offers the highest ratio of starting torque versus nominal torque. Thus, the actuator maximum torque capacity is available from the beginning of travel to unseat the valve.Detachable drive bush• The output drive socket can be easily removed from the actuator, without the use of any special tool, for adaptation to the valve shaft.Motor thermal protection• A built-in motor thermal switch protects the motor from overheating.Lubrication• The gear design ensures lifetime lubrication by grease, thus reducing periodic maintenancerequirements considerably. Technical parameters1.The input signal: 4--20mA DC2.The input resistance: 250 ohm3.Input passage: 14.Basic error: 1 Percent, 2.5 Percent5.Deviation: 1.5 Percent6.Deadline: 0.5 Percent--3 Percent continuously adjustable(according to the indication of system)7.Damping characteristic: No-oscillating8.power supply: three-phase 380V~50Hz, single-phase 220V~50Hz for selected, other voltagec can be costomized.9.Working conditions: Temperature: Integral-type -10& 176C-- +55& 176C, separate-type -25& 176C -- +70& 176C Humidity: =85 PercentThe surrounding air does not have the corrosive elements 10.Protection grade: it conforms to the IEC145 IP65 standards. (Excluding the separate-type GAMX with waterproofing and dustproof functions fixed in rooms), bus type and i

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