1. Summarizing 56% The newly RAⅢ range electric actuator offers many specially performances. The all actuator operational parameter setting is effected using the non-intrusively, hand held, infra-red setting tool. The torque, valve position, position limit setting and alarm information about actuator are displayed on the liquid crystal display with the way of Chinese, digital and graphics (see to figure 1-1), it can provides many conveniences to user during operating actuator. Available highly class of the watertight enclosure in actuator even if remove the terminal box cover in the field as long time while operating actuator. The actuator can structures the distributed control system with the fieldbus card for remote control , data transmission and maintenance. The RAⅢ range actuators are large-scale applied to the petrol industry, the power station, the metallurgy and the water treatment industries etc for the high reliability and flexibility.

2. Actuator specification

2.1 Input signals: 4mA～20mA;1VDC～5VDC; 2mA～10mA;0.5VDC～2.5VDC; 24VDC pulse or voltage signal;

2.2 Power supply: 380VAC/50Hz 220VAC/50Hz

2.3 Valve controlling error ≤±1%

2.4 Travel controlling mechanism repeatability error ≤3% handwheel clutch worm Wormgear Handwheel motor Limit trausducer motor Bevel gear 2.5 Dead zone: 0.1～9.9% of the total travel

2.6 Watertight enclosure: IP68

2.7 Anti explosive mark: ExdⅡCT4

2.8 Ambient temperature:-30℃～+70℃

2.9 Ambient humidity: ≤95%

3. Actuator features

3.1 Actuator working theory

3-1 RAⅢ electric actuator kinematic sketch The working theory of actuator is that the motor drives the worm and the gear to rotate, and then the gear drives the output shaft to rotate by the clutch. While the electric/hand level switch to hand position, the clutch is divorced from the gear and coupled with the handwheel and then the output shaft can be drove by the handwheel. Electric operation always has the higher priority than manual operation, when motor is energized that the operation state automatic switch Fig.

3-2 Double sealed to electric operation mode unless electric/hand lever is purposely locked into ‘manual operation. The valve position measure by a position sensor that is drove by the feedback shaft.

3.2 Function features

3.2.1 Double-sealed All RAⅢ actuators are housed double-sealed watertight enclosure to completely protect the internal equipment against the dust and the humidity even if the terminal box cover is removed as long time in the field. Refer to figure

3-2. The type of waterproof actuator can running 48 hours while the actuator immerge into water deep

3 meters, but does not mistake the actuator can running with long time that immerged into water. This feature just only provides a short time protection while happening the accident. In addition, user has the responsibility to ensure the sealed of the cable entry.

3.2.2 Non-intrusive design The RAⅢ electric actuator Non-intrusive design represents two parts. First, the operation knob employs magnetic induction mode switch to instead of the shaft penetrating the shell of the knob (see to figure 3-3 and Fig. 3-4). Second, the actuator operational parameter setting is effected by using the non-intrusively, hand held, infra-red setting tool. The non-intrusive design feature provides many excellences, such as avoid opening the electric cover in the field, debugging actuator in the rain or hazardous locations and quickly check the actuator state etc.

RAIII7A RAIII11A RAIII13A RAIII14A RAIII15A RAIII16A RAIII30A RAIII40A RAIII70A RAIII90A RAIII91A RAIII95A RAIII7A/RG4 RAIII7A/RG4R RAIII11ARG4 RAIII11ARG4R RAIII11A/RG5R RAIII13ARG4 RAIII11ARG5 RAIII14ARG5 RAIII13ARG4 RAIII14ARG5 RAIII15ARG5 RAIII16ATG5 RAIII14ARG6 RAIII14ARG7 RAIII30ARG7 RAIII7ARG4R RAIII11ARG4R RAIII13ARG4R RAIII14ARG5R RAIII15ARG5R RAIII16ARG5R RAIII14ARG6R RAIII15ARG6R RAIII16ARG6R RAIII14ARG7R RAIII15ARG7R RAIII16ARG7R RAIII14ARG8R RAIII15ARG8R RAIII16ARG8R RAIII30ARG8R

Display card for RA type actuator XSB-RA-02-NO.03-02.11.15 Display card for RA type actuator XSB-03.11.11-NO.04A