ABB Contrac RSD 20-5,0 사용 설명서 - 페이지 4

{카테고리_이름} ABB Contrac RSD 20-5,0에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. ABB Contrac RSD 20-5,0 18 페이지. Electrical linear actuators for continuous modulating control

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6. Assemblies

Fig. 1: Basic design of RSD ..

6.1 Standard operation

The motor (1) triggered by the power electronics controls the axially fixed drive sleeve /nut assembly

via oil-lubricated spur gears. A ball bearing screw (see Figure 2) radially fixed by an anti-twist arrester

converts the rotary motion to a linear one. The screw (2) is the upper part of the thrust rod (3) and has

an adjustable mechanical stop. The brake (4) built in the motor acts as a retainer when the power is off.

Fig. 2: Ball bearing screw with nut, sectional drawing

6.2 Handwheel mode

The handwheel (5) allows you to move the actuator manually when the electrical power is off. It acts on

the drive sleeve, via a spiral-toothed gear wheel and a transmission gear. In order to move the thrust

rod, press down the handwheel lock (6) and hold it down while your are turning the handwheel. This

does not disengage the motor.

6.2.1 Direction of action:

- Turning the handwheel clockwise extends the thrust rod (3).

The handwheel transmission ensures that at least the rated force can be generated!

(not

shown)