ABB RSD Series, Руководство по эксплуатации, Страница: 20 / 32

Operation
20 RSD10 ... 200 (Contrac) 42/68-285-EN
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5 Operation
Pos: 12.2 /Überschriften/1.1/1-spaltig/A - C/Automatik / Handbetrieb @ 10\mod_1181715570281_3101.doc @ 104973
5.1 Automatic / manual mode
Pos: 12.3 /Bedienung/Aktorik/Antriebe/Linearantriebe/Allgemein/Automatik / Handbetrieb @ 10\mod_1181805435734_3101.doc @ 105927
The motor triggered by the power electronics controls the axially fixed drive sleeve /nut
assembly via oil-lubricated spur gears. A ball bearing screw (see Figure Fig. 10) radially fixed by
an anti-twist arrester converts the rotary motion to a linear one. The screw is the upper part of
the thrust rod and has an adjustable mechanical stop.
A position sensor detects backlash-free the thrust rod position via mechanical reduction
gearing.
The motor brake locks the actuator in the current position if the power supply is cut off.
Pos: 12.4 /Bedienung/Aktorik/Antriebe/Linearantriebe/Allgemein/Schnittbild durch Kugelmutter mit Spindel @ 10\mod_1181900287234_3101.doc @ 106607
M00308
Fig. 10: Ball bearing screw with nut, cross-section
Pos: 12.5 /Bedienung/Aktorik/Antriebe/Linearantriebe/RSD10...200/Handradbetrieb @ 18\mod_1204012641000_3101.doc @ 165074
Manual mode allows you to move the actuator manually when the electrical power is off.
Caution - Risk of injury!
When pressing the hand wheel lock, restoring force from the valve may be present in the hand
wheel.
To prevent the hand wheel from turning unintentionally, hold the hand wheel with one hand.
1. Press the hand wheel lock.
Important
Turning the hand wheel to the right causes the thrust rod to extend.
2. Turn the hand wheel to move the part-turn actuator to the desired position.
3. Release the lock.
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