ESZ - Electro-Servo-Cylinder - EMG Elektro Mechanik - #1

EMG Automation GmbH

Industriestraße 1

57482 Wenden / Germany

+49 (0) 27 62 / 6 12-0

+49 (0) 27 62 / 6 12-3 84

www.emg-automation.com

servo@emg-automation.com

Unternehmensgruppe

Telefon: Telefax: Internet: E-Mail:

The electric servo cylinder is preferably used for

adjusting steering frames.

Disadvantages connected with hydraulic systems

(oil, leakage, etc.) are avoided.

The electric servo cylinder is also suitable for other

applications where a load is moved or positioned,

adequate dimensioning provided.

Functional description

The electric servo cylinder is an electromechanical linear drive. It comprises the following main components:

• electric motor (standard: three-phase A.C. asynchronous motor)

• spindle converter PGT (planetary gear) with piston rod

• housing block with bearing, safety clutch, trunnion

• housing made from extruded aluminium, including grease lubrication

• end position cushioning (Belleville springs)

• optional extras:

■ holding brake

■ adjustable limit switches

■ position transducers (digital or analogous)

■ separate fan

The electric motor which is activated by a vector-controlled frequency converter (FC) drives the spindle. In the spindle converter, the rotation of the spindle is converted into a linear movement. The speed of the piston rod is proportional to the effective pitch of the PGT planetary gear and the speed of the electric motor. With an analogous input voltage on the vector-controlled frequency converter, the ESZ electric servo cylinder can be continuously controlled with respect to force and direction, like a hydraulic cylinder with servo valve. The safety clutch between the electric motor and the spindle prevents the ESZ electric servo cylinder in any stroke position from being overloaded.

Mains _i supply

Block diagram

Messages

3phase A.C. motor Brake resistance

Erstelldatum 16/03/2004 Erstellt von Sol Dateiname: KDB_ESZ_GB.doc Dokumentennummer Bezeichnung:

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