Technical data

1-2 Introduction MHD Sychronous motors

DOK-MOTOR*-MHD********-PR05-EN-P

• Use under adverse environmental conditions is possible (owing to the

completely closed motor design in IP 65 degree of protection

• Overload protection (owing to motor temperature monitoring)

• High performance data

• High dynamics (owing to the favorable ratio of torque to inertia mass)

• High overload capability (owing to the favorable heat dissipation from

the stator windings to the outside wall of the motor housing)

• Peak torque utilizable across a wide speed range (owing to electronic

commutation)

• Continuous start-stop operation possible with high repeat frequencies

(owing to electrical commutation)

• Easy attachment to the machine (owing to flange according to DIN

42948)

• Any installation position desired

• Direct overhung mounting of pinions and belt pulleys (owing to the

bearing being designed for high radial loads)

• Easy cabling (owing to cable sets, available in various designs)

• Simple and quick startup (owing to data memory in the motor encoder

unit)

MHD motors are permanent-magnet motors with electronic commutation.

Special magnet materials permit the motors to be designed with low

inertia masses. The following figure shows the principal design of MHD

motors.

MHD_schnitt.fh7

(1): Shaft

(2): Stator with winding

(3): Bearing

(4): Motor encoder

(5): Flange socket (power connection)

(6): Holding brake

(7): Shaft sealing ring

(8): Rotor with permanent magnets

Fig. 1-2: Design of MHD motors

MHD motors are available in various designs. Please refer to the chapter

on type codes for more detailed information.

Design and components