Motors of this series are designed for use in industrial drives and devices, where is required a continuous speed control. This can be obtained either by change of armature voltage or optionally by control of the excitation voltage - machining tools, printing machines, auxiliary drives on transport vehicles (fans, pumps).

This series is manufactured in four basic axial heights: 90, 112, 132, 160 mm. Sizes 112 and 132 are designed in two lengths of active iron, sizes 90 and 160 in three lengths.
Structural design of series of direct current machines allows high standardization of all components, preserving enormous amount of design variations. The production of this series complies with recommended sizes, mentioned in IEC 72 ČSN 35 0040.

The machines are four-poles, only exception is M 90, which is two-poles.
The motors can be powered even from controlled rectifiers.

Rotors of the machines are dynamically balanced with inserted half-key on the shaft extension and seated in radial ball bearings with permanent fat filling. 
The upper side of the machines is equipped with terminal box with sealed bushings. Bushings lead to the side opposing the shaft and the customer is allowed to change their direction according to his needs (terminal box allows to change the position by 90°). 

Fastening feet allow to secure the mechanical position of the machine while seated. All machines with mass over 30 kg are equipped with suspension screws to assure a safe suspension.

Vibrating of machines corresponds to category A. Machines with lower values of vibrating, in category B, can be delivered after agreement. 
Noise level follows the standards of class 1. Insulation of the machines is provided in the class F of heat resistance.

All machines comply with the standards IEC 34-1, ČSN EN 60034 and ST SEV 1346-78.

DC machines are equipped either with shunt or separate excitation. In case of a requirement of stable load characteristics (speed decreases while loaded) are these motor provided with stabilizing auxiliary series winding. Such cases occur for instance in the motors, that do not work with controller in a control loop. Engines powered from controlled rectifiers with a speed-control loop do not have any stabilizing winding.

On demand are the machines also manufactured with compound or series excitation.

Motors are designed for environment:

• ordinary (ambient temperature  -20 up to +40°C)
• tropical wet TH32 in protection IP23 (ambient. temperature -20 up to +40°C)
• tropical universal T23 in protection IP23 (ambient. temperature -20 up to +45°C)

Elevation - maximal 1000m, above 1000m the output is to be reduced.

Armature voltages can be chosen from the series 110, 160, 220, 270, 330, 400, 440 V, while voltages 110, 220 and 400 V are designed for powering by a smooth current, 160 and 270 V for powering from single phase rectifiers and voltages 330, 400 and 440 V for powering from three phase rectifiers.

While powering from controlled rectifiers with voltage ripple over 15% it is necessary to reduce the output (torque) by 15%.

Machines are designed for both directions of rotation. Unless stated otherwise, the motors are connected in a clock wise direction of rotation, which can be changed by connecting according to the scheme, which is placed in the terminal box.

Shapes of machines: IM1001, IM2001, IM3001, IM3011, IM3031, 
                               IM1002, IM2002, IM3002, IM3012, IM3032
Protection: IP23, IP44, after agreement also IP55.

Motors are manufactured in version MB, MF, MG, MO.

Speed control by change of armature voltage:

Speed control by a field weakening:
1 : 1,5 at constant output
1 : 2    at reduced output by 10%
Higher control range can be arranged after agreement.

Maximal speed given by mechanical strength of the rotor is 4 500 min^-1.

Detailed information you can find under the bookmark Documents for Download.