Lexium BRS Motors

Lexium BRS Motors

A stepper motor drive system consists of a stepper motor and the matching stepper drive. The 3-phase stepper motors from Schneider Electric are extremely robust, maintenance-free motors. They carry out precise step-by-step movements that are controlled by a stepper motor drive. Maximum power can only be obtained if motor and electronics are perfectly tuned to each other.

The 3-phase stepper motors can be operated at very high resolutions depending on the stepper motor drive

Options such as rotation monitoring and holding brake as well as robust, planetary gears with little backlash extend the application possibilities.

SD3/BRS3-series

Features

Quiet: As a result of the sine commutation and the special mechanical design of the motors, the stepper motors are very quiet and run virtually without resonance.

Strong: The optimised internal geometry of the motor ensures a high power density.

Flexible: With the flexible modular system and modern variant management, a wide variety of motor types can be manufactured and delivered in a very short time.

Specifications

Electrical and mechanical data

BRS motor type 368 397 39A 39B 3AC 3AD
Max. supply voltage VAC 230
Nominal voltage DC bus VDC 325
Nominal torque Nm 1.50 2 4 6 12 16.5
Holding torque Nm 1.70 2.26 4.52 6.78 13.5 19.7
Rotor inertia kgcm² 0.38 1.1 2.2 3.3 10.5 16
Number of steps 200 / 400 / 500 / 1000 / 2000 / 4000 / 5000 / 10000
Step angle ° 1.8 / 0.9 / 0.72 / 0.36 / 0.18 / 0.09 / 0.072 / 0.036
Systematic angle tolerance (1) arcmin ±6
Max. starting frequency kHz 8.5 5.3 4.7
Phase current Arms 0.9 1.75 2 2.25 4.1 4.75
Winding resistance Ω 25 6.5 5.8 6.5 1.8 1.9
Current rise time constant ms 4.6 ≈7 ≈9 ≈10 ≈22 ≈22
Mass (2) kg 2.0 2.1 3.2 4.3 8.2 11.2
Shaft load (3)
Max. radial force 1st shaft end (4) N 50 100 110 300
Max. radial force 2nd shaft end (optional) (4) N 25 50 150
Max. axial tensile force N 100 175 330
Max. axial force pressure N 8.4 30 60
Nominal bearing service life (5) L10h 20000 20000 20000
  1. Measured at 1000 steps/revolution.
  2. Mass of the motor version with cable gland and connector.
  3. Conditions for shaft load: speed of rotation 600 rpm, 100% duty cycle at nominal torque, ambient temperature 40 °C (bearing temperature ≈ 80 °C).
  4. Point of application of radial force: centre of shaft end.
  5. Operating hours with a probability of failure of 10%.

Documentation

Title Date Size
Lexium stepper drives and motors 2017 0.9 MB

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