Product Description:

The ME2-405S-B-B2 is a brushless servo motor produced by Kollmorgen within the M Goldline Servo Motors series. Designed for closed-loop motion axes on packaging machines, pick-and-place gantries, and similar automation equipment, the unit converts electrical power from a matched drive into controlled rotary torque and velocity. Its integrated electromagnetic brake and high-resolution encoder allow the axis to hold position when power is removed and report the rotor angle to the controller for precise positioning.

At its rated operating point, the motor delivers 3.4 kW of mechanical power while turning at 2500 rpm. To maintain that speed against steady loads, it develops a continuous stall torque of 13.3 N-m and draws a continuous line current of 9.9 A RMS from the drive amplifier. The copper windings present 1.32 Ω of DC resistance and 33.5 mH of inductance, values that influence current ripple and heating during sinusoidal commutation. A torque constant of 1.34 N-m/A RMS links commanded phase current to output torque, allowing predictable closed-loop control. The windings are insulated for line-to-line voltages up to 250 V RMS. The optical encoder provides 2,048 lines per revolution for fine velocity and position feedback.

During rapid indexing, the drive may supply a peak current of 28.8 A RMS, enabling the rotor to generate up to 36.6 N-m of torque for short intervals. The low rotor inertia of 0.00441 kg-m² lets the axis accelerate quickly while keeping servo gains modest. A back-electromotive-force constant of 81.2 V RMS/krpm indicates the voltage returned to the drive during regeneration and helps with the selection of appropriate bus voltage limits. For vertical axes, the integrated brake provides 8.0 N-m of holding torque when de-energized. Its 90 VDC coil draws only 0.28 A when the brake is released, limiting power consumption during operation.