VLM21E-ALNC-00
by Kollmorgen
The Kollmorgen VLM21E-ALNC-00 servo motor from the VLM Brushless Motors series delivers a compact, high-performance solution for industrial automation. With a maximum mechanical speed of 6000 rpm and a rated speed of 3000 rpm, this brushless motor supports dynamic motion control in demanding environments. The motor produces a continuous power output of 0.14 kW at rated speed and peaks at 0.26 kW for short bursts, enabling both sustained and high-power operations. Featuring a maximum current draw of 2.99A, the VLM21E-ALNC-00 balances electrical demands with robust torque capability of 0.48 Nm. Weighing only 1.4 kg, this servo motor provides an excellent power-to-weight ratio for space- and weight-sensitive installations.
Detailed technical specifications define the VLM21E-ALNC-00's performance envelope with precision. The motor’s inertia (includes resolver feedback) is 0.429 kg-cm², ensuring rapid acceleration and deceleration cycles, while its static friction torque of only 0.008 N-m minimizes startup resistance. With 3 pole pairs, the electrical-to-mechanical speed relationship is optimized for smooth torque delivery across the operating range. Thermal management is addressed through a thermal resistance of 2.4 °C/W and a thermal time constant of 7.5 minutes, enabling reliable heat dissipation under continuous load. Viscous damping of 0.003 N-m/krpm further stabilizes the motor’s response, reducing overshoot and oscillations in closed-loop control.
Operational features emphasize performance, reliability, and responsiveness in precision automation tasks. The brushless design of this Servo Motor achieves low maintenance operation and extended service life, while the 0.48 Nm torque rating supports high-precision positioning and rapid repetitive motion. At peak output, the motor delivers 0.26 kW power for transient demands, automatically limiting current to 2.99A to safeguard against thermal overload. The low inertia value of 0.429 kg-cm² allows tight motion profiles and quick settling times, essential for multi-axis systems. Static friction and viscous damping parameters ensure smooth starts and stops, enhancing overall system accuracy and reducing mechanical wear.
Integration of the VLM21E-ALNC-00 into control systems is facilitated by standard resolver feedback and compatibility with common servo drives in industrial automation. This motor is ideal for applications in robotics, pick-and-place machinery, CNC tooling, and semiconductor handling where precision, speed, and compact form factor are critical. The combination of Kollmorgen engineering, brushless reliability, and the balanced specification set makes the VLM21E-ALNC-00 a versatile component for next-generation automation solutions.
