Siemens 6SL3120-2TE21-0AA4 Double Motor Module

The Siemens 6SL3120-2TE21-0AA4 SINAMICS Double Motor Module is a two-axis servo drive in the SINAMICS S120 family, engineered to control two motors with precise, synchronized motion in demanding industrial environments. It is commonly installed in CNC machines, machine tools, robotics, printing presses, packaging lines, and automated production equipment that require coordinated dual-axis control. Key specifications include 600 V DC Link input, approximately 9 A per axis output current, and a Servo / Vector Control approach for precise torque and speed regulation. The module uses Internal Air Cooling, interfaces on the SINAMICS Drive System Bus, and mounts in Booksize Format for integrated drive-system layouts. It carries IP20 protection and is rated for operating temperatures from 0 to 40°C, with factory-sealed condition ready for installation. This double motor module enables high-accuracy multi-axis motion with strong dynamic response and energy-efficient operation in synchronized two-axis applications. For retrofit or replacement, common compatible variants include Siemens 6SL3120-2TE21-8AA3, 6SL3120-1TE21-0AA4, and 6SL3120-2TE15-0AA3.