6SL3210-1KE15-8UB2 is a SINAMICS G120C compact converter for variable-speed motor control. It combines the power stage, control functions, field I/O and serial communication in one frame-size AA device.

This exact UB2 variant is unfiltered, uses an external 24 V control supply and communicates through USS or Modbus RTU. It should not be confused with PROFINET, PROFIBUS or filtered G120C order variants.

• Controls induction-motor speed and torque using V/f or sensorless vector algorithms selected for the machine duty.
• Integrates basic field signals directly through the onboard digital, analog and temperature-monitoring interfaces.
• Provides Safe Torque Off as an embedded safety function for an appropriately engineered machine circuit.
• Connects to a serial automation network through the supported USS or Modbus RTU interface.
• Uses its internal fan to manage converter losses within the documented cabinet environment.

• Match the three-phase supply voltage, motor current and overload duty to the exact application before parameterization.
• Provide the required external 24 V control supply for this UB2 order variant.
• Do not specify this article when an integrated EMC filter or a different fieldbus interface is mandatory.
• Coordinate Safe Torque Off wiring with the machine risk assessment and the complete safety circuit.
• Check cabinet clearance, airflow, grounding and motor-cable requirements for the FSAA installation.

• Compact conveyors, pumps and fans requiring variable-speed control from a three-phase industrial supply.
• Standalone machines using Modbus RTU or USS for basic supervisory communication.
• OEM panels that can use onboard I/O without a separate drive-interface module.
• Motor installations that require integrated Safe Torque Off within the validated safety design.