Siemens 6SL3244-0BB12-1PA1 SINAMICS G120 CU240E-2 DP STO Control Unit

The Siemens 6SL3244-0BB12-1PA1 is a SINAMICS G120 CU240E-2 DP control unit with PROFIBUS DP communication and Safety Integrated STO. It provides 6 digital inputs (1 usable as a fast 2x DI Standard input), 2 digital outputs, 2 differential analog inputs and 2 analog outputs, plus a PTC/KTY motor temperature interface. It runs on a 20-29 V DC control supply, draws up to 0.5 A, and supports sensorless vector and encoderless torque control.

Technical Specifications

Selection Notes

The E-type CU240E-2 DP adds Safety Integrated STO to the base control unit, so it covers machines needing a safe stop function on the PROFIBUS network without a separate safety relay. Its 2 differential analog inputs and 2 analog outputs handle a process setpoint and actual-value loop directly on the control unit, without an added I/O module — useful where the drive replaces a simple closed-loop controller. Sensorless vector and encoderless torque control cover most pump, fan and conveyor loads; where speed accuracy matters at low frequency, an encoder-based vector variant is the alternative.

Applications

Fits G120 drive builds on PROFIBUS DP machines needing a basic hardwired safety stop plus analog process I/O — pumps, fans, conveyors and mixers in a PROFIBUS-based control architecture.