Siemens 6SL3244-0BB12-1FA0 SINAMICS G120 CU240E-2 PN Safety STO PROFINET VFD Control Unit

The Siemens 6SL3244-0BB12-1FA0 is a SINAMICS G120 CU240E-2 PN control unit with integrated Safety Integrated STO over PROFINET, 6 digital inputs, 3 digital outputs, and 2 analog inputs/outputs for pairing with a separate power module. It draws 24 V DC external supply at up to 0.50 A and dissipates 5.50 W.

Technical Specifications

Selection Notes

This is the E-type CU240E-2 PN control unit - the E designation adds sensorless vector control and encoderless torque control beyond the base V/f control found on lower CU240 variants - combined with PROFINET fieldbus and integrated Safety Integrated STO, so no external safety relay is needed to remove torque on an E-stop input. With only 6 DI, 3 DO, 2 AI, and 2 AO on board, it fits single-motor applications; multi-axis or high-I/O machines need additional distributed I/O rather than more DI/DO on this control unit. It ships without a power module and without an operator panel, so both must be ordered separately to build a working drive.

Applications

Pairs with a matching SINAMICS G120 power module to control a single motor over PROFINET, using onboard STO to remove torque for machine safety functions such as guard-door interlocks or E-stop circuits without a separate safety relay.