The Siemens 6SL3243-0BB30-1PA2 is a SINAMICS G120 Control Unit CU230P-2 DP, marked as a spare part. It integrates a PROFIBUS DP interface and brings 6 digital inputs, 3 digital outputs, 4 analog inputs, 2 analog outputs, one motor temperature sensor input, two power-supply outputs (10 V DC and 24 V DC), one 24 V DC power-supply input, plus USB and MMC interfaces — all in an IP20 enclosure.
What the I/O complement means for a drive integration
With 6 DI and 3 DQ, this CU230P-2 DP handles basic start/stop, speed reference, and fault-reset logic without an external I/O block. The 4 AI and 2 AQ cover process feedback loops — pressure transmitter on AI1, valve position command on AQ1, for example. The motor temperature sensor input (typically a PTC or KTY84) lets the drive trip on overtemperature directly, bypassing the PLC scan cycle. The dual 10 V and 24 V power-supply outputs can serve an encoder or a remote sensor, reducing panel wiring.
Panel-fit and deployment context
The USB and MMC interfaces support commissioning via STARTER or Startdrive without a dedicated programming adapter; the MMC slot also holds the firmware version and parameter backup, so a swap-in replacement can be brought online without re-downloading the full set.