ABB BB150 just a base for I/O modules, the main function is to provides mechanical fixation, precise alignment, and electrical connectivity for communication modules, while integrating the backplane bus, power supply, ground, and signal pins to facilitate signal transmission between the modules and the system bus.

The BB150 cannot be used independently; it must be paired with various I/O modules.

Examples include the DSAI series, DSAO series, DSDI/DSDO series, etc. Typical models are listed below:

DSAI110: 32-channel standard analog input

DSAI130/130A: 16-channel analog input

DSAI133/133A: 32-channel isolated analog input

DSAI145: Universal analog input

DSAI146: 31-channel Pt100 RTD input

DSAI151: 14-channel 4-wire Pt100 RTD input

DSAI155/155A: 14-channel thermocouple input

DSAO110: 4-channel isolated analog output

DSAO120/120A: 8-channel analog output

DSAO130/130A: Multi-channel isolated analog output

DSDI110A/110AV1: 32-channel digital input (with filtering)

DSDI115A: 32-channel digital input

DSDI120A/120AV1, DSDI125: Universal digital input

DSDO110A, DSDO115: 32-channel digital output

DSDX180A: 32-channel universal digital I/O, supports redundant/non-redundant modes

DSDP150: 12-channel pulse counter input module

DSAX110/110A: Combined analog input + output module

External communication interface module CI856K01 (3BSE026055R1) and accompanying terminal units DSTA131, DSTA145