1SBP260150R1001 is a CPU base unit and communication adapter module belonging to ABB S500 I/O series, compatible with Advant Controller 31 PLC platform. It works as the bridge between main controller and S500 remote/local I/O rack, adopting standard DIN rail mounting design for cabinet installation together with all types of S500 digital and analog modules. New original stock and fully tested refurbished units are available for automation system renovation and spare part replacement on industrial sites.

1SBP is fixed uniform part prefix for ABB S500 standard I/O spare coding rule. 260150 represents base hardware model of S500 rack bus coupler module. Suffix R1001 means factory standard hardware revision and default factory configuration. Other variant suffix codes only modify partial component versions without changing overall dimension, backplane definition and communication specification.

The module receives working power from system 24VDC power source via backplane bus. It provides dedicated internal bus communication channel to link main controller with S500 I/O modules, supporting specified rack data transmission rate. Galvanic isolation is arranged between external control side and internal I/O bus circuit with isolation withstand voltage up to 2500VAC. Operating ambient temperature ranges from -20℃ to +60℃, storage temperature -40℃~+85℃, working relative humidity 5%~95% under non-condensing environment. Protection grade reaches IP20 and the product complies with IEC and UL industrial safety certification standards.

Rear gold-plated edge connector is plugged into S500 backplane to establish bus connection with all I/O modules inside the same rack. Front terminal and dedicated communication port connect to Advant main CPU via proprietary controller link cable. No optional external fieldbus expansion port is equipped under standard configuration, all data exchange between CPU and distributed I/O relies on this coupler’s built-in bus protocol.

Realize data forwarding and protocol conversion between Advant master CPU and S500 rack I/O modules, collect all channel input data from local I/O modules and transmit to main controller, meanwhile distribute control commands issued by CPU to corresponding digital and analog output modules. Conduct periodic self-check of backplane bus communication status and upload communication failure or rack abnormal alarm information to upper CPU once breakdown occurs.

It is installed as core rack coupling component inside control cabinets of papermaking production line, metallurgical rolling process, chemical continuous production and municipal water treatment automation projects, functioning as intermediate communication hub for AC31 PLC and matched S500 series I/O system.

Disconnect overall cabinet AC and DC power supply and wait no less than 10 minutes for residual electric discharge before module pulling out or communication cable modification. Complete semi-annual maintenance by cleaning accumulated dust on module surface and wiring terminals with dry low-pressure compressed air and retighten terminal and connector fixing screws. In case of total rack I/O communication interruption without main controller failure, inspect connection cable and this bus coupler condition before replacement. Avoid overvoltage misconnection on wiring terminals to prevent internal communication chip burnout.