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The DSBB170AM 57310256-FA is a bus branching unit (board) belonging to the S100 I/O system of ABB Advant OCS and MasterPiece 200/1 control platforms. This board is used for branching the S100 I/O bus from the controller subrack to the first I/O subrack or between multiple subracks, serving as the critical physical interface for bus communication extension.
S100 Bus Link Extension
Signal Synchronization Integrity
Standardized Ribbon Interconnect
This board provides the necessary electrical termination and signal amplification for the S100 I/O bus link, maintaining high-speed data synchronization across distributed hardware. It features ribbon cable connectors for direct bus interconnection and utilizes the +5V DC supply from the subrack backplane to power its internal logic and bus driver circuits.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
ABB DSBB170AM 57310256-FA Bus Back Plane Board Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Power Generation
Used in hydroelectric and thermal power plant control systems to extend the S100 I/O bus across multiple turbine control cabinets. It ensures synchronized data acquisition from remote sensors while maintaining bus signal integrity over distributed subracks.
Steel Industry
Facilitates high-speed communication in rolling mills and blast furnace control architectures. The unit branches the I/O bus to various processing zones, allowing the central processor to monitor distributed motor drives and hydraulic actuators.
Chemical Processing
Coordinates distributed I/O stations in large-scale refinery and petrochemical plants. It provides the physical bus link required to interface with remote subracks containing analog and digital modules for temperature and pressure monitoring.
Pulp and Paper
Supports the expansion of control systems in paper machine sections and stock preparation areas. The module enables the branching of the S100 I/O bus to handle high-density I/O requirements across long conveyor and processing lines.
Marine Propulsion
Integrates engine room monitoring and vessel management systems on large ships. It allows the S100 I/O bus to be distributed across separate equipment rooms, ensuring reliable signal transmission for propulsion control and auxiliary machinery.
Water Treatment
Manages extensive I/O networks in municipal water filtration and wastewater treatment facilities. By branching the communication bus to multiple I/O subracks, it enables centralized control of remote pumping stations and chemical dosing units.
The DSBB170AM 57310256-FA must be installed in a dedicated slot within the S100 I/O subrack, ensuring that the module's edge connector is fully seated to establish the physical link with the backplane logic and +5V DC power supply.
Before performing any installation or removal, it is mandatory to disconnect the system power to prevent potential damage to the bus driver components and ensure the stability of the S100 I/O bus communication. Proper handling procedures for electrostatic sensitive devices must be observed, as the board contains integrated circuits susceptible to ESD. All S100 bus ribbon cables must be correctly routed and firmly attached to the board's connectors, with locking mechanisms engaged to maintain signal continuity across the distributed I/O subracks.
What is the primary purpose of the DSBB170AM in a MasterPiece system?
It functions as the communication bridge that branches the internal S100 I/O bus to external subracks, allowing the processor to access remote I/O modules.
Does the ABB DSBB170AM require an external power supply?
No, the module draws its required +5V DC operating power directly from the subrack backplane through its edge connector.
How many S100 I/O buses can one DSBB170AM module handle?
The DSBB170AM is designed for a single-channel S100 I/O bus link, providing branching capability for one bus branch per unit.
What is the maximum operating temperature for the ABB DSBB170AM?
The module is rated for an ambient operating temperature range of 0 to +55 °C, provided there is adequate cooling within the equipment cabinet.
Can the ABB DSBB170AM be replaced while the system is powered?
While S100 I/O modules are designed for reliability, it is recommended to follow official safety procedures regarding bus communication to avoid disrupting the active I/O scan during replacement.
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