ABB 57310001-KH DSBC173 Bus Repeater Slave Module

Product Description

The DSBC173 (57310001-KH) from ABB is a dedicated bus repeater slave module designed for extending and stabilizing communication on legacy ABB distributed control platforms. It plays a critical role in maintaining reliable data transmission across extended or segmented I/O bus architectures within Advant OCS and MasterPiece 200/200/1 systems.

This module operates by regenerating and reshaping bus signals between connected segments, allowing longer cable runs and improved noise immunity without compromising system determinism. It is commonly deployed in large-scale installations where bus loading, distance, or electrical interference would otherwise degrade communication quality.

Key Functional Overview

The DSBC173 (57310001-KH) functions as an intermediate bus node that electrically isolates and reinforces adjacent bus sections. By re-amplifying communication signals, it minimizes attenuation, timing distortion, and reflection issues that occur in complex or extended control networks.

Within ABB architectures, the module is most frequently associated with S100 and early S800 I/O expansion concepts, acting as a structural element rather than an application-level controller.

Technical Specifications

Electrical and Communication Characteristics

• Module function: Bus repeater slave

• Nominal supply voltage: 24 V DC

• Bus role: Signal regeneration and segment isolation

• Supported bus technologies:

• S100 I/O bus (native)

• Fieldbus compatibility references: CAN-based architectures

• Communication behavior: Transparent to higher-level controllers

Mechanical Characteristics

• Installation method: Rack-mounted within ABB Advant OCS / MasterPiece 200 systems

• Dimensions: 150 × 100 × 70 mm

• Weight: 0.43 kg

• Construction: Industrial-grade housing for control cabinet environments

Environmental Limits

• Operating temperature range: –20 °C to +55 °C

• Intended environment: Industrial control rooms and field cabinets

• Compliance note: Classified outside EU WEEE scope per ABB documentation

System Compatibility

The DSBC173 (57310001-KH) is engineered specifically for use with:

• ABB Advant OCS control systems

• MasterPiece 200 and 200/1 controller platforms

• S100 I/O bus extension and segmentation layouts

It is not a general-purpose fieldbus gateway and does not perform protocol conversion; its role is strictly physical and electrical bus enhancement.

Typical Application Scenarios

This module is commonly found in:

• Power generation control systems

• Petrochemical and refinery DCS installations

• Steel, metallurgy, and heavy manufacturing plants

• Water and wastewater treatment facilities

• Large distributed systems requiring long I/O bus distances

FAQ

What problem does DSBC173 solve in a control system?
It prevents signal degradation on long or heavily loaded I/O buses by regenerating and isolating bus segments.

Is DSBC173 a controller or communication processor?
No. It does not execute logic or manage protocols. It strictly supports physical bus integrity.

Can it be used as a drop-in replacement for other ABB bus repeaters?
Only within compatible Advant OCS or MasterPiece 200 architectures. Functional equivalence depends on bus topology and system revision.