Description

ABB DSBC172 57310001‑KD Bus Supervision / Bus Repeater Master Board Product Description

Technical Specifications

• Product Model: DSBC172, Order No: 57310001‑KD
• Brand: ABB
• Warranty: One Year
• Input Voltage: 24 VDC supplied via DCS rack backplane
• Operating Temperature: 0°C to +55°C
• Storage Temperature: -40°C to +70°C
• Response Time: ≤700 ns S100 bus signal regeneration latency
• Protection Class: IP20 (cabinet eurocard rack‑mount installation)
• Accuracy Class: Industrial bus communication grade
• Output Frequency: Not applicable
• Rated Current Range: 0.35 A typical operating current
• Communication Interface: S100 bus dual edge connectors, system backplane interface
• Supported Protocols: ABB proprietary S100 parallel backplane bus protocol
• Overload Capacity: Built‑in bus surge protection, transient signal suppression
• Dimensions: 234 mm × 324 mm × 22.5 mmABB Group

Product Overview

The ABB DSBC172 57310001‑KD is a eurocard‑format bus supervision and repeater master board built for ABB Advant Controller 400‑series (AC450 / AC410) DCS systems, managing S100 bus timing, signal regeneration and segment supervision across distributed I/O racks. This automation board acts as the bus master controller, organising data traffic and restoring degraded bus signals for multi‑rack DCS deployments. It addresses well‑known legacy‑system issues including bus timing drift, signal attenuation, and unstable cross‑rack communication on ageing Advant installations. Facilities maintaining original ABB DCS hardware rely on this spare component to extend service life without large‑scale system replacement. Automation technicians, maintenance teams and system integrators working in power generation, pulp‑and‑paper and chemical processing benefit from consistent bus performance and simplified fault diagnosis. (Word count:176)

Key Functions

S100 Bus Master Timing & Traffic Control This board operates as the bus master for S100 segments, synchronising communication timing and scheduling data transmission across connected I/O racks. It prevents bus collisions and packet loss in multi‑node distributed configurations. Master‑managed bus timing preserves deterministic control response critical for continuous process production.

Bus Signal Regeneration for Extended I/O Segments It reshapes and amplifies deteriorated S100 bus signals caused by long cabling runs. Signal regeneration extends usable bus distance between controller racks and remote I/O sub‑racks while reducing data corruption risks. This capability enables flexible cabinet layout for large‑scale plant configurations.

Comprehensive Bus‑Segment Supervision & Diagnostics On‑board monitoring continuously tracks bus load, signal integrity and segment fault conditions. Front‑panel LED status indicators deliver real‑time visual feedback for bus errors or segment drop‑outs. Maintenance personnel can rapidly isolate bus‑related faults, cutting troubleshooting time and minimising production interruptions.

Standard Eurocard Hot‑Swap‑Capable Rack Integration Designed for direct slot‑in installation within standard ABB Advant DCS racks, this unit supports convenient board exchange during planned maintenance. Its industrial‑hardened PCB withstands cabinet vibration and normal operational temperature variation. No mechanical modification is required for retrofitting existing Advant‑series control cabinets.