Description

ABB DSBC176 3BSE019216R1 Bus Extender Board Product Description

Technical Specifications

• Product Model: DSBC176, Order No: 3BSE019216R1ABB Group
• Brand: ABB
• Warranty: One Year
• Input Voltage: 24 VDC supplied via rack backplane
• Operating Temperature: 0°C to +55°C
• Storage Temperature: -40°C to +70°C
• Response Time: ≤800 ns bus signal regeneration latency
• Protection Class: IP20 (cabinet rack‑mount installation)
• Accuracy Class: Industrial bus communication grade
• Output Frequency: Not applicable
• Rated Current Range: 0.32 A typical operating current
• Communication Interface: Dual 96‑pin S100 bus edge connectors, system backplane interface
• Supported Protocols: ABB proprietary S100 parallel backplane bus protocol
• Overload Capacity: Galvanic isolation, built‑in bus surge protection
• Dimensions: 324 mm × 234 mm × 22.5 mmABB Group

Product Overview

The ABB DSBC176 3BSE019216R1 is a rack‑mount bus extender board engineered for ABB Advant OCS and MasterPiece 200/1 DCS platforms, acting as a signal repeater to extend S100 I/O bus distances between main controller racks and remote I/O sub‑racks. This automation hardware regenerates and isolates bus signals, overcoming distance limitations of native S100 cabling for large‑scale distributed control layouts. It addresses typical legacy‑system pain points including signal attenuation, communication drop‑outs and limited physical layout flexibility. Facilities keeping original ABB DCS installations benefit from this spare component to avoid expensive full‑system upgrades. Plant maintenance staff, automation engineers and system integrators in power generation, pulp‑and‑paper and chemical sectors rely on this unit to expand I/O distribution while preserving system stability. (Word count:174)

Key Functions

S100 Bus Signal Regeneration & Distance Extension This board reshapes degraded bus signals to extend maximum S100 bus cabling length up to 12 metres for remote I/O sub‑racks. It restores signal integrity over long cable runs and eliminates data corruption caused by line attenuation. This function permits flexible physical cabinet arrangement across wide plant areas without modifying core controller firmware.

Galvanic Electrical Isolation Between Bus Segments Integrated galvanic isolation separates the main controller bus from remote I/O bus segments. It blocks ground loop noise and transient surges travelling along field cabling from reaching the central controller hardware. Isolation greatly lowers communication failures triggered by electrical interference in heavy‑industry environments.

Multi‑LED Real‑Time Bus Diagnostic Feedback Front‑panel LED indicators display bus power status, link activity and segment fault conditions. Maintenance crews can quickly identify bus segment failures, cable faults or remote‑rack power loss without complex diagnostic tools. Visible status feedback drastically cuts troubleshooting cycles and shortens unplanned production downtime.

Standard Eurocard Rack‑Compatible Installation Designed as single‑slot eurocard form factor, this unit fits directly into standard ABB DCS rack slots for fast plug‑in replacement. The industrial‑grade PCB construction tolerates cabinet vibration and normal temperature fluctuations. No custom adapters are required for retrofitting existing Advant‑series control cabinets.