Description

ABB Advant Master -S100 I_O System PDF

The ABB DSBC176 (3BSE019216R1) is a bus extender board for the ABB S100 I/O system. Classified as a communication module, it functions as a bus-extension slave in an S100 I/O rack, providing the interface needed to extend the I/O bus between the controller section and connected I/O subracks. In the documented rack configuration, the board occupies the last position of an S100 I/O rack.

The DSBC176 has net dimensions of 324 × 234 × 22.5 mm and a net weight of 0.4 kg. It is used in ABB control-system architectures that incorporate S100 I/O, including documented AC 800M configurations using the CI856 interface. Installation requirements depend on the bus-extension arrangement, controller hardware, cable configuration, and termination. The complete order number should be checked when identifying a replacement or selecting a compatible connection kit.

Parameter	Specification
Manufacturer	ABB
Model	DSBC176
ABB type designation	DSBC 176
Order number	3BSE019216R1
Product type	Communication module
Product function	S100 I/O bus extender board
I/O system	ABB S100 I/O
Bus-extension role	Slave board
Rack installation position	Last position of an S100 I/O rack
AC 800M interface context	CI856-based S100 I/O configuration
Net dimensions (L × W × H)	324 × 234 × 22.5 mm
Net weight	0.4 kg
Associated connection kits	3BSE019956R1, 3BSE019957R1, 3BSE019958R1
Related termination unit	DSTC176

ABB Advant Master -S100 I_O System

ABB Advant Master -S100 I_O System

Detailed Product Overview

Product Identity and Function

The ABB DSBC176, order number 3BSE019216R1, is a bus extender board designed for the S100 I/O system. Unlike an analog input or output board, it does not directly acquire process measurements or generate analog control signals. Its role is to support the extension of the system’s internal I/O bus between controller hardware and I/O subracks.

In an S100 I/O installation, the controller must exchange data with the I/O hardware that serves the process. When the installation uses a bus-extension arrangement, the DSBC176 operates as a slave board within that arrangement. This allows the relevant I/O subrack to participate in the extended bus structure.

Rack Position and System Integration

The DSBC176 is installed in the last position of an S100 I/O rack in the documented bus-extension architecture. This location is important because the board is part of the rack’s communication path, rather than a general-purpose module that can be placed in any available I/O slot.

The DSBC176 is documented for use with ABB control-system configurations that incorporate S100 I/O. In AC 800M installations, the CI856 serves as the S100 I/O communication interface. Other system arrangements have their own controller and bus-extension requirements, so compatibility must be assessed against the actual hardware configuration.

The board’s function depends on the surrounding equipment. The controller-side bus interface, I/O subrack, extension cables, board addressing, and termination must be configured as a coordinated system. Installing the correct board alone does not establish that the entire bus-extension arrangement is complete.

Cable Configuration and Termination

Bus-extension installation requires attention to the type and routing of the extension cables. In the documented electrical S100 I/O bus-extension arrangement for the Advant Controller 450, the total extension-cable length must not exceed 12 m. This is a system-level installation constraint; it should not be applied indiscriminately to optical bus-extension arrangements.

The same electrical installation guidance specifies that the DSTC176 termination unit must be positioned only at the final bus-extender slave board in the chain. Cable routing also matters because extension cables can be susceptible to interference from nearby wiring.

Consequently, engineers evaluating a DSBC176 replacement should check more than the board designation. The installed bus-extension type, cable lengths, termination location, and rack arrangement must remain consistent with the applicable system design.

ABB Advant Master -S100 I_O System

Product Documentation Reference

Document: ABB Advant Controller / S100 I/O System
Document number: 3BSE004616R0201
Revision: A
Year: 2019

Documentation Notice

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