Product Overview
The ABB 442-2181111100 is an S100 I/O bus extension module designed for the ABB Advant Controller 400 Series, including the Advant Controller 410, Advant Controller 450, and the AC 460 / MOD 300 platform . Its primary function is to extend the S100 I/O parallel backplane bus, allowing the controller to communicate with I/O boards located in remote subracks outside the main controller cabinet . Without the ABB 442-2181111100, all I/O boards would need to reside in the same physical rack as the CPU. With this module, subracks can be distributed across adjacent cubicles or even in a marshalling room up to 12 meters away using a copper bus extension cable, or up to 500 meters using optical bus extension modems .
The ABB 442-2181111100 is a purely physical-layer device. It regenerates bus clock and data lines, suppresses reflections and noise that would otherwise corrupt transfers over long cable runs, and presents the remote subrack to the controller as if it were local — no software configuration or address remapping is required . This transparent operation makes the ABB 442-2181111100 a drop-in solution for expanding an existing Advant Master or Advant OCS system.
What gives the ABB 442-2181111100 its high practical importance is that S100 I/O is a discontinued, installed-base platform. Thousands of power, chemical, pulp, and metal plants still depend on this architecture. The bus extension module is one of the few items whose failure removes an entire remote I/O rack from service instantly. Holding a verified unit like the ABB 442-2181111100 is therefore a direct uptime measure rather than a routine stocking decision .
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | ABB 442-2181111100 |
| Manufacturer | ABB |
| Product Type | S100 I/O Bus Extension Module (Communication Module) |
| Catalog Description | S100 I/O Bus Extension |
| Product Family | ABB Advant Master / Advant OCS, S100 I/O system |
| Compatible Controllers | Advant Controller 400 Series – AC 410, AC 450, AC 460 (MOD 300) |
| Bus Type | I/O parallel ModuleBus, backplane synchronous clock |
| Maximum Bus Extension Distance | 12 m with copper bus extension cable; up to 500 m with optical bus extension modems |
| Redundancy Support | Single or redundant bus extension cable configuration supported |
| Subracks per Controller | Up to five I/O subracks via single or redundant interface module (Advant Controller 450) |
| Supported I/O Modules | I/O boards with 4 to 32 channels per module |
| Configuration Requirement | Transparent bus extension, no software configuration or address remapping |
| Auxiliary Supply | 24 V DC taken from the rack backplane |
| Galvanic Isolation | Isolation between local backplane bus and extension cable bus ports |
| Status Indication | Front-panel LED indication of power, bus activity, and bus fault |
| Hot Replacement | I/O modules hot-replaceable; bus extension module to be handled with affected subracks de-energised |
| Operating Temperature | 0 °C to +55 °C continuous; derating above 55 °C |
| Storage Temperature | -40 °C to +85 °C, 5 % to 95 % RH non-condensing |
| Protection Class | IP20, for installation inside a closed control cabinet |
| Dimensions (W × H × D) | Approx. 2.2 cm × 17 cm × 10 cm |
| Net Weight | Approx. 0.1 kg |
| RoHS Status | Exempt from 2011/65/EU per Article 2(4)(c), (e), (f) and (j) |
| WEEE Category | Category 5 – Small Equipment (as per WEEE 2012/19/EU |
