Description

Product Overview

The SST-PB3-PCU-2-B V1.1.3 is a dual-channel PROFIBUS communication card manufactured by SST, a product brand associated with Woodhead/Molex industrial networking hardware. The part number corresponds to Molex catalog number 1120110027 and is specified as an SST PB3 card supporting PROFIBUS DP Master/Slave operation through two independent channels. It uses a PCI 3.3/5 V host interface and is intended for industrial PC-based control, PLC communication, and data-exchange applications.

The card provides a practical interface between a host computer and PROFIBUS DP networks, allowing industrial applications to exchange cyclic process data with field devices. It is particularly relevant to legacy automation systems where an existing PCI-based computer architecture must remain operational. The V1.1.3 marking should be retained when sourcing a replacement because hardware revisions can affect compatibility with existing drivers, libraries, and application software.

Technical Specifications — SST-PB3-PCU-2-B V1.1.3

The manufacturer catalog identifies 1120110027 as the two-channel PB3 PCI card, while distributor documentation specifies PROFIBUS DP Master/Slave functionality and the 3.3/5 V PCI interface.

SST SST-PB3-PCU-2-B V1.1.3

Key Features and Benefits — SST-PB3-PCU-2-B V1.1.3

• Two independent PROFIBUS DP communication channels.
• Supports both Master and Slave operating modes.
• PCI host interface compatible with 3.3 V and 5 V PCI environments.
• Designed for industrial PC-based automation systems.
• DLL/LIB software interfaces support integration with control applications.
• Suitable for PLC-to-PC and PC-to-field-device communication.
• Useful for maintaining legacy PROFIBUS installations without replacing the complete control computer.
• Dual-channel architecture can reduce the need for multiple interface cards in multi-network applications.

The two-channel architecture is the main practical advantage of this hardware. It allows one industrial PC to participate in separate PROFIBUS networks through a single PCI card, subject to application software and configuration requirements.

Related Models

SST-PB3-PCU-2: Two-channel SST PB3 PROFIBUS PCI card in the same product family, providing the same general dual-channel network architecture.

SST-PB3-PCU: Single-channel PB3 PROFIBUS PCI card designed for applications requiring one PROFIBUS network interface.

SST-PB3-PCIE-2: Two-channel PROFIBUS PB3 card using PCI Express rather than conventional PCI, making it more appropriate for newer industrial computers.

SST-PB3-ISA: Earlier single-channel PROFIBUS interface designed for ISA-based industrial computers and legacy control platforms.

Installation and Maintenance — SST-PB3-PCU-2-B V1.1.3

Before installation, confirm that the host computer provides a compatible PCI slot and that the operating system supports the required SST PB3 drivers and communication libraries. Record the existing driver version, card revision, PROFIBUS configuration, station addresses, and network parameters before replacement.

Install the card using appropriate ESD precautions and secure it firmly in the PCI chassis. After installation, verify driver recognition and confirm communication on both PROFIBUS channels. Check station diagnostics, master/slave status, bus termination, baud rate, and cyclic data exchange before returning the system to service.

For legacy systems, driver compatibility is particularly important. A physically compatible PCI card may still require the correct DLL/LIB software environment to operate with the existing control application.

Product Warranty — SST-PB3-PCU-2-B V1.1.3

Warranty coverage depends on the supplier, product condition, and purchase agreement. For critical industrial communication spares, confirm the exact part number, hardware revision, connector condition, driver compatibility, test status, and warranty terms before procurement.

The SST SST-PB3-PCU-2-B V1.1.3 is best treated as a configuration-specific dual-channel PROFIBUS PCI interface. Personally, I would verify the host computer’s PCI generation and installed SST software before approving a replacement; those two checks are often more important than the card’s physical appearance.