Product Overview

The DSSB145 (Part Number 48980001-AA) is a specialized power management and interface board designed for the ABB Advant OCS (Open Control System) environment. Primarily utilized as an auxiliary converter, this board provides critical voltage regulation and control signal conditioning for Drive Supply Units (DSU). Unlike internal rack modules, the DSSB145 is engineered for external mounting relative to the DSU, serving as a functional bridge that handles power distribution and grounding through dedicated ribbon cable connections to DSMB or DSCP motherboards. This architecture allows for a modular power layout, reducing thermal load within the primary controller housing while providing a localized user interface for DSU operational monitoring.

Technical Specifications

• Model Designation: DSSB145

• ABB Ordering Number: 48980001-AA

• Input Power Requirement: 24V DC (Nominal)

• Output Voltage Capability: Adjustable and user-configurable (System-dependent)

• Thermal Performance: -20°C to +60°C (-4°F to 140°F)

• Interface Connectivity: Multi-way ribbon cable for power and grounding logic

• Protective Rating: IP20 (Open-style for cabinet installation)

• Installation Profile: Supports external DIN rail or panel-mount configurations

• Physical Dimensions: 160 mm x 160 mm x 120 mm (6.3 x 6.3 x 4.7 in)

• Net Weight: 0.8 kg (1.76 lbs)

• System Hierarchy: External power node for Advant OCS DSU modules

Operational Role & Connectivity

The DSSB145 is a key component in "Distributed Power" architectures for heavy industrial drives. By separating the DC/DC conversion stage from the main DSU module, ABB enhances the system's modularity and serviceability. The board receives its primary logic power and grounding reference via a ribbon cable linked to the DSMB (Distribution Board) or DSCP (Processor Board), ensuring a common-mode voltage reference across the entire drive assembly. This setup not only regulates the necessary voltages for the drive logic but also offers a simplified physical interface for engineers to execute basic control and diagnostic functions directly at the conversion point.