3PS476.90-1 Power Supply Module

The 3PS476.90-1 is an industrial dedicated power supply module developed by B&R Industrial Automation, designed exclusively for the SYSTEM 2005 modular automation platform. As a standard plug-in unit for the platform’s control backplane, it serves as the core power supply for single-rack and multi-rack control systems. Adopting mature switching power supply technology and full electrical isolation design, this module converts input voltage into stable multi-channel DC power to sustain the normal operation of CPU modules, I/O modules, bus control modules and other functional units within the rack. Built with a compact mechanical structure and optimized natural air cooling layout, it features small footprint, low noise and excellent heat dissipation performance. With strong electromagnetic interference resistance and comprehensive circuit protection mechanisms, the module supports long-term continuous operation in harsh industrial environments. It is widely used as a standard power configuration unit in new automation projects as well as equipment maintenance, renovation and upgrade scenarios across multiple industrial sectors.

The official model of the product is 3PS476.90-1, an original B&R product manufactured in Austria, and it is produced in compliance with the group’s global quality management system and international electrical standards. The module has obtained CE certification, meeting EU requirements for electrical safety and electromagnetic compatibility. Its protection degree is IP20 as defined by EN 60529, and it is intended for indoor installation inside standard industrial control cabinets. The nominal input voltage covers a universal AC range of 100 V to 240 V, adapting to power grids in different regions, with a working frequency of 50 Hz or 60 Hz. The main output is 24 VDC with a rated power of 50 W and stable output performance. The front panel is equipped with intuitive LED indicators to display power input status, output status and fault alarms in real time, facilitating on-site inspection and maintenance. Parameter configuration, operating status monitoring and fault diagnosis can be realized through B&R Automation Studio software. This module maintains full compatibility with all functional modules of the B&R SYSTEM 2005 series and is supplied as an original spare part for global project deployment and equipment replacement.

The 3PS476.90-1 functions as the central power supply unit for B&R 2005 series control racks, taking charge of providing stable and reliable DC power for all onboard modules. It adopts high-precision voltage regulation and power factor correction technology, with a power factor of over 0.95, which effectively reduces harmonic interference and improves power utilization efficiency. When the input AC voltage fluctuates within the allowable range, the output voltage remains highly stable, effectively avoiding system operation anomalies caused by grid voltage changes.

This module is integrated with comprehensive safety protection mechanisms, including over-voltage, under-voltage, over-current, short-circuit and over-temperature protection. Once abnormal conditions such as overload, short circuit or excessive internal temperature occur, it will automatically cut off power output and trigger an alarm to protect the module itself and all downstream equipment. The built-in inrush current suppression design limits the impact current during startup, minimizing the influence on the upper-level power supply.

Equipped with a dedicated expansion interface, the module can be connected to 2005 series expansion units to expand the power supply coverage and implement unified power management for multi-rack distributed systems. In terms of system architecture, it can operate independently for small single-rack control systems or work in parallel with multiple units to build a redundant power supply system for large-scale multi-rack systems. It supports hot swapping under normal operating conditions, allowing maintenance personnel to replace the module without shutting down the entire system, which greatly improves equipment operation efficiency and reduces downtime. As a foundational core module of the SYSTEM 2005 platform, it is fully matched with all CPU modules, digital and analog I/O modules, communication modules and bus control modules of the same series, and is an essential component for building stable, expandable and highly reliable modular automation control systems.

The 3PS476.90-1 adopts high-efficiency switching power supply topology with a maximum power conversion efficiency of up to 89%, which effectively reduces energy consumption and heat generation during operation. The input accepts universal AC voltage from 100 V to 240 V and works normally at 50 Hz or 60 Hz, featuring strong adaptability to different power supply environments. The main output is 24 VDC with a rated power of 50 W, and the output voltage precision is kept within a small deviation range to ensure stable power supply for load modules. Complete electrical isolation is implemented between the input side and output side, enhancing electrical safety and anti-interference capability.

In terms of protection performance, all output circuits support fast over-current and short-circuit protection. The over-temperature protection function will be activated automatically when the internal temperature exceeds the safety threshold to cut off power output and prevent component damage. The input side is equipped with surge suppression and electromagnetic filtering units to resist lightning surges and high-frequency interference from the power grid. The front-panel LED indicators clearly display input voltage status, output voltage status and fault information, enabling maintenance personnel to quickly locate and troubleshoot problems.

Regarding environmental adaptability, the rated operating temperature ranges from -10°C to +60°C, and the storage temperature ranges from -40°C to +85°C. It can work normally under a relative humidity of 5% to 95% non-condensing conditions. The module has excellent vibration and shock resistance to adapt to mechanical vibration and impact on industrial production sites. It adopts natural air cooling without additional cooling fans, featuring low noise and low failure rate. As a standard slot module for the 2005 series, it can be directly inserted into the standard backplane of the control rack for quick installation and fixing. The module supports 24-hour continuous long-term operation, with stable performance and long service life.

For on-site installation and wiring, users shall select industrial-standard AC input power cables, grounding cables and supporting wiring terminals that comply with relevant safety specifications. The module is fully compatible with standard backplanes, racks and slot accessories of the B&R SYSTEM 2005 series, supporting fast plug-in and fixed installation. When building multi-rack expansion systems, dedicated expansion connection cables and matching expansion slave accessories are required to realize power interconnection between the main rack and expansion racks.

B&R Automation Studio serves as the exclusive supporting software for this module, which can complete power parameter configuration, real-time operating status monitoring, fault log query and remote diagnosis. This power supply module can be combined with all CPU modules, digital and analog I/O modules, counter modules, bus controllers and human-machine interfaces of the 2005 series to form a complete modular automation control system. For redundant power supply applications, supporting parallel connection accessories and current sharing modules need to be configured to ensure balanced load distribution among multiple power supply units. In addition, standard industrial bus cables and Ethernet cables can be equipped according to system networking requirements to complete the overall layout of the control system.

The 3PS476.90-1 power supply module is mainly applied to all automation control systems built on the B&R SYSTEM 2005 platform, and it is the standard power configuration for both single-rack and multi-rack control systems. It is widely used in general machinery manufacturing, automated assembly lines, packaging machinery, textile machinery, printing and papermaking equipment, material conveying and lifting equipment, industrial machine tool auxiliary control systems, intelligent logistics sorting equipment and food and beverage processing machinery.

Whether for small independent control systems or large-scale multi-rack distributed control systems, this module can provide stable and continuous power support. With comprehensive protection functions and high operational reliability, it is particularly suitable for continuous production equipment that requires long-term non-stop operation and has strict requirements for power supply stability. The standardized modular design simplifies the internal wiring and layout of control cabinets, reduces the number of discrete power components, saves cabinet space and lowers the difficulty of subsequent equipment operation and maintenance. It is applicable to the construction of new automation projects as well as the technical transformation, upgrading and power system reconstruction of old production lines, and can maintain stable operation in industrial sites with harsh temperature, humidity and electromagnetic conditions.

The 3PS476.90-1 is an original genuine product of B&R Industrial Automation. All production, assembly, welding and testing procedures are implemented in strict accordance with international industrial quality standards and the company’s internal process specifications. Each finished module undergoes multiple rigorous tests before leaving the factory, including full-load aging test, voltage fluctuation test, protection function test, anti-interference test and communication matching test, to ensure consistent and reliable product quality. The product has passed CE certification and complies with international electrical safety and electromagnetic compatibility standards.

Adopting high-quality electronic components and rigorous industrial design, the module features low power consumption, low failure rate, long service life and strong environmental adaptability, and can cope with complex industrial conditions such as temperature changes, humidity and strong electromagnetic interference. B&R has a complete global quality assurance system and after-sales service network, providing users with professional technical consultation, installation guidance, power debugging, fault troubleshooting and long-term after-sales support. As a mature power supply product that has been widely verified in global industrial sites, it is a reliable choice for power configuration and system expansion of B&R 2005 series automation systems.