3PS477.9 Power Supply Module

The 3PS477.9 is an industrial-grade system power supply module developed by B&R Industrial Automation, specifically designed for the SYSTEM 2005 modular automation platformB& R Industrial Automation. As a double-width plug-in module, it is installed on the standard backplane of the control rack and serves as the core power source for the entire rack systemB& R Industrial Automation. Adopting advanced switching power supply technology and a fully isolated electrical structure, the module converts external DC input into multiple groups of stable DC power to support the normal operation of CPU modules, I/O modules, bus control modules and other functional units within the rack. Equipped with a dedicated expansion slave interface, it can connect with expansion units to realize power supply expansion for multi-rack distributed control systemsB& R Industrial Automation. With a compact mechanical design and optimized heat dissipation layout, the module delivers high operational stability and strong electromagnetic interference resistance, enabling long-term continuous operation in complex industrial environments. It is widely deployed as a standard power configuration unit in new automation projects and equipment maintenance and upgrade scenarios across multiple industrial sectors.

The official product model is 3PS477.9, 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 safety standards. The module has obtained CE and cULus certifications, meeting the electromagnetic compatibility and safety requirements of EU and North American markets. It features an IP20 protection rating as defined by the EN 60529 standard and is intended for indoor installation inside standard industrial control cabinets. The nominal input voltage is 24 VDC, with an allowable fluctuation range from 18 VDC to 30 VDC, and the maximum input current is 3.5 A. It provides two main DC output circuits: 24 VDC with a rated power of 50 W and 5 VDC with a rated power of 40 W, with a total maximum output power of 60 W. A built-in 6.3 A slow-blow fuse rated at 250 V provides basic circuit protection against overload and short circuit. Multiple LED indicators on the front panel display power input status, output status and fault alarms in real time for intuitive on-site status judgment. Parameter configuration, real-time status monitoring and fault diagnosis can be carried out via 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 3PS477.9 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 technology, which ensures stable output voltage even when the input voltage fluctuates within the specified range, effectively avoiding system malfunctions caused by grid voltage changes. In addition to conventional power supply, the module integrates an external RAM retention function by outputting 12 VDC (operating range 8 VDC to 30 VDC), which prevents system RAM data loss during brief power outages or voltage fluctuations.

This power supply module is equipped 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 overheating 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 reduces the impact current during startup and minimizes interference to the upper-level power supply.

With the dedicated expansion slave 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 systemsB& R Industrial Automation. In terms of system architecture, it can operate independently for single-rack control systems or form a combined power supply system with multiple modules for large-scale multi-rack networks. It supports hot swapping under normal operating conditions, allowing on-site maintenance and module replacement without shutting down the entire system, which greatly improves equipment operation efficiency. As a foundational core module of the SYSTEM 2005 platform, it is fully matched with all CPU modules, 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 3PS477.9 adopts a high-efficiency switching power supply topology. The nominal input voltage is 24 VDC, with a working range of 18 VDC to 30 VDC and a maximum input current of 3.5 A. It delivers two stable DC outputs: 24 VDC/50 W and 5 VDC/40 W, with a total output power of 60 W. The power conversion efficiency remains high under both light load and full load conditions, effectively reducing energy consumption and heat generation. Complete electrical isolation is implemented between the input side and output side to enhance electrical safety and anti-interference capability.

For protection performance, all output circuits support fast over-current and short-circuit protection. The over-temperature protection function activates 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 show input voltage status, output voltage status and fault information, enabling maintenance personnel to quickly locate and troubleshoot problems.

In terms of environmental adaptability, the rated operating temperature ranges from 0°C to +60°C, and the storage temperature ranges from -25°C to +70°CB& R Industrial Automation. It can work normally under a relative humidity of 5% to 95% non-condensing conditionsB& R Industrial Automation. The module has excellent vibration and shock resistance to adapt to mechanical vibration and impact on industrial production sites. As a double-width module for the 2005 series, it occupies two slot positions on the backplane and is recommended to be installed in the leftmost slot of the rackB& R Industrial Automation. The expansion slave interface follows B&R unified communication standards to ensure stable power and signal transmission between the main rack and expansion racks. The module supports 24-hour continuous long-term operation, featuring a low failure rate and long service life.

For on-site installation and wiring, users shall select industrial-standard 24 VDC 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 installationB& R Industrial Automation. 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 systemB& R Industrial Automation. 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 3PS477.9 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 systemsB& R Industrial Automation. 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 3PS477.9 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 and cULus certifications 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.