Description
FOXBORO RH928AW Product Specification
Product Overview :FOXBORO RH928AW
The FOXBORO RH928AW is a high-reliability redundant power supply module designed for industrial automation systems, specifically as part of FOXBORO’s I/A Series Distributed Control System (DCS). Engineered by Emerson Automation Solutions, a global leader in process control, this module serves as a critical component in power distribution architectures, ensuring continuous and stable power delivery to control processors, I/O modules, and field devices in mission-critical environments. The FOXBORO RH928AW is optimized for applications requiring fault tolerance and seamless power management, such as oil refineries, power plants, and large-scale manufacturing facilities.
As a dual-input power supply, the FOXBORO RH928AW supports both AC and DC power sources (100–240 VAC or 24 VDC), providing redundancy to eliminate single points of failure. It features a compact design (177.8 mm × 44.5 mm × 241.3 mm) and rack-mountable form factor, enabling easy integration into standard 19-inch control cabinets. The module’s advanced power conditioning capabilities include surge protection, overvoltage/undervoltage regulation, and thermal management, ensuring consistent performance across wide operating temperatures (-40°C to +70°C) and harsh industrial conditions.
Within automation systems, the FOXBORO RH928AW plays a pivotal role in maintaining system availability by providing clean, regulated power to the I/A Series platform. Its hot-swappable design allows for maintenance without disrupting system operation, minimizing downtime during component replacement. By combining robust hardware with intelligent power monitoring (via built-in status LEDs and diagnostic interfaces), the module empowers engineers to proactively manage power integrity, reduce operational risks, and comply with industry standards for safety and reliability.
Technical Specifications :FOXBORO RH928AW
Parameter Name | Parameter Value |
---|---|
Product Model | FOXBORO RH928AW |
Manufacturer | FOXBORO (Emerson Automation Solutions) |
Product Type | Redundant Power Supply Module |
Input Voltage | 100–240 VAC (50/60 Hz) or 24 VDC (dual inputs for redundancy) |
Output Voltage | 24 VDC ±1% (regulated for I/A Series components) |
Output Power | 100 W continuous |
Physical Dimensions | 177.8 mm (W) × 44.5 mm (H) × 241.3 mm (D) |
Weight | 1.5 kg |
Redundancy Support | Dual-input auto-failover without service interruption |
Operating Temperature | -40°C to +70°C |
Humidity | 5%–95% non-condensing |
Installation | 19-inch rack-mountable (EIA-310 compliant) |
Certifications | CE, UL, CSA, ATEX (for hazardous areas) |
RH928AW
Main Features and Advantages :FOXBORO RH928AW
Dual-Input Redundancy: The FOXBORO RH928AW supports simultaneous connection to two independent power sources (AC and/or DC), automatically switching to the backup supply in the event of a primary failure. This feature eliminates downtime caused by power interruptions, critical for systems where continuous operation is non-negotiable, such as chemical plants or offshore platforms.
Hot-Swappable Design: Engineered for maintenance efficiency, the module can be replaced while the system remains powered, reducing mean time to repair (MTTR) and eliminating the need for system shutdowns. This is particularly valuable in 24/7 production environments where downtime translates to significant losses.
Wide Input Range and Power Conditioning: The module’s flexible input range (100–240 VAC) accommodates global power standards, while advanced filtering and surge protection (up to 2 kV) safeguard against electrical disturbances. Its regulated 24 VDC output ensures stable power delivery to sensitive control components, even in unstable grid conditions.
Rugged Industrial Construction: Built with a metal enclosure and conformal-coated PCBs, the FOXBORO RH928AW resists dust, moisture, and electromagnetic interference (EMI), making it suitable for harsh environments. Its wide temperature range and vibration tolerance (5–50 Hz, 2 g) align with the rigorous demands of industrial applications.
Intuitive Diagnostics: Front-panel LED indicators provide real-time status updates (power input, output voltage, fault conditions), enabling quick troubleshooting. The module also integrates with FOXBORO’s I/A Series software for remote monitoring of power health and performance metrics, enhancing predictive maintenance capabilities.

RH928AW
Application Areas :FOXBORO RH928AW
The FOXBORO RH928AW is ideally suited for industries requiring reliable and redundant power solutions:
-
Oil and Gas:
- Powers DCS systems in refineries, offshore platforms, and pipeline control centers, ensuring uninterrupted operation of critical processes like pressure regulation and safety interlocks.
- Supports ATEX-certified installations in hazardous zones, meeting strict safety standards for explosive environments.
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Power Generation:
- Provides stable power to turbine control systems, generator protection relays, and SCADA networks in thermal, hydro, and renewable energy plants.
- Redundancy features ensure continuous operation during scheduled maintenance or unexpected power outages.
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Manufacturing and Process Industries:
- Maintains power supply to robotics, conveyor systems, and quality control instruments in automotive, pharmaceutical, and food processing facilities.
- Enables seamless integration with FOXBORO’s I/A Series for centralized monitoring and control of power distribution across complex production lines.
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Water and Wastewater Treatment:
- Reliably powers pumps, valves, and analytical instruments in water treatment plants, ensuring consistent water quality and regulatory compliance.
- Hot-swappable design minimizes downtime during maintenance, critical for uninterrupted water supply services.
Related Products :FOXBORO RH928AW
- FOXBORO RH928BW: A higher-power variant (150 W) of the FOXBORO RH928AW, suitable for systems with increased power demands, such as large I/O racks or multiple control processors.
- FOXBORO P0904TA: A single-input power supply module for non-critical applications, offering basic functionality at a lower cost compared to the redundant FOXBORO RH928AW.
- FOXBORO CPE30: A control processor module for the I/A Series, often paired with the FOXBORO RH928AW to ensure stable power for real-time process control.
- FOXBORO I/A Series I/O Modules (e.g., P0914XY): Complementary I/O modules that rely on the FOXBORO RH928AW for power, enabling analog/digital signal processing in distributed control systems.
- FOXBORO RH910A: A redundant power supply adapter kit that enhances system scalability by allowing multiple FOXBORO RH928AW modules to be configured in parallel for higher power capacity.
RH928AW
Installation and Maintenance :FOXBORO RH928AW
Pre-installation Preparation:
Before installing the FOXBORO RH928AW, ensure the following:
Before installing the FOXBORO RH928AW, ensure the following:
- Verify that the input power sources (AC/DC) match the module’s specifications and are properly grounded to prevent electrical hazards.
- Prepare the 19-inch rack with appropriate mounting brackets and ensure adequate ventilation for heat dissipation, as the module generates minimal heat during operation.
- Plan the power distribution layout to optimize cable management, ensuring clear separation of power and signal cables to reduce EMI interference.
Maintenance Recommendations:
- Routine Inspections: Regularly check the front-panel LEDs to confirm normal operation (e.g., green “Power In” and “Output Good” indicators). If a fault LED activates, use the I/A Series software to identify the cause (e.g., input failure, overload).
- Cleaning: Every six months, use a dry cloth or compressed air to remove dust from the module’s vents, particularly in dusty environments, to maintain optimal thermal performance.
- Redundancy Testing: Annually simulate a primary power failure to verify the module’s failover capability, ensuring the backup input activates within milliseconds without system disruption.
- Component Replacement: In the event of a faulty module, replace it with a pre-configured spare while the system remains online, leveraging the hot-swappable design to avoid downtime.
RH928AW
Product Warranty :FOXBORO RH928AW
Our company offers a one-year quality warranty for the FOXBORO RH928AW, covering all non-human-induced hardware defects, including power supply failures, component malfunctions, and thermal issues. During the warranty period, any defective module will be promptly replaced to ensure uninterrupted system operation. For discontinued or hard-to-find models like the FOXBORO RH928AW, our extensive global inventory and robust supply chain network enable rapid fulfillment of urgent orders, minimizing downtime for critical applications. Beyond the warranty period, we provide ongoing technical support and repair services to help maintain the longevity and reliability of your automation infrastructure.
Contact Information:
Whatsapp: +86 18859254943
E-mail: sales@ygplc.com
Whatsapp: +86 18859254943
E-mail: sales@ygplc.com
Note: This product description is based on technical insights derived from FOXBORO’s official documentation and industry applications. For detailed operational guidelines or customization requests, contact our technical support team or refer to the FOXBORO RH928AW user manual.
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