Product Overview
The TRICONEX D28799-005 is a high-reliability redundant power supply module designed to deliver stable, fault-tolerant power to TRICONEX Tricon safety systems. As a cornerstone of industrial automation infrastructure, this module ensures continuous operation of critical control systems by providing dual redundant power paths, making it indispensable for environments where downtime could lead to safety incidents or production losses.
Engineered for seamless integration with the Tricon platform, the D28799-005 converts incoming AC or DC voltage into precise 24V DC power required by Tricon controllers, I/O modules, and communication devices. Its redundant architecture automatically switches to a backup power source in the event of primary failure, ensuring uninterrupted system operation. This reliability is further enhanced by advanced surge protection and overvoltage/undervoltage detection, which safeguard connected components from electrical anomalies. With a wide input voltage range (100–240V AC/DC) and robust EMI/RFI filtering, the D28799-005 adapts to diverse industrial power grids, from unstable offshore platforms to grid-tied refineries. Its compact DIN rail-mount design and low power consumption (≤10W) optimize space and efficiency in control panels, while compliance with SIL 2 (IEC 61508) certification ensures alignment with rigorous safety standards.
Technical Specifications
Key Features and Benefits
The TRICONEX D28799-005 redefines power reliability in safety-critical systems through its dual-channel redundancy. Each power path operates independently, with automatic failover ensuring zero downtime if one channel fails. This architecture eliminates single points of failure, a critical requirement for applications like emergency shutdown systems (ESDs) in oil refineries or reactor control in chemical plants.
Surge protection and voltage regulation mechanisms protect downstream components from transient spikes—a common risk in industrial settings with inductive loads. The module’s intelligent diagnostics monitor input/output voltage, current draw, and thermal conditions, providing real-time alerts via the Tricon controller. This proactive monitoring enables predictive maintenance, reducing unplanned outages and extending component lifespan.
Designed for harsh environments, the D28799-005 withstands extreme temperatures, humidity, and vibration, making it suitable for offshore platforms, desert oil fields, and high-heat manufacturing facilities. Its universal input compatibility simplifies global deployments by adapting to regional power standards, while the compact form factor streamlines retrofitting into existing control panels.
Long-term cost savings are achieved through TRICONEX’s commitment to component longevity. The
D28799-005 is engineered for 10+ years of service with minimal degradation, supported by field-replaceable fuses and modular design that reduces repair complexity.

Application Scenarios
The TRICONEX D28799-005 is pivotal in industries where power stability directly impacts safety and productivity. In oil and gas production, it powers subsea control modules and onshore ESD systems, ensuring continuous operation even during voltage fluctuations caused by generator switching or grid disturbances. Its redundancy is particularly critical in remote locations where maintenance access is limited.
In nuclear power plants, the module provides reliable power to radiation monitoring systems and reactor coolant pumps, adhering to SIL 2 requirements for equipment supporting safety-related functions. Its ability to handle wide input variations safeguards against grid instability during load shedding or equipment startup.
Chemical processing plants rely on the D28799-005 to energize distributed control systems (DCS) and batch reactor controls. By delivering consistent 24V DC power, it prevents process interruptions caused by voltage sags—a common issue in facilities with high-power motors and variable-frequency drives.
The module also supports smart manufacturing initiatives by powering IIoT gateways and edge computing devices in discrete manufacturing. Here, its EMI/RFI immunity ensures stable connectivity for real-time data transmission to cloud-based analytics platforms, enabling predictive maintenance and quality control.
Related Models
- TRICONEX D28799-006 – High-capacity variant with 10A output, ideal for systems requiring increased power alongside D28799-005.
- TRICONEX D28799-007 – Compact version with integrated surge protection, designed for space-constrained installations where D28799-005’s redundancy is unnecessary.
- TRICONEX 3625 – Backup battery module that pairs with D28799-005 to provide uninterrupted power during prolonged outages.
- TRICONEX CM2201 – Communication module frequently powered by D28799-005 in hybrid control systems requiring Profibus DP/Modbus RTU connectivity.
- TRICONEX MP3101 – Digital input module reliant on D28799-005’s stable power for accurate sensor signal processing.
- TRICONEX SM2110 – Supervisor module that interfaces with D28799-005 to manage power distribution across complex Tricon systems.
Installation and Maintenance
Installing the TRICONEX D28799-005 requires a DIN rail-mounted enclosure with adequate ventilation to dissipate heat. Ensure the mounting surface is grounded to minimize electromagnetic interference, and maintain a 50mm clearance around the module for airflow. Verify that the input voltage falls within 100–240V AC/DC and that the power source is isolated from high-noise equipment. Redundant channels should be connected to separate power feeds to maximize fault tolerance.
For maintenance, perform quarterly visual inspections to check for loose connections or signs of corrosion. Use the Tricon diagnostic interface to monitor output voltage and current draw monthly, ensuring readings remain within ±0.5% of nominal values. Replace fuses every 5–7 years as a preventive measure, even if no faults are detected. In high-dust environments, clean the module’s vents with compressed air bi-annually to prevent thermal degradation. While the module’s components are rated for 10+ years, consider replacing the unit every 15 years to leverage technological advancements in power efficiency and reliability.

Product Warranty and Company Introduction
The TRICONEX D28799-005 is backed by a one-year warranty covering defects in materials or workmanship, including free replacement and global technical support. This warranty is administered by Xiamen Xiongba E-commerce Co., Ltd., a trusted industrial automation solutions provider with over a decade of expertise. Specializing in DCS systems, robot control modules, and servo components, Xiongba sources directly from manufacturers to ensure authenticity and competitive pricing. Their portfolio includes PLCs, MOTOROLA MVME industrial boards, Anybus converters, and RTU modules, making them a one-stop partner for critical spares.
Xiongba’s commitment to quality extends beyond product supply—their technical team offers pre-installation power load analysis and post-deployment troubleshooting to optimize system performance. For customers requiring urgent replacements, Xiongba maintains a global inventory network, ensuring rapid delivery of D28799-005 and other TRICONEX components. With a focus on safety-critical industries, they adhere to strict quality control protocols, providing peace of mind for applications where power stability is non-negotiable.