Description

ABB UNS0119A-P V101​is a high-reliability,hot-swappable AC/DC power supply module manufactured by ABB for its Industrial IT/800xA​control system architecture.Specifically designed for the AC 800M high-performance controller family,this module converts standard mains voltage(120/230V AC)into a stabilized 24V DC output,providing the essential operating power for the controller’s CPU,communication,and I/O modules.It is a core component in building fault-tolerant,continuous process control systems.

Application Scenarios

In a large-scale chemical processing plant,the Distributed Control System(DCS)is the central nervous system,and its uninterrupted operation is paramount.The AC 800M controller managing a critical batch reactor must never lose power,as even a millisecond of interruption could corrupt control logic,halt production,and trigger safety sequences.The plant engineer cannot afford a single point of failure.Here,the ABB UNS0119A-P V101​power supply module is deployed in a redundant(N+1)configuration​within the controller rack.Two or more UNS0119A-P V101​modules share the load.Each module monitors its own health and the output of its peers.If the primary module fails or its output sags,the redundant modules instantly and seamlessly take over the full load without any voltage drop or controller reset.This hot-swap capability means a faulty module can be replaced while the controller remains online,ensuring 24/7 control system availability.A maintenance supervisor at a petroleum refinery stated,”After a lightning storm caused a surge that took out one of our controller power supplies,the redundant UNS0119A-P V101​kept the system running without a flicker.We replaced the failed module during normal operations.That redundancy,built on modules like this,is what allows us to claim 99.999%availability for our safety-critical control loops.”

Parameter

Main Parameters

Value/Description

Product Model​

UNS0119A-P V101​

Manufacturer​

ABB

Product Category​

Hot-swappable Redundant Power Supply Module

Input Voltage​

120/230 V AC,50/60 Hz(auto-sensing)

Output Voltage​

24 V DC(regulated)

Output Current/Power​

Typically 10A/240W(supports multiple controller modules)

Redundancy​

Supports N+1 parallel operation with load sharing and fault tolerance.

Hot-Swap Capable​

Yes,can be inserted/removed without powering down the system.

Efficiency​

High efficiency(>90%)to minimize heat and energy loss.

Protections​

Overvoltage,overcurrent,short circuit,and overtemperature protection.

Status Indication​

LED indicators for AC OK,DC OK,Load Share,and Fault.

Cooling​

Fan-cooled for reliable operation in enclosed panels.

Communication​

May provide a contact or signal for remote health monitoring.

Compatibility​

Designed for ABB AC 800M Controller racks(e.g.,PM803F,PM861,PM864 base units).

Technical Principles and Innovative Values

Innovation Point 1:True N+1 Redundancy with Active Current Sharing

The core innovation of the ABB UNS0119A-P V101​is its implementation of active load sharing​in redundant configurations.Unlike simple diode-OR redundancy where a backup unit sits idle,multiple UNS0119A-P V101​modules connected in parallel actively communicate and balance the output load evenly.This approach has two major benefits:it prevents the single-point failure of a primary module,and it evenly distributes thermal stress across all units,significantly extending the overall lifespan of the power supply system.The transition during a failure is bumpless,as the remaining healthy modules are already carrying part of the load and simply increase their output.

Innovation Point 2:Advanced Diagnostics and Hot-Swap Functionality

The module is designed for maximum system uptime.Comprehensive LED diagnostics​on the front plate provide instant visual status on input power,output health,load sharing activity,and fault conditions.This allows for rapid identification of a failing unit.Combined with its true hot-swap capability,maintenance can be performed predictively.An engineer can identify a module showing early warning signs(e.g.,a failing fan)and schedule its replacement during a planned maintenance window,removing it from the live system and inserting a new one without ever needing to schedule a process shutdown or disrupt the controller’s operation.

Innovation Point 3:Robust Design for Critical Environments

Engineered for 24/7 operation in industrial control rooms,the UNS0119A-P V101​features a wide input voltage range with auto-sensing,allowing it to be deployed globally without hardware changes.It incorporates robust filtering to withstand line-borne electrical noise and surges common in industrial settings.High efficiency and intelligent fan control minimize heat generation and acoustic noise,contributing to the stability of the entire controller cabinet.Its design is fully integrated with the AC 800M system’s mechanical and electrical architecture,ensuring optimal airflow,secure mounting,and reliable connections.

Application Cases and Industry Value

Case Study:Ensuring Zero Downtime in a Natural Gas Liquefaction(LNG)Train

An LNG facility operates a”train”where natural gas is supercooled to-162°C.The process is highly integrated and continuous;a shutdown can cost millions of dollars per day in lost production and requires a complex,days-long restart procedure.The AC 800M DCS controlling the cryogenic heat exchangers,compressors,and safety systems must have absolute power integrity.

The control system architect specified that all critical controller racks use redundant power feeds,each backed by an Uninterruptible Power Supply(UPS),and that each controller rack itself must have redundant power modules.The ABB UNS0119A-P V101​was selected as the internal rack-level power supply.Two UNS0119A-P V101​modules were installed in each rack,fed from the two separate UPS-backed AC sources.

During a site-wide voltage dip caused by a grid disturbance,one of the dual UPS input feeds experienced a transient.The UNS0119A-P V101​module connected to that feed detected the anomaly and seamlessly transferred the full load to its redundant partner module within the rack in microseconds.The AC 800M controllers never detected a power glitch;control continued uninterrupted.The faulty AC feed was investigated and restored,and the affected power supply module continued operating in a redundant standby role after recovery.The result was averted disaster:​A potential full train trip was prevented.The N+1 redundancy​at the module level,a direct feature of the UNS0119A-P V101​design,provided the final layer of defense that kept the multi-billion dollar facility online.The project lead engineer confirmed,”The investment in fully redundant power,down to the controller module level with components like the UNS0119A-P V101,is the best insurance policy we have.It has paid for itself many times over by preventing unscheduled outages.”

Related Product Combination Solutions

ABB AC 800M CPU Modules(e.g.,PM803F,PM861,PM891):​The primary processors that are powered by the UNS0119A-P V101​modules via the controller backplane.

ABB CI854/CI855/CI871 Communication Interfaces:​Network modules for PROFIBUS,Ethernet,etc.,that reside in the same AC 800M rack and draw power from the UNS0119A-P V101.

ABB S800 I/O Modules with LU01 Link Unit:​The distributed I/O system;the UNS0119A-P V101​powers the controller that masters these remote I/O stations.

ABB 800xA System Power Feeds&UPS:​The upstream plant power distribution and Uninterruptible Power Supply systems that provide clean,backed-up AC power to the cabinets containing the UNS0119A-P V101.

ABB Controller Racks&Baseplates(e.g.,for PM803F):​The physical enclosures and backplanes into which the UNS0119A-P V101​and other controller modules are installed.

ABB Power Supply Monitoring Software(via 800xA):​System software that can monitor the health status of the UNS0119A-P V101​modules if they are equipped with appropriate communication interfaces,enabling predictive maintenance.

Installation,Maintenance,and Full-Cycle Support

Installation of the ABB UNS0119A-P V101​is straightforward but must be performed on de-energized equipment during initial cabinet build-out.The module slides into its dedicated slot in the AC 800M controller rack and is secured with screws.The AC input is wired to a protective circuit breaker,and the DC output is automatically connected to the system backplane.In a redundant configuration,proper load-sharing cables must be connected between the modules as per the wiring diagram.Commissioning involves verifying the input voltage,confirming all status LEDs indicate normal operation,and checking that load is shared equally in redundant setups.

Maintenance is primarily condition-based.The built-in LED indicators provide the first line of health assessment.Scheduled maintenance involves visual inspection,checking for abnormal fan noise,and verifying the security of electrical connections.The key maintenance activity is the hot-swap replacement​of a module identified as faulty or as part of a preventive replacement schedule.This is done by unlocking the module,gripping the extraction handle,and firmly pulling it straight out,then inserting the replacement until it clicks into place.The system automatically incorporates the new module into the redundant array.

We supply 100%genuine,factory-new ABB UNS0119A-P V101​power supply modules.Each unit is sourced from authorized channels and undergoes a basic electrical test to verify functionality.Successful implementation requires integration into a compatible ABB AC 800M controller rack by qualified personnel following all electrical safety standards and ABB installation guidelines.This module is the cornerstone for building highly available control systems in power generation,oil&gas,chemicals,and other industries where control system uptime is directly tied to safety and profitability.

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