Emerson Ovation 5A26137G01 Rack Power Distribution Module_Ningde Androld Automation Equipment Co.,Ltd.

June 11, 2026

Emerson Ovation 5A26137G01 Rack Power Distribution Module

The 5A26137G01 is an original plug-in power distribution accessory module for Emerson Ovation DCS control racks, suffix G01 stands for fixed hardware revision and factory calibrated version. It cooperates with rack redundant power supply modules to realize secondary power branching, distribution, fusing and monitoring inside the control cabinet, distributes isolated DC working power to DPU controllers, various I/O electronic modules and terminal bases separately. It carries multi-channel independent branch protection, power status detection and fault signal upload functions, supports hot-swap maintenance under redundant power configuration, is an indispensable power distribution component for Ovation standard control cabinets, widely used in thermal power, petrochemical, metallurgy and other process industries.

Description

1. Overview

This module adopts standard Ovation rack plug-in installation structure, compatible with standard rack backplane slots. The main DC power output from redundant power supply modules is connected to this distribution module first, then split into multiple independent branch power circuits. Each branch is equipped with independent fusing protection, voltage sampling and status feedback circuits. It transmits power to each slot DPU and I/O modules in the rack, meanwhile uploads branch overvoltage, undervoltage, fuse blown and overload fault signals to DPU and upper monitoring system via backplane bus. Every unit undergoes factory full-load current testing, voltage accuracy verification and insulation withstand test to ensure long-term stable power distribution performance.

2. Core Functional Features

2.1 Multi-channel Independent Branch Power Distribution

Realizes one-input multi-output power branching, each output branch supplies power to fixed rack slots or module groups; each branch is electrically isolated from one another, single branch overload or short circuit will not affect other power branches and the total input power supply.

2.2 Independent Fuse Protection Per Output Branch

Each power branch is configured with a replaceable dedicated fuse. Short-circuit, overload fault on a single branch only blows its own fuse, without rack-wide power loss; spare fuse positions are reserved for quick on-site replacement and maintenance.

2.2 Real-time Power Parameter Monitoring

Onboard voltage and current sampling circuits continuously detect each branch output voltage, load current and module internal temperature. Operation data can be uploaded remotely to the operator station for real-time viewing and trend recording.

2.4 Automatic Fault Alarm & Latching

Once fuse blown, branch undervoltage/overvoltage, overload or over-temperature occurs, the module latches the fault state, triggers local panel fault indicator light, and sends fault alarm signal to upper monitoring platform for remote prompt.

2.5 Supports Hot-swap Online Maintenance

When the cabinet is equipped with dual redundant main power supplies, the distribution module can be replaced online without cutting off the whole cabinet power supply; existing control loops and running logic keep continuous operation without disturbance.

2.6 Built-in EMI Filter & Anti-interference Design

Input side integrates high-frequency filter circuit, suppresses power grid surge and electromagnetic interference coupled into the DCS control loop, reduces power ripple, improves stability of module working voltage.

2.7 Perfect Native System Compatibility

Fully matched with Ovation standard rack backplanes, redundant power supply modules, DPUs and full series I/O modules; no adapter board or cabinet modification needed during installation, applicable for new cabinet assembly and spare part replacement during unit renovation.

3. Key Technical Specifications

Mounting Mode: Standard Ovation rack plug-in installation
Input Power: DC power output from rack main redundant power supply module
Output Mode: Multiple independent isolated DC power branches
Branch Protection: Each channel independent replaceable fuse, overcurrent limiting, short-circuit lockout
Monitoring Items: Branch output voltage, load current, internal temperature, fuse state
Isolation Strength: Input and each output branch reinforced electrical isolation
Operating Temperature: 0 ℃ ~ +60 ℃
Storage & Transportation Temperature: −40 ℃ ~ +85 ℃
Relative Humidity: ≤95% RH, non-condensing
EMC Compliance: Complies with industrial G3 anti-corrosion standard and power plant cabinet anti-interference requirements
Hot-swap Restriction: Only allow hot plugging under dual redundant main power supply running state

4. Front Panel LED Indicator Definition

PWR IN (Green): Steady ON = total input power normal; OFF = input power loss
BRx OK (Green): Individual branch power normal indicator light, steady on for normal working
FAULT (Red): Lights up for branch fuse blown, overload, undervoltage or overtemperature, fault status latched
COMM (Green): Flashing periodically = normal communication with backplane DPU

5. Application Scope

Thermal Power Industry
Installed in boiler, turbine, generator main control cabinets and auxiliary system cabinets, distributing branch power for DPUs and all slots I/O modules, realizing partitioned power protection and centralized power monitoring of the whole rack.
Petrochemical Industry
Used in reactor, fractionator and compression unit control cabinets, realizing segmented power supply protection for each control loop, avoiding single branch fault leading to whole unit control shutdown.
Metallurgy, Waste Incineration Power Plants & District Heating Stations
Undertakes secondary power distribution and branch fault monitoring for automation control cabinets, guarantees long-cycle unattended stable operation of the whole production line control system.

Contact Info