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Description
Technical Specifications
| Parameter Name | Value |
|---|---|
| Product Model | Emerson 1X00781H01L |
| Manufacturer | Emerson Automation Solutions |
| Product Type | DIN-Rail Power Supply Module |
| Series/Platform | Ovation DCS / DeltaV DCS |
| Output Voltage | 24 V DC (regulated) |
| Output Current | 10 A (rated) |
| Output Power | 240 W |
| Input Voltage Range | 85-264 V AC (47-67 Hz) or 90-375 V DC |
| Efficiency | >87-90% (typical) |
| Cooling Method | Fanless / Natural Convection |
| Mounting Method | Standard 35mm DIN Rail |
| Protection Functions | Overcurrent, Overvoltage, Short Circuit, Overtemperature |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5% to 95% (non-condensing) |
| Protection Class | IP20 (cabinet installation) |
| Dimensions | Approx. 60 x 125 x 63 mm or 100 x 58 x 25 mm |
| Weight | Approx. 0.27 – 0.9 kg |
| Certifications | UL (File E347058), CE, RoHS, IEC 61010-1 |
Main Features and Advantages
The Emerson 1X00781H01L distinguishes itself through a combination of wide-ranging compatibility, intelligent protection, and seamless system integration. At the core of its design is the universal AC input that accepts 85-264 VAC or 90-375 VDC . This feature allows the Emerson 1X00781H01L to be deployed in facilities with diverse power grids without requiring voltage selection switches or external transformers, significantly simplifying installation and reducing inventory complexity.
High efficiency and fanless reliability: The Emerson 1X00781H01L achieves conversion efficiency of up to 90%, meaning minimal energy is wasted as heat . This high efficiency, combined with the fanless natural cooling design, eliminates a common point of failure found in traditional power supplies . The result is a power module with exceptional longevity and reliability, capable of sustained operation in dusty or particulate-laden environments where cooling fans would quickly become clogged and fail.
Comprehensive protection suite: The Emerson 1X00781H01L includes built-in overcurrent, overvoltage, short-circuit, and overtemperature protections . These safeguards automatically shut down the output or limit current under fault conditions, preventing damage to downstream Ovation controllers and I/O modules. For process-critical applications, the Emerson 1X00781H01L supports redundant (N+1) configurations . Two or more power modules can be paralleled using external diode-ORing modules, ensuring that if one power supply fails, the remaining units seamlessly take over the entire load, enabling true zero-downtime maintenance.
Easy installation and maintenance: The Emerson 1X00781H01L mounts directly onto standard 35mm DIN rails, simplifying cabinet integration and allowing rapid replacement . Clear LED status indicators on the front panel provide immediate visual confirmation of operational status, power output, and fault conditions, enabling fast on-site diagnostics .
Application Fields
The Emerson 1X00781H01L is a foundational component deployed across industries that rely on the Emerson Ovation or DeltaV DCS platforms for critical process control. In the power generation sector, the Emerson 1X00781H01L powers the Ovation controllers, I/O racks, and communication interfaces that regulate boiler combustion, turbine control, and balance-of-plant systems in thermal, nuclear, and combined-cycle power plants . The module’s wide operating temperature range of -40°C to +70°C ensures reliable startup and continuous operation even in unheated outdoor cabinets in cold climates.
In the oil, gas, and petrochemical industry, the Emerson 1X00781H01L provides the stable 24V DC power essential for process interlocks, emergency shutdown systems, and critical control loops . Its high reliability and support for redundant configurations ensure that safety-critical functions remain operational even during single-component failures, supporting compliance with stringent safety standards.
The water and wastewater treatment sector relies on the Emerson 1X00781H01L to power remote I/O stations and pump control units in Ovation-based SCADA systems . The module’s IP20 protection class and robust component selection make it suitable for installation in control cabinets located near high-moisture treatment basins. Additional applications include metals and mining for mill conveyor controls, pulp and paper for continuous process automation, and pharmaceutical manufacturing where the Emerson 1X00781H01L supports GMP-compliant DeltaV systems with its stable, low-ripple output suitable for sensitive analog I/O modules .
