Detailed Product Description of Emerson 1X00024H01 (Model Alias WH1-2FF)

I. Product Overview

1X00024H01 (also known as WH1-2FF) is a dedicated AC/DC power module for Emerson (formerly Westinghouse)'s Ovation DCS system. It is a core power supply unit for the control station and I/O subsystem. It converts a wide range of 100–240VAC alternating current into two isolated 24VDC stable direct currents, providing high-reliability, low-noise, redundant-configurable power supply for Ovation controllers, I/O racks, communication modules, and field instruments. It is a key infrastructure for large-scale process industries such as thermal power, chemical, and metallurgy DCS systems, emphasizing industrial-grade stability, high efficiency, comprehensive protection, and hot-swappable maintenance capabilities. 

II. Basic Information

Brand: Emerson (Emerson) / Westinghouse (Westinghouse) / Magnetek (OEM)

Model: 1X00024H01 (Identification: WH1-2FF)

Product Type: Ovation DCS System 24VDC Redundant Power Module

Compatible System: Ovation 1X Series I/O Cabinet, Control Station Enclosure

Installation Method: Standard 19-inch Rack Installation or DIN Rail Installation

Product Status: In Production (Mainstream), New Original / Factory Refurbished Supply is Abundant, Core Spare Parts for Old Systems

Warranty: New Original 12 Months, Factory Refurbished 12 Months

Manufacturing Standards: Compliant with CE, UL, CSA, RoHS, Meeting Class A Industrial EMC and Safety Requirements

Origin: United States

Weight: Approximately 3.1 kg

Size: Standard Rack Module (Approximately 250mm × 120mm × 80mm)

Hardware Version: Common Rev 01/02

III. Core Functions

1. Wide-range AC Input and Efficient Voltage Stabilization

Supports 100–240VAC (50/60Hz) universal voltage input worldwide, automatically adapts to grid fluctuations, no manual adjustment required. Utilizes high-efficiency AC/DC conversion technology (efficiency > 85%), low heat generation and low energy consumption under full load, reducing cabinet heat load, good economic performance over the long term.

2. Dual Isolated 24VDC Outputs (Primary / Backup Separation)

Provides two independent isolated 24VDC outputs: Primary channel 24VDC/12A (core control / I/O power supply), Backup channel 24VDC/8A (auxiliary equipment / redundancy backup), total power 500W. The two outputs are electrically isolated, not interfering with each other, capable of separately powering the main control and backup circuits, enhancing system fault-tolerance capability.

3. Redundancy Configuration and Non-disruptive Switching

Supports dual power supply parallel redundancy (N+1), can be combined with the same model modules to form a redundant power supply system. In the event of a main power failure, the backup power automatically switches seamlessly within milliseconds, without voltage drop or system restart, ensuring continuous control logic and I/O signals, meeting high reliability process scenarios.

4. Hot Swap Maintenance (Online Replacement)

Supports live hot swapping, no need for downtime or power interruption to replace faulty modules online, maintenance with zero downtime, significantly reducing the risk of production downtime due to power failures, suitable for 7×24-hour continuous operation conditions.

5. Comprehensive Protection Mechanism (Overvoltage / Overcurrent / Short Circuit / Overheating)

Built-in multiple hardware protections: Output overvoltage clamping, overcurrent limiting, short circuit instantaneous shutdown (self-recovery), overheating shutdown (temperature fall automatic recovery), input reverse polarity protection, surge / ESD protection. In the event of a fault, the module automatically isolates, does not affect other equipment, while the panel displays alarms, facilitating rapid location.

6. Low Ripple Noise and High Stability

Uses passive cooling + multi-stage filtering design, output ripple < 50mV, extremely low noise, suitable for DCS controllers, precision I/O modules, field transmitters, etc. that are sensitive to power quality, avoiding signal drift or misoperation caused by electromagnetic interference.

7. Status Indicators and Remote Alarm

Panel equipped with LED status indicator lights: Power normal (green), Output ready (green), Fault / Alarm (red), clearly displaying input, output, redundancy, protection status. Supports remote dry contact alarm output, can be connected to DCS or SCADA systems, enabling centralized monitoring and fault warning of power status.

8. Industrial-grade ruggedness and wide temperature compatibility The entire metal casing is reinforced, with three protection coatings (damp-proof / corrosion-resistant / salt-spray resistant), capable of withstanding vibration (5g, 10–500Hz) and impact (15g, 11ms). The operating temperature ranges from -25℃ to +60℃ (without reduction of capacity under full load), and the storage temperature ranges from -40℃ to +85℃. It can withstand harsh industrial environments such as high temperatures, high humidity, high dust, and strong electromagnetic interference.

IV. Technical Parameters

1. Input Parameters

Input Voltage: 100–240VAC (±10%), 50/60Hz

Input Current: Maximum 8A (full load at 240VAC)

Starting Current: <30A (cold start)

Power Factor: >0.9 (full load)

2. Output Parameters

Output Channels: Dual isolated 24VDC

Main Output: 24VDC (±1%), 12A, 300W

Auxiliary Output: 24VDC (±1%), 8A, 200W

Total Power: 500W (full load)

Ripple Noise: <50mV (peak-to-peak)

Load Regulation Rate: <0.5% (0–100% load)

Linearity Regulation Rate: <0.1% (input fluctuation ±10%)

3. Protection Parameters

Overvoltage Protection: Clamping / Turn-off when output > 28VDC

Overcurrent Protection: Limiting current < 13A (main) / 9A (auxiliary) for a limited time

Short-Circuit Protection: Instantaneous shutdown, automatic recovery upon fault elimination

Overheating Protection: Shutdown > 85℃, Automatic restart < 60℃

Isolation Strength: 2000VAC between input and output / 1min, 500VAC between channels / 1min

5. Environmental Parameters

Operating Temperature: -25℃ to +60℃ (full load)

Storage Temperature: -40℃ to +85℃

Relative Humidity: 10%–95% RH, no condensation

Vibration: 5g (10–500Hz, sine wave)

Impact: 15g (11ms, half sine wave)

Protection Grade: IP20 (module level, compatible with cabinet protection)

V. Compatibility and Substitution Relationship

1. Compatible Systems and Components

Compatible Cabinets: Ovation 1X series I/O cabinets, standard control station chassis

Compatible Loads: Ovation 1C/1P/1X series controllers, I/O modules, communication cards, 24VDC field instruments

Redundancy Configuration: Supports N+1 redundancy with the same model 1X00024H01

Accompanying Accessories: 19-inch rack tray, DIN rail adapter, dedicated connector

2. Substitution and Compatible Models

Same Model Interchange: 1X00024H01 (WH1-2FF) fully interchangeable, direct replacement

Downward Compatibility: Compatible with Ovation older 1X series power supplies (e.g., 1X00014H01 matching power supply)

Function Substitution: No fully substitutable model, Ovation system must match the original WH1-2FF series power supply

VI. Typical Application Scenarios

1. Thermal Power Generation

Used for boiler, turbine, generator control station I/O cabinets, providing stable 24VDC power supply for Ovation controllers, analog/digital I/O modules, temperature/pressure transmitters, valve positioners, compatible with high-temperature, high-dust, strong electromagnetic interference conditions, ensuring zero interruption of control power supply.

2. Petrochemical

Applied to refining units, reaction vessels, compressor units, distillation towers I/O stations, providing power supply for explosion-proof instruments, safety barriers, solenoid valves, emergency stop systems (ESD), supporting redundant configuration and hot-swappable maintenance, compatible with flammable and corrosive environments, ensuring continuous process operation.

3. Metallurgy / Cement Adapt to blast furnaces, steel rolling lines, kilns, and grinding machine control cabinets, capable of withstanding high temperatures, high dust, and strong vibrations, providing power for on-site sensors, motor control modules, and interlock protection circuits to ensure stable production processes and reliable safety interlocks.

4. Water treatment / Natural gas / Papermaking

Used in water treatment plants, natural gas gate stations, and paper mills' DCS systems, providing highly reliable 24VDC power for I/O modules, on-site instruments, and actuators, supporting remote alarms and centralized monitoring, and reducing maintenance costs.

VII. Maintenance and Selection Suggestions

1. Spare Parts Selection

For the core control station of the Ovation system, key I/O cabinets, and circuits with high reliability requirements, the original and brand-new 1X00024H01 should be selected first; for those with limited budgets, original refurbished parts can be used, with particular attention to testing output voltage accuracy, ripple, redundant switching, protection functions, and LED indicators; avoid using non-original replacement power supplies to prevent compatibility issues or system instability.

2. Daily Maintenance

Monthly: Check the LED status of the panel, clean the dust in the cabinet, ensure good heat dissipation and ventilation

Every 3 months: Check the installation tightness of the modules, whether the connectors are loose or oxidized, test the output voltage and ripple

Every 6 months: Verify the redundant switching function, remote alarm function, and check if the cooling air duct is blocked

Every year: Conduct comprehensive performance tests (load adjustment rate, linear adjustment rate, protection threshold), check the anti-corrosion coating

3. Upgrade and Expansion Suggestions

For new projects, dual redundant 1X00024H01 should be prioritized for configuration to ensure power supply reliability; for old systems with expansion or spare parts replacement, the same model should be matched to ensure complete compatibility with existing controllers, I/O modules, and cabinets, avoiding system failures caused by power supply mismatch.