Description
Product Core Brief
- Model: 1X00024H01
- Brand: Westinghouse / Emerson Ovation
- Series: 1X00024 power family, often marked WH1-2FF
- Core Function: Converts incoming AC to a steady 24VDC rail that feeds control and interface hardware inside an Ovation cabinet.
- Product Type: AC-DC industrial power supply module
- Key Specs: 100 to 240 VAC 50/60 Hz input | 24 VDC output | up to about 500 W
- Condition: New Surplus / Refurbished, nameplate photo required
Product Introduction
WESTINGHOUSE 1X00024H01 is a cabinet power supply, not an I/O card. It takes 100 to 240 VAC in and holds a 24 VDC rail for control hardware, commonly listed around 500 W output with roughly 8 to 12 A input depending on line voltage.
The value is uptime, not features. A sagging supply causes random module resets, ghost I/O faults and failed transfers that look like card failures. Many suppliers list it as a generic Ovation module with no spec, which is useless during a real outage. Confirm the rail, wattage and mounting before buying.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 1X00024H01 |
| Common Marking | WH1-2FF |
| Platform | Ovation DCS, Westinghouse and Emerson heritage |
| Product Class | AC-DC power supply module |
| Input Voltage | 100 to 240 VAC, 50/60 Hz |
| Input Current | About 8 to 12 A depending on line voltage |
| Output Voltage | 24 VDC |
| Output Power | Up to about 500 W |
| Sibling Numbers | 1X00024H03, 1X00024H04, 1X00024H06 appear in common spare lists |
| Typical Failure Signs | Random module resets, unstable rail under load, no output, fan noise, burnt smell |
| Unverified Claims | Analog input card, digital output card, controller CPU, backplane powered module |
| Verification Method | Confirm nameplate, rail voltage, wattage, terminal layout and cooling against cabinet drawings |
Specs circulate mainly through reseller write-ups, so validate against your own cabinet documentation before energizing.
Quality Control Process
Power supplies get loaded, not just powered up.
- Nameplate and marking match. Confirm WH1-2FF and the exact suffix, since sibling numbers in the same family are not always interchangeable.
- No-load voltage check with a Fluke multimeter. Verify a stable 24 VDC before connecting anything valuable.
- Load bank test at 60 to 80 percent rated output. Hold it for at least 30 minutes and watch for drift or shutdown.
- Ripple measurement with an oscilloscope. High ripple on the DC rail mimics bad I/O and kills optocoupler life.
- Thermal and fan check. Feel the heatsink and listen for bearing noise, since heat is the main killer of aging supplies.
- Insulation and ground check with a Megger on the AC side before installing in a live cabinet.
- ESD and dry pack. Ship in anti-static bags with desiccant, especially for pulled surplus units.
I once replaced two I/O cards on a unit with random faults. The supply rail was dropping 3V during large fan starts. One supply fixed it.
Replacement Pitfall Guide
❗ Buying it as an I/O card. Plenty of spare lists dump this number next to analog input and digital output modules with no description at all. It is a supply. Read the nameplate.
❗ Undersizing the replacement. A generic 24V 200W substitute may idle fine then shut down when solenoids and fans pull together. Total every load, then add headroom.
❗ Ignoring ripple and grounding. A noisy rail creates phantom I/O faults and comms errors. Keep the cabinet ground single pointed and do not create ground loops between the supply chassis and field shields.
❗ Assuming sibling numbers swap freely. 1X00024H03, H04 and H06 show up in the same spare lists, but terminal layout, mounting and wattage can differ. Verify before dropping it in.
❗ Trusting flat price claims. Listings showing one yuan per unit, unlimited supply and instant shipping are placeholders, not real offers. Ask for a nameplate photo and a load test report.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| WESTINGHOUSE 1X00024H01 | Refurbished same part | Needs Verification | Confirm WH1-2FF marking, rail voltage, load test and fan condition |
| WESTINGHOUSE 1X00024H01 | 1X00024H03 | Needs Verification | Same family listing, check terminal layout, wattage and mounting |
| WESTINGHOUSE 1X00024H01 | 1X00024H04 | Needs Verification | Verify input range and output current before swap |
| WESTINGHOUSE 1X00024H01 | 1X00024H06 | Needs Verification | Confirm cooling requirements and cabinet fit |
| WESTINGHOUSE 1X00024H01 | Generic 24VDC 500W DIN rail supply | Needs Adaptation | Requires headroom check, ripple review and possible rewiring |
| WESTINGHOUSE 1X00024H01 | Dual redundant supply with diode ORing | Needs Adaptation | Improves availability, adds heat and needs separate branch fusing |
Benchmark references
- Acceptance criterion: rail stays within about 5 percent of 24VDC from no load to full load with no shutdown during a 30 minute burn-in.
- Ripple target: under roughly 100mV peak to peak at rated load, measured with an oscilloscope.
