Product Details
The Foxboro P0918HU, also cataloged as the P0918HU Industrial Power Module, operates as a dedicated hardware component for AC-to-DC conversion and internal bus power distribution within Foxboro control platforms. Configured to accept an input voltage of 90 to 264 VAC, the module delivers a regulated 24 VDC output (±5%) at up to 100 W maximum capacity with greater than 90% full-load efficiency. It maintains continuous power conversion across an operating temperature range of -20 to +60 deg C (-4 to +140 deg F).
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | P0918HU |
| Brand | Foxboro |
| Origin | USA |
| Weight | 0.9 lbs (0.41 kg) |
| Dimensions | Standard Foxboro Module Form Factor |
| Operating Temp | -20 to +60 deg C (-4 to +140 deg F) |
| Power Consumption | Input-dependent (> 90% efficiency at full load) |
| Input Voltage | 90 to 264 VAC |
| Output Voltage | 24 VDC ± 5% |
| Power Output | 100 W maximum |
| Mounting Type | Baseplate Mount |
DCS Process Control and Channel Isolation
The Foxboro P0918HU industrial power module incorporates high-frequency transformer isolation to decouple primary AC utility supplies from the downstream 24 VDC distribution bus. Designed to supply operational power for 4-20 mA HART loop protocol field devices and system I/O modules, the unit suppresses high-frequency ripple and common-mode line transients. Integrated channel-to-channel isolation prevents ground potential loops between field instrument grounds and backplane control circuits, ensuring signal stability under electrical noise conditions.
Frequently Asked Questions
Q: What happens to the 24 VDC output during an downstream over-load or short-circuit event?
A: The P0918HU contains active foldback over-current protection that clamps current draw to protect connected backplane logic modules from electrical damage.
Q: Can the P0918HU module be hot-swapped during active DCS operation?
A: Hot-swapping is permitted only when installed in dual-redundant baseplate configurations where an adjacent parallel power module maintains the 24 VDC rail load.
Field Installation Guidelines
- Confirm the primary AC power feed is locked out and de-energized prior to connecting input terminal wiring.
- Align the module card edges with the baseplate slots and push firmly until the mechanical locking latches engage fully.
- Route incoming AC power conductors in dedicated wireways separate from low-voltage DC signal and field loop cables.
- Attach the protective earth (PE) grounding lead directly to the main cabinet ground busbar to ensure proper EMI filtering performance.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Demystifying Open Platform Communication (OPC): The Backbone of Industrial Interoperability
Interoperability remains a cornerstone requirement for modern smart factories and process automation. Open Platform Communication (OPC) bridges the gap between disparate hardware platforms, control systems, and visualization software. By establishing a universal communication standard, OPC allows field controllers, SCADA platforms, and enterprise software from different vendors to exchange real-time data seamlessly.
Understanding Siemens PLC Memory Cards: MMC, SMC, and SD Solutions in Industrial Automation
Memory management plays a pivotal role in maintaining control system reliability across modern manufacturing plants. Industrial control systems rely on specialized memory cards to store project logic, firmware updates, and retentive system data. Siemens uses several memory architectures, including Micro Memory Cards (MMC) and SIMATIC Memory Cards (SMC). Engineers must understand these hardware variations to ensure zero data loss and minimize downtime during maintenance routines.
Redefining Control Systems: The Rise of Flexible I/O Modules in Industrial Automation
Conventional input-output architectures often limit engineering agility and inflate long-term inventory costs. Today, Flexible Input/Output Modules (FIOM) are transforming how control system engineers design, commission, and maintain automation infrastructure. By allowing individual channel software configuration, FIOM technology bridges the gap between rigid hardware design and dynamic plant requirements.