Output Interface 24VDC Redundant | Foxboro RH922VU HART
Manufacturer: Foxboro
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Part Number: RH922VU
Condition：New with Original Package
Product Type: Channel Isolated I/O
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Foxboro FBM215 RH922VU functions as a high-integrity, 8-channel isolated output interface for the Foxboro I/A Series and E-Series control platforms. This module executes the critical task of transmitting processed control signals from the Distributed Control System (DCS) to field-side actuators and positioners. By supporting both 4–20 mA analog signals and HART® digital communication, the RH922VU facilitates advanced asset management and real-time device diagnostics. We supply this component as 100% brand new and original, providing the essential reliability required for continuous operations in chemical refining, power generation, and water treatment sectors.
Technical Specifications
| Feature | Specification Details |
| Model Number | FBM215 RH922VU |
| Module Type | Output Communication Module (HART) |
| Channel Capacity | 8 Individually Isolated Channels |
| System Compatibility | Foxboro I/A Series / E-Series |
| Input Voltage | 24 VDC (Redundancy Supported) |
| Onboard Memory | 16 MB SDRAM / 32 MB Flash |
| Power Consumption | Max ~8.5 W per module |
| Communication Protocols | HART, Foxboro Proprietary, Modbus |
| Operating Temp | 0 to 60 deg C |
| Dimensions | 250 x 220 x 40 mm |
| Weight | 1.0 kg to 3.0 kg (Based on configuration) |
Engineering Advantages
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Total Channel Isolation: The RH922VU provides dedicated isolation for each output channel. This design eliminates common-mode noise and prevents a single field-side electrical fault from propagating to adjacent channels, ensuring the integrity of the remaining control loops.
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Zero-Downtime Maintenance: The module features a hot-swappable architecture. Maintenance personnel can replace a module without powering down the system or interrupting the process, significantly increasing overall operational efficiency.
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Fault-Tolerant Redundancy: When paired with redundant controllers, the RH922VU supports full fault-tolerant operation. It maintains stable signal output even during a primary processor or power supply failure, mitigating the risk of unscheduled facility shutdowns.
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Hybrid Digital/Analog Control: By overlaying HART communication on the 4–20 mA signal, the module enables remote calibration and performance monitoring of smart field devices. Engineers extract diagnostic data directly through the DCS, reducing the need for manual field inspections.
FAQs
Q: Does the RH922VU support redundant power supplies?
A: Yes. The module accepts a 24 VDC input and fully supports redundant power configurations to ensure continuous functionality in the event of a power source failure.
Q: Is this module compatible with both HART and Modbus?
A: The RH922VU natively supports HART and Foxboro proprietary protocols. Modbus support is available depending on the specific system software and gateway configuration utilized within your I/A Series environment.
Q: Can I use this module to replace an older FBM output card?
A: The RH922VU is designed for I/A Series and E-Series platforms. While it serves as a high-performance replacement for many legacy outputs, you should verify specific baseplate and software version compatibility before installation.
Q: Are these units shipped in original factory packaging?
A: Absolutely. We provide the RH922VU only as a 100% brand new unit, shipped in original Foxboro packaging with full factory documentation to ensure E-E-A-T compliance and long-term reliability.