Foxboro H92A049E0700 (H92 series) DCS Analog Input Module

Foxboro H92A049E0700 (H92 Series) I/A Series DCS Analog Input Module
I. Basic Product Positioning
Brand: Foxboro (now under Schneider), compatible with the classic I/A Series distributed control system
Full model: H92A049E0700, belonging to the H92 high-density field I/O acquisition sub-card, responsible for collecting on-site transducer signals, signal conditioning, analog-to-digital conversion, and uploading data to the backplane
Product Form: Standard rack-mounted card-type, inserted into the FBM207/FBM207B I/O expansion base for operation, supporting single card, dual redundant fault-tolerant configuration
Supply Status: The original factory has discontinued production. The market supply is new original equipment inventory, disassembled fully functional test pieces, and refurbished spare parts for maintenance.

Core Hardware and Channel Specifications
1. Signal Acquisition Capability
Standard Signals: 4–20mA two-wire transmitters (pressure, temperature, flow, level), compatible with active/passive loop power supply
Channel Configuration: Multiple channels of independent isolation acquisition, 16-bit high-precision A/D conversion, typical accuracy ±0.1% FS range error
Native support for HART protocol transmission, capable of reading transmitter equipment diagnostics, range, serial number, fault information, compatible with intelligent instrument asset management
2. Electrical Power Supply
Power Supply Method: Powered by the backplane of the I/A rack (+5V, ±15VDC), the overall power consumption is approximately 7W
Loop Power Supply: Built-in 24V isolation power supply on the board, directly supplies power to two-wire pressure/temperature transmitters, no external power supply required
3. Isolation Protection
Channel-to-ground, channel-to-channel 500VAC electrical isolation, resisting strong electromagnetic interference from frequency converters, large power motors, and surge impacts
Input circuits come with hardware protection for overcurrent, short circuit, and reverse connection, a single channel failure does not affect the other measurement points of the entire card

Communication and System Bus
Internal Backplane Bus: Foxboro I/A proprietary high-speed parallel backplane bus, interacting with FBM base, controller for real-time data acquisition, configuration parameters, alarm status
Upper-level System Integration: Data is forwarded via the FBM base to the I/A controller (CP60, CP270, etc.), then sent to the operation station, SCADA, and factory MES system
Diagnostic Communication: Board self-check codes, open circuit, overrange, HART instrument faults are all uploaded to the upper-level software, quickly locating problems at the field measurement points
IV. Environmental Mechanical Parameters Table
Parameter Item Standard Specification
Operating Temperature 0℃ ~ +70℃; Extreme temperature model: -40℃ ~ +70℃
Storage Temperature -55℃ ~ +85℃
Humidity 5%–95% RH without condensation; PCB with full three-proof anti-corrosion coating
Protection Grade Module body: IP20; Matching sealed junction box: IP65
Installation Standard DIN rail frame, FBM207 series base slot
Certification CE, UL61010, CSA industrial safety explosion-proof certification