The FOXBORO AD908AE is a dedicated terminal block cable launched by FOXBORO, designed specifically for the FBM203 Resistance Temperature Detector (RTD) input module. It is primarily used for signal transmission and physical connection between the FBM203 module and DIN rail-mounted Terminal Assemblies (TA) or chassis-mounted Terminal Assemblies (TA). It provides a stable and reliable wiring solution for the 8 RTD input channels of the FBM203 module, ensuring the accurate acquisition and transmission of temperature signals in industrial sites. Suitable for harsh industrial environments, it supports rapid system maintenance and meets signal isolation requirements, serving as a key accessory for the wiring of the FBM203 module in the Foxboro Evo™ Process Automation System.
Core Compatibility and Functional Orientation
Compatible Modules and Systems
Exclusively matched with the FOXBORO FBM203/b/c/d series RTD input modules, it is compatible with Foxboro Evo Control Core Service Software and I/A Series Software Version 8.0 and above. It adapts to the field I/O connection architecture of the 200-series FBM backplanes, and can replace the wiring solutions of traditional 100-series FBM modules, enabling reliable access of field RTD sensor signals to FBM modules.
Core Functions
Serving as the connection medium between the FBM203 module and Terminal Assemblies (TA), it supports signal transmission for 2-wire, 3-wire (FBM203/b/c) or 4-wire (FBM203d) RTD sensor inputs. Each channel maintains electrical isolation to avoid signal interference, ensuring accurate conversion of signals within different resistance ranges such as 0–320Ω (FBM203/203d) and 0–640Ω (FBM203b). Combined with the sigma-delta data conversion technology of the FBM203, it improves temperature measurement accuracy.
Maintenance Convenience
Adopting a modular wiring design, it enables hot-swapping of the FBM203 module after connection. When replacing the module, there is no need to remove field wiring, power supply or communication cables, which greatly shortens the system downtime for maintenance and improves the continuous operation capability of industrial automation systems.
Technical Specifications and Physical Characteristics
- Compatible Terminal Assemblies: DIN rail-mounted TA (polyamide/polyvinyl chloride material, compression screw type/ring terminal type); chassis-mounted TA (FBM203/b/c only, polycarbonate material, compression screw type)
- Signal Compatibility: Supports 2-wire/3-wire/4-wire RTD inputs, adapts to the resistance range of each channel of FBM203 series modules, and is compatible with various RTD sensor inputs such as 0–320Ω, 0–640Ω and 0–30Ω
- Electrical Characteristics: Meets the requirements for electrical isolation between FBM203 channels, resists electromagnetic interference, complies with signal transmission standards for industrial automation systems, and ensures the stability and accuracy of signal conversion
- Physical Structure: Made of durable cable materials, equipped with dedicated terminal blocks, compliant with DIN rail installation specifications. The length is adapted to the installation distance between FBM modules and Terminal Assemblies, supporting flexible on-site routing
- Environmental Adaptability: Suitable for G3-class harsh industrial environments specified in the ISA S71.04 standard, it can operate stably in industrial cabinets and withstand on-site working conditions such as vibration, dust and temperature fluctuations
Installation and Application Advantages
Installation Method
It can be used with DIN rail-mounted Terminal Assemblies or directly adapted to the field I/O connectors of 200-series backplanes, supporting local or remote field wiring connections. It is compatible with the installation architecture of FBM modules on DIN rail-mounted modular backplanes, where a single backplane can accommodate up to 8 FBM modules, ensuring neat wiring and easy expansion.
Application Scenarios
It is widely used in industrial sectors requiring high-precision temperature monitoring such as petrochemicals, electric power, metallurgy, and pharmaceuticals. It is especially suitable for scenarios where the FBM203 module is deployed to collect signals from multiple RTD sensors, including real-time monitoring and control systems for critical parameters such as reactor temperature, pipeline temperature, and equipment chamber temperature.
Function Expansion
Working in conjunction with the FBM203 module’s configurable functions (e.g., conversion time and rate-of-change limiting), the AD908AE terminal block cable ensures parameter stability during signal transmission. It helps the system achieve optimized configuration of data conversion and reduces the impact of process noise on measurement results.
System Compatibility and Maintenance Guidelines
Software Compatibility
It supports Foxboro Evo Control Core Service Software Version 9.0 and above, as well as I/A Series® Software Versions 8.0–8.8. Note that the FBM203c module must be used with Control Core Service Software Version 9.0 or higher.
Maintenance Precautions
- Ensure terminal blocks are securely fastened during installation to prevent poor contact.
- Regularly inspect the cable sheath and terminals for damage to avoid signal transmission anomalies.
- Follow system operating specifications when performing hot-swapping of FBM modules to ensure personnel and equipment safety.
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