The AD908CC is a 1-meter dedicated connection cable compatible with the FBM237 module. It belongs to Schneider Electric Foxboro I/A Series DCS system and is designed for signal transmission between the FBM237 module and Terminal Assembly (TA). Made of low-smoke zero-halogen (LSZH) material, it is suitable for G3-class harsh industrial environments and supports redundant configurations. This cable ensures stable transmission of 8-channel isolated analog output signals from the FBM237 module, delivering a reliable connection solution for industrial process control.
Technical Specifications
Model: AD908CC FBM237 Cable Plus 1 Meter W
Compatible Module: Foxboro FBM237 0-20mA isolated output module (single module / redundant module)
Length: 1 meter
Cable Material: Low-smoke zero-halogen (LSZH), featuring excellent flame retardancy, low smoke emission and zero halogen release, in compliance with industrial safety standards
Connection Interface: Dedicated interface matching the FBM237 module base and Terminal Assembly (TA), ensuring electrical connection stability
Electrical Characteristics: Supports signal transmission with 8-channel independent isolation; electrical isolation is implemented between channels and from ground, withstanding 600V AC voltage for 1 minute without damage
Transmission Performance: Compatible with 2Mbps module fieldbus communication, featuring low signal transmission latency to ensure rapid response of control commands
Operating Temperature: -40℃ to +70℃, suitable for harsh industrial environments
Structural and Design Features
- Dedicated Adaptation Design: Custom-built for the FBM237 module, it precisely meets the connection requirements of the module base and Terminal Assembly (TA). This design ensures lossless signal transmission and prevents system faults caused by wiring errors.
- Redundancy Compatibility: Compatible with the FBM237 redundant module configuration. When redundant module pairs are adopted, it works with redundant adapters (e.g., RH916QD) to ensure signal continuity during communication path switching and enhance system reliability.
- Safe and Reliable Material: The low-smoke zero-halogen (LSZH) material emits minimal smoke and no toxic halogen gases when burned at high temperatures. It complies with fire safety requirements for industrial premises, making it particularly suitable for enclosed cabinets, personnel-intensive areas, or industrial environments with poor ventilation.
- Physical Protection: The cable is resistant to electromagnetic interference, vibration, and corrosion, and can withstand harsh on-site conditions such as dust, humidity, and vibration. It meets the G3-class environmental requirements specified in the ISA S71.04 standard.
III. Core Functional Features
- Stable Signal Transmission: Ensures the accurate transmission of 8-channel 0-20mA isolated analog output signals from the FBM237 module. Each channel is independently isolated to avoid signal crosstalk and guarantee control signal accuracy, with an output precision of ±0.05% of the full scale and 13-bit resolution.
- Easy Maintenance: Combined with the bypass jacks of the Terminal Assembly, it can maintain output signals during FBM237 module maintenance when using I/A Series output bypass stations (e.g., P0900HJ), eliminating the need for system shutdown and improving system availability.
- Flexible Installation: The 1-meter length is suitable for local or short-distance installation scenarios. It supports the installation of Terminal Assemblies either inside the cabinet or in adjacent cabinets, providing flexibility for system layout and adapting to the installation requirements of different industrial sites.
- Compliance Assurance: Complies with relevant standards including the European EMC Directive, Low Voltage Directive, and ATEX Directive. It has obtained UL/UL-C certification and meets the operational requirements for hazardous locations classified as Class I, Groups A-D; Division 2, ensuring safe and compliant system operation.
Applicable Scenarios and Applications
- Industrial Process Control: Suitable for process control systems in industries such as petrochemicals, electric power, and metallurgy. It connects the FBM237 module to field actuators (e.g., valves, motors, transmitters), enabling precise control of parameters including temperature, pressure, and flow rate.
- Redundant Control Systems: For critical control links requiring high reliability (e.g., chemical reactor and power unit control), it works with FBM237 redundant module pairs to ensure uninterrupted operation of the control system during module failures or communication path switching.
- Harsh Environment Applications: Boasting excellent environmental adaptability, it can be used in G3-class harsh environments such as outdoor cabinets, dusty production workshops, and high/low-temperature working conditions, ensuring stable and reliable signal connections.
Installation and Maintenance Guidelines
- Installation Specifications: Must be installed in conjunction with the FBM237 module and compatible Terminal Assemblies (e.g., RH917QZ Terminal Assembly with bypass jacks). Redundant modules shall be installed in adjacent odd-even positions on the base and used with redundant adapters.
- Wiring Requirements: Ensure secure cable connections during installation to prevent signal interruption caused by loose connections. Meanwhile, comply with electrical safety specifications to avoid potential risks of short circuits or electric leakage.
- Maintenance Recommendations: Regularly inspect the cable appearance and replace it promptly if damage or aging is detected. During module maintenance, the bypass function can be utilized to maintain output without disconnecting this cable, improving maintenance efficiency.
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