Technical Specifications
Note: Specifications are sourced from the official I/A Series FBM06 hardware documentation. Always verify compatibility with your specific system revision and Fieldbus configuration.
Key Features & Benefits
Combined Pulse Input and Analog Output Capability
The FBM06 integrates two distinct signal-handling functions on a single module: high-speed pulse counting for flow and speed measurement, and precision 0–20 mA output for analog control. This hybrid design reduces module count in the rack, simplifies wiring, and lowers overall system cost for applications that require both measurement types .
High-Speed Pulse Acquisition
With a maximum input frequency of 12,500 Hz, the FBM06 captures fast-changing pulse signals without data loss, making it suitable for turbine flowmeter totalization, rotational speed monitoring, and high-resolution counting applications. Software-configurable conversion times allow engineers to optimize the trade-off between resolution and update rate for each application .
Precision Analog Output with Configurable Fail-Safe
Each 0–20 mA output channel delivers ±0.05% accuracy with 12-bit resolution and a maximum load of 735 Ω. The module supports per-channel fail-safe configuration (Hold or Fallback) with configurable fallback data, ensuring that output loops behave predictably during Fieldbus faults or module replacement .
Redundant Fieldbus Architecture
The FBM06 independently connects to the redundant Fieldbus, providing dual communication paths to the control processor. If one Fieldbus segment fails, the module automatically switches to the alternate path, maintaining continuous data exchange without process interruption .
Channel-to-Channel Isolation
Each input and output channel is individually isolated and withstands 600 V AC for one minute between any channel and earth or between channels. This isolation prevents field faults, ground loops, and electrical noise from propagating between channels or damaging upstream electronics .
Output Bypass Support
An optional termination cable assembly provides built-in bypass jacks for each output channel. These jacks accept a bypass plug from the I/A Series Output Bypass Station or another external 20 mA source, allowing output signals to be maintained during module maintenance or replacement—ideal for critical control loops .
Recommended Related Models
Compatible I/A Series Components:
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Fieldbus Communication Modules: FCM10E, FCM2F2
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Fieldbus Expander Modules: FEM100
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Output Bypass Stations: For output maintenance support
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Termination Cable Assemblies: Including bypass jack option
Frequently Asked Questions (FAQ)
Q1: What is the primary function of the Foxboro P0400YG FBM06?
The FBM06 is a mixed-signal Fieldbus Module that combines four pulse input channels for frequency/count measurement and four 0–20 mA analog output channels for driving field actuators. It converts field signals to/from the redundant Fieldbus, enabling integrated flow measurement and analog control from a single module .
Q2: What types of sensors can connect to the FBM06 pulse inputs?
The pulse inputs accept signals from vortex meters, turbine meters, solid-state or electro-mechanical contacts, and other sensors with similar pulse outputs. The maximum input frequency is 12,500 Hz, with software-configurable conversion times of 0.1, 0.2, 0.5, or 1.0 seconds .
Q3: What is the output accuracy and resolution of the FBM06?
Each analog output channel provides ±0.05% of span accuracy (at 25°C) with 12-bit resolution and ±0.025% linearity error. The output range is 0–20.4 mA DC with a maximum load of 735 Ω .
Q4: How does the FBM06 handle fail-safe operation?
The module supports per-channel fail-safe configuration with options for Hold (maintain last output) or Fallback (output a configured fallback value) during Fieldbus faults. Fallback data is individually configurable per channel .
Q5: What is the purpose of the output bypass jacks?
The optional termination cable assembly includes built-in bypass jacks for each output channel. These accept a bypass plug from an I/A Series Output Bypass Station or external 20 mA source, allowing output signals to be maintained during module maintenance or replacement—critical for loops where output interruption is unacceptable .
Q6: Can the FBM06 be replaced without shutting down the system?
Yes. The FBM06 supports hot-swap replacement on an energized I/A Series baseplate. Field wiring, power, and communication cables remain undisturbed, and the redundant Fieldbus ensures no loss of communication during the swap .
Q7: What isolation does the FBM06 provide?
The module withstands 600 V AC for one minute between any channel and earth, or between any two channels, without damage. Each channel is individually isolated, providing fault containment and noise immunity .
Q8: What is the power consumption of the FBM06?
The module consumes 15 W maximum (12 W maximum heat dissipation) from a redundant 26–42 V DC supply. The pulse input channels require a separate 24 V DC ±10% supply at 30 mA DC maximum .
