FBM207B high-performance analog output module

The FBM207B is a high-performance analog output module developed by Foxboro for its I/A Series Distributed Control System (DCS). It is designed to convert digital control signals from the DCS into precise analog output signals, enabling precise control of field actuators, valves, and variable frequency drives (VFDs) in industrial processes. Below is its detailed information:

1. Core Specifications

Output Channels: 8 independent analog output channels (fully isolated from each other and the backplane).
Supported Output Signals:
- Current signals: 4–20mA DC (sink/source configurable, maximum load resistance ≤750Ω).
- Voltage signals: 0–10V DC, 1–5V DC (output impedance ≤0.1Ω, ensuring stable voltage output under varying loads).
Resolution: 16-bit (plus sign bit), providing fine-grained control for high-precision applications (e.g., precision valve positioning).
Accuracy: ±0.05% of full scale (including linearity, hysteresis, and repeatability), with a temperature coefficient of ±20ppm/°C (minimizing drift in temperature-fluctuating environments).
Response Time: ≤5ms (from digital command to stable analog output), suitable for fast-response control loops (e.g., pressure or flow control in chemical reactors).
Power Supply: 24V DC ±10% (power consumption ≤8W, compatible with I/A Series rack power modules such as P0916JP).
Isolation Rating:
- Channel-to-channel isolation: ≥600V AC (1 minute).
- Module-to-backplane isolation: ≥2500V AC (1 minute), preventing ground loops and electromagnetic interference (EMI) in harsh industrial environments.