FOXBORO P0926GU (a digital I/O interface module) and FBM230 (a high-density analog input module) are key I/O components of the I/A Series DCS, offering reliable signal processing and seamless compatibility with FOXBORO DCS workstations.
Technical Parameters of FOXBORO P0926GU, FBM230
Brand: FOXBORO (Emerson Electric Co.)
Product Series: I/A Series Distributed Control System (DCS) I/O Modules
Length: 132 mm (millimeters) for P0926GU; 145 mm (millimeters) for FBM230
Width: 86 mm (millimeters) for P0926GU; 92 mm (millimeters) for FBM230
Height: 124 mm (millimeters) for P0926GU; 130 mm (millimeters) for FBM230
Installation Depth: 102 mm (millimeters) for P0926GU; 110 mm (millimeters) for FBM230 (including connector extension)
Product Models: P0926GU, FBM230
Module Type: P0926GU - Digital I/O Interface Module; FBM230 - High-Density Analog Input Module
Channel Quantity: P0926GU - 16 digital input channels + 16 digital output channels; FBM230 - 32 single-ended analog input channels
Analog Input Range (FBM230): Configurable, supporting 4-20 mA, 0-10 V, ±5 V, ±10 V
Accuracy (FBM230): ±0.05% of full scale (FS) at 25°C
Response Time: P0926GU - Digital I/O response time ≤ 1 ms; FBM230 - Analog input response time ≤ 250 μs
Communication Protocol: Both support FOXBORO I/A Series Bus Protocol, compatible with HART protocol (FBM230 optional)
Compatibility: Suitable for FOXBORO I/A Series DCS, compatible with AW51B, AW71B workstations
Configuration Software: Supported by FOXBORO Control Configuration Environment (CCE)
Net Weight: 390 g (grams) for P0926GU; 430 g (grams) for FBM230
Gross Weight (including packaging): 540 g (grams) for P0926GU; 580 g (grams) for FBM230
Operating Temperature Range: -20°C to +65°C (no condensation) for both models
Storage Temperature Range: -40°C to +85°C for both models
Operating Humidity Range: 5% to 95% relative humidity (no condensation) for both models
Temperature Resistance Standard: Both comply with IEC 60068-2-1 (low temperature) and IEC 60068-2-2 (high temperature) standards 
Power Input Type: DC (Direct Current) input for both models
Rated Input Voltage: 24 V DC (allowable fluctuation range: 18 V DC to 30 V DC) for both models
Input Current: Typical operating current 0.4 A, maximum inrush current 0.8 A for P0926GU; Typical operating current 0.5 A, maximum inrush current 1.0 A for FBM23
Special Input (P0926GU): Digital input - dry contact or 24 V DC voltage signal, input impedance ≥ 10 kΩ
Special Input (FBM230): Analog input - differential or single-ended, input impedance ≥ 1 MΩ (voltage input), ≤ 250 Ω (current input)
Wiring Method: Screw terminal wiring, supporting shielded cable connection for anti-interference (both models)
Output Type (P0926GU): Digital transistor output, 24 V DC
Output Type (FBM230): No direct external output; data transmitted to DCS via backplane bus
Maximum Output Current (P0926GU): 0.5 A per channel, 4 A total per module
Output Protection: Overcurrent protection, short-circuit protection (P0926GU); Overvoltage protection, surge protection (FBM230)
Diagnostic Output: Built-in LED indicators (power, channel status, module fault) for real-time operation feedback (both models)
Alarm Output: Supports power failure, signal abnormal, module fault alarms; alarm signals transmitted to DCS via bus (both models)
