FOXBORO P0924CV AO-3 is a compact 4-channel analog output module of the Foxboro I/A Series distributed control system (DCS) under Schneider Electric. It is specially designed for industrial process control applications. Its core function is to accurately convert digital control signals from the DCS into standard 4–20 mA DC analog signals to drive field actuators such as valve positioners and actuators.
The module features channel-to-channel electrical isolation, excellent anti-interference capability and fault self-diagnosis functions, enabling long-term stable operation in harsh industrial environments including petrochemical, power, metallurgy and other industries.It is compatible with I/A Series software v8.2–v8.8 and Control Core Services v9.0 and above. It supports hot-swapping and redundant configuration, which maximizes the continuity and reliability of the control system, making it a core I/O component for small and medium-sized process control loops.
Technical Specifications
| Parameter Category | Detailed Specification |
|---|---|
| Core Specification | 4-channel independent analog output (AO), model identifier: AO-3 |
| Output Signal | 4–20 mA DC (active output, supports loop power supply) |
| Accuracy & Resolution | Accuracy: ±0.03% of full scale; Resolution: 15 bits |
| Isolation Performance | Electrical isolation between channels, field side and system side; withstands 600 VAC common-mode voltage for 1 minute |
| Power Requirements | 24 VDC redundant power supply (+5%/-10%); max power consumption: 8.4 W; max heat dissipation: 5.6 W |
| Load Capability | Max driving load per channel: 750 Ω @24 VDC |
| Response & Update | Channel update rate: 100 ms; step response: < 100 ms |
| Diagnostic Functions | Open-circuit detection, short-circuit alarm, over-range indication, module self-test |
| Environmental Adaptability | Operating temperature: -40°C to 70°C; relative humidity: 0–95% (non-condensing); protection class: IP20 |
| Mechanical Specification | Width: 45 mm; height: 102 mm (114 mm including mounting lugs); depth: 115 mm; weight: approx. 0.32 kg |
| Compliance & Certification | Complies with industrial EMC and safety standards; meets SIL 2 functional safety requirements |
Applications
This module is widely used in industrial processes requiring precise analog control. Typical applications include:
- Opening control of control valves and shut-off valves in petrochemical plants;
- Position adjustment of dampers and baffles in boiler combustion systems in the power industry;
- Actuator driving for temperature and pressure loops in metallurgical processes;
- Speed control of dosing pumps and mixers in water treatment systems;
Flow and level regulation in high-precision production processes such as pharmaceuticals and food processing.
Analog Output Modules of the Same Brand Series (10 Models)
- FBM04 P0400YE (4AI/4AO mixed module, 0–20 mA)
- FBM05 P0400YF (Redundant 4AI/4AO mixed module, 0–20 mA)
- FBM214 P0922VT (8-channel analog input/output module, HART supported)
- FBM232 P0926GW (16-channel intelligent AO module, HART pass-through, redundancy supported)
- FBM244 P0924XX (4AI/4AO module, HART protocol supported)
- FBM245 P0925XX (Redundant 4AI/4AO module, HART compatible)
- FBM18 P0400YV (8-channel AO module, 0–10 VDC/4–20 mA selectable)
- FBM217 P0914TR (High-precision AO module for critical control loops)
- FBM204 P0924DB (Compact 4-channel AO module, CIU series)
- FBM214B P0924JH (Enhanced 8-channel AI/AO mixed module, channel isolation)
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