Description
Manufacturer: Foxboro (Schneider Electric, formerly Invensys)
Part Number: P0924AS
Product Type: I/A Series 16-Channel Analog Output Module
Product Overview
The P0924AS is a high-density analog output I/O card for Foxboro I/A Series distributed control system. It outputs 4–20mA analog control signals to drive field final control elements, widely used in continuous process industries such as petrochemical, power, pulp & paper. This module supports hot swap for non-stop system maintenance in redundant DCS racks.
Technical Specifications
| Parameter | Value |
|---|---|
| Channel Count | 16 analog output channels |
| Output Signal | 4–20 mA, loop powered |
| Resolution | 12-bit |
| Accuracy | ±0.05% full scale at 25°C |
| Isolation | Channel-group isolation |
| Backplane Interface | I/A Series FBM bus |
| Operating Temperature | 0 °C ~ +60 °C |
| Storage Temperature | -40 °C ~ +85 °C |
| Mounting | Rack mount in I/A Series I/O assembly |
| Status Indicators | Module run, fault, channel diagnostic LEDs |
Key Features
- 16 high-precision 4–20mA analog outputs for valve positioners, dampers and VFD control.
- Hot swappable design; can be replaced without shutting down the control rack.
- Built-in per-channel diagnostics for open circuit, short circuit and overrange detection.
- Supports redundant I/A Series controller architecture for high availability process control.
- Hardware isolation reduces crosstalk and noise interference from field wiring.
- Standard I/A backplane connection for seamless integration with FBM racks.
Application Scenarios
- Petrochemical refining process control
- Power plant boiler and turbine DCS control
- Pulp & paper continuous production lines
- Chemical batch and continuous processes
- Water & wastewater treatment plant control
Installation & Maintenance Notes
- Verify loop resistance before commissioning to stay within module driving capacity.
- Use shielded twisted pair field cables; ground shield at one end only to avoid ground loops.
- Check LED status after power-up for module health and individual channel faults.
- Perform calibration periodically during plant shutdown.
- Confirm part compatibility with existing I/A backplane and controller firmware before replacement.
FAQ
Q: Is P0924AS hot-swappable? A: Yes, the module supports hot swap within the I/A Series rack for online replacement.
Q: What signal does P0924AS provide? A: 4–20mA analog output signals for process control final elements.
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