FOXBORO X440-G2-24FX-GE4 Flexible I/O Module

Description

1. Core Overview & Positioning

2. Key Features & Functions

• Flexible Channel Configuration:​ Each of the 24 channels can be individually configured via software for a wide range of functions:
  • Analog Input (AI):​ 4-20mA, 0-20mA, 0-5V, 0-10V, ±5V, ±10V, RTD (Pt100, Pt1000, Ni120), thermocouple (J, K, T, E, R, S, B, N, C).
  • Analog Output (AO):​ 4-20mA, 0-20mA, 0-5V, 0-10V, ±5V, ±10V.
  • Digital Input (DI):​ Contact input, 24/48V DC, 120/240V AC.
  • Digital Output (DO):​ Relay output (Form A, Form C), 24V DC, 120/240V AC.
• High Density:​ 24 channels in a single module slot, optimizing cabinet space and reducing wiring complexity.
• Advanced Diagnostics:​ Comprehensive channel-level and module-level diagnostics, including open/short circuit detection, out-of-range alarms, and hardware fault reporting.
• Hot-Swappable:​ Designed for online insertion and removal in a live system (requires compatible baseplate and carrier), minimizing downtime for maintenance.
• Fieldbus Communication:​ Connects to the I/A Series DCS via Fieldbus​ (e.g., Foxboro’s proprietary bus or industry-standard protocols) for deterministic, high-speed data exchange with controllers.
• Intelligent Signal Processing:​ Includes built-in scaling, linearization, filtering, and alarm generation capabilities at the channel level, offloading processing from the main controller.

3. Model Number Breakdown & Specifications

• Number of Channels:​ 24, individually configurable.
• Resolution:​ 16-bit for analog signals.
• Accuracy:​ Typically ±0.05% of span for analog inputs.
• Update Rate:​ Configurable per channel, typically up to 10 ms for a group of channels.
• Isolation:​ Channel-to-channel and channel-to-system isolation (e.g., 500V).
• Power Supply:​ Powered from the fieldbus network via the carrier/baseplate.
• Operating Temperature:​ 0°C to 60°C (32°F to 140°F).
• Mounting:​ Plugs into a Foxboro I/O carrier module (e.g., part of a CP40/60/80 series I/O pack).

4. System Integration & Configuration

• Physical Integration:​ The module is installed into a Foxboro I/O carrier or baseplate​ mounted on a DIN rail or panel. This carrier provides power, communication, and termination for field wiring.
• Communication Path:

  Field Devices <-> X440-G2-24FX-GE4 <-> I/O Carrier <-> Fieldbus <-> Foxboro Controller (e.g., CP270/370) <-> I/A Series Workstation

• Engineering Configuration:​ Fully configured using Foxboro’s I/A Series engineering tools​ (such as Foxboro Control Core​ software). The configuration process involves:
  1. Adding the hardware to the system configuration.
  2. Configuring each channel’s type (AI/AO/DI/DO), range, scaling, filtering, and alarm limits.
  3. Linking each configured channel to a process variable (PV) in the control logic (e.g., a block in a Control Module).
• Role:​ Serves as the primary interface for a diverse set of field instruments (transmitters, valves, switches) to the Foxboro DCS, enabling data acquisition for monitoring and control outputs for actuation.

5. Typical Applications

• Process Skid Integration:​ Where a mix of analog and digital signals from a packaged skid needs to be connected.
• Batch Process Control:​ Where I/O requirements can vary between different production recipes.
• Retrofit and Modernization Projects:​ To replace multiple old, single-function I/O cards with fewer, flexible modules, saving space and cost.
• Any application requiring a high density of mixed signal types​ in a confined panel space.