FBM224 P0926GG digital input/output (I/O) mixed module

The FBM224 P0926GG is a digital input/output (I/O) mixed module developed by Foxboro for its I/A Series Distributed Control System (DCS). It integrates both digital input and output functions in a single module, enabling centralized acquisition of field switching signals and execution of control commands, which is ideal for space-constrained industrial control cabinets. Below is its detailed information:

1. Core Functions

Hybrid Digital I/O Operation: Combines digital input and output functions to simultaneously collect "on/off" status signals (e.g., from limit switches, buttons) and send control signals (e.g., to relays, alarms) for streamlined system integration.
Signal Isolation & Protection: Provides channel-to-channel and module-to-backplane isolation to prevent interference from industrial electrical noise and ground loops. It also includes short-circuit protection for output channels to safeguard connected devices and the module itself.
Real-Time Status Monitoring: Feeds back input signal status (e.g., "normal/fault") and output execution results (e.g., "on/off") to the I/A Series DCS, allowing operators to verify the integrity of field-device communication and control logic.
Self-Diagnostic Capability: Monitors module power supply, channel circuit continuity, and output overloads in real time. Faults (such as open input lines or shorted outputs) trigger local LED alerts and upload diagnostic data to the DCS for rapid troubleshooting.

2. Technical Specifications

Category	Specific Parameters
I/O Configuration	- Digital Input Channels: 16 independent channels- Digital Output Channels: 8 independent channels
Supported Input Signals	Dry contact signals (normally open/NC) or low-voltage DC signals (24VDC, "on" threshold: 18–30VDC, "off" threshold: 0–5VDC)
Supported Output Signals	Relay outputs (normally open contacts) or solid-state outputs (24VDC, sink/source configurable)
Input Response Time	≤1ms (captures transient switching signals, e.g., emergency stop triggers)
Output Load Capacity	- Relay outputs: 250V AC/30V DC, 5A (resistive load)- Solid-state outputs: 24VDC, 1A per channel
Isolation Performance	- Channel-to-channel isolation: ≥1000V AC (1 minute)- Module-to-backplane isolation: ≥2500V AC (1 minute)
Power Supply	24VDC ±10% (typical power consumption: ≤6W)
Operating Temperature	-40°C to 70°C (suitable for harsh environments like petrochemical plants, power stations)
Storage Temperature	-40°C to 85°C