Foxboro MMS3210021-000 - I/A Series 32-Channel Multi-Master Scanner Module

Foxboro MMS3210021-000 – I/A Series 32-Channel Multi-Master Scanner Module

In stock

Product Introduction:
The Foxboro MMS3210021-000 is a 32-channel multi-master scanner module for the Foxboro I/A Series Distributed Control System. The “MMS” stands for Multi-Master Scanner, “32” indicates 32 channels, “10021” identifies the specific configuration (typically 16 AI / 16 DI or similar), and “000” is the base revision. This module serves as a high-density I/O scanner that aggregates multiple field signals (analog and digital) into a single module, reducing the total number of slots required in the I/A Series chassis. The “multi-master” designation means the module can communicate with multiple I/A Series processors simultaneously, providing redundant communication paths. This is critical for safety and high-availability applications where a single communication failure must not cause loss of any I/O point.

Technical Specifications:
Board Type: Multi-Master Scanner Module
System: Foxboro I/A Series (Series 400)
Channels: 32 total channels (configurable as 16 AI + 16 DI, or 32 AI, or 32 DI)
Analog Inputs: 4-20mA, 0-10V, RTD (Pt100, Pt1000), Thermocouple (all types)
Digital Inputs: 24V DC, 48V DC, 120V AC (configurable per channel)
Resolution: 16-bit A/D conversion
Accuracy: +/- 0.1% of full scale
Update Rate: 100 milliseconds per scan cycle
Communication: Dual redundant paths to I/A Series processors (multi-master)
Isolation: 1500V RMS channel-to-channel and channel-to-ground
Power: 24V DC from I/A backplane
Form Factor: 6U I/A Series Eurocard
Operating Temperature: 0 to 60 degrees Celsius

Functional Features:
High-Density I/O: 32 channels in a single slot reduces chassis space and cost.
Multi-Master Communication: Dual redundant communication paths to multiple processors ensure no single point of failure.
Mixed Signal Support: Accepts analog (4-20mA, RTD, TC) and digital inputs on the same module.
Per-Channel Configuration: Each channel independently configurable for signal type, range, and filtering.
Fail-Safe Design: Inputs default to a safe state on loss of field power or communication.
LED Indicators: Per-channel LEDs show input status at a glance.
Watchdog Timer: Hardware watchdog detects communication loss and forces safe output.
Hot Swappable: Can be removed and replaced while the system is running.

Application Scenarios:
Large Process Plants: Monitors hundreds of field signals from a single chassis in boiler, turbine, or balance-of-plant systems.
Oil Refineries: Controls large process units with extensive I/O requirements.
Water Treatment: Monitors and controls dozens of pumps, valves, and sensors from one intelligent module.
Manufacturing Lines: Serves as the main I/O scanner for large production lines with hundreds of discrete and analog signals.

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