NRD108031 TRVC070999000 BOTTOM Interface Module
ALSTOM NRD108031 / TRVC070999000 BOTTOM
Introduction to Interface Module**
This is a basic interface module applied in ALSTOM industrial control/turbine control/power station/rail transit system, usually used as a bottom board level (BOTTOM) module inside the cabinet, responsible for core tasks such as power distribution, signal input processing, and system communication support.
1、 Module positioning
Belonging to the Bottom Interface/Basic Support Module (BOTTOM Module)
Installed at the bottom layer of the control cabinet or system framework as a basic node
Integrated power conversion, signal interface, circuit protection, and processing unit
Used for connecting external sensors, actuators, controllers, etc
It is equivalent to the “underlying base” in the entire system, providing power and signal channels for other functional boards.
2、 Main functions
1. Power conversion and distribution
The module is equipped with a complete power circuit that can convert external input AC power (commonly 220V or 380V) into multiple DC voltages required by the system, such as:
+5V
+12V
+15V
+18V
+24V
These output voltages will be allocated to upper level CPUs, I/O boards, communication modules, etc.
This is one of the most important functions of the module.
2. Input interfaces for multiple signals
Can access various signals from external devices, such as:
Ordinary numerical input
thermocouple
thermistor
Voltage/current detection signal
The module will convert these signals into recognizable standard levels within the system.
3. Microcomputer control logic
Modules typically have small processing units inside to perform:
Input signal filtering
data processing
state analysis
Basic logical judgment
Provide a more stable and clean signal environment for the upper control system.
