Alstom BCEA1 TERMINAL BOARD OF 8 ANALOGUE INPUT SIGNALS

Alstom BCEA1 TERMINAL BOARD OF 8 ANALOGUE INPUT SIGNALS

Product Overview

The Alstom BCEA1 terminal board is a core component designed by Alstom specifically for the conversion and adaptation of 8-channel analog input signals in industrial automation control systems. Its main functions include safe conversion, terminal adaptation, and low distortion regular transmission of weak analog input signals in industrial sites. This terminal board serves as a key signal bridge between the control system and analog sensors, capable of centralized conversion and standardized wiring of 8 continuous analog input signals (such as temperature, pressure, and flow sensor signals). It achieves precise docking with upper level controllers (such as PLC/DCS) through standardized terminal interfaces, and has core characteristics such as enhanced shielding and anti-interference, signal isolation and fidelity, ensuring the stability and accuracy of weak analog signal transmission. It adopts industrial grade high-precision terminals and reinforced insulation shielding design, with a compact structure and easy installation. It is widely integrated into the front-end of automation control scenarios with high requirements for analog signal transmission quality, such as energy generation, petrochemicals, and precision manufacturing, providing a basic guarantee for the orderly access and high-quality transmission of system analog signals.

Specification parameters

Based on the technical standards of Alstom Industrial Automation series products and the general specifications for analog input signal conversion, the core specification parameters of Alstom BCEA1 8-channel analog input signal terminal board are as follows:

-Job Description: 8-channel analog input signal dedicated terminal board, only responsible for signal conversion and adaptation, without signal processing function

-Adaptive signal types: Supports voltage type (0-5V, 0-10V), current type (4-20mA, 0-20mA) analog signal access, compatible with mainstream analog sensor signals

-Terminal quantity: 8 input terminals+2 common terminals (adapted for voltage/current signals separately)+2 auxiliary power terminals, totaling 12 standardized terminals

-Protection level: IP65, with dustproof and anti spray water capabilities, suitable for harsh industrial site environments

-Physical dimensions: 90mm x 70mm x 38mm (length x width x height), standard rail mounted, compatible with general control cabinets

-Terminal type: high-precision spring type terminal block, rated wire diameter of 0.14-2.5mm ², firmly connected and with low contact impedance

-Compatible with Alstom's full range of PLCs and mainstream industrial controller analog input modules, with excellent compatibility

-Working environment: temperature -20 ℃~60 ℃, relative humidity ≤ 90% RH (no condensation); Storage temperature -30 ℃~70 ℃

-Insulation level: The insulation voltage between terminals and between terminals and the shell is ≥ 2500VAC, the insulation resistance is ≥ 100M Ω (500V DC), and the isolation voltage between channels is ≥ 1500VDC

-Rated parameters: Single terminal rated carrying current ≤ 3A, suitable for conventional analog signal transmission requirements; The auxiliary power supply supports 24VDC ± 10% output and supplies power to passive analog sensors

-Electromagnetic compatibility: Complies with the IEC 61000-4 series standards, has strong resistance to electromagnetic interference, and signal transmission distortion is ≤ 0.1%

-Mechanical strength: Terminal insertion and extraction life ≥ 100 times, tightening torque 0.4~0.6N · m, with excellent mechanical stability

-Wiring distance: It is recommended that the wiring distance for analog signals should not exceed 20 meters. If it exceeds this distance, a signal amplifier should be configured

Performance characteristics

-8-channel precise analog signal conversion: specially designed for 8-channel analog input signals, with regular terminal layout, each signal is independently converted and isolated between channels, which can effectively avoid analog signal crosstalk and ensure low distortion and accuracy of signal transmission.

-Enhanced shielding and anti-interference: Adopting a fully metal shielding shell and high-grade insulation material, combined with shielded cable adaptation design, it can effectively block electromagnetic interference and ground potential difference in industrial sites, ensuring the transmission purity of weak analog signals.

-High reliability and signal fidelity: Select high-precision low contact impedance terminals to reduce signal transmission losses; It has excellent temperature and humidity adaptability and can work stably in a wide temperature range of -20 ℃~60 ℃ for a long time, avoiding signal drift caused by environmental factors.

-Flexible adaptation and convenient integration: compatible with multiple analog signal types such as voltage and current, it can adapt to different brands of analog sensors without additional configuration; Standardized guide rail installation design allows for quick integration into existing control cabinet layouts, resulting in high installation efficiency.

-Standardized wiring and convenient operation and maintenance: Centralized terminal layout enables regular wiring of 8 analog signals, simplifying the complexity of on-site wiring; Clear terminal identification (distinguishing voltage/current/common terminal) for easy signal troubleshooting and maintenance in the later stage; Adopting anti misoperation terminal design to reduce the probability of wiring errors.

-Safety protection and auxiliary power supply: equipped with overcurrent carrying protection capability to avoid terminal damage caused by instantaneous current impact; The shell is made of flame-retardant materials, which comply with industrial safety standards; Equipped with auxiliary power terminals, it can directly provide stable power supply for passive analog sensors, enhancing system integration flexibility.

Working principle

The core of Alstom BCEA1 terminal board is based on the working logic of "centralized conversion of analog signals - standardized adaptation - low distortion safe transmission". As a pure passive signal conversion component, it does not have signal processing function. Its core function is to build a reliable signal transmission link between the on-site analog sensor and the upper controller. By strengthening shielding, channel isolation, and standardizing terminal interface design, it ensures the safe and low distortion transmission of weak analog signals.

The specific workflow is as follows: Firstly, the analog sensors on the industrial site (such as temperature transmitters, pressure sensors, flow sensors, etc.) are connected to the 8-channel independent analog input terminals of the terminal board through shielded cables, and the dedicated common terminals are connected according to the signal type (voltage/current) to form a complete signal input circuit; The terminal board independently transfers each analog signal through internal reinforced insulation isolation lines to avoid crosstalk between signals from different channels. At the same time, the metal shielding shell and shielding cable work together to block electromagnetic interference signals from entering the transmission link on site; Subsequently, the standardized output terminals and shielded connection cables are used to synchronously transmit the standardized 8-channel analog input signals to the analog input interface of the upper controller, completing the signal conversion and transmission; Throughout the entire signal transmission process, the high-level insulation structure, channel isolation design, and low contact impedance terminals of the terminal board continue to function, ensuring that weak analog signals maintain low distortion and stable transmission in harsh industrial environments. At the same time, the standardized terminal layout facilitates signal identification, wiring inspection, and fault diagnosis for operation and maintenance personnel; In addition, the auxiliary power terminals equipped on the terminal board can be connected to a 24VDC power supply according to demand, providing stable power supply for passive analog sensors on site without the need for additional power modules, improving the convenience of system integration.