ALSTOM C264LB1I691000 CPU Module

General Description

The C264LB1I691000 belongs to the C264 series of automation controllers, which are widely deployed in power generation, substation automation, and industrial process control. This CPU module serves as the main processing unit, executing user programs, managing I/O communication, and coordinating with other devices on the network. It is designed for high reliability in harsh environments.

Key Features

• Processor: 32-bit RISC, 600 MHz, with floating-point unit.

• Memory: 256 MB RAM, 128 MB flash for application storage, expandable via SD card.

• Communication Ports: 2x Ethernet (10/100 Mbit, switchable), 2x RS232, 1x RS485, 1x USB host, 1x USB device.

• Real-Time Clock: Battery-backed, with time synchronization support (SNTP, IRIG-B).

• I/O Capacity: Supports up to 64 local I/O modules and thousands of remote I/O points via fieldbus.

• Fieldbus Support: Integrated Modbus TCP/RTU master/slave; optional Profibus, IEC 61850, DNP3.

• Programming Languages: IEC 61131-3 (LD, FBD, ST, IL, SFC) and C++ for advanced functions.

• Redundancy: Can be configured in hot-standby pairs for high availability.

Technical Specifications

• Power Supply: 24 V DC ±20%, typical consumption 12 W.

• Program Scan Time: < 0.1 ms for 1000 instructions.

• Operating Temperature: -25°C to +70°C.

• Humidity: 5% to 95% non-condensing.

• Dimensions: 140 x 120 x 85 mm (H x W x D).

• Mounting: DIN rail or panel mounting.

Functional Description

The CPU module runs a real-time operating system (RTOS) that ensures deterministic execution of control tasks. It manages cyclic and event-driven programs, handles communication protocols, and provides diagnostic information. The built-in web server allows remote monitoring via standard browsers. The module also supports data logging, recipe management, and alarm handling. Its large memory allows for complex applications and historical data storage.

Applications

• Substation automation and control (bay controllers).

• Power plant balance-of-plant control.

• Water and wastewater treatment plants.

• Oil and gas pipeline monitoring and control.

• Factory automation and machine control.

Configuration and Software

Engineering is performed using ALSTOM’s Control Suite software, which provides project management, code development, and simulation. The software supports version control and can download/upload projects over Ethernet. The CPU can be accessed remotely for diagnostics and maintenance.

Certifications

• CE, UL, and CSA.

• Designed to IEC 61000-6-2 (industrial immunity) and IEC 61000-6-4 (emission).

• Suitable for SIL2 applications when used with certified libraries.

Note: This document provides technical insight; refer to the C264LB1I691000 product manual for detailed specifications and installation.