Product Introduction

45C-400A (45C400A) is a logic processor module of the Reliance (now ABB) AutoMate 40/40E/40X series PLC system. As the core control unit of the system, it is responsible for executing ladder logic, processing I/O data and communication tasks. It is no longer in production and is only used for refurbishment, surplus or NOS new products for the maintenance of old systems.

Model Interpretation

45C: Prefix of the Reliance AutoMate 45C series control component.

400: Represents the logic processor module.

A: Hardware version (A version), the core functions remain unchanged.

45C-400A = 45C400A: The hyphen is the industrial standard notation, and the two are exactly the same.

Technical Parameters

Module Type: Logic Processor (CPU) Module.

Adapter Controller: AutoMate 40/40E/40X dual processor architecture.

Communication Rate: 250Kbaud.

I/O Ports: 4 (local I/O and communication interfaces).

Maximum Digital I/O: 256 points.

Maximum Analog I/O: 64 points.

Backplane Power Supply: 5VDC taken from the backplane of the 45C rack.

Weight: Approximately 0.88kg.

Operating Temperature: 0°C to +55°C.

Installation Slots: Occupies 1 standard slot of the 45C series.

Interface and Communication Configuration

Installation Method: Insert into the 45C rack after power off, fixed with screws, and do not allow hot swapping.

Communication Interfaces: 4 ports, support local I/O bus and upper/lower remote communication.

Status Indicators: The panel contains power, operation, and fault LED indicators, which display the working status in real time.

Configuration Method: Download the ladder diagram program through the programming software, without hardware DIP switches.

Bus Protocol: Special backplane bus, high-speed data interaction with I/O modules. Core function

Logical operations: Execute ladder diagram programs to achieve sequential control, logical interlock, and arithmetic processing.

I/O control: Manage up to 256 digital and 64 analog I/O points, with real-time collection and output.

Data communication: 250Kbaud high-speed communication, connecting to upper computers, HMIs, or remote I/O modules.

Dual processor collaboration: Cooperate with the other processor of the system, handling complex control tasks redundantly or separately.

Fault diagnosis: Built-in self-check function, indicating lights alarm and recording error codes when faults occur. Applicable scenarios

Replacement of the core of the old system: Direct replacement of the aging or damaged CPU in the AutoMate 40/40E/40X system.

Production line control: Logical control and interlock protection for old production lines in industries such as automobiles, metallurgy, and papermaking.

Equipment renovation and upgrade: Retain the original I/O and wiring, only replace the processor module to reduce the renovation cost.

Redundant control system: As the logical main controller in a dual-processor architecture, ensuring high system reliability.

User and maintenance instructions

Before installation, all power supplies of the system must be cut off. Confirm that the backplane slots are clean and free of foreign objects, insert and then tighten the fixing screws.

Program download: Connect the module to the programming software before powering on, download the compatible ladder diagram program and verify it.

Daily inspection: Regularly check the status of the running and fault indicator lights, keep the module surface clean and free of dust accumulation.

Heat dissipation maintenance: Ensure good ventilation of the frame, avoid blocking the module's heat dissipation holes, and prevent overheating and system crash.

Fault handling: When the indicator light is abnormal, first check the backplane power supply and connections; if there is a program error, re-download or troubleshoot the logic; if the hardware is damaged, replace the module.

Safety regulations: Before disassembling, maintaining, or replacing, completely cut off the power supply. Do not operate with power on to avoid the risks of electric shock and module burnout.