The 45C-307A is a high-performance enhanced processor module for the Reliance AutoMate 30 series PLC. As the core control unit, it executes user programs, processes I/O data and manages network communication. It is fully compatible with AutoMate 30-series backplanes and suitable for complex industrial automation tasks. This model is discontinued, and only refurbished, surplus or NOS units are available for legacy system maintenance and replacement.

45C: Unified prefix for Reliance AutoMate 45C-series control components.307: Designates the high-end enhanced processor module for AutoMate 30 systems with superior performance compared to 45C301 and 45C305.A: Indicates the revised hardware version with optimized internal circuits.The hyphen is a standard writing format for industrial part numbers without changing product performance and functions.

Processor: Enhanced 16-bit processor with advanced instruction set.Memory: 8K × 16-bit application memory, with a total capacity of 16KB.Max I/O Capacity: Supports up to 4 local I/O heads or 4 I/O ports, and mixed configuration is allowed. Each local I/O head supports 256 digital I/O points and 64 analog I/O points, while each I/O port supports 64 digital I/O points and 16 analog I/O points.Communication Baud Rate: 250k baud with parity check to guarantee data integrity.Status Indicators: Five front-panel LED indicators, including COMM DATA, RAIL FAULT, READY, FORCING and RUN.Power Supply: 24 VDC supplied from the backplane, 3A maximum load current, 50W power dissipation, and equipped with a 3AG 3A replaceable fuse for protection.Operating Environment: Operating temperature ranges from -10°C to +50°C, relative humidity 5% to 95% non-condensing.Enclosure: Rugged metal housing for industrial use.Weight: Approximately 1.07 kg.

Backplane Interface: Proprietary edge connector for power supply and data exchange with AutoMate 30-series backplanes.Communication Ports: Front-panel RS-232C port for programming, online monitoring and data transmission.Supported Protocols: R-NET, Modbus RTU and ASCII. It supports direct communication with local I/O units and remote field devices.Programming Interface: Dedicated front port for program upload, download, online editing and system diagnostics. All interfaces are clearly marked for convenient on-site commissioning and troubleshooting.

It runs ladder logic and function block programs to realize complex logic control, motion control and process regulation.It manages multiple local I/O units to complete high-density data collection and output control.It supports R-NET networking to achieve data sharing and interaction between PLCs, HMIs and host computers.It has built-in self-diagnosis capability, and LED indicators help quickly locate faults of communication, power supply and I/O modules.It provides extended instructions for data processing, inter-device communication, remote I/O access and PID control.It adopts data cache and power-off protection design to protect critical operational data during power outages.

It is used to replace and maintain high-performance CPU modules in legacy AutoMate 30-series PLC systems.It is widely applied in complex industrial areas such as manufacturing lines, process control, water treatment, power, metallurgy and petrochemical industry.It is ideal for automation systems requiring large I/O capacity, multi-device networking and advanced control functions.It is also applicable to old equipment renovation projects, which maintains compatibility with the original system architecture and reduces upgrade costs.

Installation: Cut off system power before inserting the module into the designated backplane slot and fix it firmly.Power-On Check: Verify wiring connection and confirm the fuse specification is 3AG 3A before powering on to prevent short circuits and overloads.Operation Monitoring: Judge the operating status via LED indicators. Steady READY light means normal power supply, flashing RUN light represents program running, steady RAIL FAULT light indicates system error, flashing COMM DATA light shows normal data transmission, and lit FORCING light means the I/O forcing function is enabled.Routine Maintenance: Clean dust on the module and connectors every quarter, tighten wiring terminals and inspect the fuse regularly. Keep the module away from moisture and contaminants.Safety: Disconnect all power and wait for complete discharge before disassembly or maintenance to avoid electric shock. Use this module only with compatible accessories of AutoMate 30 series.