The 45C307A is a high-performance enhanced processor module for the Reliance AutoMate 30 series PLC. Developed by Reliance Electric, it serves as the core control unit to run user programs, process I/O data and handle network communication. It is fully compatible with AutoMate 30-series backplanes and ideal for complex industrial automation applications. This product has been discontinued, and only refurbished, surplus or NOS units are available for maintenance and replacement of legacy systems.

45C: Unified prefix for Reliance AutoMate 45C-series control components.307: Designates the high-end enhanced processor module for AutoMate 30 systems, delivering better performance than 45C301 and 45C305.A: Represents the revised hardware version with optimized internal circuits.

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

Backplane Interface: Proprietary edge connector for power supply and data exchange with AutoMate 30-series backplanes.Communication Ports: Front-mounted RS-232C port for program configuration, online monitoring and data transmission.Supported Protocols: R-NET, Modbus RTU and ASCII. It can communicate directly 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 field commissioning and troubleshooting.

It executes ladder logic and function block programs to implement complex logic control, motion control and process regulation.It manages multiple local I/O units to complete high-density signal collection and control output.It supports R-NET network to realize data sharing and interaction among PLCs, HMIs and host computers.It integrates self-diagnosis functions, and the LED indicators help staff quickly locate faults related to communication, power supply and I/O modules.It provides rich 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 safeguard important operational data during power failure.

It is used for replacement and maintenance of high-performance CPU modules in legacy AutoMate 30 series PLC systems.It is widely applied in complex industrial fields such as manufacturing production lines, process control, water treatment, power, metallurgy and petrochemical industry.It fits automation systems that require large I/O capacity, multi-device networking and advanced control functions.It is applicable to old equipment renovation projects, keeping compatible with the original system structure and lowering renovation costs.

Installation: Cut off the system power before inserting the module into the corresponding backplane slot and fix it tightly.Power-On Check: Inspect wiring and confirm the fuse is 3AG 3A before powering on to avoid short circuit and overload.Operation Monitoring: Check working status via LED indicators. Steady READY light means normal power supply, flashing RUN light indicates program running, steady RAIL FAULT light stands for system fault, flashing COMM DATA light shows normal data transmission, and lit FORCING light means I/O forcing function is activated.Routine Maintenance: Clean dust on the module every quarter, tighten wiring terminals and regularly check the fuse condition. Keep the module away from moisture and pollutants.Safety: Disconnect all power and wait for complete discharge before disassembly or maintenance work to prevent electric shock. Use only compatible accessories of AutoMate 30 series.