Product Description

Model Number Interpretation

• 45C: Unified prefix for all modules in the Reliance AutoMate PLC series.

• 17: Designates an AutoMate 15 CPU with R‑net communication capability (distinct from non‑networked 45C15 CPUs).

• Revision suffixes (e.g., 45C17B, 45C17D) indicate hardware updates for improved stability and compatibility.

Technical Specifications

• Power Supply: 115/230 VAC switchable, 50/60 Hz; rated current 0.5 A (115 VAC) / 0.25 A (230 VAC); internal 1 A fuse.

• Memory: 1K × 16‑bit non‑volatile memory, retains programs/data without battery backup.

• Execution Speed: 4 ms per ladder logic instruction.

• I/O Capacity: Maximum 64 digital I/O points via expansion modules.

• Internal Resources: 56 data registers, 64 internal control coils.

• Front Panel LEDs: POWER, RUN, CPU READY, COM DATA, FORCING, RAIL FAULT for status monitoring.

• Operating Temperature: 0°C to +55°C.

• Certification: FCC Class A (industrial use).

• Mounting: DIN rail or panel mount; weight approx. 1.2 kg.

Interface and Communication Configuration

• Backplane Interface: Dedicated connector for AutoMate 15 I/O rails (e.g., 45C1/45C1A) via proprietary bus.

• R‑net Port: BNC connector for peer‑to‑peer network; supports up to 32 nodes on one coaxial cable.

• Programming Port: Female port for handheld programmer or 45C115 CRT terminal (upload/download/edit programs).

• Expansion Ports: Four male ports for digital I/O module expansion.

• Programming Language: Ladder Diagram (LD) only.

• Protocols: Proprietary R‑net (network) and backplane bus; no native Ethernet/Modbus.

Core Functions

• Executes ladder logic programs for discrete automation control.

• Real‑time scanning and control of 64 digital I/O points (sensors, relays, actuators).

• R‑net Networking: Peer‑to‑peer communication between 32 nodes; enables data sharing and coordinated control across production lines.

• Built‑in diagnostics via front‑panel LEDs for quick fault identification (power, CPU, communication, rail issues).

• Non‑volatile memory preserves programs/data during power outages.

• Online program monitoring, I/O forcing, and upload/download for maintenance.

• Enhanced EMI/RFI shielding for stable operation in high‑interference environments.

Application Scenarios

• Legacy AutoMate 15 PLC systems requiring networked control (e.g., interconnected production lines).

• Small‑to‑medium discrete manufacturing: conveyors, pumps, valves, and assembly lines with distributed I/O.

• Harsh industrial environments: paper mills, textile plants, and metalworking factories (high temperature, electrical noise).

• Retrofit projects replacing failed 45C17/45C17B/45C17D CPUs in aging facilities.

• Systems needing peer‑to‑peer communication between multiple PLCs without Ethernet infrastructure.

Usage and Maintenance Instructions

• Installation: Secure to DIN rail/panel; ensure backplane connector is fully locked to avoid loose connections.

• Pre‑Power Check: Verify 115/230 VAC setting, tighten wiring terminals, and confirm no short circuits before powering on.

• Routine Maintenance: Quarterly inspections of LED status, cable tightness, and module cleanliness; remove dust regularly to prevent overheating.

• Power Safety: Disconnect main power and allow discharge before servicing to avoid electric shock.

• Replacement: 45C17 is backward compatible with 45C17B/45C17D; direct swap without reprogramming.

• Compatibility: Use only original AutoMate 15 I/O modules, programming devices, and coaxial cables for R‑net to ensure reliability。