Product Description

Model Number Interpretation

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

• 17: Denotes an AutoMate 15 CPU with R‑net communication (networked counterpart to non‑networked 45C15).

• D: Indicates the fourth and final hardware revision, featuring upgraded circuitry, enhanced noise immunity, and firmware tweaks for maximum reliability in legacy installations.

• The hyphen (45C‑17D) is a common formatting variant; the official part number is 45C17D.

Technical Specifications

• Power Supply: 115/230 VAC switchable, 50/60 Hz; 0.5 A @ 115 VAC, 0.25 A @ 230 VAC; internal 3AG 1 A fuse.

• Memory: 1K × 16‑bit non‑volatile memory (no battery backup required).

• Execution Speed: 4 ms per ladder logic instruction.

• I/O Capacity: Max 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 real‑time diagnostics.

• Operating Temperature: 0°C to +55°C; improved thermal stability over C revision.

• Environmental: Enhanced EMI/RFI shielding for high‑noise industrial areas.

• 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; up to 32 nodes on one coaxial cable (Belden 9259 or equivalent).

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

• Expansion Ports: Four male ports for digital I/O expansion (full 64‑point support).

• Programming Language: Ladder Diagram (LD) only.

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

Core Functions

• Executes user ladder logic for discrete automation control.

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

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

• LED diagnostics for rapid fault isolation (power, CPU, comms, rail, forced I/O).

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

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

• D‑revision enhancements: better tolerance to voltage fluctuations, improved vibration resistance, and longer service life in legacy systems.

• Plug‑and‑play replacement for 45C17/45C17B/45C17C; no program changes needed.

Application Scenarios

• Legacy AutoMate 15 systems requiring R‑net networked multi‑PLC control.

• Small‑to‑medium discrete manufacturing: conveyors, assembly lines, packaging, pump/valve control.

• Harsh environments: paper mills, textile plants, metalworking (high temp, noise, vibration).

• Retrofit/replacement projects for aging 45C17 series CPUs.

• Plants without Ethernet infrastructure needing reliable coaxial‑based peer‑to‑peer communication.

Usage and Maintenance Instructions

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

• Pre‑Power Check: Confirm 115/230 VAC setting, tighten terminals, and verify no short circuits.

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

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

• Replacement: Direct swap with 45C17/45C17B/45C17C; backward compatible, no reprogramming required.

• Accessory Compatibility: Use only original AutoMate 15 I/O modules, programming devices, and R‑net coaxial cables.