Product DescriptionThe 45C380 (45C-380) is a 16‑bit parallel register input module for Reliance (now ABB) AutoMate / AutoMax PLC systems. It collects 16‑bit binary/BCD data from encoders, thumbwheel switches, and parallel devices. Discontinued; only refurbished, surplus, or NOS units available for legacy system maintenance.

Model Number Interpretation45C: Prefix for Reliance AutoMate 45C‑series control components.380: Designates 16‑bit parallel register input module.45C380 = 45C-380: Hyphen is standard industrial formatting; both are identical.Suffixes (A/B/C/D): Hardware revisions; core functions unchanged.

Technical SpecificationsModule Type: Parallel Register Input ModuleData Width: 16‑bit (parallel binary/BCD)Input Mode: 1‑channel direct or 6‑channel multiplexed (with 6 strobe signals)Logic Levels: TTL to 24 VDC compatibleIsolation: Electrical isolation between field input and PLC logicTerminal Block: 24‑pin removable screw terminalBackplane Power: 5 VDC from rack backplane; onboard input powerSlot Occupation: 1 standard 45C‑series slotWeight: ~0.91 kgOperating Temperature: 0°C to +55°CCompatibility: AutoMate 20/20E, AutoMax PLC, 45C‑series I/O racks

Interface & ConfigurationInstallation: Power off system, insert into 45C rack, secure with screws.Mode Selection: Direct (1×16‑bit) or multiplexed (6×16‑bit) via DIP switches.Logic Setting: Match TTL or 24 VDC input levels.Status LEDs: Power, Run, Fault indicators on front panel.

Core Functions16‑bit Parallel Input: Captures high‑speed 16‑bit binary/BCD data.Multiplexed Input: Expands capacity via 6‑channel multiplexing + strobes.Electrical Isolation: Protects PLC from noise, surges, and ground loops.Onboard Input Power: No external supply needed for field devices.

Application ScenariosEncoder Data: Position/speed input from rotary encoders.Operator Panels: BCD setpoints from thumbwheel switches.High‑Speed Digital I/O: Parallel binary sensors, counters, legacy devices.Legacy System Maintenance: Replacement for existing AutoMate/AutoMax installations.

Usage & Maintenance InstructionsInstallation: Hot‑swap prohibited; ensure backplane contact is secure.Wiring: Shielded twisted pair for data lines; shield grounded at one end.Configuration: Set DIP switches before powering on.Routine Check: Inspect LEDs and terminal tightness; keep clean.Safety: Disconnect all power before disassembly/maintenance.