Product Description

Model Number Interpretation

• 45C: Prefix for Reliance AutoMate 45C‑series control components.

• 381: Designates 16‑bit parallel register output module.

• 45C381A = 45C-381A: Hyphen is standard industrial formatting; both are identical.

• A: Hardware revision (A‑version); core functions unchanged.

Technical Specifications

• Module Type: Parallel Register Output Module

• Data Width: 16‑bit (parallel binary/BCD)

• Output Mode: 1‑channel direct or 6‑channel multiplexed (with 6 strobe signals)

• Logic Levels: TTL to 24 VDC compatible (sinking/sourcing)

• Isolation: Electrical isolation between PLC logic and field output

• Terminal Block: 24‑pin removable screw terminal

• Backplane Power: 5 VDC from rack backplane; onboard output power

• Slot Occupation: 1 standard 45C‑series slot

• Weight: ~0.91 kg

• Operating Temperature: 0°C to +55°C

• Compatibility: AutoMate 20/20E, AutoMax PLC, 45C‑series I/O racks

Interface & Configuration

• Installation: 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 output levels.

• Status LEDs: Power, Run, Fault indicators on front panel.

Core Functions

• 16‑bit Parallel Output: Drives high‑speed 16‑bit binary/BCD data.

• Multiplexed Output: Expands capacity via 6‑channel multiplexing + strobes.

• Electrical Isolation: Protects PLC from load noise, surges, and ground loops.

• Onboard Output Power: Supplies power to field devices (no external supply needed).

Application Scenarios

• Display Drivers: BCD output to 7‑segment displays, LED panels.

• Actuator Control: 16‑bit commands to motion devices, valve controllers.

• Parallel Device Control: Binary data to printers, counters, legacy peripherals.

• Legacy System Maintenance: Replacement for existing AutoMate/AutoMax installations.

Usage & Maintenance Instructions

• Installation: 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.