Reliance 45C-364(45C364)
May 28, 2026

Reliance 45C-364(45C364)

The 45C-364(45C364) is an 8-channel ±10VDC analog output module for Reliance Electric (now ABB) AutoMate/AutoMax PLC systems. It converts digital control signals to bipolar analog signals (±10VDC) for driving valves, actuators, and process instruments. Discontinued; only refurbished, surplus, or NOS (new old stock) units available.

Description

Product Description

The 45C-364(45C364) is an 8-channel ±10VDC analog output module for Reliance Electric (now ABB) AutoMate/AutoMax PLC systems. It converts digital control signals to bipolar analog signals (±10VDC) for driving valves, actuators, and process instruments. Discontinued; only refurbished, surplus, or NOS (new old stock) units available.

Model Number Interpretation

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

  • 364: Designates 8-channel ±10VDC analog output module.

  • 45C-364 = 45C364: Hyphen is standard industrial part number formatting; both are identical.

  • No standard lettered suffix; revisions tracked via serial numbers.

Technical Specifications

  • Type: Analog Output Module (Bipolar Voltage)

  • Channels: 8 independent, isolated outputs

  • Output Signal: ±10VDC (bipolar)

  • Resolution: 12-bit

  • Isolation: Electrical isolation between analog field side and PLC logic side

  • Terminals: 20-pin removable screw terminal block

  • Backplane Power: 5VDC from rack backplane

  • Analog Power: Internal or external selectable

  • Slot Occupation: 1 standard 45C-series slot

  • Weight: ~0.95 kg (2.10 lbs)

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

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

Interface & Configuration

  • Installation: Single-slot mounting in 45C rack; power off before insertion/removal.

  • Output Configuration: Fixed ±10VDC (no current option); DIP switches for address/channel enable.

  • Calibration: Zero and span potentiometers per channel for on-site trimming.

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

Core Functions

  • D/A Conversion: Converts PLC digital values to ±10VDC bipolar analog signals for precise control.

  • 8-Channel Independent Control: Simultaneously drives 8 bipolar devices without crosstalk.

  • Noise Isolation: Protects PLC from field-side electrical noise and surges.

  • High Precision: 12-bit resolution with trim pots for accuracy optimization.

Application Scenarios

  • Process Control: Bipolar valve positioning, actuator control, and servo drive interfaces.

  • Test & Measurement: Precision analog output for calibration and signal simulation.

  • Legacy System Maintenance: Direct replacement for 45C-364 in existing AutoMate/AutoMax installations.

Usage & Maintenance

  • Installation: Power off rack before inserting module; secure screws for good backplane contact.

  • Wiring: Use shielded twisted-pair cables for analog signals; single-end ground shield to reduce noise.

  • Configuration: Set DIP switches and calibrate zero/span before powering on.

  • Maintenance: Inspect LEDs and terminal tightness periodically; keep module clean.


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