General Information

• Part Number: 57045 (also referenced as 0-57045)

• Manufacturer: Reliance Electric (Rockwell Automation / Baldor-Reliance)

• Product Series: AutoMax PLC / Distributed Control System (DCS)

• Product Type: Digital I/O / Communication Interface Module

• Application: Industrial automation, drive control systems, connecting field sensors/actuators to control platforms

• Status: Obsolete (discontinued); refurbished & surplus units available

• Mounting: Standard AutoMax rack-mount, plug-in backplane connector

Electrical Specifications

• Backplane Power: +5 VDC, ±12 VDC (from AutoMax rack)

• Field Power: 24 VDC nominal (I/O channel supply)

• I/O Channel Density: Up to 32-point digital input/output

• Communication Interfaces:

  • Backplane: High-speed parallel bus (AutoMax native)

  • Front (typical): RS-232/422/485, Ethernet (EGD), or industrial fieldbus (ProfiBus/DeviceNet)

• Data Rate: Up to 1.75 Mbps (protocol-dependent)

• Isolation: Opto-isolated I/O channels (field vs. logic)

• Protection: Overvoltage, overcurrent, short-circuit protection on field ports

Functional Features

1. I/O Scanning & Control: Manages discrete I/O for local/remote racks

2. Network Communication: DH+, Remote I/O, or fieldbus adapter functionality

3. Hot-Swap Support: Replace module without system shutdown

4. Diagnostics: LED status indicators, fault code reporting

5. Programmability: Configurable via AutoMax programming software

Mechanical Characteristics

• Form Factor: Standard AutoMax plug-in PCB module

• Dimensions (approx): 340 × 220 × 35 mm (13.4 × 8.7 × 1.4 in)

• Weight: ~1.2 kg (2.6 lbs)

• Connection: Rear gold-finger edge connector (backplane); front terminal/DB ports

• Coating: Conformal coated (moisture/dust resistance)

Environmental Ratings

• Operating Temp: 0°C to +60°C

• Storage Temp: -20°C to +70°C

• Humidity: 10%–90% RH, non-condensing

• Altitude: Up to 3,000 m (10,000 ft)

• Certifications: UL, CSA (per original manufacturing standards)

Compatibility

• Rack Compatibility: All AutoMax series racks & backplanes

• Drive Compatibility: FlexPak, CardPak, and PMI series DC/AC drives

• Direct Replacement: Matches original 57045; no wiring/software modifications required