Product Description

Model Number Interpretation

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

• 35: Designates the AutoBus interface head module（120/240 VAC）.

• Hyphen: 45C-35 is an alternate writing format; both 45C35 and 45C-35 refer to the same product.

• Common Revisions: 802803-RN / RW / RX（revision suffixes for hardware updates）.

Technical Specifications

• Function: AutoBus network interface head（master/slave configurable）.

• Power Supply: 120/240 VAC, 50/60 Hz.

• Max Wiring Distance: 1000 ft（≈305 m）on AutoBus network.

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

• Backplane: Standard 45C-series edge connector（5 VDC from rack）.

• Indicators: Front-panel LEDs for PWR, ACTIVE, COMM, and FAULT.

• Dimensions: ~228.6 × 177.8 × 152.4 mm（9 × 7 × 6 in）.

• Weight: ~3.18 kg（7 lbs）.

• Operating Temp: 0°C to +55°C.

• Isolation: 500 Vrms between network and backplane.

Interface & Configuration

• Installation: Mounts in a standard 45C-series rack（single slot）, secured by screws.

• Network Port: D-sub or terminal block for AutoBus network wiring（shielded cable required）.

• Configuration: Set network address（drop number）and baud rate via DIP switches on the front panel.

• Front Panel: Status LEDs for power, network activity, communication link, and fault diagnosis.

Core Functions

• Acts as a network gateway between local I/O and the AutoBus industrial network.

• Transmits/receives real-time control data, status signals, and diagnostic information.

• Supports master-slave communication for multi-controller coordination.

• Enables remote monitoring and control of field devices via HMI/SCADA.

• Detects network faults（open/short, communication errors）and reports to the PLC CPU.

Application Scenarios

• Network expansion for AutoMate 20/20E PLC systems.

• Legacy AutoMax DCS maintenance in manufacturing, process control, and power industries.

• Distributed I/O connectivity across multiple production lines via AutoBus.

• Integration of older Reliance systems with modern HMI/SCADA platforms.

Usage & Maintenance

• Installation: Power off the rack before insertion; tighten screws and verify backplane connection.

• Wiring: Use shielded twisted-pair cable for AutoBus; ground shield at one end only.

• Configuration: Set DIP switches for network address and baud rate; verify LED status after power-on.

• Routine Check: Inspect LEDs monthly; clean front panel and connectors quarterly.

• Safety: Disconnect all power before handling to avoid electric shock and ESD damage.