Main Application Field

1. General-purpose digital interlock output inside QSD servo cabinet paired with 2840A78G01 servo power supply board

2. Driving field intermediate relays, small solenoid valves for boiler/turbine auxiliary control loop

3. Cabinet internal interlock logic & small auxiliary load switching for chemical & papermaking DCS system

2. ELECTRICAL SPECIFICATIONS

2.1 Field Output Ratings

• Operating Load Voltage: 24VDC / Max 60VDC, jumper configurable on PCB (unique G04 dual-voltage design)

• Single Channel Continuous Output Current: 220mA/CH (resistive rated)

• Total Module Maximum Summation Current: ≤3.0A

• Output Type: Isolated open-collector sinking/sourcing dual mode digital output

2.2 Backplane Power Supply

2.3 Isolation & Protection Circuit

• Dielectric Isolation (Channel vs Backplane): ≥1000VAC reinforced insulation

• Per-channel independent overcurrent & short-circuit automatic lock-off protection; built-in TVS+RC composite surge filter for EMI suppression

• Front Panel LED Indication: Power OK steady green; Channel ON steady amber; Overload/Short fault flashing amber per abnormal channel

2.4 Environmental Parameters

• Operating Temperature: 0℃ ~ +60℃ (indoor cabinet installation only)

• Storage Temperature: -40℃ ~ +85℃

• Relative Humidity: 5%~95%RH non-condensing; full three-proof conformal coated PCB against damp & dust

3. MECHANICAL DIMENSION & INSTALLATION

• Overall Size: L133mm × W82mm × H16mm (universal outline same as G01~G03 series)

• Net Weight: Approx.382g

• Mounting: Standard Ovation Q-series rack hot-plug module; optional DIN rail transition base for cabinet retrofit

• Wiring: Side screw terminal block for field cable termination; gold-plated rear edge connector for backplane bus docking

• Casing: Flame retardant black ABS shell with heat dissipation slots, CE industrial certification

4. VERSION DIFFERENCE TABLE (G01/G02/G03/G04 Full Comparison)

5. KEY FEATURES OF 2840A79G04

1. Built-in PCB jumper switch to switch between 24VDC and 60VDC working voltage, one module adapts two mainstream field power specifications

2. Upgraded derated component design to withstand wider on-site power voltage fluctuation range

3. 100% pin compatible with all predecessor G01/G02/G03, plug-and-play replacement without system configuration download

4. Enhanced multi-stage EMI filter circuit to fit complex mixed high/low voltage wiring harsh cabinet environment

6. QUALIFICATION & WARRANTY

• Certification: CE certified, original US-manufactured Emerson Ovation genuine spare part

• Standard Warranty: 12-month factory warranty against manufacturing defect