Technical Specifications

• Part Number: 51304421-100 (51304421100)

• Panel Type: PLCG (Programmable Logic Control Group) Relay Panel

• Relay Configuration: Multiple DPDT/SPDT relays (factory‑configured)

• Contact Rating: 120/240 VAC, 10 A resistive; 24 VDC, 5 A

• Input Signal: 24 VDC logic signals from DCS IOP modules

• Isolation: Optical isolation between DCS side and relay contacts

• Power Supply: 24 VDC ±10% (external or backplane‑powered)

• Operating Temperature: -20°C to +60°C

• Storage Temperature: -40°C to +85°C

• Humidity: 5%–95% RH, non‑condensing

• Dimensions (H×W×D): 483 × 177 × 55 mm (19” rack‑mountable)

• Weight: ~2.3 kg

• Certifications: CE, UL, RoHS

Interface & Communication Configuration

• DCS Interface: Connects to TDC3000/TPS IOPs (e.g., 51304386 series) via ribbon cable

• Field Interface: Screw terminals for field wiring (valves, motors, alarms)

• Diagnostics: LED indicators for power, relay status, and fault detection

• Redundancy: Supports redundant DCS controller inputs for critical applications

Core Functions

1. Signal Conversion: Converts 24 VDC DCS logic signals to high‑power relay contacts.

2. Load Driving: Controls AC/DC loads (valves, motors, solenoids, alarms) up to 10 A.

3. Electrical Isolation: Protects DCS from high‑voltage/current transients in field circuits.

4. Rack Mount Integration: Standard 19” rack design for easy installation in control panels.

5. Fault Indication: On‑board LEDs simplify troubleshooting of relay and wiring issues.

Application Scenarios

• Process Industries: Chemical, petrochemical, oil & gas, power generation, pulp & paper.

• Field Device Control: On/off control of valves, pumps, fans, and motors.

• Alarm Systems: Driving audible/visual alarms for process events.

• Interlock Circuits: Safety interlocks and emergency shutdown (ESD) systems.