Technical Specifications

• Part Number: 51304451-100 (51304451100)

• Module Type: Digital Output (DO) Standby Manual FTA

• Channel Configuration: 16 × digital output channels (with manual/auto switch)

• Load Voltage Rating: 24 VDC (nominal, 18–30 VDC range)

• Contact Rating: 0.5 A per channel (resistive load)

• Isolation: Channel‑to‑backplane 500 VAC rms basic isolation

• Switchover: Manual/auto toggle per channel (local override capability)

• Power Supply: 24 VDC ±10% (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): 270 × 185 × 95 mm (Size C, 18‑inch form factor)

• Weight: ~2.5 kg

• Certifications: UL‑listed, CE‑compliant

• Terminals: Screw‑type (14–24 AWG)

• Status Indicators: Power LED, channel status LEDs, manual mode indicator

Interface & Communication Configuration

• DCS Interface: UCN backplane edge connector (1 Mbps, TDC3000/TPS compatible)

• Field Interface: Screw terminals (16 channels for 24 VDC loads)

• Switchover Control: Local manual/auto switch per channel

• Diagnostics: On‑board self‑diagnostics with fault reporting via UCN

• Wiring: Accepts 14–24 AWG stranded copper wire

• Connector: UCN 96‑pin edge connector (gold‑plated contacts)

Core Functions

1. 16‑Channel Digital Output Control: Drives 24 VDC field devices (solenoids, relays, indicators) in TDC3000/TPS systems.

2. Manual/Auto Switchover: Each channel has a local toggle switch for manual override (bypass DCS control) or auto mode (DCS‑controlled).

3. Standby Operation: Enables safe maintenance or backup control of critical outputs without DCS intervention.

4. Basic Isolation: 500 VAC channel‑to‑backplane isolation protects DCS from field noise.

5. Status Monitoring: LEDs for power, channel status, and manual mode provide quick visual diagnostics.

Application Scenarios

• Process Industries: Chemical, petrochemical, power generation (critical valve/actuator control).

• Critical Device Control: Solenoid valves, emergency shutdown (ESD) relays, and safety indicators requiring local override.

• Legacy DCS Systems: Replacement/expansion for TDC3000/TPS needing manual standby DO capability.

• Maintenance & Backup: Applications where local manual control is required during DCS downtime or maintenance.

Compatibility Note

• Form‑factor compatible with Size C UCN FTAs (e.g., 51304446 series).

• Functionally compatible with Honeywell TDC3000/TPS and Experion PKS systems.

• Key Difference: Unlike standard DO FTAs (e.g., 51304446 series), this model adds per‑channel manual/auto switchover for standby operation.