Model Explanation

51401191-100: Honeywell part number (written as 51401191100)

51401191 = UCN DO FTA (Digital Output Field Terminal Board) series

100 = Standard version, Rev A hardware, 32 channels, 120VAC relay output

Component Type: FTA (Field Termination Assembly) Field Terminal Board

Compatible Systems: TDC 3000, TPS (UCN Network)

Alternative Model: No direct alternative, UCN-specific 120VAC DO Terminal Board Technical Specifications

Channels: 32 digital outputs (DO), relay isolation

Output signal: 120VAC (±10%), 50/60Hz, maximum 5A/channel

Output type: Switch contacts (NO/NC), relay contact capacity 5A@120VAC

Isolation: Channel - backplane 1500VAC, channel-to-channel 500VAC

Response time: ≤15ms/channel (relay action time)

Backplane interface: UCN dedicated I/O bus, 5Mbps

Power supply: 24VDC (backplane, ±10%), power consumption ≤12W

Operating temperature: 0°C ~ +60°C

Storage temperature: -40°C ~ +85°C

Humidity: 5%~95% RH (no condensation)

Size: Standard 19-inch card (3U), UCN I/O slot

Weight: Approximately 0.6kg

Certifications: CE, UL, CSA, FM

Interface and Configuration

External interface: 32 screw terminals (per channel 3 pins: NO/NC/COM), status LED (CH1~CH32)

Backplane interface: UCN cabinet gold fingers, dedicated high-speed data bus

Configuration method: On-board jumpers (channel enable, output mode, terminal resistor) + system software configuration

Redundancy: Supports 1:1 hot redundancy with UCN DO module, automatic fault switching

Compatibility: Compatible with TDC 3000 UCN full version, compatible with MU-TDOR11 series modules Core function

32-channel 120VAC relay output control: Receives instructions from the DCS controller, the relay contacts close / open, directly driving industrial site 120VAC contactors, solenoid valves, indicator lights and other actuators.

Electrical isolation and load protection: The relay's high-voltage isolation design protects the DCS backplane from strong electrical interference, surge voltages and load short-circuit impacts.

Real-time channel status monitoring: Each channel has an independent LED status indicator, clearly displaying the output on/off / fault status, facilitating on-site inspection and maintenance.

UCN network data interaction: Receives controller output instructions and returns execution status, supporting interlock control, sequential control, and equipment start/stop management.

Fault self-diagnosis: Built-in relay faults, load open/closed diagnosis, real-time reporting of fault information, quickly locating the faulty channel. Applicable scenarios

System: Honeywell TDC 3000, TPS (UCN network)

Equipment: UCN cabinet, UCN DO module, 120VAC contactor / solenoid valve / indicator light

Industry: Petrochemicals, thermal power, metallurgy, water treatment, oil and gas transmission

Application: On-site equipment start/stop control, valve opening interlock, alarm light driving, motor control loop, safety interlock output