Model Explanation

51401186-100: Honeywell part number (written as 51401186100)

51401186 = UCN DI FTA (Digital Input Field Terminal Board) series

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

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

Compatible Systems: TDC 3000, TPS (UCN Network)

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

Channel count: 32 digital inputs (DI)

Input signal: 120VAC (±10%), 50/60Hz

Input type: Dry contact / Wet contact compatible

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

Response time: ≤ 10ms / channel

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

Power supply: 24VDC (backplane, ±10%), power consumption ≤ 8W

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 0.5kg

Certifications: CE, UL, CSA, FM

Interface and Configuration

External interface: 32 screw terminals (2 pins per channel), status LED (CH1~CH32)

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

Configuration method: Built-in jumpers (channel enable, input type, termination resistor) + system software configuration

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

Compatibility: Compatible with TDC 3000 UCN full version, compatible with MU-TDIA11 series modules Core function

32-channel 120VAC digital input signal acquisition: Directly connect to industrial site 120VAC switches, relay contacts, limit switches, etc. Signal filtering, anti-jitter, level conversion ensure stable input of switch quantity signals.

Electrical isolation and anti-interference: High-voltage isolation design, suppresses on-site electromagnetic interference, surge voltage, and protects the DCS system backplane and modules from damage.

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

UCN network data interaction: The collected switch quantity signals are transmitted to the controller via the UCN bus, supporting real-time monitoring, alarm triggering, and interlock control.

Fault self-diagnosis: Built-in channel open circuit, short circuit, and overpressure diagnosis, promptly reporting fault information and quickly locating the faulty channel. Applicable scenarios

System: Honeywell TDC 3000, TPS (UCN network)

Equipment: UCN cabinet, UCN DI module, 120VAC on-site switch / relay

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

Application: Monitoring of on-site switch status, interlock for equipment start/stop, safety circuit monitoring, signal acquisition for motor control