Model Explanation

51402625-125

5140: Honeywell DCS Core Hardware Series

26: UCN I/O Sub-Series

25: Digital Input (DI) Module

125: With SOE function, 32 channels, standard temperature version

Model Alias: MC-PDIS12, DI SOE-125 Technical Specifications

Function positioning: 32-channel digital input + SOE event sequence recording

Channel count: 32 DI channels, grouped isolation

Input type: Dry contact / Wet contact (24VDC/125VDC selectable)

SOE accuracy: 1ms timestamp, event cache of 1000 entries

Input voltage: 24VDC (default), 125VDC selectable

Input current: Approximately 10mA per channel

Isolation voltage: 1500VAC (channel - backplane)

Processor: Local 32-bit MCU, HDW Rev D/F, FW Rev G

Network protocol: UCN, 5 Mbps, redundant communication

Power supply: 5VDC backplane power supply, ≤ 6W

Size (mm): 220 × 120 × 30 (standard card)

Weight: Approximately 0.62 kg

Operating temperature: 0°C ~ +50°C (standard type)

Adapter rack: UCN I/O chassis (51402455-100 DNCF)

Compatible systems: TDC3000 R500~R610, TPS R100~R120, Experion PKS C300

Interface and configuration

Field interface: 32-channel DI terminal block (grouped isolation)

Backplane interface: UCN chassis-specific slot, supports hot swapping

Panel indicators: PWR, RUN, COM, FAULT, 32-channel status LED

Configuration method: TPS/Experion software configuration, can set input type, decoupling time, SOE trigger conditions

Core functions

32-channel high-speed DI acquisition: Relay, limit switch, button, sensor, etc. for switch quantity input

SOE event sequence recording: Millisecond-level timestamp, accurately records the sequence of event occurrence, used for fault analysis

Signal decoupling and filtering: Software / hardware decoupling, suppresses on-site interference

Redundant communication: UCN dual-network redundancy, reliable data transmission

Self-diagnosis and alarm: Channel failure, short circuit, open circuit, communication abnormality real-time alarm

Application scenarios

Compatible systems: Honeywell TDC3000, TPS, Experion PKS (UCN architecture)

Typical configuration: UCN chassis + 51402625-125 + HPM controller + operation station

Industry: Petrochemicals, thermal power, metallurgy, power, water treatment, etc. process industries requiring accident recall

Function: Key equipment status monitoring, interlock action sequence analysis, safety system event recording