Westinghouse (Emerson) 1C31238H01 32-Ch 48VDC Digital Input DI Module For Ovation DCS
- Product Code: 1C31238H01
- Availability: In Stock
Westinghouse (Emerson) 1C31238H01 32-Ch 48VDC Digital Input DI Module For Ovation DCS
Manufacturer: Westinghouse / Emerson Automation (Ovation DCS Series)
Part Number: 1C31238H01 (P-Mod Digital Input Card, 48VDC field contact type)
Product Type: Rack plug-in P-Mod digital input I/O module, Ovation standard single-slot DCS card
Matching Platform: Emerson Ovation distributed control system, compatible with Ovation standard I/O rack, redundant controller backplane, matched terminal base for field wiring termination
Core Function: 32 isolated digital input channels for 48VDC field dry/wet contact signals; collect breaker status, valve feedback, limit switch, relay auxiliary contact signals; support SOE sequence of event high-precision time stamping; built-in channel open-circuit fault diagnosis; hardware input filter anti-contact bounce; dual rack bus communication; front panel per-channel LED status indication; hot-swap replaceable design; 1000VAC channel-to-logic isolation
1. Product Overview
1C31238H01 is a core digital input (DI) P-Mod card for Westinghouse/Emerson Ovation DCS, widely deployed in power plant, chemical and oil & gas process control systems.
It provides 32 independent 48VDC digital input channels, designed to acquire discrete field signals including circuit breaker position, valve open/close feedback, equipment running/fault status, proximity switches and interlock contacts. The module adopts high-speed signal sampling circuit to support SOE event sequence recording with microsecond-level time stamp, critical for power plant turbine, boiler and generator fault analysis.
Each channel is galvanically isolated (1000VAC isolation between field circuit and internal logic circuit) to eliminate ground loop interference and protect the main controller from field surge damage. Built-in adjustable hardware filter suppresses contact bounce and industrial electromagnetic noise to avoid false signal triggering.
All channel states and fault codes are uploaded to Ovation redundant controllers via dual redundant rack backplane bus. Front panel independent LED lamps display on/off status for each channel for fast on-site inspection. The card supports hot swapping without rack power shutdown, minimizing production downtime during maintenance.
Full conformal coated PCB, industrial wide-temperature design, IP20 housing, stable long-term operation in high-vibration, high-dust control room environments. Cannot operate standalone; must be installed in Ovation I/O rack and matched with dedicated terminal base to complete field signal wiring.
This module is a mainstream spare replacement hardware for legacy Ovation DCS power generation control cabinets, used for unit renovation, discrete signal channel fault replacement and regular system overhaul.
2. Complete Technical Specifications
• Compatible System: Emerson Ovation DCS control rack, P-Mod I/O series
• Channel Count: 32 isolated digital input channels
• Field Signal Level: 48VDC wet/dry contact input
• Isolation Rating: 1000VAC dielectric isolation between field channel and internal logic
• Signal Filter: Hardware anti-bounce filter, configurable filter time
• SOE Function: High-precision time stamping for sequence of event recording
• Communication: Dual redundant Ovation rack backplane bus to main controller
• Diagnostic Functions: Per-channel open wire detection, module hardware self-test, fault register upload
• Front Panel Indicator: Separate LED for each channel ON/OFF status, module RUN/FAULT status LEDs
• Hot Swap Support: Plug-and-play hot replacement without rack power off
• Module Power: 24VDC rack logic power, typical power consumption ~1.2W
• Operating Temperature: 0℃ ~ +60℃ continuous ventilated cabinet operation
• Storage Temperature: -40℃ ~ +85℃; Relative Humidity: 5% ~ 95% RH non-condensing
• Mechanical Dimension: Standard Ovation single-slot card; 228mm(H) × 40mm(W) × 130mm(D), net weight ~0.88kg
• PCB Protection: Full IPC-CC-830 anti-corrosion conformal coating, anti-static industrial circuit board
• Compliance Certifications: CE, UL508, IEC 61000 industrial EMC anti-interference standard
3. Core Hardware Advantages
1. 32-channel high-density 48VDC DI integration, single card collects massive discrete equipment status signals, reduces rack I/O card quantity and wiring cost
2. Built-in SOE high-precision time stamp function, meets power plant protection event sequence recording requirements for fault tracing and post-event analysis
3. 1000VAC full channel electrical isolation, effectively isolates field surge and ground loop interference to improve system anti-interference performance
4. Dual redundant rack bus communication + hot-swap design, single card replacement will not interrupt overall DCS signal acquisition, high system operation reliability
5. Per-channel independent LED status display + full self-diagnosis logic, technicians quickly locate broken field wiring and contact faults without test instruments
4. Typical Application Scenarios
• Thermal power plant Ovation DCS boiler, turbine, generator breaker & valve feedback signal acquisition core DI card
• Petrochemical refinery distributed control cabinet pump, valve, safety interlock discrete signal spare input module
• Oil & gas pipeline station offshore platform process safety equipment status monitoring digital input card
• Water treatment plant large pump, flow switch, gate valve position feedback signal collection I/O module
• Old Ovation DCS control cabinet upgrade overhaul, daily discrete channel wiring fault replacement spare 1C31238H01 card
Emerson Automation © Westinghouse 1C31238H01 32CH 48VDC Digital Input Module For Ovation DCS