Description
The part number 1C31238H01 corresponds to a hardware component used in Westinghouse / Emerson Ovation distributed control systems (DCS).
Component Overview
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Manufacturer: Emerson / Westinghouse (Ovation DCS Platform)
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Product Type: P-Mod Cavity Insert / Base Cover / Personality Module Accessory (commonly associated with compact digital input and contact event input modules)
Key Details & Application
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Function: It fits into the Personality Module (P-Mod) cavity position on the I/O base unit. It acts as a cavity insert/cover that provides wiring schematics, pinout information, or configuration mapping for specific 16-channel digital/contact input modules.
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System Environment: Used extensively in power generation, water treatment, and heavy industrial automation plants utilizing the Ovation control architecture.
1C31238H01
Product Overview
1C31238H01 is a 16-channel Compact Digital Input Module originally manufactured by Westinghouse, now under Emerson Ovation Distributed Control System platform.
This module collects discrete status signals from field switches, relay contacts, limit switches and interlock devices. It performs signal filtering, debounce processing and digital conversion, and transmits field status data to Ovation controllers via the PMOD internal bus.
It supports high-resolution time stamping for SOE (Sequence of Events) recording, widely used for trip signal acquisition, fault sequence analysis in power plant boiler, turbine and BMS systems. It adopts hot-swap design for Ovation PMOD racks.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 1C31238H01 |
| Module Type | Compact Digital Input Module |
| Manufacturer | Emerson / Westinghouse |
| Applicable Platform | Ovation DCS PMOD Rack |
| Channel Count | 16 isolated digital input channels |
| Supported Signal | Dry contact / 24VDC wet contact input |
| Input Rated Voltage | 24 VDC |
| Debounce Time | Software configurable |
| SOE Function | Millisecond time stamp for event logging |
| Internal Bus | Ovation PMOD bus |
| Power Supply | Supplied by rack backplane |
| Hot Swap | Supported within Ovation PMOD rack |
| Mounting Form | Standard plug-in PMOD module |
| Operating Temperature | 0 ℃ ~ +60 ℃ |
| Ambient Humidity | 5%–95% non-condensing, non-condensing |
| Protection Class | IP20 (cabinet installation) |
| Front Panel | Channel status LED indicators |
| Supporting Termination Unit | Matched Ovation terminal base assembly |
| Engineering Software | Ovation Developer Studio |
| Spare Part Status | Original production discontinued; new surplus & refurbished spare modules available |
Key Features
- Compact PMOD form factor, saves rack installation space
- 16-channel group-isolated input, enhances anti-interference capacity under strong electromagnetic field in power plants
- Built-in channel diagnostics to detect open circuit and abnormal input status
- Configurable signal debounce filter to avoid false status jumps caused by contact bounce
- Supports SOE time tagging, critical for analyzing unit trip and protection action sequence
- Hot-swap capability; module can be replaced without shutting down the whole rack
- Standard mechanical dimension compatible with all Ovation PMOD slots
- Strict full part number verification required; different hardware revision suffixes cannot be directly interchanged without configuration verification
- Essential spare hardware for maintenance and retrofit of thermal power plant Ovation DCS control racks
