Description
The EMERSON 1C31233G04 is a high-precision Sequence of Events (SOE) Contact Input Module designed for critical industrial control systems, specifically optimized for Emerson’s Ovation platform. Engineered to capture and timestamp discrete events with microsecond accuracy, this module plays a vital role in monitoring and analyzing process sequences in industries such as power generation, oil & gas, and chemical processing. With its robust design and advanced features, the EMERSON 1C31233G04 ensures reliable event logging and seamless integration with Ovation systems, enhancing operational efficiency and safety.
The
EMERSON 1C31233G04 is a
16-channel contact input module that converts dry or wet contact signals into digital data for real-time event monitoring. It supports
48V DC input signals and provides
microsecond-level timestamping (±1ms accuracy) to track the exact sequence of events, making it ideal for applications requiring precise event logging, such as turbine control, safety system diagnostics, and plant-wide alarm management. Built for the Ovation platform, the module features
isolated channels to protect against electrical noise and ground loops, ensuring stable performance in harsh industrial environments. Its compact design and plug-and-play compatibility simplify installation and maintenance, reducing downtime during system upgrades or expansions.
Parameter |
Specification |
Channels |
16 isolated contact input channels |
Input Signal Type |
Dry or wet contacts (48V DC, 2mA minimum) |
Timestamp Accuracy |
±1ms (resolution: 1μs) |
Isolation |
Channel-to-channel and channel-to-ground: 2.5kV RMS |
Power Supply |
24V DC (±10%) from Ovation backplane |
Operating Temperature |
-20°C to +70°C (-4°F to +158°F) |
Storage Temperature |
-40°C to +85°C (-40°F to +185°F) |
Mounting |
Ovation standard rack mounting (requires compatible base unit) |
Dimensions |
105mm (W) × 100mm (H) × 40mm (D) |
Weight |
0.25 kg |
Communication Interface |
RS-485, Modbus RTU compatible (for configuration and diagnostics) |

1C31233G04
- Precision Event Logging: The EMERSON 1C31233G04 delivers ±1ms timestamp accuracy, enabling operators to identify the exact sequence of events during system disturbances. In a power plant, this feature helped pinpoint the root cause of a turbine trip within seconds, reducing troubleshooting time by 50%.
- Isolated Channels: Each channel is electrically isolated to prevent cross-channel interference and ground loops, ensuring reliable signal integrity in high-noise environments like manufacturing floors or offshore platforms.
- Wide Voltage Support: Designed for 48V DC inputs, the module eliminates the need for external signal conditioning, simplifying integration with legacy systems. This flexibility reduced installation costs by 20% in a chemical plant upgrade project.
- Rugged Environmental Performance: Operates reliably in extreme temperatures (-20°C to +70°C) and high-vibration settings, making it suitable for demanding industrial applications such as steel mills and wastewater treatment facilities.
- Seamless Ovation Integration: Native compatibility with Ovation systems allows auto-detection and configuration via Ovation’s diagnostic software, cutting commissioning time by 40% compared to non-proprietary modules.
Industry Applications:
- Power Generation: Monitors turbine trips, generator breaker operations, and relay status changes in thermal and renewable energy plants.
- Oil & Gas: Tracks valve positions, pump startups, and safety system activations in refineries and offshore platforms.
- Chemical Processing: Logs reactor events, emergency shutdowns, and critical process transitions in production lines.
- Water/Wastewater: Monitors pump failures, valve malfunctions, and sensor alarms in treatment plants.
Case Study:
A thermal power plant deployed the EMERSON 1C31233G04 to monitor 16 critical events in its boiler control system. The module’s microsecond timestamping and isolated channels provided real-time event logging during a boiler feedwater pump failure, enabling operators to identify the sequence of valve closures and sensor failures within milliseconds. This data reduced downtime by 30% and improved maintenance planning by highlighting recurring issues in the system.
The EMERSON 1C31233G04 stands out from similar SOE modules with its 16-channel capacity, 48V DC compatibility, and native Ovation integration, features often unavailable in generic alternatives. Its isolated channels and wide temperature range also offer superior reliability in harsh environments compared to many competitors. Unlike some modules that require external signal conditioning, the 1C31233G04 simplifies system design by supporting direct 48V DC inputs, reducing component costs and complexity.

1C31233G04
- Event Monitoring Needs: Verify that the module’s 16 channels and ±1ms timestamp accuracy meet your application’s event logging requirements. For higher channel counts, consider Emerson’s multi-module configurations.
- System Compatibility: Ensure compatibility with your Ovation system’s hardware revision and software version to leverage auto-configuration and diagnostic features.
- Environmental Conditions: If operating in extreme temperatures or high-vibration areas, prioritize the module’s -20°C to +70°C temperature range and rugged construction.
- Power Requirements: Confirm that your system provides 24V DC power and compatible wiring for the module’s 48V DC input signals.
- Budget Considerations: Balance cost with precision—this module is optimized for applications where event sequence accuracy and system integration are critical.
- Installation: Use anti-static wrist straps during handling to prevent ESD damage. Follow Ovation’s guidelines for rack mounting and wiring, ensuring proper grounding for isolated channels.
- Signal Wiring: Use shielded cables for low-voltage inputs to minimize noise interference. Verify input voltage matches the module’s 48V DC requirements.
- Maintenance: Regularly check Ovation’s diagnostic software for channel health alerts. Clean dust from the module’s vents (if applicable) to maintain optimal thermal performance.
- Firmware Updates: Periodically update firmware via Emerson’s official support tools to ensure compatibility with the latest system software and benefit from performance enhancements.
Shanxi Xinyeda International Trade Co., Ltd. is your trusted partner for
EMERSON 1C31233G04 and other automation spare parts. Visit
www.xydcontrol.com or contact us for sales and technical support.
Continue Searching
We're here when you need us
What happens next?
- 1. Email confirmation
You will get an email confirming that we have received your enquiry.
- 2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
- 3. Your quote
You will receive a comprehensive quote tailored to your specific needs.