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Product Overview
The Ovation 1C31174G33 Loop Interface Module is a critical component of Emerson’s Ovation Distributed Control System (DCS), designed specifically to manage and condition analog signals used in closed-loop process control. This module provides reliable signal interfacing for analog current or voltage loops, ensuring precise data acquisition and accurate process response within industrial automation systems.
Engineered to operate in real-time environments, the 1C31174G33 allows seamless communication between field devices and control processors. Its architecture ensures robust performance under harsh environmental conditions, supporting long-term system integrity in complex industrial operations such as power generation, water treatment, chemical processing, and more.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Type | Loop Interface Module |
| Model Number | 1C31174G33 |
| System | Emerson Ovation DCS |
| Input Signal Types | 4–20 mA, 1–5 VDC (selectable per channel) |
| Number of Channels | 8 Analog Channels |
| Output Type | Isolated signal loop to controller |
| Loop Isolation | Channel-to-channel and channel-to-ground |
| Communication Interface | Ovation I/O bus |
| Input Impedance | > 250 ohms (current), > 10 kΩ (voltage) |
| Resolution | 12-bit to 16-bit (system dependent) |
| Update Rate | 10 ms typical |
| Diagnostics | Built-in self-diagnostics and loop integrity check |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% non-condensing |
| Dimensions (L × W × H) | 41 x 159 x 108 mm |
| Weight | 0.3 kg |
| Mounting | Rack-mounted module (standard Ovation chassis) |
| Compliance | CE, UL, CSA, RoHS |
Applications
The 1C31174G33 Loop Interface Module is designed for precise analog signal interfacing and is deployed in a wide range of industrial and infrastructure control systems. Common use cases include:
-
Power Generation Plants
Ensures accurate measurement and control of turbine, boiler, and auxiliary systems using analog feedback signals. -
Water & Wastewater Treatment
Provides reliable signal conditioning for flow meters, pressure sensors, pH analyzers, and other field devices. -
Chemical and Petrochemical Plants
Maintains control precision by interfacing with process transmitters used in temperature, level, and pressure control. -
Oil & Gas Facilities
Connects instrumentation loops in remote terminal units (RTUs) and distributed control setups for upstream and downstream operations. -
Pharmaceutical Manufacturing
Supports GMP-compliant data acquisition and closed-loop control in cleanroom and process environments. -
Metals & Mining Operations
Handles rugged analog signal inputs from machinery and field sensors in highly variable industrial conditions.
Advantages
-
High Accuracy and Resolution
Offers precise signal processing with 12–16-bit resolution, supporting critical control loops with minimal error margin. -
Channel Isolation
Each analog channel is electrically isolated to prevent ground loops and interference—ideal for noisy environments. -
Compact and Modular Design
Space-efficient form factor that fits standard Ovation chassis, allowing dense I/O installations. -
Real-Time Diagnostics
Onboard diagnostics monitor loop health and report issues like open circuits or signal faults, reducing downtime. -
Wide Signal Compatibility
Accepts both current and voltage inputs on each channel, offering flexibility for a range of instrumentation. -
Reliable in Harsh Conditions
Designed to withstand industrial temperatures, humidity, and vibration—ensuring long-term field reliability. -
Fast Data Update Rate
Supports rapid signal sampling, enabling the control system to react promptly to real-time process variations. -
Easy Integration
Plug-and-play with Ovation DCS platform, requiring no external signal conditioners or converters.
FAQ (Frequently Asked Questions)
1. What signal types are supported by the 1C31174G33 module?
It supports both 4–20 mA current loops and 1–5 VDC voltage inputs, selectable per channel.
2. How many analog input channels does the module offer?
There are 8 individually isolated analog input channels.
3. Is the module hot-swappable?
Yes, it can be replaced while the system is running, provided the Ovation chassis supports hot-swapping.
4. Does this module offer signal isolation?
Yes, each channel is isolated from others and from ground to prevent interference.
5. What is the typical update rate of signal processing?
The module updates readings every 10 milliseconds.
6. Can the module operate in outdoor or remote environments?
Yes, it is suitable for remote panels and harsh environments, within the specified temperature range.
7. What kind of diagnostics does the module support?
It offers loop integrity checks and real-time fault detection such as wire breaks or signal loss.
8. Is this module compatible with legacy Ovation systems?
Yes, it integrates smoothly with both legacy and current-generation Ovation DCS systems.
9. Does it support both current and voltage inputs simultaneously?
Yes, but each channel must be configured individually for either current or voltage—not both at the same time.
10. What is the installation method for the module?
It is designed to be rack-mounted in a standard Ovation I/O chassis for easy system integration.
Related Models (Same Series or Function)
| Model | Description | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1C31174G01 | Loop Interface Module, Basic Version | 8 | 4–20 mA | 171 × 38 × 216 | 0.95 |
| 1C31174G32 | High-Impedance Analog Input Module | 8 | 1–5 VDC | 171 × 38 × 216 | 0.92 |
| 1C31174G34 | Enhanced Analog Interface w/ Diagnostics | 8 | 4–20 mA, 0–10 VDC | 171 × 38 × 216 | 0.96 |
| 1C31174G35 | Dual-Mode Input (Current/Voltage) Module | 8 | Selectable | 171 × 38 × 216 | 0.97 |
| 1C31169G02 | Analog Output Module | 8 | 4–20 mA | 171 × 38 × 216 | 0.90 |
| 1C31150G01 | Isolated Analog Input Interface | 16 | 4–20 mA | 171 × 38 × 216 | 1.00 |
Popular Emerson Ovation Modules
| Model | Description | Type | Channels | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1C31150G02 | 16-Channel Analog Input Module | AI Module | 16 | 171 × 38 × 216 | 1.00 |
| 1C31166G01 | Digital Output Relay Module | DO Relay Module | 16 | 171 × 38 × 216 | 0.85 |
| 1C31125G02 | Digital Input Module (Dry Contact) | DI Module | 16 | 171 × 38 × 216 | 0.88 |
| 1C31129G03 | RTD Temperature Input Module | Temperature Input | 8 | 171 × 38 × 216 | 0.93 |
| 1C31203G01 | Power Supply Interface Module | Power Interface | – | 171 × 38 × 216 | 1.05 |
| 1C31227G01 | Pulse Accumulator / Frequency Input Module | Frequency Counter | 8 | 171 × 38 × 216 | 0.95 |
