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Product Introduction
The Ovation 1C31189G03 Speed Detector Module is a dedicated signal interface module developed by Emerson for use within its Ovation Distributed Control System (DCS). Engineered to interpret and transmit speed-related signals, this module is vital for ensuring the safe and efficient operation of rotating industrial equipment such as turbines, compressors, and pumps.
Designed to accept inputs from magnetic pickups or proximity sensors, the 1C31189G03 converts the frequency of these signals into digital data that can be used for monitoring, control, or safety interlocking. With a strong focus on signal integrity and reliability, the module is ideal for real-time speed detection in high-demand environments such as power plants, chemical processing facilities, and oil and gas installations.
Integrated directly into the Ovation system rack, this module offers precise performance, diagnostic features, and seamless communication through Emerson’s proprietary backplane architecture.
Product Specifications
| Parameter | Specification |
|---|---|
| Model | 1C31189G03 |
| Manufacturer | Emerson |
| Product Type | Speed Detector Module |
| System Compatibility | Emerson Ovation Distributed Control System (DCS) |
| Input Signal Types | Magnetic pickup, proximity sensor, pulse-type signals |
| Input Voltage Range | 0–30 V peak-to-peak (AC) |
| Frequency Response | 0 Hz to 20 kHz |
| Input Channels | Typically 2 channels (sensor-dependent) |
| Input Impedance | >100 kΩ |
| Signal Conditioning | Integrated noise filtering, adjustable thresholds |
| Power Supply | Via Ovation backplane |
| Mounting Type | Rack-mounted (Ovation chassis) |
| Status Indicators | LED indicators for signal status and diagnostics |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity Range | 5% to 95% RH, non-condensing |
| Certifications | CE, UL, CSA, RoHS compliant |
| Dimensions (W × H × D) | 120 x 50 x 165 mm |
| Weight | 0.32 kg |
Product Applications
The 1C31189G03 Speed Detector Module is used across a wide range of industries where accurate and responsive speed measurement is critical to operational safety and control. Key applications include:
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Gas and Steam Turbine Speed Monitoring: Real-time input for turbine protection systems.
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Compressor Overspeed Detection: Prevents mechanical failures caused by overspeed conditions.
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Generator Synchronization and Protection: Ensures safe operational speeds during grid connection.
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Centrifuge and Fan Control: Monitors rotational speeds in critical process equipment.
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Pumping Stations: Supports motor control logic in variable speed pump applications.
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Oil & Gas: Used in upstream and downstream speed monitoring in hazardous zones.
Product Advantages
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High Signal Accuracy: Processes signals from a wide range of sensor types with low latency.
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Real-Time Monitoring: Enables immediate response to overspeed or underspeed conditions.
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Built-In Diagnostics: Provides onboard status LEDs and error detection to simplify maintenance.
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Noise Immunity: Equipped with robust input filtering to reject electrical noise and false signals.
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Direct Rack Integration: Mounts directly into Ovation chassis, eliminating wiring complexity.
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Proven Reliability: Designed for continuous operation in harsh industrial conditions.
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Modular Scalability: Easily scaled for multi-unit systems or turbine sets.
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Low Maintenance Requirements: Requires minimal field servicing due to solid-state design.
Frequently Asked Questions (FAQs)
1. What is the primary function of the 1C31189G03 module?
It detects and processes speed signals from external sensors, converting them into digital inputs for the Ovation DCS.
2. Can the module interface with any type of speed sensor?
It supports magnetic pickup and proximity sensors, which are commonly used in industrial speed detection.
3. How many input channels are supported?
The module generally supports two sensor input channels.
4. Does this module perform signal conditioning?
Yes, it includes internal filtering and threshold adjustment features.
5. What is the maximum frequency it can detect?
It can detect signals up to 20,000 Hz (20 kHz), which suits most rotating machinery.
6. Is this module hot-swappable?
No, it should be installed or removed with the power off to avoid system faults.
7. What certifications does it have?
It is certified to CE, UL, CSA, and RoHS industrial standards.
8. Is the module field-configurable?
Most configuration is handled within the Ovation control software, with minimal hardware adjustment.
9. How is the module powered?
It is powered directly via the Ovation I/O chassis backplane.
10. Is there LED status indication available?
Yes, onboard LEDs indicate signal reception and diagnostics.
Related or Similar Models
| Model | Description | Function | System Compatibility |
|---|---|---|---|
| 1C31189G01 | Speed Detector Interface | Signal conditioning for speed | Ovation DCS |
| 1C31192G01 | Pulse Input Module | High-frequency digital input | Ovation |
| 1C31197G01 | Overspeed Protection Interface | Trigger alarms on overspeed | Ovation |
| 1C31234G01 | Magnetic Pickup Interface | AC frequency input from sensors | Ovation |
| 1C31194G01 | Vibration Signal Interface | Machinery vibration detection | Ovation |
| 1C31125G02 | Frequency-to-Analog Converter | Speed feedback via analog | Ovation |
Popular Ovation Models
| Model | Description | Category | Key Features |
|---|---|---|---|
| 1C31166G02 | Analog Input Module | I/O Module | Multi-channel, 16-bit precision |
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| 1C31110G03 | Digital Input Module | I/O Module | Optical isolation, 32-point input |
| 5X00167G01 | CPU Controller Module | System Controller | Redundant architecture, fast cycle time |
| 1C31194G01 | Vibration Monitoring Interface | Machinery Health | Vibration-to-digital signal conversion |
| 1C31238H01 | RTD/TC Temperature Input Module | Temperature Input | Supports multiple sensor types |
