Description
The 5X00226G02 is an 8-channel Analog Input module with HART (Highway Addressable Remote Transducer) capabilities, manufactured by Emerson for the Ovation Distributed Control System (DCS).
The additional digits you provided (174051) likely represent a specific manufacturing batch, serial number, or a factory tracking code. This module is the industry standard for power generation and water treatment applications, providing a bridge between 4–20 mA field instruments and the Ovation controller.
Commercial Status & Lifecycle
- Brand: Emerson (formerly Westinghouse)
- Condition: Available as New Original Surplus or Professionally Refurbished
- Warranty: 12 Months
- Lead Time: Usually ships within 1–2 business days from specialized industrial automation stockists.
Technical Specifications
| Parameter | Specification |
| Part Number | 5X00226G02 (Cross-ref: 1C31222G01) |
| Inputs | 8 Channels, Differential |
| Signal Type | 4 to 20 mA DC |
| Protocol | HART Digital Communication Pass-through |
| Isolation | 1,500 V AC Channel-to-Logic |
| Resolution | 14-bit |
| Impedance | 250 Ohms |
| System | Ovation DCS (Windows or Solaris based) |
Engineering Notes & Field Experience
1. HART Implementation
The “G02” version of this card is a “Smart” module. It allows the Ovation system to communicate with field devices via the HART protocol. This means you can use Emerson’s AMS (Asset Management Suite) to remotely calibrate transmitters, view secondary variables (like a flow meter’s internal temperature), and check device health without a handheld communicator.
2. Baseplate Compatibility
This module must be seated into an Electronics Base (typically a 1C-series baseplate). The baseplate contains the terminal blocks for field wiring.
- Warning: Ensure the jumpers on the baseplate are correctly set for 2-wire (module-powered) or 4-wire (externally powered) devices. Setting a jumper for 2-wire on a 4-wire powered loop can damage the input resistor.
3. Hot-Swapping
The 5X00226G02 is designed for Online Insertion and Removal (OIR). You can replace a failed module while the rack is powered. However, in non-redundant configurations, pulling the module will cause all 8 points to go to “Bad Quality” in the DCS database, which may trigger logic trips or alarms.
4. Common Failure Modes
In high-temperature environments or aging plants, we often see:
- Communication Errors: The “Active” LED fails to blink, indicating a failure to sync with the Controller.
- Individual Channel Drift: One channel reports inaccurate values while the others remain precise—often due to an input component failure from an external surge.
Frequently Asked Questions
Is 5X00226G02 interchangeable with 1C31222G01?
Yes. The 5X-prefix is the modern Emerson global part numbering system, while the 1C-prefix is the legacy Westinghouse numbering. They are functionally identical.
What is the “Error” LED indicates?
A solid red “Error” LED usually indicates a hardware self-test failure. A flashing Error LED might indicate a configuration mismatch between the software project and the physical hardware revision.
Can I use this module for 0–10 V signals?
No. This is a current-input module (4–20 mA). To measure voltage, you would need a different Ovation module or a high-precision shunt resistor, though the latter is not recommended for DCS-level accuracy.
Do you need the terminal block pinout for this module, or are you troubleshooting a “Bad Quality” signal on one of the channels?
