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3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Relay Output Base Module (Low Power) |
| Number of Channels | 16 |
| Relay Type | G2R electromechanical, 1 Form C contact |
| Contact Configuration | Form C (SPDT) |
| Dielectric Isolation | Typically 2200 V AC/DC (contacts to logic) |
| Power Supply | Auxiliary / system dependent (commonly 24–55 V range noted) |
| Power Consumption | Low (approx. 4.5–4.8 W typical) |
| Operating Temperature | 0 to 60 °C (common rating) |
| System Compatibility | Emerson Ovation DCS |
| Form Factor | Base / panel for relay output modules |
4. Product Introduction
The Emerson 1C31223G01 is a 16-channel low-power Relay Output Base Module for the Ovation distributed control system. It provides the mounting base and field terminations for G2R-style electromechanical relays with Form C (SPDT) contacts.
This base is used when the Ovation system needs to switch moderate AC or DC loads such as pilot lights, small solenoids, interposing relays, or low-power actuators. It is the low-power version of the Ovation relay output bases and is commonly found in power plants and process facilities that require discrete relay outputs with galvanic isolation between the control logic and field devices.
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Relay does not energize | Coil power missing, failed relay, or command issue | ✅ High | Measure coil voltage and listen/feel for relay click | Verify power and replace individual relay if needed |
| Contacts do not switch | Welded or failed contacts | ✅ High | Measure continuity across Form C contacts | Replace the affected relay |
| Multiple channels fail | Base power or backplane issue | ✅ High | Check auxiliary power and status indicators | Verify power feed to the base |
| Intermittent operation | Loose terminal or poor contact | ✅ Medium | Inspect and tighten field terminals | Clean and reseat connections |
| High contact resistance or arcing | Overloaded contacts or end of life | ✅ High | Measure contact voltage drop under load | Replace relays; check load ratings |
| Module not recognized | Configuration or seating problem | ✅ Medium | Confirm hardware ID in Ovation tools | Match configuration to installed base |
If problems continue, capture Ovation diagnostic data, photos of the base and relays, and contact technical support with the serial number.
1C31223G01
1C31223G01
6. Frequently Asked Questions (FAQ)
Q: What is the 1C31223G01 used for?
A: It is a 16-channel low-power Relay Output Base Module that provides Form C (SPDT) relay contacts for switching field devices from the Ovation system.
Q: What type of relays does it use?
A: It is designed for G2R-style electromechanical relays with 1 Form C contact arrangement.
Q: Is this the high-power or low-power version?
A: This is the low-power relay output base. There are separate high-power relay base variants in the Ovation family for higher current loads.
Q: Can individual relays be replaced?
A: Yes. The G2R-style relays are typically plug-in and can be replaced individually when a single channel fails.
Q: Is this module still in production?
A: Many older Ovation relay bases are no longer actively manufactured. New surplus and refurbished units remain available. Confirm compatibility with your system revision before ordering.
Q: Why is surplus stock often less expensive?
A: New Surplus units are unused OEM material that never entered service—typically excess project inventory. They are functionally new but may lack the latest factory packaging or original manufacturer warranty paperwork. Every unit is tested and carries our warranty.
Q: How do you test these bases before shipping?
A: Each unit receives visual inspection, power and continuity checks, individual relay coil and contact verification, and a functional test of multiple channels. Test documentation is available on request.
