Description
At-A-Glance Executive Brief
- Model: 1C31113G05
- Brand: Emerson Ovation
- Part Type: 8-channel Multi-Range Analog Input Electronics Module
- Lifecycle status: Obsolete OEM, stocked new surplus and refurbished
- System compatibility: Ovation DCS I/O rack platform
- Input range: ±5 VDC voltage or 4-20mA current via personality module
Technical Introduction
Many Ovation racks require mixing voltage and current loop signals from pressure, flow and level transmitters on the same I/O bank. This 13-bit analog input electronics module pairs with a matching 1C31116 personality module to deliver galvanically isolated A/D conversion for eight channels. It installs in standard Ovation I/O backplanes and sends digitized process values back to Ovation controllers. The personality module defines whether each channel bank reads ±5VDC voltage or 4-20mA loop signals, letting plant teams standardize on one E-module hardware across multiple transmitter types.
Best Suited For
- Power plant Ovation DCS rack maintenance and spare inventory stocking
- 4-20mA loop and ±5VDC transducer signal acquisition
- Legacy Ovation system obsolescence planning and component replacement
Core Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1C31113G05 |
| Module Type | Multi-Range Analog Input Electronics Module |
| Channel Count | 8 |
| Input Range | ±5 VDC or 4-20mA (selected by personality module) |
| Resolution | 13-bit |
| Mounting | Ovation standard I/O rack |
| Isolation | Galvanic channel isolation via personality module |
| Required accessory | Matching 1C31116 personality module |
| Backplane Power | 24 VDC |
Please refer to the OEM datasheet for complete environmental tolerances.
Field Engineer’s Tech Notes
- The personality module sets the signal type for this E-module. Installing a personality module configured for 4-20mA while wiring ±5VDC sensors causes saturation and false high readings. Confirm personality configuration before rack power-up.
- 4-20mA loop wiring requires proper loop supply sizing. Insufficient loop voltage will cause transmitter dropout at 20mA and intermittent channel faults that only appear under high process values.
Adaptive QA & Testing Protocol
Each unit undergoes bench testing with precision ±5VDC voltage and 4-20mA current signal simulation across all 8 channels. Conversion accuracy and linearity are validated at multiple signal setpoints. Backplane communication handshake with an Ovation I/O controller verifies rack registration and fault reporting. Terminal pin continuity checks identify bent pins or damaged board traces. Test reports and short validation videos are available upon request.
Buyer’s FAQ
Q: Can Emerson 1C31113G05 directly replace 1C31113G02/G03/G04? A: It fits the same Ovation rack slot, but the supported signal types are different. You must match the personality module and adjust the Ovation I/O database for your signal range.
Q: What warranty covers new surplus or refurbished Emerson 1C31113G05? A: All units carry a 12-month hardware warranty. Warranty excludes damage from miswiring, loop overload or mismatched personality hardware.
Q: Does this module provide loop power for 4-20mA transmitters? A: Loop power is supplied through the personality module. Check your personality module variant to confirm passive or powered loop capability.
Q: What lead time applies to this obsolete Ovation AI electronics module? A: Stocked units ship within 1–3 working days. If inventory is depleted, sourcing lead time may extend to 4–8 weeks based on surplus availability.
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