Description
Product Overview
The Emerson Ovation 1C31116G05 is a 16-channel analog input module for the Ovation distributed control system. It converts analog current and voltage signals from field transmitters into digital values for the Ovation controller. Each channel supports software-selectable signal ranges and includes galvanic isolation to limit ground loop interference and protect DCS backplane circuitry. It is deployed for pressure, flow, level and temperature measurement in power generation, boiler and pulp & paper control cabinets. OEM production has ended; available stock consists of surplus or refurbished tested replacement units for Ovation I/O racks.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 1C31116G05 |
| Manufacturer | Emerson (Westinghouse Ovation) |
| Module Type | Analog Input Module |
| Channel Count | 16 channels |
| Input Signal | 4–20mA, 0–10V, ±10V, per-channel configurable |
| Resolution | 16-bit |
| Accuracy | ±0.1% full scale at 25°C |
| Isolation | 1000VDC channel-to-backplane galvanic isolation |
| Backplane Supply | 24VDC |
| Power Draw | 5.8W max |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Mounting | Ovation standard rack slot |
| Weight | 400g |
Engineer Notes
- This is a complete integrated I/O module; no separate personality card required. Hot-swap can be performed when site lockout/tagout procedures are followed.
- Front panel LEDs indicate module health and per-channel fault states. The module detects open loops, shorted wiring, underrange and overrange input conditions. Open transmitter wiring is the most common field fault.
- Configure signal range for each channel in the Ovation point database before commissioning. Incorrect range settings produce scaled measurement errors.
- Use shielded twisted pair cable for all analog input wiring. Separate instrument cables from high-current AC power cables to reduce common-mode noise.
- This module does not supply loop power. 4–20mA transmitters require an external 24VDC field supply.
- Apply ESD controls while handling. De-energize rack power before module removal or insertion if hot swap is not approved. After replacement, calibrate all channels and verify point scaling.
Pre-Shipment Test Protocol
- Visual inspection: Check PCB, edge connector, front panel LEDs and housing for bent pins, corrosion or component damage.
- Continuity and isolation test: Verify 1000VDC isolation between field input circuits and backplane logic.
- Functional bench test: Connect precision signal source to each channel, inject low, mid and full-scale values for all supported signal types, confirm readings match reference values.
- Fault simulation: Simulate open circuit and out-of-range signals, confirm module logs diagnostic alarms.
- Power cycling: Cycle backplane power 10 times, confirm channel readings remain stable after each restart.
- Save test logs and photos for QA records.
Buyer FAQ
Q: Can I swap 1C31116G05 directly with older revision 1C31116Gxx modules? A: Physical form factor fits the same rack slot. Confirm controller firmware and point database configuration before cutover. Check channel range definitions.
Q: Does this module support HART communication? A: No. This analog input module only captures analog values. HART device diagnostics are not available. Select dedicated HART AI modules if bi-directional HART access is needed.
Q: Is this new original Emerson factory stock? A: OEM production has stopped. Available units are surplus or fully refurbished tested stock. We offer a 12-month warranty on tested units.
Q: Are terminal blocks included? A: Terminal blocks are not included unless explicitly noted on your quote. Confirm terminal assembly availability at order placement.
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