Description
Product Overview
The Emerson 1C31122G02 is a 16-channel solid-state digital output module built for the Ovation distributed control system. It converts DCS discrete logic commands into field switching signals to operate solenoids, contactors, pilot valves and other DC field loads. This part is end-of-life from the original manufacturer, commonly sourced as spare replacement stock for power, pulp & paper, and water treatment plant DCS racks.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 1C31122G02 |
| Manufacturer | Emerson (Ovation) |
| Module Type | Digital Output Module |
| Channel Count | 16 channels |
| Output Voltage | 5–60 VDC |
| Per-channel continuous current | 0.5A |
| Total module current rating | 8A |
| Isolation | 500VDC channel-to-channel isolation |
| Switching type | Solid-state |
| Response time | <1ms |
| Power requirement | 24VDC backplane supply |
| Max power draw | 5W |
| Operating temperature | 0°C to 60°C |
| Storage temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Mounting | DIN rail, Ovation rack mount |
| Weight | 350g |
Engineer Notes
- Each channel includes built-in short-circuit and reverse polarity protection to limit damage from field wiring faults. LED indicators on the module front face show channel status for quick on-site troubleshooting.
- Match this card with compatible Ovation backplanes when replacing; cross-check rack slot firmware and wiring terminal assignments before power-up.
- The 1C31122G02 is a revision variant of 1C31122G01. Verify point database configuration when swapping revisions; some register mapping differences may require point tuning.
- Use ESD control during removal and installation. Disconnect rack power before pulling or inserting the module to avoid backplane damage.
Pre-Shipment Test Protocol
- Visual inspection: Check board traces, connectors, front panel and LED windows for physical damage or corrosion.
- Continuity and isolation test: Verify channel isolation at 500VDC between individual output channels.
- Functional bench test: Apply 5–60VDC field load across all 16 channels, trigger each channel from Ovation controller and confirm correct on/off state at both LED and load side.
- Power cycling: Cycle module backplane power 10 times, confirm no latch-up or channel dropout.
- Document test results and take photos for QA records.
Buyer FAQ
Q: Can I directly replace 1C31122G01 with 1C31122G02? A: Mechanical form factor is identical and fits the same Ovation rack. Review system point configuration before hot cutover. Minor register differences may require database adjustment.
Q: What loads work with this module? A: DC solenoids, relay coils, low-power contactors and discrete status indicators within 5–60VDC and per-channel current limits. It is not designed for AC loads.
Q: Is this new original Emerson stock? A: Original factory production has stopped. Available units are surplus, refurbished or used tested stock. We provide 12-month warranty on tested units.
Q: Does the module come with terminals? A: Terminals are not always included. Confirm terminal block inclusion at time of order.
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