WESTINGHOUSE 1C31227G01 | Ovation Analog Input Module, 16 Channel, New

Description Key Technical Specifications Parameter Value Model Number 1C31227G01 Product Type Analog Input Module System Compatibility Westinghouse Ovation DCS Channel Count 16 Input Type Single-Ended, 4–20 mA DC Resolution 15 bits Accuracy ±0.1% of span at 25°C Input Impedance 250 Ohms Isolation Channel-to-backplane isolated Power Consumption ~5.5 W (typical) Mounting Ovation Standard I/O Rack   Product Introduction The Westinghouse 1C31227G01 is a 16-channel Analog Input module from the legacy Ovation DCS line. It is designed to interface directly with 4-20mA field transmitters for pressure, flow, level, and temperature, converting those signals into process values for the controller. Honestly, this is a staple module in older Ovation systems, known for its dense channel count and reliable signal conditioning. It provides 15-bit resolution, which is sufficient for most regulatory control loops and process monitoring. This unit is available as new surplus or professionally refurbished stock. Pricing for these legacy modules can vary; contact us for a firm quote.  Frequently Asked Questions (FAQ) Q: Is the 1C31227G01 the same as the newer 5X00300G02? A: Functionally, they are similar. Both are 16-channel, 15-bit analog input modules for Ovation. The 1C31227G01 is an older part number from the Westinghouse era. The 5X00300G02 is the later Emerson part number. In many cases, they are direct replacements, but you must verify compatibility with your specific Ovation rack and controller revision. If your system was configured for a 1C31227, a 5X00300 will often work, but check the I/O database pin-for-pin. Q: Can I hot-swap this module? A: To be blunt, don’t. While Ovation racks are powered, pulling any analog module live risks a glitch on the backplane bus. This can cause a momentary spike or drop in all 16 values, potentially upsetting a control loop. I recommend de-energizing the I/O rack or at least forcing the associated points to a safe state before swapping. Q: I have an old module with a burnt channel. Can I replace just the failed part? A: No. These are multi-layer boards with surface-mount components. Attempting a field repair on a fried input channel is almost never successful and usually damages the board beyond any hope of repair. It’s a safer and more reliable path to replace the entire module. Q: What’s the difference between single-ended inputs and differential on this module? A: This specific module, 1C31227G01, uses single-ended inputs. That means all 16 signals share a common ground (loop return). It’s fine for signals within a local area where ground potential differences are minimal. For long distances or noisy environments, you would need a differential input module (like the 1C31224Gxx) to reject common-mode noise. If you’re having noise issues with this board, check your field grounding. Q: How do you test a used module like this? A: We run a full functional test. It goes into an Ovation test rack with a known-good controller. We inject a precise 4.00mA, 12.00mA, and 20.00mA signal into each of the 16 channels using a Fluke 789 and verify the counts read correctly in the engineering software. We also run a 24-hour soak test to catch any intermittent failures. A firmware version check is logged. Q: What warranty do you offer? A: We provide a 12-month warranty. This covers defects in materials and workmanship. It does not cover damage caused by field wiring faults (like dumping 120V into an input) or physical damage during installation. TC-CCR014 I/O TC-FPCXX2 TC-IAH161 TC-OAV081 TC-ODK161 Email: [email protected] Phone: 86 15340683922 Sales:Wu Jiedong Our products are guaranteed for 1 year, with new and original production stopped and imported spare parts. All prices listed on the official website are subject to confirmation by contact: Wu Jiedong (manager). Our product: brand new original packaging Our warranty: All new or repaired parts have a 12 month warranty period beginning Our payment: 100% telegraphic transfer of inventory items before shipment, conditions can be proposed! If you have any downtime spare parts that you cannot find, please feel free to call or use email to contact me. If there are issues that the product cannot solve, please contact me. Product prices can be negotiated. Please do not consider contacting me!