Overview
The Westinghouse 1C31227G01 is a dedicated analog input personality module for the Ovation distributed control system. This module functions as a modular interface card that expands the system’s analog measurement capability by processing 8 simultaneous current-based analog inputs. The 14-bit digital resolution ensures signal accuracy suitable for process monitoring and control loops across energy, chemical, and manufacturing applications.
Key Features
- 8 analog input channels — simultaneous measurement of multiple process signals
- 4–20 mA input range — industrial-standard current signal compatibility
- 14-bit resolution — precise data acquisition and conversion
- Field-powered support — option for external transmitter power configuration
- Low power consumption — main power 1.2 W typical, auxiliary power 4.1 W typical
- No configurable jumpers — factory-set for plug-and-play installation
Technical Specifications
- Channels: 8 analog inputs
- Input Signal Type: 4–20 mA current
- Resolution: 14-bit
- Main Power: 1.2 W typical, 2.5 W maximum
- Auxiliary Power (Backplane): 4.1 W typical, 7.2 W maximum
- Auxiliary Supply Voltage: 24 VDC ±5%, +6.25%
- Two-Wire Transmitter Power: 13.5 V minimum (Pn+ to An+) @ 20 mA
- Cable Type: Shielded I/O cables (suppresses noise and transients)
- Module Type: Personality Module (Ovation I/O subsystem)
- Configuration: Fixed — no field-adjustable jumpers
Typical Applications
- Power plant instrumentation and control loops
- Process monitoring in refining and chemical facilities
- Field transmitter signal acquisition (pressure, temperature, flow)
- SCADA-based energy management systems
- Water treatment and utilities automation
- Manufacturing process oversight and quality assurance
Compatibility & Replacements
Compatible With
- Ovation Distributed Control Systems (Westinghouse/Emerson)
- Ovation analog input module base cards
- 24 VDC auxiliary power from DCS backplane
- 4–20 mA industrial transmitters and sensor outputs
- Standard Ovation terminal block connectors
Replaces / Drop-In Replacement For
The 1C31227G01 is a personality module component and does not directly replace other standalone modules. It functions as the signal conditioning card within the Ovation 14-bit analog input module assembly. Verify compatibility with your Ovation system documentation before ordering.
Works With
- Ovation I/O Reference Manual (R3-1150) and later
- Westinghouse/Emerson Ovation DCS configuration and commissioning tools
- Standard HART-compatible two-wire transmitters (with shielded cabling)
- Ovation process historian and HMI platforms
