1C31116G03 | Emerson Ovation | Locally Powered Analog Input Module

Product Summary

The Emerson Ovation 1C31116G03 is a 0-20mA Locally Powered Analog Input Module for the Emerson Ovation DCS. It provides 8 channels of 0-20mA analog input with system-side power supply, drawing excitation voltage from the controller rather than the field loop. This design suits applications where field transmitters lack internal loop power or where centralized power management is preferred.

Core Specifications

• Model Number: 1C31116G03
• Type: 0-20mA Locally Powered Analog Input Module
• Channels: 8 analog inputs
• Input Signal: 0–20 mA DC
• Power Supply: System-powered (local excitation from controller)
• Resolution: 13–16 bits (per configuration)
• Accuracy: ±0.1% of full scale
• Input Impedance: 250 Ω (typical for current loop)
• Dielectric Isolation: 1000 V AC/DC (channel-to-channel and channel-to-logic)
• Mounting: Rack mount
• Manufacturer: Emerson (formerly Westinghouse)

Key Features

• System-powered design eliminates need for field-side loop power
• 8-channel high-density analog input for process variable monitoring
• Galvanic isolation prevents ground loops and electrical interference
• High accuracy ±0.1% for precise process measurement
• Rack-mountable for standard Ovation I/O cabinet installation

Environmental Limits

• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Storage Temperature: -40°C to +85°C (-40°F to 185°F)
• Humidity: 0% to 95% RH, non-condensing

Frequently Asked Questions

What is the 1C31116G03 used for?

It is an 8-channel 0-20mA locally powered analog input module for Emerson Ovation DCS, converting current loop signals from passive field transmitters into digital data using system-side excitation power.

What does "locally powered" mean?

The module supplies excitation voltage from the controller to power the current loop, rather than drawing power from the field device. This is ideal for passive transmitters that lack internal loop power.

What is the difference between 1C31116G02 and 1C31116G03?

The 1C31116G02 is field powered (draws power from the loop). The 1C31116G03 is locally powered (supplies power from the system). Choose based on whether your transmitters are active (self-powered) or passive (require external excitation).

What is the difference between 1C31116G03 and 1C31116G04?

The 1C31116G03 is for 0-20mA locally powered applications. The 1C31116G04 is an mV compensated analog input module for thermocouple and RTD applications.

Installation Guide

Safety Precautions

• De-energize the Ovation rack before installation
• Use proper ESD protection when handling the module
• Verify field transmitter is passive (requires external excitation)

Step-by-Step Procedure

1. Power down the Ovation I/O rack
2. Align the module with the rack slot and insert firmly
3. Secure the module retaining clips
4. Connect passive transmitter wiring to the terminal base unit
5. Power up and verify module status LEDs
6. Calibrate input channels via Ovation engineering station

Selection Tips

• Use 1C31116G03 for passive transmitters requiring system excitation
• Use 1C31116G02 for active (self-powered) 0-20mA transmitters
• For 4-20mA applications, consider 1C31227G01 or 5X00070G01
• Ensure total loop current does not exceed module power budget

Related Part Numbers

• 1C31116G01 — mV/VDC Non-Compensated Analog Input
• 1C31116G02 — 0-20mA Field Powered Analog Input
• 1C31116G03 — 0-20mA Locally Powered Analog Input (this part)
• 1C31116G04 — mV Compensated Analog Input
• 1C31227G01 — 4-20mA Analog Input Module
• 5X00070G01 — 4-20mA Analog Input Module, High Speed