Emerson Ovation 1C31116G02 0-20mA Field Powered Analog Input Module

Product Summary

The Emerson Ovation 1C31116G02 is a 0-20mA Field Powered Analog Input Module for the Emerson Ovation distributed control system (DCS). It provides 8 channels of 0-20mA analog input with field-powered operation, drawing power directly from the current loop and eliminating the need for an external power supply. The module converts analog signals from field transmitters into digital values for processing within the Ovation control system.

Core Specifications

• Model Number: 1C31116G02
• Type: 0-20mA Field Powered Analog Input Module
• Channels: 8 analog inputs
• Input Signal: 0–20 mA DC
• Input Range: 0–20 mA (field powered)
• 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)
• Current Rating: 1/16 A per channel
• Voltage Rating: 250 VAC
• Mounting: Rack mount
• Manufacturer: Emerson (formerly Westinghouse)

Key Features

• Field-powered design eliminates need for external power supply
• 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 1C31116G02 used for?

It is an 8-channel 0-20mA field-powered analog input module for Emerson Ovation DCS, converting current loop signals from field transmitters into digital data for process control.

What does "field powered" mean?

The module draws power from the field current loop itself, eliminating the need for a separate external power supply. This simplifies wiring and reduces installation cost.

What is the difference between 1C31116G02 and 1C31116G03?

The 1C31116G02 is field powered (draws power from the loop). The 1C31116G03 is locally powered (requires external power supply from the system).

What is the difference between 1C31116G02 and 1C31116G01?

The 1C31116G01 is an mV/VDC non-compensated analog input module. The 1C31116G02 is specifically for 0-20mA field-powered applications.

Installation Guide

Safety Precautions

• De-energize the Ovation rack before installation
• Use proper ESD protection when handling the module
• Verify field device current loop compatibility (0-20mA)

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 0-20mA field wiring to the terminal base unit
5. Power up and verify module status LEDs
6. Calibrate input channels via Ovation engineering station

Selection Tips

• Verify field transmitter output is 0-20mA (not 4-20mA)
• For 4-20mA applications, consider 1C31227G01 or 5X00070G01
• For locally powered 0-20mA, select 1C31116G03 instead
• Ensure loop resistance is compatible with field-powered design

Related Part Numbers

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