Emerson 1C31194G04 Ovation Valve Positioner Electronic Module

Technical Specifications

Model:1C31194G04

Brand:Emerson

Product Type:Valve Positioner Electronic Module

Applicable System:Emerson Ovation distributed control system, Ovation 3.5 and above version thermal power plant DCS control cabinet

Matching Module:1C31197 series valve positioner personality module

LVDT excitation:Optimized adaptive LVDT drive signal, supports multi‑specification servo coil load

Backplane power:24VDC from Ovation I/O base

Isolation:1000VAC field‑to‑backplane galvanic isolation

Installation:Plug‑in install on Ovation I/O base, cooperate with valve positioner personality module

Common Revision:G04 hardware revised version

Status Indicator:On‑board LED for power, channel status and enhanced multi‑level module fault indication

Built‑in Function:Servo‑valve coil drive, high‑precision LVDT position signal processing, closed‑loop position regulation, comprehensive loop fault diagnosis, surge interference suppression, cooperate with matched personality module to realize stable control of steam turbine electro‑hydraulic servo valves

Working Temperature:0℃ ~ +60℃

Storage Temperature:‑40℃ ~ +85℃

Protection Class:IP20

Weight:0.42kg

Product Brief:

1C31194G04 is Emerson Ovation enhanced‑diagnostic valve positioner electronic module G04 hardware revision, it is the upgraded successor of G03 version, applicable to Ovation 3.5 and higher system versions, must work together with 1C31197 series personality module.

It is plugged onto matched I/O base, outputs drive signal for servo‑valve coil, processes LVDT position feedback signal and completes high‑precision closed‑loop adjustment for steam turbine governing valves.

Compared with previous generations, this module optimizes fault diagnosis logic, can identify coil open‑circuit, short‑circuit and feedback signal abnormality more accurately, convenient for on‑site fault locating, widely used for steam turbine electro‑hydraulic control system in thermal‑power‑plant.

1000VAC galvanic isolation separates field actuator side from DCS logic backplane, suppresses ground‑loop interference and transient surge damage.

Built‑in multi‑state LED indicators help technicians quickly judge module working state and fault grade.

Supports hot‑swap operation, can be replaced online without system shutdown for convenient site maintenance.

No extra software configuration required after correct physical installation, system automatically identifies matched personality hardware.

This is EOL discontinued spare part widely used for maintenance and renovation of thermal power plant Ovation DCS system.

Please confirm matching 1C31197 series personality module and Ovation system version before purchase.

Strict ESD anti‑static protection shall be followed during installation and replacement.