Emerson 1C31197G04 Ovation Valve Positioner Personality Module

Technical Specifications

Model:1C31197G04

Brand:Emerson

Product Type:Valve Positioner Personality Module

Applicable System:Emerson Ovation distributed control system, Ovation3.5 and above thermal power plant DCS control cabinet

Matching Module:1C31194G01‑G04 valve positioner electronic module

Internal resistance:160Ω built‑in resistor

Servo‑coil load:Suitable for 125Ω servo coil, max output ±36mA, only supports two servo coils driving, C3+ and C3‑ coil outputs are unavailable

Isolation:1000VAC field‑to‑backplane galvanic isolation

Installation:Plug‑in install together with 1C31194 series electronic module on Ovation I/O base

Common Revision:G04 hardware revised version

Status Indicator:No independent LED indicator, shares status LED of host valve positioner electronic module

Built‑in Function:Servo‑coil current limiting and impedance matching, signal conditioning, surge interference suppression, overvoltage protection, provides physical interface for 125‑ohm electro‑hydraulic servo coils of steam turbine

Working Temperature:0℃ ~ +60℃

Storage Temperature:‑40℃ ~ +85℃

Protection Class:IP20

Weight:0.13kg

Product Brief:

1C31197G04 is Emerson Ovation valve positioner personality module G04 hardware revision, must be paired with 1C31194 series valve positioner electronic module.

It is plugged onto I/O base together with host electronic module, equipped with built‑in 160‑ohm matching resistor, specially adapted for 125‑ohm servo coils, limits output current within ±36mA to prevent servo‑coil over‑current damage. This module only drives two servo coils, C3+ and C3‑ coil outputs cannot be used.

This personality module converts drive signals from electronic module into applicable current signals for turbine electro‑hydraulic servo valves, completes precise adjustment of steam valve opening, widely used in steam turbine governing control loops of thermal‑power‑plant.

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

No extra software configuration required after correct physical installation, host electronic module automatically identifies personality hardware.

Shares hot‑swap, loop diagnosis and surge‑suppression features from matched valve positioner electronic module.

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

Please confirm matching 1C31194 series host module, servo‑coil impedance and channel restriction before purchase.

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