Product Details:

The Emerson 1C31194G02 is a rack-mounted valve positioner personality module built for Emerson Ovation RIOMAU remote I/O master unit, widely deployed in thermal power plants and heavy industrial process automation. This valve positioner personality module must pair with RIOMAU master base card and provides 23.75V AC peak-to-peak, 3kHz LVDT excitation signal to drive linear variable differential transformers for position feedback. It works with electro-hydraulic servo valves to deliver high precision valve control, reading real-time valve stem position and sending position data back to Ovation DCS system. The module compares the target valve opening command with actual position value and adjusts servo coil output to keep valve position stable for turbine governing valves and boiler feedwater valves. Each channel supports parameter calibration and configurable alarm thresholds to match different hydraulic actuator specifications. Front panel LED indicators display real-time working status for technicians to quickly find sensor faults and circuit abnormalities. It continuously monitors channel health status, detecting LVDT sensor break, signal loss and circuit abnormality faults, and sends diagnostic alerts to the Ovation operator workstation for maintenance scheduling. Built-in galvanic isolation and surge suppression circuits block electromagnetic interference and transient voltage spikes from long field cables, protecting internal measurement circuits and DCS rack backplane in noisy industrial environments. Industrial-grade signal processing chips and rugged reinforced PCB layout are adopted, featuring strong anti-vibration performance and stable long-term operation under environments with dust, humidity and temperature fluctuation. It uses standard rack slot plug-in structure for simple installation and fast replacement during on-site maintenance, effectively cutting down equipment maintenance downtime. The Emerson 1C31194G02 cooperates with RIOMAU master unit, termination bases, CPU modules and rack power supplies to build complete Ovation DCS process control solutions. It is widely used in steam turbine governing valve control, boiler feedwater regulation, chemical plant hydraulic actuator positioning and oil & gas pipeline automation, delivering dependable LVDT-based valve position control and minimizing unexpected downtime of process production equipment.

Specifications

Brand: Emerson (Ovation)

Model: 1C31194G02

Product Type: Valve Positioner Personality Module

Function: 3kHz LVDT excitation output, valve position feedback acquisition, channel fault self-diagnosis

Application: Ovation distributed control rack system, power station, chemical plant, oil & gas pipeline automation

Feature: 23.75V AC peak-to-peak LVDT drive, 500 ohm minimum load impedance, galvanic isolation, rack slot mounting, matched RIOMAU master base card required