ProSoft MVI56-LTQ Limitorque Valve Communication Module

The ProSoft MVI56-LTQ is a dedicated communication module developed for Rockwell ControlLogix PLC platform. It acts as a master gateway to communicate with Limitorque electric valve actuators, realizing bidirectional transmission of valve status feedback and remote control commands.

This module supports dual serial ports and can manage up to 150 valve devices on the bus network. It is widely stocked as spare parts for pipeline, oil & gas and petrochemical automation control system maintenance.

Main Specifications

• Brand: ProSoft Technology; Model: MVI56-LTQ; Type: Limitorque Valve Master Communication Module
• Applicable System: Rockwell ControlLogix PLC control chassis
• Core Tasks: Limitorque protocol communication, valve status collection, remote valve control, network diagnosis
• Interface: Dual serial communication ports, ControlLogix backplane connector
• Installation: Single slot plug-in mounting inside ControlLogix rack
• Supported Devices: Limitorque MX/DDC, UEC-3-DDC, DDC-100M and Valvcon IVO valve actuators
• Operating Environment: 0℃ ~ +60℃, 5%‑95% RH non‑condensing, industrial anti‑vibration grade
• Certifications: CE, compliant with industrial automation EMC and safety standards

Core Functions

• Operate as communication master to poll Limitorque valve network and upload valve position, fault and running status data to PLC controller.
• Receive open, close and emergency shutdown commands from ControlLogix CPU and distribute instructions to corresponding field valve actuators.
• Adopt dual-port polling mechanism, configurable baud rate and communication parameters via supporting configuration software.
• Store valve data in internal register space for PLC ladder logic to access and complete process interlock control.
• Equipped with LED diagnostic indicators for quick judgment of module, backplane and field bus communication status.
• Modular single-slot design supports convenient installation, replacement and system expansion during on-site maintenance.

Application Scenarios

• Spare-part replacement for ControlLogix automation racks used in oil & gas transmission, petrochemical and pipeline stations.
• Special communication hardware for electric valve remote control, pipeline safety shutdown and valve state monitoring systems.
• Maintenance backup inventory for renovation and after-sales maintenance projects of Limitorque valve automation control systems.
• Matching communication module cooperating with ControlLogix CPU, power supply and digital/analog I/O modules.
• Retrofit replacement for aged modules with bus polling failure, command loss and valve feedback data abnormality faults.

• Global aftermarket spare supply for automation maintenance teams maintaining Rockwell and Limitorque integrated control equipment worldwide.