Schneider LTMEV40FM Voltage Measurement Extension Module

Description

Schneider LTMEV40FM Voltage Measurement Extension Module

Product Overview

The Schneider Electric LTMEV40FM is an expansion module for the TeSys T smart motor management system. It connects directly to an LTMR motor management controller to expand its monitoring capabilities and discrete control I/O.

While the base LTMR controller monitors current and basic diagnostics, the LTMEV40FM adds 3-phase voltage measurement (enabling active power, reactive power, power factor, and energy monitoring) along with 4 additional 100–240 V AC discrete logic inputs.

Technical Specifications

Key Advantages

• Comprehensive Power & Energy Monitoring: Expands basic current monitoring into a full energy management system by tracking power factor (cos⁡ϕ\cos\phicosϕ), active power (kWkWkW), reactive power (kVARkVARkVAR), and total energy consumption (kWhkWhkWh).
• Enhanced Protection Capabilities: Enables voltage-based protections such as over/undervoltage, phase voltage imbalance, phase loss, reverse phase sequence, and power factor alarms.
• Expanded Digital I/O: Provides 4 additional AC inputs for auxiliary signals (e.g., local selector switches, limit switches, trip signals).
• Compact Modular Design: Easily snaps onto DIN rails alongside the main LTMR controller without requiring extra cabinet depth.
• Wide Voltage Compatibility: Works across international standard distribution networks up to 690 V AC.

Important Usage & Installation Precautions

• Auxiliary Power Supply Match: Ensure the supply voltage provided to the module matches 100–240 V AC. (Note: For 24 V DC system configurations, the LTMEV40BD variant must be used instead).
• Terminal Wiring & Fusing: Install appropriate external fuse protection on the voltage sensing lines connected to the L1,L2,L3L_1, L_2, L_3L1​,L2​,L3​ measurement terminals to prevent short-circuit risks during potential module faults.
• Controller Compatibility: The expansion module derives its communication directly from the main LTMR controller; ensure proper connection with the provided ribbon cable before powering up the system.
• Enclosure Protection: Rated IP20. It must be installed inside an IP54-rated or higher electrical switchboard/cabinet when deployed in dusty or humid environments.
• Phase Alignment: Ensure the voltage phase sequence wired to the LTMEV40FM (L1,L2,L3L_1, L_2, L_3L1​,L2​,L3​) strictly matches the current transformer phase routing on the main LTMR controller for accurate power factor and power calculations.

Applications

• Smart Motor Control Centers (MCC): Integrates motor protection and real-time power monitoring into centralized industrial process controllers.
• Critical Process Automation: Used in oil & gas, mining, water treatment, and chemical plants where uninterrupted operation and early fault detection are critical.
• Energy Management Systems (EMS): Provides granular, machine-level energy consumption tracking to support plant-wide energy efficiency initiatives.
• Predictive Maintenance: Monitors voltage distortion, phase imbalance, and power factor changes over time to detect motor degradation before breakdown occurs.

Shipping Port: Xiamen, China

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