Schneider Electric EasyLogic EM6400NG+ RS-485 Energy Meter

Schneider Electric EasyLogic EM6400NG+ RS-485 Energy Meter

Introduction

The Schneider Electric EasyLogic EM6400NG+ is a high-performance energy and power monitoring meter tailored for industrial, commercial, and utility applications. Built for precise metering, diagnostics, and energy efficiency analysis, it is an essential tool for electrical panels where accuracy, reliability, and advanced communication are critical.


Product Range and Type

  • Product Series: EasyLogic

  • Model: EM6400NG+ RS-485

  • Product Type: Power and Energy Meter

  • Reference: METSEEM6400NGRSCL1


Applications

Designed specifically for power monitoring and analysis, the EM6400NG+ supports:

  • Energy consumption tracking

  • Peak demand identification

  • Power quality assessment (up to 15th harmonic)

  • Event and fault analysis through time-stamped logs


Measurement Capabilities

Electrical Parameters Measured:

  • Voltage Types: Line and phase voltages (U21, U32, U13, V1, V2, V3)

  • Current Types: I1, I2, I3, Neutral current, Peak demand

  • Power Types: Active (P, P1, P2, P3), Reactive (Q, Q1, Q2, Q3), Apparent (S, S1, S2, S3)

  • Power Factor: Signed, four-quadrant, Displacement PF

  • Energy Types: Active, Reactive, Apparent (four-quadrant signed)

  • Demand Metrics: Demand power and demand current (present & past values)

  • Frequency: 45–65 Hz with ±0.05% accuracy

  • Unbalance Metrics: Voltage and current unbalance

  • Harmonics: Total Harmonic Distortion (THD) and individual harmonics up to 15th order


Electrical Specifications

  • Supply Voltage: 40–300 V AC/DC

  • Rated Current: 1 A / 5 A

  • Power Consumption:

    • 6 VA at 277 V (Phase-Neutral)

    • 2 W at 277 V

  • Sampling Rate: 64 samples per cycle

  • Accuracy:

    • Voltage, Current, Power: ±0.5%

    • Frequency: ±0.05%

    • Power Factor: ±0.01

  • Compliance:

    • Active Energy: Class 1 (IEC 62053-21)

    • Reactive Energy: Class 2 (IEC 62053-23)

    • Harmonics: Class 5P (IEC 61557-12)


Network and Communication

  • Supported Networks:

    • Single-phase and multi-phase configurations: 1P+N, 2P, 2P+N, 3P, 3P+N

  • Communication:

    • RS485 Port

    • Protocol: Modbus RTU (4800 to 38.4 kbps)

    • Isolation: 2500 V

  • LED Indicators:

    • Green: Communication activity

    • Red: Output pulse (1–9,999,000 pulses/kWh, kVAh, kVARh)


Display and Interface

  • Display Type: Red 7-segment LED

  • Display Format:

    • 3 fields, 4 characters each

    • 12-digit numeric, 14.2 mm character height

  • User Access: Tamper-proof settings with access code protection


Mechanical Design

  • Material: Flame-retardant Polycarbonate (UL 94 V-0)

  • Mounting: Panel or flush-mounted with clamp support

  • Dimensions:

    • Width: 96 mm

    • Height: 96 mm

    • Depth: Panel – 73 mm, Outside – 13 mm

  • Weight: Net – 600 g

  • Terminal Connections:

    • Screw clamp terminals for all circuits

    • Wire sizes: 0.33 mm² to 3.31 mm²

    • Tightening torque: 0.9–1 N.m


Environmental & Safety Standards

  • Protection Rating:

    • Front: IP51 (IEC 60529)

    • Body: IP30

  • Temperature Ranges:

    • Operating: -10 to 60°C

    • Storage: -20 to 70°C

  • Humidity: 5–95% RH at 50°C

  • Altitude: ≤ 2000 m

  • Pollution Degree: 2

  • Installation Category: CAT III (480 V), CAT II (600 V)

  • Insulation Class: Class II


Data Logging and Displayed Information

  • Recorded Data:

    • Energy logs

    • Min/Max of voltage, current, frequency, power factor, power, and demand

  • Demand Intervals: Configurable (1 to 60 minutes)

  • Event Logs: Time-stamped for diagnostic accuracy


Certifications & Compliance

  • Certifications:

    • CE, CULus, C-Tick

  • Standards:

    • IEC 61010-1 (Ed. 3)

    • UL 61010-1

    • CSA C22.2


Environmental Impact and Sustainability

Schneider Electric is committed to sustainable practices under its “Use Better, Use Longer, Use Again” initiative. The EM6400NG+ supports:

  • Packaging made from recycled cardboard

  • RoHS compliant (SCIP #1e118aef-b19c-4467-88e5-d3127183205f)

  • WEEE directive adherence

  • Circularity profile available


Packaging Information

  • Package Type: Single unit (PCE)

  • Dimensions:

    • Height: 10.3 cm

    • Width: 11.6 cm

    • Length: 13.2 cm

  • Weight: 500 g

Troubleshooting Guide

Below are some common issues that may occur while operating the EM6400NG+ energy meter, along with recommended actions:

IssuePossible CauseRecommended Solution
No Display on Meter- No power supply to the meter
- Loose terminal connections
- Ensure the power supply voltage (40–300 V AC/DC) is present
- Check and tighten all terminal connections
Incorrect Readings- CT polarity reversed
- Improper configuration of CT/PT ratios
- Verify CT installation direction and polarity
- Reconfigure the CT/PT settings via user interface
Communication Failure (RS-485)- Incorrect baud rate or parity setting
- Loose communication cable
- Grounding issues
- Match communication settings with SCADA/PLC
- Check RS-485 wiring and insulation
- Ensure proper grounding and shielding
No Pulse Output- Incorrect wiring of pulse output
- Output threshold not reached
- Verify pulse output connection
- Confirm that consumption is sufficient to trigger pulse
LED Indicators Not Working- Internal fault or LED failure
- Power supply issue
- Power cycle the device
- Contact Schneider support if issue persists
Unstable Readings- Electrical noise
- Poor grounding
- Improve system grounding
- Install filters if necessary
Access Denied to Settings- Tamper-proof access code enabled- Use the correct access code or reset via admin support
Demand Values Not Updating- Incorrect demand interval setting
- Demand reset not performed
- Reconfigure demand interval (1–60 minutes)
- Reset demand values manually or schedule automatic reset

Conclusion

The EasyLogic EM6400NG+ Energy Meter by Schneider Electric is a robust, versatile, and intelligent solution for modern energy monitoring needs. With high-precision measurement, detailed power quality analysis, and reliable data communication, it stands as an industry standard for energy professionals aiming for efficiency, safety, and sustainability.