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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications

Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications
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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications

Product catalog summary
Overview
The METZ CONNECT MR-(F-)SM4i and MR-(F-)SM4u energy meters are designed for precise energy measurement in building and industrial applications. They support up to 3 phases plus neutral and utilize the Modbus RTU protocol for data transmission. These meters can be integrated into IP-based networks using METZ CONNECT gateways or third-party Modbus gateways.

Specifications
- Measurement of current, voltage, active power, reactive power, and apparent power.
- Class B measurement accuracy.
- Compact DIN-rail modules with a width of 50 mm.
- Two variants: MR-SM4i for 1 A/5 A transformers and MR-SM4u for 333 mV transformers and Rogowski coils.
- Available with screw or spring-loaded terminals for easy installation.

System Integration
The energy meters can be integrated with METZ CONNECT's EWIO2-M(-BM) data logger and MR-(F-)GW Modbus gateway. They feature pre-integrated templates for easy commissioning. Data can be processed and visualized using the integrated Node-RED environment.

Application Example
In compliance with legal requirements in Europe, companies can use these meters for energy management and optimization. The system records energy data, which can be analyzed and visualized to identify savings and ensure compliance with standards like ISO 50001.

Benefits
- Compatible with various systems via Modbus RTU.
- Accurate energy data acquisition.
- Flexible integration with different transformer types.
- Retrofittable without downtime.
- Comprehensive measurement capabilities.

Product Overview
Various models are available, including MR-SM4i and MR-F-SM4i for current transformers, and MR-SM4u and MR-F-SM4u for voltage transformers and Rogowski coils. Accessories include Modbus gateways, data loggers, power supplies, and transformers.

Contact Information
METZ CONNECT has offices in the USA, France, Austria, China, Hong Kong, and Germany. Contact details are provided for each location.
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Catalog excerpts

Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-1

Energy Monitoring in Building and Industrial Applications

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-2

METZ CONNECT – Energy Meter Modbus RTU Energy Meter Precise Energy Measurement Measurement accuracy in accordance with Class B The METZ CONNECT MR-(F-)SM4i and MR-(F-)SM4u energy meters enable the precise measurement of energy data for up to 3 phases plus neutral (L1, L2, L3, N) using transformers. Data is transmitted via the standardized Modbus RTU protocol. When used in conjunction with the METZ CONNECT Modbus RTU Gateway MR-(F-)GW or the METZ CONNECT EWIO2-M(-BM) data loggers, the recorded measurement data is seamlessly integrated into IP-based network infrastructures. Alternatively, data...

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-3

METZ CONNECT – Energy Meter Bridge Connector System Forwarding of data bus and power supply from device to device without additional wiring Device Variants For current transformers with secondary current (1 A, 5 A), as well as current transformers and Rogowski coils with secondary voltage (22.5 mV/50 mV/225 mV/ 250 mV/333 mV) Modbus RTU via RS485 interface Easy integration with the EWIO2-M(-BM) data logger and MR-(F-)GW Modbus gateway, as well as existing automation systems Compact design Space-saving, only 50 mm (3 TE) wide

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-4

METZ CONNECT – Energy Meter Application Example The Challenge In Germany and Europe, numerous companies are legally required to systematically track and optimize their energy consumption. In addition, some consumers rely on professional energy management even without legal requirements—to reduce energy costs, identify savings potential, and actively contribute to climate protection. Precise energy measurement is the foundation for legally compliant documentation and successful optimization. A manufacturing company operates multiple machines and production lines. To meet legal requirements, make...

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-5

METZ CONNECT - Energy Meter Your benefits > Compatible with MR-(F-)GW, EWIO2-M(-BM), and third-party systems via Modbus RTU > Measurement accuracy according to Class B > Seamless energy data acquisition from machines and systems through to central evaluation > Flexible thanks to various transformer types and current ranges > Retrofittable without downtime thanks to folding transformer > Measurement of up to 3 phases plus neutral conductor > Recording of current, voltage, active power, reactive power, apparent power, and other relevant energy parameters

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-6

METZ CONNECT – Energy Meter System Overview

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-7

METZ CONNECT – Energy Meter Modbus TCP Master Devices Modbus Gateway MR-(F)-GW Third-party manufacturer gateway Energy meters can be accessed via the IP network using the integrated web server of the MR-(F-)GW Modbus gateways and the EWIO2-M(-BM) data logger. The energy meters are conveniently configured via a user-friendly web interface. Preconfigured templates for the energy meters in the MR-(F-)GW and EWIO2-M(BM) enable quick and easy commissioning. Modbus RTU Slave Devices When integrating into third-party Modbus systems, configuration is performed directly via standardized Modbus registers....

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-8

METZ CONNECT - Energy Meter The EWIO2-M(-BM) data logger features an integrated Node-RED environment. Node-RED is a graphical development environment that allows the collected energy data to be processed, analyzed, and visualized directly -simply via drag-and-drop in a web browser. The energy measurement values from the connected energy meters are available in Node-RED. For example, you can detect load peaks, calculate energy costs, or perform efficiency analyses. If power limits are exceeded, email notifications can be sent automatically. Custom energy dashboards with real-time displays, consumption...

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-9

METZ CONNECT – Energy Meter Energy Dashboard The energy dashboard displays all key metrics: current power, energy consumption, and historical trends.

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-10

METZ CONNECT - Energy Meter Modbus RTU Meter, via current transformer (secondary 1A/5A) Modbus RTU Meter, via current transformer (secondary 1A/5A) Modbus RTU meter, via current transformer (333 mV) / Rogowski coil (50 mV) Modbus RTU meter, via current transformer (333 mV) / Rogowski coil (50 mV) Screw terminal Spring-loaded terminal (push-in) Screw terminal Spring-loaded terminal (push-in) Compatible current transformers Current transformers with Current transformers and Rogowski coils with secondary voltage: 22.5 mV/50 mV/225 mV/250 mV/333 mV Detailed information and additional system components...

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-11

METZ CONNECT – Energy Meter System components & accessories Description Modbus RTU / Modbus TCP Gateway Modbus RTU / Modbus TCP Gateway MR-GW MR-F-GW M-Bus data logger M-Bus / BACnet / Modbus data logger Power supply 24 VDC Power supply 24 VDC Current transformer TAmini 50 / 5 A Current transformer TAmini 100 / 5 A Current transformer Folding transformer current 100 / 1 A Folding transformer Folding transformer current 100 / 5 A Folding transformer Folding transformer current 50 A / 333 mV Folding transformer Folding transformer current 100 A / 333 mV Folding transformer

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Modbus RTU Energy Meter – Energy Monitoring in Building and Industrial Applications-12

METZ CONNECT GmbH Im Tal 2 78176 Blumberg Germany Phone +49 7702 533-0 Fax +49 7702 533-189 [email protected] www.metz-connect.com METZ CONNECT Zhongshan Ltd. 200 Tornillo Way Tinton Falls, NJ 07712 USA Phone + 1 732 389 1300 Fax + 1 732 389 9066 Ping Chang Road Ping Pu Industrial Park Sanxiang Town Zhongshan City, 528 463 Guangdong Province China Phone + 86 760 86365 055 Fax + 86 760 86365 050 28, Rue Schweighaeuser 67000 Strasbourg France Phone + 33 38 86 170 73 Fax + 33 38 86 194 73 METZ CONNECT AUSTRIA GmbH c/o German chamber of commerce in Austria Schwarzenbergplatz 5, Top 3/1 1030 Vienna...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.