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Building a Gigabit-Backboned Energy Management System for a Cigarette Factory

Location / Country : Hangzhou/China

Product Solutions:
EDS-608/EDS-611/EDS-616/EDS-619 Series

8, 8+3G, 16, 16+3G-port compact modular managed Ethernet switches

EDS-728 Series

24+4G-port Layer 2 Gigabit modular managed Ethernet switches

Project Introduction

To reduce carbon emissions, the government of China is promoting energy efficiency through subsidy and incentive programs that encourage carbon-intensive, energy-consuming industries to implement Energy Management Systems (EMS). An EMS monitors, controls, and optimizes the performance of energy generation/transmission systems.

A state-owned cigarette company in Hangzhou embraced this energy efficiency program and began a project to deploy an EMS. This EMS would encompass many energy-related systems, including the air-conditioning system, ventilation system, and fuel and gas system. By monitoring the real-time status of each system, the EMS optimizes energy efficiency. In an EMS like this one, industrial Ethernet switches play a key role in creating a highly reliable network backbone for data communication.
However, not just any Ethernet switch will do. Most of these switches were to be installed on the factory floor, so the switches must withstand the harsh operating conditions of a busy industrial setting. In addition, because the EMS aggregates a large amount of data from numerous systems, the network backbone needs both scalable bandwidth and network redundancy in order to ensure continuous operations and future-proof adaptability to emerging requirements. For the Hangzhou cigarette factory, Moxa’s Ethernet switches delivered both industrial ruggedness and high network performance, creating a Gigabit-capacity backbone network with a network recovery time of under 50 ms.

System Requirements


  1. Redundant ring topology for high data availability
  2. Scalable, sustainable network infrastructure with Gigabit bandwidth capability
  3. Rugged design capable of operating under harsh environmental conditions





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Moxa Solution
The energy management system of the Hangzhou cigarette factory is divided into several energy sub-networks; each includes a wide range of energy management subsystems, such as water cooling, air conditioning, fuel and gas, steam rooms, and power transformer systems. These subsystems are connected to PLCs and RTUs for data collection, and then the data is sent to the control center through Ethernet switches.    
This system must process a huge amount of data, so it needs support from a reliable Gigabit-capacity network backbone that can carry multiple data, voice and video streams converged on one network. Therefore, each subsystem is equipped with Moxa’s EDS-611 series 8+3G-port compact modular managed Ethernet switches, which support up to 3 Gigabit ports for data communication and modular design. In this way, the factory creates a fast Gigabit backbone while retaining high flexibility in port configurations.
In addition, EDS-728 series Gigabit modular managed Ethernet switches connect the sub networks and the backbone network, where two Moxa ICS-G7848 industrial core switches are deployed for ring redundancy.
With Moxa’s solution, the EMS network is reliable and can take advantage of Moxa’s proprietary self-healing Turbo Ring technology, which provides network recovery in less than 50 ms in the event of a failure in a single network link. Moreover, by exploiting the many advantages of Moxa’s industrial Ethernet switches, such as industry-proven reliability, flexible deployment and solution integration, the cigarette factory reduced the total cost of ownership of their EMS.

Why Moxa


  1. Fanless design with -40 up to 75°C operating temperature
  2. Turbo Ring redundancy technology (recovery time under 50 ms @ 250 switches)
  3. Modular design for flexible deployment
  4. A single-source complete solution, simplifying troubleshooting and maintenance
  5. Lower total cost of ownership