Solutions

Data Center

Proposals for air conditioning systems

Do you have any requests like…?

Avoid system downtime of critical equipment
Want to control air conditioning using an open building system

Solution : Introduce programmable controller MELSEC iQ-R/iQ-F Series

Products of the MELSEC iQ-R/iQ-F series make it possible to build a highly flexible air conditioning system utilizing BACnet ® , which is a common network in the building market. The iQ-R series duplicates each layer of monitoring (SCADA) and the controller network, and also supports a redundant system securing high reliability.

Solution
1. Ensuring high reliability by adopting duplex system
2. Establishing open building systems

Solution 1

Ensuring high reliability by adopting duplex system

The MELSEC redundant system ensures the reliability of critical equipment, such as chillers, that cannot be shut down during data center operations. The system is built with general-purpose products, therefore it can be easilymaintained and updated after installation.

Maintenance and update can be performed after installation without stopping the system

Tool-less online unit replacement
Online addition of slave stations

*Network settings must be completed in advance in the program before using this function.

By connecting a tracking cable capable of extending the distance between the redundant systems to 550 m, the control system and the standby system can be separated. It can be placed far away on the control panel. The optical fiber cable of the tracking cable is not affected by noise and enables high-speed data communication. The system switching time is reduced to 10 ms or less, and high-speed system switching from the control system to the standby system enables continuous control with higher reliability.

Product Lineup

Solution 2

Establishing open building systems

MELSEC iQ-R/iQ-F Series also supports the open networks of BACnet ® and MODBUS ® . Enabling integrated management of various air conditioning system devices and equipment, MELSEC iQ-R/iQ-F Series offers optimal system operation.

BACnet ®

Supports BACnet ® , an open network in the building air conditioning field
Enables integrated management of devices and equipment related to building maintenance, including lighting, cooling/heating, and security management systems.

MELSEC iQ-R Series

BACnet module

RJ71BAC96

MELSEC iQ-F Series

Intelligent function module
Ethernet module

FX5-ENET

Supports BACnet/IP ® protocol

FREQROL-F800 Series

FR-F800

(RS-485 communication type)
Supports BACnet ® MS/TP

FR-F800-E

(Ethernet communication type)
Supports BACnet/IP ®

FREQROL-E800 Series

FR-E800

(standard specification production)
Supports BACnet ® MS/TP

FR-E800-E

(Ethernet specification product)
Supports BACnet/IP ®

OPC UA

In data centers demanding high security, OPC UA security features such as certificates, encryption, and signatures can be arbitrarily configured according to system requirements to enable secure and reliable data communication.

MELSEC iQ-R Series

OPC UA server module

RD81OPC96

FREQROL-E800 Series

Intelligent function module
OPC UA module

FX5-OPC

Server support

Remote monitoring and analysis of field conditions are possible not only from personal computers but also from smart terminals such as smartphones, tablets, and smart glasses. In addition, by utilizing the cloud, it is possible to monitor multiple locations at once and process large amounts of data.

MODBUS ®

Supports MODBUS ® protocol
Supports master and slave functions, and for the master, uses dedicated instructions to control slave equipment.

MELSEC iQ-R Series

Serial communication module

RJ71C24
RJ71C24-R2
RJ71C24-R4

MELSEC iQ-F Series

CPU module

FX5U Internal RS-485
FX5UC Internal RS-485

FREQROL-F800 Series

FR-F800
(RS-485 communication type)

Supports MODBUS ^®RTU

FR-F800-E
(Ethernet communication type)

Supports MODBUS ^®/TCP

FREQROL-E800 Series

FR-E800
(Standard specification product)

Supports MODBUS ® RTU

FR-E800-E
(Ethernet specification product)

Supports MODBUS ^®/TCP

Proposals for air conditioning systems

Do you have any requests like…?

1. Want to eliminate wasteful power consumption
2. Want to maintain equipment properly before breaks down.

Solution : Introduce the inverter FREQROL Series(energy-saving support device)

Solution
1. Reduces power consumption by inverter operation of pumps and fans
2. Detects machine failures

Solution 1

Reduces power consumption by inverter operation of pumps and fans

The optimal output characteristics (V/F characteristics) can be selected to suit the application and load characteristics, and the inverter automatically streamlines motor control without the need for detailed parameter settings. In addition, it has a built-in auto-tuning function that measures the circuit constant of the motor, enabling stable motor drive even if wiring length is long or differences exist between individual motors. Furthermore, the use of an optimal excitation control mode that enables maximum motor efficiency reduces wasteful motor loss, minimizes power consumption, and achieves good cost-effectiveness.

Solution 2

FREQROL detects machine failure and responds quickly even when a problem occurs

Users can store the relationship between speed and torque without failure, compare the current load condition with the stored failure characteristics, and output an error/warning when out of the normal range. It can detect abnormalities such as filter clogging and belt breakage, making maintenance easier.

Availability of life diagnosis checks is extended as compared to the FR-E700 series. This enhanced diagnosis function ensures reliable operation of the system. The design life of cooling fans and capacitors has been extended to 10 years *1 .

*1. Surrounding air temperature: annual average 40°C (free from corrosive gas, flammable gas, oil mist, dust and dirt) Output current: 80% of the inverter ND rating Since the design life is a calculated value, it is not a guaranteed value.

*2. Only supports FR-A800/F800/E800 Series
*3. Inverter main body terminals ABC
*4. Only supports FR-E800 Series

The trace function allows the operating state (output frequency, etc.) immediately before the protective function operation to be stored in the built-in RAM of the inverter. By copying the stored data (trace data) to a USB memory or directly loading it into a PC, trouble analysis is easy with inverter setup software (FR Configurator 2).