Why Solar Legato?

Extensive track record
Businesses in a wide range of industries, including warehouses, factories, supermarkets, and welfare facilities, have installed Solar Legato.
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Solar Legato Features
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High-precision control technology
High-precision control with patented technology is realized by our long-cultivated technological development capabilities.
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Optimize the entire power generation facility
Optimal energy management throughout the power plant, with flexibility for the future.
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Linkage with remote monitoring
For early detection of problems and monitoring of power generation status, which is necessary for stable operation of solar power generation.
Industry-leading responsiveness
Reduce the time and cost of equipment selection and additional purchases

*May vary depending on inverter manufacturer and equipment configuration.

Self-consumption control Supported manufacturers
Yingli Green Energy Japan WEST HOLDINGS XSOL
SMA Japan Canadian Solar Japan Qcells
clean venture 21 Sungrow Japan SANSHA ELECTRIC MANUFACTURING
Suntech Power Japan SANYO DENKI GS Yuasa
(GS YourSignfra Systems(formerly Sanken Electric) incl.)
JA SOLAR JAPAN Shindengen Electric Manufacturing SolarEdge Technologies JAPAN
SOLAR FRONTIER Diamond&Zebra Electric DMM.com
DELTA ELECTRONICS (JAPAN) TMEIC Trina Solar Japan
Nissin Electric Japan Energy Holdings Next Energy & Resources
NEMY Panasonic SANYO Electric Hitachi Industrial Equipment Systems
Huawei Technologies Japan fujisaki electric FUJI ELECTRIC
MARICI Japan（Former:ABB) Mitsubishi Electric MEIDENSHA
YASKAWA Electric
Storage battery control Supported manufacturers（Including schedule）
EDISON POWER CONNEXX SYSTEMS GS Yuasa
(GS YourSignfra Systems (formerly Sanken Electric) incl.)
Sumitomo Electric Industries Chint Tesla
DELTA ELECTRONICS(JAPAN) Toshiba IT & Control Systems NITTO KOGYO
Huawei Japan Murata Manufacturing MEIDENSHA
YAMABISHI

※Please inquire for the model number.

Reliable Support System
Equipment Warranty
The measurement terminal Solar Link ZERO comes with a warranty for up to the number of years of the contract*, and other equipment comes with a 1-year equipment warranty.

*1 year for Solar Legato match/stand alone

*In case of contract extension, warranty will be continued.

Alternate Line Guarantee
In the event that the telecommunication line service at the time of your contract is terminated in the future, we will provide a separate alternative line.
Patented technology maximizes power generation

This system has been patented (Patent No. 6364567) as a power generation control system that automatically controls the output of the inverter using an output command value calculated by a unique formula. The system automatically controls the inverter in accordance with fluctuations in power consumption, reducing the risk of reverse power flow and enabling effective use of power generated and maximization of power generated, which was previously excessively suppressed.

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Feature
Reduce communication load and achieve higher speeds

Inverter pickup control

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※Some inverters may not be eligible. Please contact us for details.

To a control method with high enough speed to inhibit RPR activation.

Unique algorithm for high-speed control in 1-second increments

The communication load has been reduced by our unique “inverter pickup control” algorithm, which controls a limited number of inverters, and the time lag associated with control has been greatly improved from the conventional 6-second cycle to 1-second cycle* measurement and control by changing to measure only power consumption at high speed.

*Controls are timed as needed to match changes in power consumption.

Storage Battery Control

Enables control of recharge/discharge of storage batteries for optimal control of the entire system.

It supports operations with less power purchase and enables more effective use of generated power.

When Solar Legato Battery is installed in a system including storage batteries

The system is controlled by output command values (%) calculated from the relationship between power generated, power consumed, and storage battery empty capacity to optimize power generation.

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When recharging storage batteries

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When storage battery is discharged

Based on the calculated rechargeable power, the maximum output power is determined, and the inverter is commanded to generate power and the storage batteries are commanded to recharge, respectively.

Based on the calculated dischargeable power, the maximum output power is determined, and the inverter is commanded to generate power and the storage batteries are commanded to discharge power, respectively.

Control Parameter Setting Screen

Priority charging

Specify a time period and command the storage batteries to charge the generated power regardless of power consumption or power generation.

Priority Discharge

Specify a time period or threshold value and command the storage batteries to forcibly discharge.

Maintenance of residual quantity

The minimum remaining capacity of the storage battery is specified in %, and discharge is controlled to the extent that it does not fall below this level.

Solar Legato Battery
Local
Easy on-site PR display

Local display screen for private consumption

The Solar Link ZERO T5's HDMI output enables direct connection to a display for hassle-free and cost-effective local viewing.(Paid) Local display of self-consumption items and storage battery information according to Solar Legato's measurements is possible.※


※Displayable items: power generated, amount of power generated, amount of power purchased, amount of power consumed, storage battery output power, remaining storage battery power, sunlight intensity, temperature

Measurement screen

Graph screen

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Product Information

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