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1-2 Stand-alone system
Stand-alone system has three operation modes determined by the way the storage battery is used, the maximum self-
consumption mode, programmed charge/discharge time mode, and back-up mode. Select an operation mode to use
the storage battery. See 8-2 to see how to select.
* If you are a user of the remote-control system, the stand-alone system operates when the programs are not issuing control
commands. The operation mode needs to be set.
* In order to correct the remaining battery level, charging and discharging operation are stopped once a day (From 3:00 to 3:30),
except in the backup mode operation.
„ Maximum self-consumption mode
• The product works in harmony with PV generation.
• By storing excess electricity in the product during the day, clean energy can be used around the clock even after
the sun goes down. This allows not only for the maximum utilization of clean energy, but also reduces the user's
electricity bills.
* Energy is not sold to the utility while the product is discharging.
„ Programmed charge/discharge time mode
• The customer can set the charge or discharge time on the product directly. The battery will be charged or
discharged only during this designated time. At other times it will not be charged or discharged.
* Energy is not sold to the utility while the storage battery is discharging.
* Set the charging/discharging duration. See 8-4 to see how to set it.
„ Back-up mode
• Always charge the storage battery until it is fully charged, after it has been completely charged it is in standby in
preparation for a power failure.
1-3 Back-up operation
When power fails, the product can supply electrical power to the Back-up socket.
* Switch the operation mode manually to back-up operation when power fails. Switch the operation mode manually to grid
operation when the power comes back on. For details, see Chapter 5.
* Back-up operating time is dependent on the "battery remaining" and "connected load". See Chapter 8-3.
NOTICE:
* This is not an UPS (Uninterruptible Power Supply).
* The degree of deterioration and the remaining amount of battery influence power supply time.
* Back-up socket can not be used during Grid Operation.
* The amount of electricity that can be used in back-up socket is the maximum 1kVA.
* If maximum power supply in back-up socket is more than 1kVA, power supply will stop.
* The low power factor equipment will not work.
* Power supplied from this product is not completely same as the commercial power supply.
* When the battery level reaches zero, the "Buck-up" operation will automatically stop.
The operating state of dimming lights may differ in the case of operating in grid mode and in the case of operating in back-up
mode.
The following equipments are supposed to be connected to the Back-up socket.
* LED light bulb/Florescent desk lamp/Incandescent lamp
* Modem
* Router
* Cellular telephony/Smart phone/Tablet computer
* Portable TV/Radio
5
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