4
1. How the System Works
This product can be used as a remote-control system (the utility power company controls charging/discharging) or a
stand-alone system (the storage battery system operates by itself).
Servers operated by Utility
LAN
LJ-NA02
Broadband
router
Internet
Grid
LJ-SK84A
Control commands for
charging/discharging
Remote-control
system
Stand-alone
system
RS485
External Server
1-1 Remote-control system
In remote-control system, the product controls the charging and discharging in accordance with the remote control
commands which are determined by the programs in the utility power servers. The system operates identically to a
stand-alone system during periods when there are not any control commands from the utility.
Control commands
from the utility
operate the system.
Stand-alone
system operates
by itself.
Control commands
from the utility
operate the system.
Remote-control
commands
Storage battery
system
ON
OFF
* Operating remote-control system requires a network adaptor (LJ-NA02) and network environments to access the server of the
utility power company.
* With the remote-control system, the storage battery system operates giving priority to control commands from the utility.
* Select an operation mode when operating the stand-alone system. For details, see the explanation of 1-2 stand-alone system.
* As for the operations of the storage battery system via the programs of the server of the utility, contact the utility you are
contracted with.
* 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.
