The circuit for the light detection remains the same as the original solar tracker while the servo is now replaced by a 12V DC linear actuator which is supplied by a 12V battery or power supply and controlled by two relays. Alternately, you can also drive the tracker with a stepper motor which is also controlled by the Arduino
You can click the Start, Stop, or Reset icon to send the corresponding command to the SUN2000. Before setting the running parameters of the solar inverter, ensure that the DC side is energized. Because of permission restriction, log in as Advanced User. Choose Device Monitoring > SUN2000 > Running Parameters to go to the settings page.
If the solar inverter outputs reactive power at night and this parameter is set to Enable, the solar inverter will shut down automatically if it detects that the voltage compensation of the PID module is abnormal. If this parameter is set to Enable, the RS485-2 port can be used.
The I-V curves should be scanned again. If OVGR linked shutdown is set to Enable, the solar inverter shuts down after receiving the OVGR signal. If this parameter is set to Disable, the solar inverter does not shut down after receiving the OVGR signal. This parameter is displayed only when the Japanese grid code is selected.
In some specific application scenarios, a power grid company requires that the solar inverter can perform reactive power compensation at night to ensure that the power factor of the local power grid meets requirements. This parameter is available only when Isolation is set to Input ungrounded (with TF).