Powering On the System

Precautions

Before the equipment is put into operation for the first time, ensure that the parameters are set correctly by professional personnel. Incorrect parameter settings may result in noncompliance with local grid connection requirements and affect the normal operations of the equipment.

Before turning on the AC switch between the SUN2000 and the power grid, use a multimeter set to the AC position to check that the AC voltage is within the specified range.

Procedure

1. Turn on the AC switch between the SUN2000 and the power grid.

   If the DC is on and the AC is off, the SUN2000 reports a Grid Failure alarm. The SUN2000 starts normally only after the fault is automatically rectified.

2. If there is a DC switch between the PV string and the inverter, turn on the DC switch.
3. Set the DC SWITCH at the bottom of the SUN2000 to the ON position.
4. Wait for about 1 minute, and then observe the LED indicators of the inverter to check the running status.
   Table 6-2 LED indicator description

   Category	Status		Meaning
   Running indication	LED1	LED2	N/A
   	Steady green	Steady green	The SUN2000 is operating in grid-tied mode.
   	Blinking green at long intervals (on for 1s and then off for 1s)	Off	The DC is on and the AC is off.
   	Blinking green at long intervals (on for 1s and then off for 1s)	Blinking green at long intervals (on for 1s and then off for 1s)	The DC is on, the AC is on, and the SUN2000 is not exporting power to the power grid.
   	Off	Off	The DC is off.a
   	Blinking red at short intervals (on for 0.2s and then off for 0.2s)	N/A	DC environmental alarm
   	N/A	Blinking red at short intervals (on for 0.2s and then off for 0.2s)	AC environmental alarm
   	Steady red	Steady red	Fault
   Communication indication	LED3		N/A
   	Blinking green at short intervals (on for 0.2s and then off for 0.2s)		Communication is in progress. (When a mobile phone is connected to the SUN2000, the indicator first indicates that the phone is connected to the SUN2000): blinks green at long intervals.)
   	Blinking green at long intervals (on for 1s and then off for 1s)		The mobile phone is connected to the SUN2000.
   	Off		There is no communication.
   Note a: The AC may be on. Check whether the external AC switch is OFF.

5. (Optional) Observe the LED to check the operating status of the Smart Dongle.
   • WLAN-FE Smart Dongle
     Figure 6-1 WLAN-FE Smart Dongle
     
     Table 6-3 LED indicator description

     LED Color	Status	Remarks	Description
     N/A	Off	Normal	The Dongle is not secured or is not powered on.
     Yellow (blinking green and red simultaneously)	Steady on		The Dongle is secured and powered on.
     Red	Blinking at short intervals (on for 0.2s and then off for 0.2s)		The parameters for connecting to the router are to be set.
     	Steady on	Abnormal	The Dongle is faulty. Replace the Dongle.
     Green	Blinking at long intervals (on for 0.5s and then off for 0.5s)	Normal	Connecting to the router.
     	Steady on		Successfully connected to the management system.
     	Blinking at short intervals (on for 0.2s and then off for 0.2s)		The inverter is communicating with the management system through the Dongle.

   • 4G Smart Dongle
     Table 6-4 LED indicator description

     LED Color	Status	Remarks	Description
     N/A	Off	Normal	The Dongle is not secured or is not powered on.
     Yellow (blinking green and red simultaneously)	Steady on	Normal	The Dongle is secured and powered on.
     Green	Blinking in a 2-second cycle (on for 0.1s and then off for 1.9s)	Normal	Dialing (duration < 1 min).
     		Abnormal	If the duration is longer than 1 min, the 4G parameter settings are incorrect. Reset theparameters.
     	Blinking at long intervals (on for 1s and then off for 1s)	Normal	The dial-up connection is set up successfully (duration < 30s).
     		Abnormal	If the duration is longer than 30s, the settings of the management system parameters are incorrect. Reset the parameters.
     	Steady on	Normal	Successfully connected to the management system.
     	Blinking at short intervals (on for 0.2s and then off for 0.2s)		The inverter is communicating with the management system through the Dongle.
     Red	Steady on	Abnormal	The Dongle is faulty. Replace Dongle.
     	Blinking at short intervals (on for 0.2s and then off for 0.2s)		The Dongle has no SIM card or the SIM card is in poor contact. Check whether the SIM card has been installed or is in good contact. If not, install the SIM card or remove and insert the SIM card.
     	Blinking at long intervals (on for 1s and then off for 1s)		The Dongle fails to connect to the management system because it has no signals, weak signal, or no traffic. If the Dongle is reliably connected, check the SIM card signal through the APP. If no signal is received or the signal strength is weak, contact the carrier. Check whether the tariff and traffic of the SIM card are normal. If not, recharge the SIM card or buy traffic.
     Blinking red and green alternatively	Blinking at long intervals (on for 1s and then off for 1s)		No communication with the inverter. Remove and insert the Dongle. Check whether inverters match the Dongle. Connect the Dongle to other inverters. Check whether the Dongle or the USB port of the inverter is faulty.