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3.6 Starting the inverter                                                                

Before turn on the inverter, please confirm: 

1)  Three AC wires (PE/L/N) cable correctly connected to the inverter AC side through AC circuit breaker; 

2)  The DC cable connected correctly to the inverter DC side through DC circuit breaker, please be attention 

to the cable connected to the two string correctly and it’s polarity; 

3)  The unused terminals are covered. 

Starting the inverter: 

Step1: Close the DC and AC circuit breaker; 

Step2: If the solar panels provide enough energy, the power module will work and the LCD panel will be 

lit; 

Step3: In case you are starting the inverter for the first time, the inverter needs to be commissioned. 

Commissioning is described on page 16, chapter 4.3 

Step4: Then the inverter will turn into self-check mode and the LCD panel will display the remaining time 

of connect simultaneously; 

Step5: After the inverter turn into normal mode, it feeds electrical energy into grid, and LCD panel will 

display the generated electrical energy. 

As long as the inverter works, it will automatically track the maximum power point to absorb the maximum 

energy from solar. When night comes, the irradiance is not strong enough to provide energy, the inverter will 

power off automatically. When the next day comes, the input voltage reaches the start value, it will start again 

automatically. 

4. User interface  

4.1 Led and key                                                             

 

Figure 4-1 LED display 

No. 

Object 

Description 

Run 
(Green LED) 

On = Normal operation 
Flashing = Waiting, checking or starting up 

Fault 
(Red LED) 

On = Failure 
Flashing = Temporary failure 

Pushbutton 

Pressing < 1 s: Next 
Pressing > 2 s: Enter 

Summary of Contents for NAC4K-DS

Page 1: ...0...

Page 2: ...n 8 3 2 Installation environment 8 3 3 Installation position 9 3 4 Mounting procedure 10 3 5 Electrical connection 11 3 6 Starting the inverter 14 4 User interface 14 4 1 Led and key 14 4 2 LCD displa...

Page 3: ...ghout the manual important information is shown at different levels depending on the character of the information as shown here Safety information important for human safety Violation of warnings may...

Page 4: ...fore installing the inverter Check the voltages of the solar modules and make sure they are within the limits of the inverter specifications before connecting them to the inverter Installation Only tr...

Page 5: ...ters 2 1 Mechanical design Figure 2 1 shows the outline dimensions of NAC4K DS NAC5K DS NAC6K DS NAC7K DS NAC8K DS Figure 2 1 Outline dimensions Figure 2 2 shows the electrical terminals of NAC4K DS N...

Page 6: ...3 I O Port 4 Communication port 5 AC terminal 6 LCD 7 LEDs Run Fault 8 Key 2 2 Electrical system design Figure 2 3 wiring diagram of the inverter system Please refer to chapter 3 for the detail conne...

Page 7: ...DC Insulation Monitoring Integrated Input Reverse Polarity Protection Integrated Anti island Protection Integrated Residual Current Monitoring Integrated Over heat Protection Integrated AC Overcurrent...

Page 8: ...49 CZ Czech Republic power Grid meet Grid standards EN50438Y2007 CZ 20 IEC61727 India power Grid 21 Korea Korea power Grid 22 EN50549 SW Sweden power Grid 23 China W China power Grid Grid voltage rang...

Page 9: ...DS and 3 PV connectors for NAC7 8K DS There are 2 PV connectors for NAC4 5 6K DS and 3 PV connectors for NAC7 8K DS Figure 3 1 package information 3 2 Installation environment 1 In order to achieve o...

Page 10: ...must be suitable for the inverter s weight and dimensions 2 Mount on a solid surface 3 Select a well ventilated place sheltered from direct sun radiation Figure 3 3 installation position In considerat...

Page 11: ...holes in the wall according to the dimensions Step2 Fix the wall mounting bracket on the wall with 4 expansion bolts in accessory bag Setp4 Place the inverter on the wall mounted bracket and install...

Page 12: ...inverter There are 2 trip thresholds for the RCD as required for certification IEC 62109 2 2011 The default value for electrocution protection is 30mA and for slow rising current is 300mA Connect the...

Page 13: ...s with DC connector otherwise it will cause damage to inverter 3 Make sure the maximum open circuit voltage Voc of each PV string does not exceed the inverter input voltage Vmax under any condition 4...

Page 14: ...d 1000m 2 Communication lines must be separated from other power lines to avoid communications interference Remark RS485 port PIN3 A PIN4 B Figure 3 9 RS485 Port Figure 3 10 RS485 in multiple series F...

Page 15: ...ge 16 chapter 4 3 Step4 Then the inverter will turn into self check mode and the LCD panel will display the remaining time of connect simultaneously Step5 After the inverter turn into normal mode it f...

Page 16: ...er W Clear events Power W Factory setting Power W Clear E total Power W PF xxx Power W Setting Add Pac W Factory setting English Factory setting VDE4105 Factory setting 2 Factory setting Factory setti...

Page 17: ...xport power 5 Set Export power as 1 press pushbutton long to save the value 4 7 Self Test in accordance with CEI 0 21 Applies to Italy only The self test is only required for inverters which are commi...

Page 18: ...ys setting Other AUTOTEST enter into Auto Test interface 4 Click Execute to start the test 5 The inverter will automatically run the test until the screen shows Test end 6 Click Read to read the test...

Page 19: ...Detailed information about the entire system modules circuits etc 5 Documentation of previous claim exchanges if applicable In the case of an exchange the remainder of the warranty entitlement will b...

Page 20: ...bility 4 If grid is ok and the problem exists still maybe the fuse in the inverter is open please call service Low Temp Over Temp 1 The internal temperature of inverter is higher or lower than specifi...

Page 21: ...20 P N 422 00022 02...

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