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Installation Guide 

DLX seriesL00410622-01 

 

13 

 

Ensure that the conductors are listed for PV applications and the site environment, and 
that they have the correct color coding. 

 
 

2.4. Electrical Installation  

Contact the local utility company for interconnection agreements and power approval 
before connecting to the grid.  
 
Correct electrical connection is critical for achieving a safe, long-term and reliable 
operation of the entire PV system. 
 

 

NOTICE

 

 

Only persons who are qualified to install high voltage electrical equipment and are 
familiar with the electrical regulations applicable to the installation site may install 
the inverter. This is to ensure a safe connection and avoid electrocution! 

 

 

DANGER

 

 

Never work with live wires! All work on the inverter must be performed with 
disconnected terminals, as contact with live wires may cause serious injury or 
death!

 

 
 

2.4.1. Connection Area 

The 

DC connections

 are achieved by the use of a Stringbox with DC switch and three sets 

of DC connectors. The connection of the 

AC and the network 

cables are with screw 

terminals and a RJ45 connector.  

 

 

Figure 2.4.1: Stringbox with DC switch

 

1.

 CAN bus terminal 

2.

 RS-485 terminal 

3

 Ethernet port  

4.

 Internal DC terminal blocks, 

+POS

 

and 

-NEG

 

5.

 Internal DC ground receptacle, 

GND/PE

 

6.

 Stringbox equipped with DC switch  

7.

 Internal AC terminal block 

Summary of Contents for DLX 2.0

Page 1: ...DLX Installation Guide DLX 2 0 DLX 2 9 DLX 3 8 DLX 4 6 MAKING MODERN LIVING POSSIBLE SOLAR INVERTERS...

Page 2: ...er its products without notice This also applies to products already on order provided that such alterations can be made without subsequent changes being necessary in specifications already agreed All...

Page 3: ...Installation 13 2 5 Required Safety Equipment 23 2 6 Checks before Start Up 24 3 Start Up 25 3 1 Initial Start 25 3 2 Self Test for Italy 36 4 Connection between Inverter and PC 38 4 1 Without a Netwo...

Page 4: ...o workers and or the general public if not avoided WARNING Situations where a potentially hazardous condition exists that could result in the death or serious injury of workers and or the general publ...

Page 5: ...meets the EU safety health and environmental protection requirements S NO Serial Number for inverter identification 1 3 Unpacking and Inspection After unpacking the inverter safely check that all com...

Page 6: ...f the foam packaging and take out the inverter mounting bracket Store all the original packaging for possible later reuse Figure 1 3 2 Handles After unpacking the inverter safely check that all compon...

Page 7: ...ea 4 AC output 5 DC input 6 Network input DANGER Always disconnect the PV array cables from the inverter after turning the AC and DC OFF but before removing the covers as the PV array can supply up to...

Page 8: ...ower supply can be used The inverter must be operated in its original and technically intact condition without any unauthorized modifications Always keep the values of operation within the limits give...

Page 9: ...An overcurrent protection device is required on every current carrying conductor If a fuse blows or a circuit breaker trips the cause should always be determined before replacing or resetting them It...

Page 10: ...tion of the LCD screen quality CAUTION Ensure a location where people cannot accidentally come in contact with the rear inverter surface due to temperatures up to 90 C 2 2 1 Wall Bracket Depending on...

Page 11: ...xing clip Figure 2 2 3 Distances between fixing screws D1 232 5 mm D2 232 5 mm D3 75 mm D4 75 mm 2 2 2 Inverter Attach the inverter to the mounting bracket as follows Figure 2 2 4 Hooks on the back of...

Page 12: ...e DC switch es are OFF and that the terminals are in a discharged state to prevent shock hazards DANGER Contact with energized ports may cause lethal injuries All installation of the inverter must be...

Page 13: ...egulations applicable to the installation site may install the inverter This is to ensure a safe connection and avoid electrocution DANGER Never work with live wires All work on the inverter must be p...

Page 14: ...lectrical malfunctions occur All metal parts of the DLX inverters are electrically bonded to ground through the terminal labeled GND in the AC terminal block CAUTION If the positive or negative PV con...

Page 15: ...om the nameplate rating and at higher temperatures the PV voltage decreases from the nameplate rating NOTICE Ensure the DC switch in the Stringbox is in the OFF position when removing the lower cover...

Page 16: ...al for the grounding strap P4 Ungrounded terminal DS DC Switch Negative Grounded PV String Figure 2 4 7 Negative grounded PV string The inverter is delivered from the factory in an ungrounded PV strin...

Page 17: ...ll connections Ensure compliance with the relevant national electrical regulations Conductor insulation rating must be higher where the backs of the modules cannot receive cooling or where the ambient...

Page 18: ...fore turning ON the DC switch es and the AC circuit breaker s 2 4 3 4 Jumper Position for the System Grounding Setup The jumper above the NEG terminal in the customer connection area monitors the arra...

Page 19: ...electrocution The DLX series are single phase output inverters which are designed so that they can be connected to a three phase system When several inverters are connected together they must be dist...

Page 20: ...with the relevant national electrical regulations The AC conductor resistance should be minimized Unscrew the cable gland locknut Guide the AC cable through the opening and connect the conductors to t...

Page 21: ...ication with Danfoss compatible third party products or to Danfoss CLX products Figure 2 4 11 Connection without network 1 Follower inverter 2 Master inverter 3 CAN bus cable 4 Ethernet cable 5 RS 485...

Page 22: ...3 if more cables 4 Guide the assembly into the cable gland 5 Connect the cables to the terminals in the connection area as follows Ethernet Plug the Ethernet cable directly into the RJ45 socket CAN Th...

Page 23: ...ries The pins must be disconnected on the inverters between the first and last inverters in the linked series To disconnect the pins the jumper must be pulled up and placed only on one of the pins Be...

Page 24: ...the DC polarity is correct AC side Verify that the AC conductors are correctly connected to the AC terminals Grounded conductors Check that the grounded conductors are properly sized and not fused or...

Page 25: ...the configuration of all inverters in a plant via one inverter The Start Up can then be carried out on any inverter and if configured as the master inverter the configuration settings of time date lan...

Page 26: ...power the display shows the Start Up screen 3 1 2 1 Function keys The function keys have the following uses Table 3 1 Function keys Symbol Function Symbol Function Up Scroll up increase value Right N...

Page 27: ...rid No action NONE Yellow Inverter is OFF Power 7WDC No action 3 1 2 3 LCD Screen To navigate in the LCD screen the six function keys must be used By selecting one of the seven items in the Main Menu...

Page 28: ...all up the list of languages Up or Down Navigate through the list to find the preferred language English German French Spanish Italian etc Enter Confirm Right Next Enter Confirm 3 Date DD MM YYYY Ente...

Page 29: ...ta may be overwritten 5 Set Bus ID Enter Call up the digits Up Increase present digit Down Decrease present digit Enter Confirm Left Back Right Next Enter Confirm If RS485 communication is used set a...

Page 30: ...own Select the grid configuration of the actual installation site TN TT IT Undefined Enter Confirm Left Back Right Next Enter Confirm 8 Feeding Phase Enter Call up the list of phases Up or Down Select...

Page 31: ...lue shown in the installation menu is a suggestion and must be confirmed Please call up the digits and change value if required before pressing Enter Enter Call up the digits Up Increase present digit...

Page 32: ...electing the grid code setting either Germany 126 VDE 0126 1 1 or Germany 4105 VDE AR N 4105 The following screen is displayed while the settings are updated Grid Code Selection NOTICE An installation...

Page 33: ...ue to be set is 30 sec and the highest is 99 sec Setting the value to 0 disables the screen timeout and leaves the screen backlight ON at all times 13 Customer Name Enter Call up the keyboard The keyb...

Page 34: ...the wanted letter number symbol is shown It is possible to navigate between the characters by using the Up arrow to set the marker into the text window then using Left and Right to navigate between t...

Page 35: ...rried out on all the follower inverters Look at the displayed menu and the LEDs It is not carried out correctly if the installation menu is still displayed and or the green LED is not lit and the yell...

Page 36: ...ation screen is still shown run through the installation process on the inverter 3 2 Self Test for Italy The Self Test function is only valid for installation in Italy It tests the inverters grid moni...

Page 37: ...een After the test is finalized each test result must be confirmed by entering Next After entering Finish on the last result the screen displays the Inverter Commands menu The test results can be foun...

Page 38: ...N bus cable 4 Ethernet cable 5 RS 485 cable 6 Computer 7 Data logger NOTICE With several inverters connected together via CAN bus the Ethernet cable must be attached to the master inverter only 4 1 1...

Page 39: ...lorer 8 0 or later versions From the web page certain inverter settings can be changed after applying the correct user name and password Type the inverter s IP address in the computer s web browser De...

Page 40: ...all these items are OK and there is still no power fed to the grid please contact the system installer 6 2 Table of Events The inverter automatically identifies operational issues and displays the me...

Page 41: ...sistance is below permitted level The grounding setup is configured incorrect Check the jumper for the grounding setup Jumper Position for the System Grounding Setup If the jumper is correct positione...

Page 42: ...jumper for the grounding setup is positioned incorrect Check the jumper position 2 4 3 4 Jumper Position for the System Grounding Setup Contact the system installer for DC fuse replacement Active pow...

Page 43: ...er limit The inverter tries to restart when the frequency is within the permissible range Check that the country settings have been successfully set in Setup Grid Setup If the failure persists contact...

Page 44: ...e trouble free for many years Performing regularly maintenance will ensure high efficiency and a longer service life for the inverters NOTICE Prior to service and maintenance work the inverter should...

Page 45: ...thorized persons removing the inverter upper cover Unauthorized modifications made to the inverter Inverter is installed commissioned operated or maintained incorrectly Relevant safety regulations and...

Page 46: ...46 Installation Guide DLX series L00410622 01...

Page 47: ...Min on grid power 7 W Efficiency Maximum efficiency 97 2 97 2 97 2 97 3 CEC efficiency 96 8 96 8 97 0 97 0 EU efficiency 96 3 96 5 96 7 96 9 Other Dimensions 610 x 353 x 158 mm 169 5 mm with bracket M...

Page 48: ...ible errors in catalogues brochures and other printed material Danfoss reserves the right to alter its products without notice This also applies to products already on order provided that such alterat...

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