Danfoss DLX 2.0 UL, DLX 2.9 UL, DLX 3.8 UL, DLX 4.4 UL User Manual

MAKING MODERN LIVING POSSIBLE

DLX

User Guide

DLX 2.0 UL - DLX 2.9 UL - DLX 3.8 UL - DLX 4.4 UL

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1.

2.

3.

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5.

ONT

Introducti

Product O

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2.1.
G

2.2.
W

2.3.
U

2.4.

Safety Pr

G

3.1.
Si

3.2.
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3.3.

Installati

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4.1.
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4.2.
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4.3.

Start Up...

Ini

5.1.

NTS

on .............

verview ....

ndards and

neral Inform

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chanical Ins

ecks Prior to

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s ....................

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lation .............

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. 10

14

. 14
. 16
. 18

21

. 21
. 24
. 25

44

. 44

6.

7.

8.

9.

10.

Operatio

C

6.2.
In

6.3.

Troubles

C

7.1.

7.2.

Maintena

S

8.1.
R

8.2.
R

8.3.
R

8.4.

Warranty .

W

9.1.
W

9.2.

Tech

In

10.1.

Fi

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nnection be

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54

. 67
. 70

76

. 76
. 76

81

. 81
. 81
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. 89

90

. 90
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91

. 91
. 93

User G

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e

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p

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o

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t

r

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n

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o

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o

d

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m

e

h

e

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y

o

3.3.

•

or i
eq

•

If t

7.2.

•

3.3.

•

DC
loc
ind

•

•

DC
sys

Table

In

.1. Gro

GFDI prote

the PV con
ipped with
e ground fa

Table of Eve

rating of th

.2. DC F

uses protec
ted in the S

pendently.

rating of th

ufacturer,

uses are no

em installer.

.1: DC current c

erter Type

DLX 2.0 UL
DLX 2.9 UL
DLX 3.8 UL
DLX 4.4 UL

nd Fault

ts the negat

uctors. It is

finger-safe

lt current e

ts).

GFDI is 600

ses

the conduc

ringbox, eq

DC fuses sh
L requireme
mally not a

aracteristics an

Max

Curr

9.5

13.

18.

21.

Protectio

ve/positive
ocated in th
use holder.
ceeds 1A th

and 1A.

DC

ors from ba

ipped with

ould be as p

ts and NEC,

art of the sc

d recommende

DC

nt

A
A
A

n (GFDI)

rounded str

lower com

GFDI open

k feed curre

inger-safe fu

r the recom

with a maxi

pe of deliv

fuse ratings

1

PV String

Fuses

15A
22A
29A
33A

ings from gr

artment of

and the inv

nts from par

se holders t

mendations

um of 40 A

ry, and mus

2x PV St

Fuse

8A
11A
15A
17A

und faults i

he Stringbo

rter shuts d

llel strings.

disconnect

of the PV m

be provide

ing 3x

the PV arra

and is

wn (Refer t

hey are

each fuse

dule

by the

V String

Fuses

5A

8A
10A
11A

3.3.

•

an

•

AC

User G

NOTI

Overcu
which i
string c
modul

.3. AC O

AC Overcur

the grid.

CD must b

CAU

o red
circuit
Nation

3.2 bel

ide DLX UL series

E

rent protec

equal to 1.

onductors o

product lab

ercurre

ent Detecto

provided b

ION

ce the risk o

rovided wit

l Electrical C

w

L00410625-01

ion is not re

5 x ISC,, from

the maxim

el.

t Protect

(OCD) prot

the system

fire, the inv

branch circ

ode, ANSI/N

uired for PV

all sources c

m overcurre

ion

cts the sup

installer.

rter AC ter

uit overcurr

PA 70, and

strings whe

nnot excee

nt device siz

ly conducto

inals must

nt protectio

aving maxi

e the maxi

the ampaci
specified o

s between t

nly be conn

in accorda
um ratings

um current,

ty of the PV

n the PV

e inverter

cted to a

ce with the

as per Table

1

9

3

n

v

U

D

g

s

e

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h

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d

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p

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r

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g

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0

h

s

e

Table

I

.2: AC current c

verter Type

DLX 2.0 UL
DLX 2.9 UL
DLX 3.8 UL
DLX 4.4 UL

aracteristics an

Max A

208VAC

10.0A

14.0A

18.5A

21.5A

fuse rating

C Current

240V

AC

8.5A

12.0A

16.0A

18.5A

208V

15A
20A
25A
30A

AC Fu

AC

es

40V

15A
15A
20A
25A

Tripping

haracteristic

AC

B or C

Type

s

Double

Pole

3.3.3

Over

DLX

the
volta

•

PV
DC

•

Wh
sur
to

•

Ref

•

IEE

des

Surg

.

oltage prot

L series are

C source cur

e surges to

ystems inst

and AC side

n the cond

e arrester.

btain the re

r to NEC gu

ices.

provides a

igned for ca

Protec

ction is use

quipped wi

rent and the

round.

lled in an o

, as they can

ctors are ex

ne or more

uired level

delines for s

ood base fo

egory B: 100

ion

to prevent
h Temperat
AC output c

en or expos

act as lightn

osed to tra

urge arreste

f protection

lecting app

selecting k

kA – 150 kA

oltage surg

re protected

rrent, whic

d environm

ing rods.

sients, their

rs are neede

.

opriate kA r

ratings of t

per phase.

s through s

etal Oxide

diverts the

nt need ad

behavior lim

in installati

tings for ov

e surge arr

nsitive equi
aristors (TM

xcessive cu

ed protecti

its the effect
ons with lon

rvoltage pr

ster: The DL

ment. The
V) on both

rent from

n on both t

iveness of a

conductor

tection

UL series ar

e

20

U

ser Guide DLX UL

series L00410625-

01

u

4.

T

c

d

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m

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w

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t

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NSTA

his

and

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etails impor

fied person

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ibes how to

ant issues r

who follow

ON

install the in

lated to the

the installat

erter correc
nstallation.
on instructi

ly, both me

he informa

ns as descri

hanically an

tion is inten

ed in this U

d electricall

ded for

er Guide.

,

4.1.

he

dime

DAN

Never
the ter

NOTI

The Sa
installa

echa

ounting sur

sions and h

WAR

Followi
lethal c

ER

ork with en

inals disco

E

ety Precautio

ion proced

ical In

face and the
ousing tem

ING

ng the instal

nsequence

rgized port

nected.

s (refer to 3

res must be

tallati

mounting

erature (Ref

ation instru

.

! All work on

Safety Preca

ead carefull

n

ethod must

r to 10. Tech

tions will pr

the inverter

utions) and t

prior to ins

be suitable f

ical Data).

vent poor p

must be per

he following

allation.

r the invert

erformance

formed with

detailed

r’s weight,

r possible

4.1.1

Depe
the
of fas

•

•

Mo
(Re
ins

•

flo

User G

Wall

.

nding on th

all bracket.

teners to su

bracket is d
inverter mu

nt the inve

er to 3.2.1.
alled.
recommen

r level.

ide DLX UL series

racket

mounting s

he system i

port the we

signed to s
t be mount

ter in compli

ounting Loc

ed height f

L00410625-01

urface, differ

staller is re

ght of the in

pport 176.4

d in a vertic

ance with th

tion). This is

r the conne

ent mountin

ponsible fo

erter on th

lbs. / 80 kg.

l orientatio

e minimum

especially i

tion area is

g methods
selecting th

mounting s

!
pacing to e
portant wit

0 - 55 inche

ay be requi
e correct typ
urface.

sure optim

several inv

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ed to secur

e and numb

m cooling

rters

mm above

r

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bling

racket consi

Figure

ble the bra

ts of three

.1: Wall bracke

ket as follo

arts:

components

s:

erter Bracket

A. In
B. Sp

acer (Optiona
ingbox brack

C. St

l)

t

emble the i

1. As
br

cket openin

2. Fa

ten the spa

22

verter brac

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er by pullin

F

gure 4.2: Assem

et with the s

it over the s

ling the wall br

acer by gui

lit until it is f

cket

ing the spa

stened.

er into the i

U

ser Guide DLX UL

verter

series L00410625-

01

u

abrabra

r

sope

s

e

3

s

The

T

d

m

w

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s

3. M

co

4. As

5. Fa

6. Th

15

Fa

he

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rk the moun

cket as a te
cket to the

rect dimens

emble the S

ning.

ten the spa

correct dis
” (+ 45/64”).

2

ten the Stri

holes in th

istances bet

ting holes o

plate to en
all with min

on of the scr

ringbox bra

er by pullin
ance betwe

gbox brack

Stringbox

een the scr

the mounti

ure that the
imum 2 fast
ews. The hol

ket and the

it over the s

n the invert

t to the wall

racket have

ws:

g surface u

bracket is co

ners. The in

s in the bra

spacer by g

lit until it is f

r bracket an

with minim

diameter o

CC1:
CC2:
CC3:
CC4:

CC5:
D1:
D2: 1

ing a spirit l

rrectly level

taller is resp

ket have a

iding the sp

stened.

d the String

m 2 fastene

½ inch.

3”
6”
7”
2”

3”

1

/

” (+ 45/64”

164

7” (+ 45/64” – 0

vel and the

d. Fasten th

onsible for s

iameter of

acer into the

ox bracket i

s.

0”)

”)

inverter

inverter

lecting the

inch.

bracket

: D3 = 14

Figure 4.3:

istances betwe

User G

ide DLX UL series

L00410625-01

n the fastener

2

3

cpin

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s

m

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r

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k

7

t

t

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m

0

t

4.1.2

Attac

1. Lo

2. Lif

3. En

scr
N

Inver

.

h the invert

ate the hoo
taps on the
the inverter

er taps into

ure that the

ews on the

.

er

r to the mou

Fig

s for the car

Stringbox (B
and guide t
the slots an

inverter is s

ottom of th

nting brack

re 4.4: Fasten th

rier slots (A)

).

e upper ho

slide the in

curely align

Stringbox.

t as follows:

inverter to the

n the uppe

ks into the s

erter onto t

d in the bra

ecommend

bracket

back of the

lots on the i

e bracket.
ket rails, an

d tightenin

inverter and

verter brac

fasten the i
torque is 0.

the locating

et. Align the

nverter with
74 ft-lbf / 1.0

2

4.2.









24

t

A
r
C

C
E
t

ll electrical i

NOTI

Check
electric

hecks

ake sure tha

rminals are i

verter. Refer

gulations.

eck that th

ecifications.

eck that th

sure that th

at they hav

E

hat the inve

l wiring.

Prior t

both the A

n a discharg

to 8.1. Switc
stallations s

PV and the
Refer to 10.
inverter is

conductor

the correct

ter is proper

Electri

circuit brea

d state to p

-OFF.
all comply

rid specific

echnical Da

roperly fast

are listed fo

olor coding

ly fastened a

cal Inst

ker(s) and th

event shock

ith the curr

tions are co
a.
ned and sec

r PV applicat

nd secured t

allatio

DC switch

hazards dur

nt local and

patible wit

red to the

ions and the

o the bracke

re OFF and

ng the instal

federal elec

the inverte

racket.

site environ

U

ser Guide DLX UL

prior to the

hat the

lation of the

rical

r

ent, and

series L00410625-

01

u

nre

E

4.3.

e

n

T

v

m

n

q

e

c

e

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T

c

c

u

s

s

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T

n

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e

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t

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r

v

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d

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s



E

sure that th

gulations in

lectric

electrical i

force at the i

al Insta

stallation c

nstallation s

llation

mplies with
te.

he local an

national ele

ctrical

Corr
the e

ct electrical

tire PV syst

NOTI

he ele

with lo

User G

onnection i
m.

E

trical conn

al and feder

ide.

critical for a

ctions must

l electrical r

igure 4.5: Simpli

chieving saf

e performe

egulations a

ied system over

, long-term

by qualifi
d the instru

view

nd reliable

d persons a

ctions detail

peration of

nd comply

d in this

4.3.1

wo i

and

•

A

is, t

•

Vol

co
is e

User G

Cond

.

mportant cri

oltage drop.

pacity refer

he greater it

tage drop i

ductor. It is

uivalent to

CAU

he co

to prev

ide DLX UL series

uctors

teria must b

Using corre

to the curre

capacity to
the reducti
ecommend

loss in energ

ION

ductor cros

nt overhea

L00410625-01

considered

tly sized co

nt-carrying
carry curren

n of voltage

d to minimi

yield

section are

ing and fire.

in selection

ductors imp

apacity of th

.
due to cross

e the syste

must confo

f conducto

roves the eff

e conductor

section, cur
conductor

m to the rat

sizes, name
ciency of th

The larger t

ent flow an

oltage drop

ings of the N

y ampacity

PV system.

e conducto

length of th
Voltage dro

EC standard

r

e
p

2

5

•

e

g

t

o

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n

e

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o

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n

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n

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h

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n

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n

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•

Us
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adequately
stance.
ure conduct

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sized condu

rs so that t

s).

tors with th

ey are kept

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way from o

perature rat

jects that ca

ng and sunl

n damage t

ght

e insulation

4.3.2

.

CAU

he co

have th

Conn

ION

ductors mu

e correct col

ection

t be listed f

r coding to

rea

r PV applica

avoid mater

ions and th

al damage a

1. CAN

2. RS-

3. Eth

4. Inte

5. Inte

6. Inte

7. DC f

8. Equi

Stri

site environ

nd bodily ha

bus terminal
85 terminal
rnet connecti
nal DC termi

S and -NEG

nal DC groun

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nal AC termi

use board, Str

pment groun

gbox

ment and

rm.

n

al blocks,

terminal,

al block

ingbox

ing bar,

Figure

4.6: Customer c

•

DC

connection

•

AC

connection

•

Ne

opt

ions.

work conn

can be eithe

is performe

ctions are t

26

nnection area

a negative

differently

e same rega

r positive g

epending o

rdless of the

ounded PV

the grid co

different DC

tring config

figuration.

and AC con

U

ser Guide DLX UL

ration.

ection

series L00410625-

01

u

2

D• Theand• The

e

e

d

g

d

b

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X

v

4.3.

The

spe

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LX UL String

Stringbox c

shipped wi

knock outs
cified in the

uits

ox is equip

nnected to

h knock out

re located o

igure below

ed with kn

he bottom

for ¾” and

n the left an

.

ck-outs to fi

f the invert

” conduit fit

right sides,

the conduit
r is made of

ings.

bottom and

fittings.

non-conduc

back of the

ive material

tringbox as

Figur

•

Us
the

•

Pos

•

Dril

•

Car

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Strin

4.7: Knock out

a 1” hole sa

knock outs

ition the hol

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fully file do

NOTI

For con
the en
Condui

•

DC c

•

AC c

•

Net

conduit fitt
box knock

on the Stringb

to remove

or the 1” fitti

saw in the

cover.

n any roug

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duit hubs, u
losure

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ork conduit

ngs that fulf

uts:

x

the knock o
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iddle of th

edges.

e only UL Li

ted to the S
ounted on t
ounted on t
are mount

ill the follow

Figur

ts for the ¾

knock out f

ted raintigh

ringbox as f

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d on the lef

ng criteria s

4.8: Removal o

fittings and

ce.

, or wet loca

llows:

f the String

of the Strin

side of the

ould be use

the knock outs

1- 5/16” hole

tion, hubs fo

ox.

box.

tringbox.

d for the DL

aw to remo

r entry into

HE- t UL

e

User G

ide DLX UL series

L00410625-01

2

7

4

m

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The

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0

Table

Sy

4.3.3

Prop
poin
devic

.1: Recommend

bol Siz

A
B
C

D

E
F

1

1

3

1

2

/

7
3

1

9

1

11

1

NOTI

Follow
ground

Grou

.

r grounding
for the con
es.

Figure 4.9: Size

d size for the c

/

/ 28.8 mm

9

/

/ 35.8 mm

7

” /

7.0 mm

/

/ 35.5

7

/

” / 42.5 mm

1

/

” / 45.3 mm

4

E

he guidelin

ing and tigh

ding

of the entir

uctive parts

criteria for con

nduits

s from the c
ening torqu

PV system l

and facilitat

uits to fit the Str

nduit man
.

mits voltage

s the operat

ingbox knock o

facturer reg

surges, give

ion of the ov

ts

rding conn

s a common
ercurrent pr

ction,

reference

tection

DAN

Groun
and na

ER

ing should
ional electri

•

AC input an

unding, if re

gro
res

onsibility o
Photovoltai
.41 through

res

onsibility o

•

PV

trings may
ductors are

(Fi

ure 4.6, pos.

28

d AC output

uired by Se

the installer

System Gr

690.47 of th
the installer

ave the neg

terminated

).

e carried ou

al regulatio

circuits are i

tion 250 of

unding shall

of the Nati

tive or the

t the equip

by qualified

s to prevent

olated from

he National

be installed

nal Electrica

ositive cond

ent groun

persons onl

shock hazar

the enclosu

lectrical Co

per the req

Code, ANSI

uctors grou
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ds.

e and that s

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irements of
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ded. The gr

e Stringbox

U

ser Guide DLX UL

y with local

stem

A 70, is the

ections

is the

unded

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series L00410625-

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ctions and

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pecification

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cturers

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disconnect t

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ringbox.

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terminals e

bar in the

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ide DLX UL series

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Figure 4.10: D

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k

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s can be
nverter serie
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y!

rminals

d PV array

s

30

U

ser Guide DLX UL

series L00410625-

01

u

The

acom

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4.3.

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25A

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:

ck labeled

ock labeled

fuse board

the DC swit

ls.

itive grounded

. Grounded

1. Ungroun

t the +POS

h at the -N

U

ser Guide DLX UL

V string

n the

ed in the

erminal blo

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series L00410625-

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ection Pr

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ting the PV
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orate the sy

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User G

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L00410625-01

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4.3.

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er Positi

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in the inver

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ration

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partment

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ed PV Confi

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NOTI

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CAU

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terminal bl

grid parame

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VAC/120VAC
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: 59.3 to 60.

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UL inverter

ION

output / Ne

ns (Grid

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YE

Hz

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tral of the i

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tion panel t

o 4.3.2 Conn

he inverter

t range fro

bonded to g

rough one
ction Area).

pecification

184 VAC to

round.

r more circu

before

76 VAC.

t

34

U

ser Guide DLX UL

series L00410625-

01

u

o

e

4

m

s

t

i

d

T

e

e

e

V

5

Themax

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(Abbr.)

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loads mus

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ING

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multi-wire

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ms usually

AC conductors

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r (

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ctors are co

by connecti

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ing conduc

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rs must be

ing of 194°F

L00410625-01

rs connecte

unbalance

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ors on the A

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ors on the A

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etween 10

90°C for all

to a three

system vol

tion the c

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state and fe

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ations from

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V

120

phase to

AC

phase
neutral

240 V

AC

120 VAC

hase to pha
hase to neu

e

ral

208
120

V

AC

V

phase to

AC

phase
neutral

phase to

36

U

ser Guide DLX UL

series L00410625-

01

u

Term

h• Term

h• Term

Term

nabo

w

n

e

t

w

1

t

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6: Connections

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ent.

erminal bloc

ctor at the

y colored) b

box and th

er compart

with neutral

L1 on the

L2/N on th

k labeled N-

rounding b

tween the

unmarked

ment. This is

C terminal

AC termin

in right sid

r in the low

at receptac

receptacle t

to monitor

lock in the

l block in th

of the

r right side

e labeled N

the right o

he voltage

f

User G

ide DLX UL series

L00410625-01

3

7

Singl

Term

h

Term

h

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l

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g

b

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0

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e Phase wit

VAC phase to

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no Neutra

phase only

Figure 4.

•

•

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38

inate the li

rig

t side of the

inate the li

rig

t side of the

inate the e

ne 1 conduc

inverter low

ne 2 conduc

inverter low

uipment g

: Connections

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or at the ter

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ent.

minal labele

ent.
nductor at t

h no neutral

L1 on the

L2/N on th

e groundin

C terminal

AC termin

bar in the

U

ser Guide DLX UL

lock in the

l block in th

tringbox.

series L00410625-

01

u

a

Term

h

o

n

t

e

l

t

m

d

d

d

W

A

b

Delt

: Corner Gr

240

VAC phase to

unded

phase only

Figure 4.18: Co

•

User G

inate the li

rig

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ide DLX UL series

ne 1 conduc

inverter low

L00410625-01

nections for De

or at the ter

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minal labele

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ed and Delta

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lock in the

3

9

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c• Term

n

e

h

t

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n

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lab

rig
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4.3.6

he i

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inver

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k in the rig

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nect the gr

led PE to th

t of the DC
age betwee

Netw

.

verter is eq
net provide
ly connecte

ers. RS-485

rounded ph

t side of the

uipment g

unding str

e left side of

round termi

ground an

ork Con

ipped with
communic

or via a rou

allows com

ase conduct
inverter low

ounding c

p (green an

the AC termi
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the ground

ection

hree comm

tion betwe

er/switch. C

unication w

or at the ter

r compartm

nductor at t

yellow colo

nal block an

erter lower

ed phase.

nication int
n the integr
AN allows c

ith certain th

inal labele

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e groundin

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ompartmen

rfaces: Ethe
ted web-ser

mmunicati

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L2/N on th

bar in the
the flat re

recepta

t. This is to

net, CAN, a

ver and a co

n between s

ipment.

1. Foll

2. Mas

3. CAN

4. Eth

5. RS-4

6. Co

7. Dat

AC terminal

tringbox.

eptacle

le to the

onitor the

d RS-485.

puter, eith

everal

wer inverter

er inverter
bus cable
rnet cable
85 cable

puter
logger

r

4.3.

If sev
prior

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ral inverter

to the Start

igure 4.19:Con

ection Pr

are connec

p procedur

ection without

ocedures

ed together,

to benefit fr

Figure 4.20: N

etwork

all inverters

om single in

twork connecti

must be con

tallation set

n

nected to th
up.

CAN bus

40

U

ser Guide DLX UL

series L00410625-

01

u

A

S

0

N

-120• Term

Tigh

a

C

e

T

a

d

C

s

i

a

y

r

G

N

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e

w

r

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o

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f

i

g

t

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(

+

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2

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4

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n

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n

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n

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s

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d

5

d

5

b

4

f

0

t

N

t

N

1. C

2. R

•

Eth

ernet: Use C

10

•

CA

m.

•

RS

485: Use CA

-

-

-

•

N bus termin

-485 terminal

m.

: Use CAT5

0 m.

inate the c

Ethernet:
CAN:

RS-485:

ten the con

al

T5e or bett

or better,

5e or bette

bles at the t

Plug t

he c
both
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he c
both
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uit fittings

r, with size

ith size 24 A

, with size 2

erminals in t

he Ethernet

nductors m

nds: i.e. H c

ue.
nductors m

nds: i.e. A c

ue to tighte

irmly.

3. Ethe

4. Cabl

4 AWG / 0.2

G / 0.21 m

AWG / 0.21

e connecti

able directl

st be termi

nnected to

st be termi

nnected to

n.

net port

gland

1 mm2 and a

2

, with a m

mm2, with a

n area as fol

into the RJ

ated to the

, L to L etc.

ated to the

, B to B etc.

maximum t

ximum total

maximum t

ows:

5 port.

ame labele

pplying 0.1

ame labele

applying 0.1

tal length o

length of 5

tal length of

terminals a

ft-lbf / 0.2

terminals a

ft-lbf / 0.2

0

m

m

CAN

LHCOMGND

NOTI

Cable

CAN an
If any k
the dat
If the s
“Maste

nd RS-485 c

AN

COMGNDLH

E

hielding: It

d RS-485 wit

nd of datalo

logger.

stem consis

”

onnection

RS-485

A(-)

B(+)

GND

A(-)

s recommen

h the GND a

ger is conn

of two or m

inout

ded to mou

the receive

cted to an i

re inverters

t the cable

s end.

verter, then

, then only

hielding for

only mount

ount the shi

both the

the shield at

eld at the

User G

ide DLX UL series

L00410625-01

1

6

n

a

m

g

v

t

To d

c

4

-

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p

e

m

r

:

r

t

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t

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n

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n

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t

n

m

r

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m

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e

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b

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Whe
activ
mini

•

Sin

•

Se

on
the

•

•

Be

Table

Con

.2.

um

several inv
tes the ter

izes signal

le inverter

eral inverte

he first inve
inverters be

isconnect t

areful not t

.4: Jumper posi

nection Are

er Positi

rters are co

ination resis

eflections in

The two pi

rs connecte

ter and on t
ween the fir

e pins the j

bend the pi

ion for the term

n for Te

nected, the

ance when

the cables a

s can be ter

: The maste

e last invert

st and last in

mper must

ns when re

nation resistan

ump

mination

umper locat
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d helps to a

inated or di

-follower co
r in the link

erter in the

e pulled up

oving or ins

e

r Position

Resistan

d behind t
erminated (s
void interfer

sconnected.

figuration r
d series. Th

linked series

and placed

alling the ju

Pins

he pin

he pin

e

e CAN / RS-

hort-circuite

nce.

quires term

pins must

.

nly on one

per!

are termin

are discon

85 terminal

d). This

inated pins

e open on

f the pins.

ted.

ected.

1. CA

2. RS

N termination r

485 terminatio

sistance
resistance

42

U

ser Guide DLX UL

series L00410625-

01

u

o

V

o

Ju

O

n

k

t

t

e

t

t

t

t

n

t

t

p

c

e

p

a

a

f

T

h

g

e

e

o

s

d

o

d

s

a

t

r

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r

g

e

o

a

o

e

t

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n

u

a

o

o

c

r

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r

u

s

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c

h

u

o

n

n

e

d

C

t

d

t

t

n

v

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o

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e

d

t

e

n

r

e

e

N

e

4

r

e

e

4.3.7



M


















Chec

.

unting:

- Check tha

P

wiring:

- Check tha

environm

- Check tha

C

nnection:

- Check tha

- Check tha

D

C side:

- Verify that

- Check tha

A

C side:

- Verify that

G

rounded co

- Check tha

switched.

mpers:

- Check tha

correctly

D

isconnects:

- Verify that

disconne
easily acc

vercurrent

- Verify that

correctly,

I

verter cove

- Ensure th

the cover
lbf.

s befor

the bracket

the PV cabl

ntal conditi

the wiring i

the PV con
all connect

the PV open
the DC pola

the AC con

ductors:

the equipm

the jumper
ositioned.

all current-c

ted, and tha

ssible.

rotection:

the overcur

nd capable

r:

t no cables i

irmly to the

Start U

and the inv

s are rated f

ns.

performed

uctors are c

rs and cabl

-circuit volta

rity is correc

uctors on ar

ent groundi

for the gro

rrying cond

the breaker

ent protecti

f being cha

terfere with

housing. Re

p

rter are corr

r the PV cu

ccording to

rrectly torq

glands are c

ge, V

uctors on b

s and DC dis

the sealing

ommended

, doe

OC

.

correctly c

g conducto

nding setup

n on both t

ged witho

ctly mount

rent and for

local and fe

ed to the D

orrectly tigh

not excee

nnected to

s are proper

and for the

th the DC a

onnects are

e DC and th

t touching li

f the invert

tightening t

d and secur

the expecte

eral electric

terminals.
ened and s

600 V

DC

he AC termi

ly sized, and

ermination

d AC side ca

located corr

e AC side ar

e contacts.

r lower cov

rque is 1.0

d.

al regulation

aled.

als.

not fused o

esistance ar

n be
ectly and ar

sized

r, and fasten

m / 0.74 ft-

s.

CAU

User G

Verify t
housin

ide DLX UL series

ION

at the lowe

and dama

L00410625-01

cover is cor

es the electr

ectly tighte

nic compo

ed, so that

ents.

o moisture

nters the

3

S

5.

T

c

m

m

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l

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e

his
start­up or

The
(fro

AC S

•

DC S

TAR

hapter provi

up of the in

commission

inimum vol

the PV syst

de

urn ON th

de

UP

des instructi
erter require
ing the inve

age require

m) and a mi

AC circuit b

ns to ensur

s the presen

ter if one of

ents to sta

imum of 7

eaker(s).

a safe start

e of AC and

he voltage s

t up DLX UL i

.

DC

up of the D

DC voltages

ources is no

nverter serie

X UL inverte
Do not atte
available.

s are 184V

r series. The

pt to start

and 230V

A

DC

5.1.

5.1.1

•

Whe

230

enab

.

Singl

e Inverter

•

Wh

Mult

1. C

N

•

Co
via

one inverter
the
tra

•

Eac

h follower in

Up.

•

urn ON th

nitial

the inverte

and a DC

DC

e the config

Cust

n both the

ugh power,

ple Inverte

necting all i

master inve

sferred to al

DC switch(e

tart

is started fo

power great

ration of ce

mizing

C and the

he installati

s Connecte

verters via t
The Start U
ter the confi

l the other f

erter is aut

s).

the first tim

r than 7 W

tain values

he Inve

C disconnec

n menu is d

he CAN bus

can then be

uration set

llower invert

matically as

e, , with min

, an installa

D

nd operatio

ter Sett

s are turned

isplayed on

nables the
carried out
ings of time,
ers on the n

igned an ID

mum availa

ion menu is

al settings.

ings

ON and the

he LCD scre

onfiguratio

n any inver

date, langua

twork.

umber fro

le voltages
utomaticall

inverter is s

n.

of all invert

er, and if co

ge and grid s

the master

f 184 VAC,
displayed t

pplied with

rs in a plant

figured as

ettings will b

uring Start

o

NOTI

If multi

44

CAN b
single i

E

le inverters

s, and recei

stallation s

are connect
ing sufficien

tup.

d together,
AC and DC

ll inverters

power, befo

ust be con

e Start Up to

U

ser Guide DLX UL

ected to th

benefit fro

series L00410625-

01

u

-

nequ

e

The

U

2

T

a

n

T

e

n

c

u

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m

m

m

e

t

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n

a

w

u

b

o

s

a

n

c

a

e

4

2. RS

•

Co

inv

•

Eac

h inverter m

Gui

dely:

•

485

necting the

ipment. In a

rters will be

he ID nu

-

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parity nu

- Determin

program t
inverter di
Default bi
Default p

RS-485 com

inverters via

RS-485 net
ome follow
st be assign

ber must b

aster invert

ber.

the setup i

hese numbe

splay. Refer

rate: 19200

rity: even

munication i

the RS-485

ork, the 3

s.

ed an ID nu

between 1
r and the fo

the 3rd part

rs in the inv

o section 6.1

s compliant

us enables c

rd

party equip

ber, a bit ra

and 247.

lower invert

equipment

rter by acce

.4.2. Networ

ith Sunsp

ommunicati

ent will act

e number a

rs require a

(e.g. an exte
sing the net
Setup for fu

c Modbus s

n with cert

as a master,

d a parity n

itrate num

rnal data log

ork menu

ther details.

ecification

in 3rd party

hile all

mber

er and a

ger) and

n the

.

5.1.2

The
funct

5.1.

o n

seve

her

Figur

User

.

ser Interface

ion keys.

.1. LCD

vigate in th

items in th

are four dif

5.1: LCD scree

Padlock:

Lines: Nu

with the t

nterfac

on the front

creen

LCD screen
Main Menu,

erent menu

interface

pens up wh

ber of high

p line being

of the invert

he six functi

a further na

evels.

en correct p

ighted lines
the first lev

r contains a

on keys mus

igation thro

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he in

Setup,

he in

ssword is e

indicates th
l (Main Men

LCD screen,

t be used. B

gh differen

Status, Even

ormation and

Commands,

ormation and

tered.

current me
).

three LEDs

selecting o

submenus i

Log, Statisti

values are re

larm Setup:

values can b

u/submenu

nd six

e of the

s possible.

s:

d-only.

modified.

level,

User G

ide DLX UL series

L00410625-01

5

•

To a

2

T

e

o

5

m

O

2

T

u

5

m

The

e

s

d

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n

w

n

w

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t

:

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m

h

c

u

e

r

g

r

t

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p

h

o

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ff

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r

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w

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n

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n

v

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h

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g

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/

l

0

d

n

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isplay when

the screen s

ver is activ

(blank), pre

s any key.

5.1.

her

the l

Table

Sy

N

5.1.

he f

Table

Sy

.2. LEDs

are three L
wer one is g

.1: LEDs.

bol LED

Red

Gree
Yello

Gree

NE

Yello

.3. Func

nction keys

.2: Function ke

bol Func

Ds next to t

reen.

Fun

Malf
mod

&

Caut
at a l

Ope
the
Inve

ion Keys

have the foll

ion

e display sc

tion

nction! Inver

on! Inverter s

imited level

ates; inverter
rid
ter is OFF (Po

owing uses:

een. The up

er in shutdo

ill operates, b

eeds power t

er < 7WDC)

Symbol

er one is re

Actio

n Look f

Alarms

ut Look f

Alarm

o

No act

No act

Functio

, the middle

r alarms in

r warnings in

on

on

is yellow an

tive

Active

•

•

A r

5.1.3

At fir

Up: Sc

Down

Left:

left

selected ite

gistered tou

Start

.

t power-up,

roll up / incre

Scroll down

avigate one

is always

ch of a butt

installa

and with su

se value

decrease val

age or value

ighlighted i
n causes a “

ion

icient AC p

e

yellow.

lick” sound t

wer, the dis

Right: Na
right

Enter: Sel

Cancel: St

previous

o be heard.

lay shows t

igate one pa

ct option / g

op operation

enu item

e Start Insta

e or value

to next level

back to

lation scree

.

46

U

ser Guide DLX UL

series L00410625-

01

u

a

n

e

–

t

r

u

r

h

s

r

t

r

r

n

–

t

r

–

t

r

l

g

a

d

e

g

t

l

4

1. St

rt

Left
Righ
Ente

Cancel
– Ok
– Confirm

2. La

3. Da

guage Sel

te

ction

Defa

– Call up the

Ente
Up or

Down – Navi

find t

he preferred l

Spani

sh; etc…

Ente

– Confirm

– Next

Righ
Ente

– Confirm

DD.M

M.YYYY

Ente

– Call up the

ncrease pres

Up – I

– Decrease p

Dow
Left

Select previo

Righ

– Select next

Ente

– Confirm

Back

Left
Righ

– Next

Ente

– Confirm

lt – English

ist of langua

ate through

nguage; Eng

ate

nt digit
resent digit
us digit

digit

es

he list to

ish;

User G

ide DLX UL series

L00410625-01

7

4. Ti

m

t

4

w

m

C

T

m

a

i

e

u

u

e

u

e

r

I

n

–

t

r

–

t

r

–

n

–

–

B

–

–

S

d

e

i

n

e

I

t

o

f

0

r

f

e

HH.M

M (24 H)

Ente

– Call up the

Up –

ncrease pres

Dow

– Decrease p

Left

Select previo

Righ

– Select next

Ente

– Confirm

Back

Left
Righ

– Next

Ente

– Confirm

ate

nt digit
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58

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Indicates whet
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he DNS IP ad

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Measurement
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set of bits with

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Several inverte
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parameters

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6.1.

Inver

proc

Mod
Seri

DLX
DLX

GUI
GUI
GUI
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SW1

Part No.

SW1

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Part No.

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l

l Number

art No.
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ith the inverter

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6.1.

Plant
Own

Cust
Site
Inst
Serv
Res
Unit
Mes

6.1.

The
chan
acce
cont

Grid
Grid
Grid
Grid

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Setup displa

password.

mer Name

llation Date

ce Date
onsible
Name

age

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rid Setup dis

ed within

sible by usin

cting Danfo

code
nom voltage
nom frequenc

Setup

s useful inf

etup

lays the gri

hours after

g the Install

s.

rmation abo

he customer
The site name
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May be used f
Field for keepi

his text string
An extra mess

settings ba
he installati
password,

AC grid confi
Additional in
Nominal volt
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ut the PV pl

owner name

r setting the in
r setting the m

g a note of the
is displayed in
ge field for add

ed on the s

n using the

hich will o

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ormation abo

ge of the grid

uency of the gr

nt, which ca

tall date

st recent servi
company/pers
he master unit

itional notes

lected coun
Owner pass
ly be availa

elta Split-phas

t the valid grid

n site

id on site

be change

e date

n responsible

s list of connec

ry. The setti

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le to the ins

, Stinger etc.

protection stan

using the

or service

ed inverters

gs can be

ter it is only

aller by

dard

60

U

ser Guide DLX UL

series L00410625-

01

u

T

y

l

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he s

Insta

ler password

1. Vo

ltage

208

Table

.4: Adjustable v

Tri

Limits

Low
Low
Hig
Hig

240

Table

.5: Adjustable v

Tri

Limits

Low
Low
Hig
Hig

stem install

AC Delta: N

limit
and fast limi

limit
and fast lim

Delta: N

AC

limit
and fast limi

limit
and fast lim

rip Limits

r may chan

is needed t

o Neutral, 1

ltage trip limits

Trip

t

10

Neutral, 12

ltage trip limits

Trip

t

12

e the grid s

change the

0 WYE, Corn

for 208 V

Voltage

in

.5 V

AC

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AC

2

8 V

AC

8 V

2

AC

Split-phase,

for 240 V

Voltage

in

.7 V

AC

.5 V

AC

0 V

AC

0 V

2

AC

AC

2
2

120 Stinger,

AC

2
2

ttings accor

e settings.

r Grounded

Max

08 V

AC

08 V

AC

6.3 V

AC

7.1 V

AC

Max

40 V

AC

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AC

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AC

5.5 V

AC

ding to elect

T

rip Time

Min

50 ms

50 ms

50 ms

50 ms

Corner Gro

T

rip Time

Min

50 ms

50 ms

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rical regulati

Max

50 ms
20 ms
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nded

Max

50 ms
20 ms
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ons. The

2. Fr

Table

Tri

Low
Hig

ral Grid Setu

Gene

Gene

Grid

code

Desc

ription

Grid

nom voltage

Grid

nom frequenc

Grid

configuration

Fee

ing phase
Volt
Volt

User G

quency

.6: Adjustable fr

Limits

limit

limit

al Grid Setu

ge limit min
ge limit max

ide DLX UL series

quency trip lim

Trip

displays gri

L00410625-01

ts

Frequency

in

35 Hz

60

. 0 Hz 6

parameter

Grid code of in
Name of the gr
Nominal volta
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he phase the
Lower disconn
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0.0 Hz

0.45 Hz

related to t

tallation

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e of the grid o

ncy of the grid
ion of the site:
nverter is conn

ction limit of t
ction limit of t

T

rip Time

Min

50 ms
50 ms

e selected g

andard

site
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cted to:
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e grid voltage

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80 ms
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rid.

hase, Stinger

on site

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tc

6

1

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a

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cy on site

6.1.

•

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use
ins

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the Main

– Confirm

r 5 hours of

allers and gr
question “C

ging the

enu: Setup

feeding in p

he grid cod

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ange grid s

rid Sett

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wer to the

settings. T

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ngs

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rid after ins

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acting Danf

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allation the
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ss.

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: Corner gr., 2

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– Confirm

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tained for s

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t the respecti

utral, 240 D:

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ord must

stem

ed

e grid

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e

•

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r the grid se

newly confi

the

ttings are ch

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62

nged, the s

ttings.

reen will ret

urn to the G

id Setup scre

U

ser Guide DLX UL

en, showing

series L00410625-

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ands

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ter Com

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ands

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data in the i

Up or
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lete events

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administrator
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enu/confirm

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of the inverter

default. User is

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verter

set to admin

o

6.1.

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verters

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ds

ility to del

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Rebuilds the pl
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several minute

ion of an e

s and opera
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minutes averag

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ant energy log

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tion mode t

ved in the

nd summarize

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ased on the e

ng in the syste

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one or mor

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values of the

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the plant

ergy logs of th

. This process

er can send i

receivers.

of the mast

lant

inverters

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nformation

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6

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enu/confirm

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6.1.

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tification Set

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server

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st companie

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dure

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n 6.1.6.1. No

menu Alar

tification Set

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Us

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ication time
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val

production o
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alarm on ema
production o
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E

addresses re

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UI revisions

ers.

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to be speci
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ation. If the

ss has been

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email 1
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lated to the i

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s

or notificati

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nverter and

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energy produc
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6.1.

Porta

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y data is upl

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6.10: Events in

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6.1.8

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6.1.

Inver

mon

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tics displays

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6.11: Submen

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er displays a

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tics

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ter

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daily, mont
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n

h

:

r

d

s

i

e

n

L

e

0

b

.

7.

7.1.

his
chec
the i
probl

em, please c

If the



If all

hese items a

ROU

hapter cont

ing the inst
formation i

heck

inverter doe

at both the
at the irradi
at the oper
at there are
at all conne
at the valu

LES

ins useful in

llation is car

7.2. Table of
ntact the s

ist by

s not feed p

AC and DC d

tion is suffi

tion mode
no warning

ction points

s of the PV v

re OK, and t

OOT

ormation if

ied out corr
Events for p
stem install

ailure

wer to the g

isconnect ci

ient to gene
f the LEDs is
or alarms in

in the syste

ltage, curre

ere is still n

NG

he inverter

ctly, and th
ssible soluti
r.

rid, try to sol

cuit breaker

rate power (

normal (Ref

the display (

are properl

t and powe

power fed t

alfunction

display inf

ns. If this d

ve the probl

s)/disconne

7 W).

r to 5.1.2.2.

Refer to 7.2.

tightened.

r match tho

the grid, c

during ope
rmation, an

es not help

m by check

t(s) are ON.

EDs).

able of Even

e in the disp

ntact your d

ation. Start

then check
olve the

ing:

ts).

lay.

istributor.

y

7.2.

he i

scree

n. Detailed i

Refer

Mes

ages that c

W =
A =

larm (Red LE

The
desc

able o

verter auto

to 6.3.4. Eve

arning: inv

isplay Mes

iption as di

Event

atically ide
formation a
t Log.

n appear in

rter continu

D)

age code n

played in t

tifies opera

out warnin

the display

s to operat

mber (E01,
e Event Lo

ional issues

s and alarm

at highest

E02, etc..) i

of the web

nd displays
can be fou

ossible capa

the code s

server view

the messag

d in the Eve

city (Yellow

own in the

s on the

t Log menu

ED)

vent

76

U

ser Guide DLX UL

series L00410625-

01

u

7

p

e

2

r

p

f

h

7

8

u

o

e

/

a

E

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t

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e

Table

Dis

Pan

.1: Description

lay Messag

l fault (W/A –

f messages app

E01)

aring in the dis

Descriptio

PV module fa

lay during inve

lure

ter failure

Action

- Contact

the supplier*

Inpu

t circuit break

– E0

)

Inve

ter failure (W

Out

ut circuit bre

(A –

E04)

Grid

fault (W/A –

ault (W/A – E

GUI

Hig

voltage on in

– E0

)

er open (A

A – E03)

ker open

05)

6)

put side (A

DC switch is

Inverter failur

AC circuit bre

No detection
not able to s
with the grid
setting the gr

Display is not

DC voltage t
V

is exceed

DC

pen

e

aker(s) is ope

of the grid,
nchronize
or fault when
id-settings

responding

reshold of 60

d

-

-

If alread

- Contact

-

-

If alread

- Verify if

and op

- Measur

present

-

Check t
that the

-

Check t
have be

Setup>

-

second
Wait 30
on
If still u

-

the sup

-

Contact

urn on

urn on

urn off

the DC switc

y on, contact

the supplier

the AC circuit

y on, contact

the AC circuit

rational

that the grid

at the AC ter

at the DC swi

DC power is

at the countr

en successfull

rid Setup

the AC side.
and then tur

seconds for t

responsive, t

lier

the supplier

*
he supplier

breaker(s)*

he supplier

breaker is on

voltage is

inals

tch is on and

7W

settings
set in

ait for 3

on again.

e GUI to turn

en contact

Low

voltage on in

)

– E0

Low

PV isolation r

E09)

(W –

re on DC side

Fail
E10)

ut side (A

sistance

(W/A –

DC voltage is
operate the i

PV isolation r
below the pe

Inverter failur
side

too low to

verter

sistance is

mitted level

e on the DC

- Fault is

PV volta

-

If the in
during
supplie

-

he gro

incorre

- Check t

setup (4
System

- If the ju

contact

- Failure

are also

-

If the in
off the
side. W
on the

- If the fa

supplie

-

leared auto

ge exceeds 2

erter remain
aylight, cont

nding setup

tly

e jumper for

.3.4.7 Jumper

rounding Set

per is correc

the supplier

n the DC sid

shown

erter is in Sh

C side and th
it for 30 seco
C side and th

lt persists, co

atically when

0V
in this fault
ct the

s configured

he groundin

osition for

p)

ly positioned

. Other W/A

tdown, turn

n the DC

ds, then turn

n the DC sid

ntact the

,

User G

ide DLX UL series

L00410625-01

7

7

Dis

p

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p

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lay Messag

Fail

re on AC side

E11)

Hig

inverter tem

(W/

– E12)

(W/A –

erature

Descriptio

Inverter failur
side

Maximum pe
internal inver
temperature

e on the AC

missible

er

s exceeded

Action

- Failure

are also
If the in

-

off the
side. W
on the

- If the fa

supplie

- Check t

temper
specific
Data)

- Check if

the min
complia
Guide a
from dir

-

Clean v

Ventilat

n the AC side

shown

erter is in Sh

C side and th
it for 30 seco
C side and th

lt persists, co

at the ambie
ture is within
tion (Refer to

the ventilatio
mum distanc

nt with those

d the inverte

ect sunlight

ntilation (Ref

on)

. Other W/A

tdown, turn

n the DC

ds, then turn

n the DC sid

ntact the

t

the

10 Technical

n is sufficient,

s are

in this User

is shielded

r to 8.2.8

Low

inverter

erature(W/A

tem

Curr

nt / power li

(W/

– E14)

Co

munication f

E15)

ailure (W/A –

Fan

Fus

fault (A – E1

– E13)

itation

ilure (A –

E16)

)

Low internal i
temperature

PV power exc
rating

Internal com
failure

Internal air di
missing

One or more
blown

nverter

eeds inverter

unication

tribution is

C fuses are

- Contact

-

he inv
when t
permiss

- Check if

the min
complia
Guide a
from dir

-

Clean v

Ventilat

- If the in

off the
side. W
on the

- If the fa

supplie

- Contact

replace

- Contact

replace

the supplier

rter will try t
e temperatur
ble range ag
the ventilatio
mum distanc

nt with those

d the inverte

ect sunlight

ntilation (Ref

on)

erter is in Sh

C side and th
it for 30 seco
C side and th

lt persists, co

the supplier f

ent fan

the distribut

ent fuses

start up agai

is within the

in

n is sufficient,

s are

in this User

is shielded

r to 8.2.8

tdown, turn

n the DC

ds, then turn

n the DC sid

ntact the

r a

r for

Acti

e power limit

– E1

)

Rea

tive power

com

pensation (W

78

tion (W/A

A – E19)

- Contact

- Contact

-

the supplier*

the supplier*

U

ser Guide DLX UL

series L00410625-

01

u

p

o

u

h

h

h

6

p

7

e

u

A

A

n

u

e

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v

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Dis

Micr

E20)

lay Messag

processor fa

lt (W/A –

Descriptio

Action

- If the in

off the
side. W
on the

- If the fa

supplie

erter is in Sh

C side and th
it for 30 seco
C side and th

lt persists, co

tdown, turn

n the DC

ds, then turn

n the DC sid

ntact the

Gro

nd current tri

Hig

AC voltage (

Low

AC voltage (

frequency o

Hig
side

(W/A – E24)

(A – E21)

– E22)

– E23)

output

oo high AC
inverter stop
power

oo low AC v
inverter stop
power

he frequenc
voltage is ab
limit

oltage, the

feeding

ltage, the

feeding

of the grid

ve the upper

- Contact

-

he inv
voltage
range

-

Check t
been su
Setup

-

If the fai
supplie

-

he inv
voltage
range

-

Check t
been su
Setup
If the fai

-

supplie

-

he inv
the freq
permiss

- Check t

been su
Setup

-

If the fai
installer

the supplier*

rter will resta

is within the

at the grid se
cessfully set

lure persists,

rter will resta

is within the

at the grid se
cessfully set

lure persists,

rter tries to r

uency is withi

ble range

at the grid se
cessfully set

lure persists,

t when the

ermissible

ttings have

n Setup > Gri

ontact the

t when the

ermissible

ttings have

n Setup > Gri

ontact the

start when

the

ttings have

n Setup > Gri

ontact syste

Low

frequency on

side

(W/A – E25)

output DC c

Hig

– E2

)

Out

ut current im

– E2

)

User G

ide DLX UL series

output

rrent (W/A

alance (W

L00410625-01

he frequenc
voltage is bel
limit

oo high pro
current in th

Imbalance in
current betw
(3 phase only

of the grid

w the lower

ortion of DC

grid feeding

he output
en the phase

-

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-

-

- If the fa

-

s

he inv
the freq
permiss

been su
Setup
If the fai
supplie

he inv
the faul

supplie

Contact

rter tries to r

uency is withi

ble range

at the grid se
cessfully set

lure persists,

rter tries to r

is cleared

lt still occurs,

the supplier*

start when

the

ttings have

n Setup > Gri

ontact the

start when

contact the

7

9

Dis

p

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n

(

u

e

n

o

T

o

.

e

o

0

lay Messag

Grid

fault, still run

E28)

ing (W –

Descriptio

Fault ride-thr

ugh

Action

- Contact

the supplier*

VDR

* Res

fault DC side

rved for fut

W – E29)

re use

he varistors

are damaged

n the DC sid

-

Contact

the supplier f

r new parts

80

U

ser Guide DLX UL

series L00410625-

01

u

M

T

c

v

D

S

y

p

i

i

R

D

t

T

a

r

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p

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p

t

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8.

8.1.

his
over
the

AIN

hapter expl
iew of impo

LX UL invert

witch-

ENA

ins how to s
tant regular

rs. Finally, it

OFF

CE

itch OFF a

maintenanc

is explained

d discharge

procedure

how to rem

the inverter

to ensure tr

ve and retu

afely. It also

uble-free o

n the invert

provides an

eration of

rs.

Alwa
or re

AC-s

•

DC-s

•

•

•

s turn OFF a

airs:

DAN

Never
side be

de

urn OFF th

de

urn OFF th
Disconnect
Let the DC c

WAR

Lethal
charge
service

nd disconne

ER

erform wor

ause of dea

AC circuit

DC switch.

he connect

apacitor ban

ING

oltages ma

capacitor b

or maintena

ct the invert

on the inve

ly voltages

reaker(s).

rs.

k discharge.

be present i
ank. It must

ce work on

r in the foll

ter without

resent at th

nside the in

e discharge

the inverter.

wing order

isconnectin

e terminals.

erter after s

d for 1 hour

rior to main

g both the

itch OFF, b

before perf

enance wor

C and AC

cause of a

rming

k

8.2.

The
Perfo
inver

User G

egula

LX UL inver

rming regul

er.

ide DLX UL series

NOTI

Only p
Mainte
perfor
warran

Syste

ers are desig

r maintenan

E

rmit qualifie

ance work i
ed by quali

y.

L00410625-01

Inspe

ned and ma
ce will ensur

d persons to

volving re

ied persons

tions

ufactured t

high effici

perform the

oval of the i

nly, due to

operate tro

ncy and a lo

work inside

verter’s lo

he requirem

uble-free for

ger service

the inverter!

er cover mu
ents of the

several year

life for the

t be

roduct

.

8

1

t

a

u

w

The

C

a

T

u

m

e

n

r

h

o

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c

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8.2.1

Main

8.2.2

Regu
Repl

8.2.3

Regu
not d

8.2.4

Freq
circui

•

Al
rep

•

Mod

.

ain the PV

Cabl

.

larly check al

ce frayed co

Elect

.

larly check t

eteriorated

Fuse

.

ently blown

t or ground

ays determi

lacement/re

replacemen

les

odules as re

s

l cables insi

ductors im

ical Co

at the termi
r corroded.

/Circuit

fuses or trip

ault.

e the reaso

etting.

resetting

t

ommende

e and outsid

ediately!

nection

als and plu
o not forge

Breaker

ed circuit b

for blown f

ust be perf

from the m

e for signs o

s are firmly

the combin

eakers are a

ses/tripped

rmed by qu

nufacturer.

thermal an

ightened, a

er box!

clear warnin

circuit brea

lified perso

mechanica

d that the i

g sign of ov

ers prior to

s only!

damage.

sulation is

rload, short

8.2.5

If a D

Table

Repl

•

ur

DC F

.

fuse blows

of Events).

DAN

The ph
produc
holder
expose

cement Pr

n OFF both t

DAN

Always
cover d

ses / Gr

the followi

ER

tovoltaic m

hazardous

after switch

to light!

cedure

e AC circuit

ER

disconnect

ue to the ris

und Fu

g message

dules (pan

voltages, wh

OFF. Do not

breaker(s) a

oth the DC

of shock ha

e

ill appear in

ls) deliver p
ich is still pr

replace the

d DC switc

nd AC sides

ards.

the display:

wer when e
sent at the t

C fuses wh

.

before open

“Fuse fault” (

posed to lig

erminal bloc

n the PV m

ing the inve

efer to 7.2.

ht and

ks and fuse

dules are

ter’s lower

82

U

ser Guide DLX UL

series L00410625-

01

u

m

e

w

a

e

o

tmea

h

w

k

e

t• Turn

T

e

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Fuses: Meas

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rev

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Gr

gro

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vol

•

If t

•

Al

ove the inv

ck that the t

ays check th

surable cur
rsed polarit

und Fuse:

age measur

surements

e voltage an

ays exchang

rter’s lower

rminals are

e cause of th

ure the volt

ent do not r

.
easure one

l block, and t

ments shou

re different,
d current m
e the fuses

over (Refer
voltage free.
e defective f

ge and curr

move the f

tring at a ti
hen the neg
ld be equal t

there is a gr

asurements
ith the sam

o 2.4.5. Inve

se prior to r
nt: If the vol
se holder. R

e: The volta

tive termin

the open c

und fault. R

are correct,

type and ra

ter Enclosur

eplacement.

age is close

check wirin

ge between

l and the gr

ircuit voltag

peat for ea

emove and

ing.

).

o or 0 VDC o

for dead sh

the positive

und termin

(V

) divid

OC

h string.
eplace the

there is a
orts or

nd the

l block. Bot

d by 2. If the

efect fuse(s)

•

Ma
fus

•

Fas

8.2.6

o pr

oper

8.2.7

The i
ever

8.2.8

he

com

his i

e sure that t
holder.

en the inver

on the AC

DC D

.

vent weldi

ted at least

Inver

.

terior of th

3 – 4 years.

Venti

.

eatsink on t

onents and

accomplish

Figure 8.

he replaced

er lower co

ircuit break

sconne

g of the con

nce every 1

er

inverter mu

lation

e backside

ust be clea

ed by using

: Dimensions of

use(s) is co

er firmly (Re
r(s) and the

t Switc

acts, thereb

months, pr

t be checke

f the invert

n to ensure

ne of the fo

the DC fuses/gr

pletely inse

er to 2.4.5. I

C switch.

extending

ferably at n

by the syst

r conducts h
ufficient co
llowing:

und fuse

ted in the fu

verter Enclo

ervice life, t

ght or when

m installer

eat away fro

ling, thereb

se holder, a

ure).

e DC switch

the AC is O

or humidity

the electr

preventing

d insert the

(es) must be

F.

nd dust

nic

yield losses.

User G

ide DLX UL series

L00410625-01

8

3

T

a

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2

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2

•

Va

uum cleaner

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pressed air

Figur

8.2: Heatsink c

eaning

8.2.9

he f
conv
and

•

A

Eve

•

If t
cer
ag

Fan

.

n circulates
rsion capaci

ust be perf

essage is sh

ts.
e fan fails, t
ain tempera

inst overhea

the air insid
ty. The repla

rmed by Da

wn in the di

e inverter c

ture thresho

ting.

the inverte

ement of th

foss autho

Figure 8.3: P

splay when

ntinues to f
d, at which

, which distr
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ized servic

sition of the fan

he fan need

ed the maxi

oint it starts

butes heat a

s removal o

persons o

replaceme

um amoun

to reduce p

nd thereby

the inverter

ly!

t. Refer to 7.

t of power a

wer to prot

aintains th

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ailable until

ct itself

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8.2.1

Varis
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ctancy, and

refore need

egrade and

regular insp

lose their pr

ections (eve

tective fun

y six month

U

ser Guide DLX UL

tion when
).

series L00410625-

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8.2.

•

A

of

•

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•

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essage is sh

vents.

lace the da

B0570
two varisto

partment a

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needs repla

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inverter low

nt.

r to 7.2. Tabl

umber

r

8.2.

•

No
the

•

Re

•

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User G

0.2. AC

arnings ar

need to be

lace the da

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three varist

partment a

e the positi

ide DLX UL series

ide

given regar
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aged varist

rs on the A
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ns of the var

L00410625-01

Figure 8.4: Vari

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side are loc

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istors if they

tors on the DC s

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t once a yea

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varistors on

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aristors are da

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igure 8.6: Chec

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VDR (4)

DR(5)

terminal a

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tors

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aged

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the service
service tool

cedure

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86

in the pack
s a fork, and

ging with t

can open u

e new varis
all terminal

ors ordered

clamps sim

U

ser Guide DLX UL

rom Danfos

ltaneously.

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n of the var

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ristor(s).

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AC terminal

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embling th

over must b

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performed

removal of

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inverter.

acket.

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he lower co

e lower cov

persons

er! The

r poses a

User G

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L00410625-01

8

7

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ter and the

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and on the

tringbox (4)

to 4.1.2

tringbox (H

.

Figur

8.9: Procedure

for replacing th

88

inverter

U

ser Guide DLX UL

series L00410625-

01

u

l

h

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hnee

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turn to Dan

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User G

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L00410625-01

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9

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The

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ns that may

d

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he inverter.

s only valid

, vandalism,

apply to yo

.

90

U

ser Guide DLX UL

series L00410625-

01

u

T

I

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p

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DAT

10.1.

|S|
P
V

ac,r

V

ac, min

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acmax

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fr
f

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dc,r

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ac

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AC

Rated ap
Rated act
Rated ou

Max out
AC curre
Power Fa
Night-ti
Mains fre
Grid freq
Inrush cu
Max out
current
Measure
DC
Nominal
Max reco
Normal o

MPP volt

MPP effic
Max. DC

urn on

urn off
Max inpu
Max. inp
Min. on g
Efficienc
Maximu
CEC effici
EU efficie
Other
Dimensi
Mountin
Weight
Sealing g
Acoustic
Operatio
Nom. te
Storage t
Relative
Protectio
power
Overvolt
Overvolt
Max utilit
Cable ac
Ethernet
RS-485
CAN
PV conne
AC/grid c
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Ground f

datas

er

arent power

ive power

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e range (P-N. P-P

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t distortion (THD

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oltage
oltage
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perature range

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25 W

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6.8 %

6.3 %

720 x 35

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13

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3750 W

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97.2 %

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3 °F ....+104 °F

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4400 W

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4600 W
5750 W

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25.0 A

97.3 %

97.0 %

96.9 %

User G

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L00410625-01

9

1

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tion

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ing, integral D

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ings

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us

92

U

ser Guide DLX UL

series L00410625-

01

u

F

1

r

r

r

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10.2.

Table

VALUE

Vac Ove
high trip
Vac Ove
high trip
Vac Ove
low trip l
Vac Ove
low trip
Vac Und
high trip
Vac Und
high trip
Vac Und
low trip l
Vac Und
low trip
Vac Ove
trip level
Vac Ove
trip time
Vac Und
trip level
Vac Und
trip time

Table

VALUE

Vac Ove
high trip
Vac Ove
high trip
Vac Ove
low trip l
Vac Ove
low trip
Vac Und
high trip
Vac Und
high trip
Vac Und
low trip l
Vac Und
low trip
Vac Ove
trip level
Vac Ove
trip time
Vac Und
trip level
Vac Und
trip time

ield A

0.1: 208Vac Tri

voltage

level

voltage

time

voltage

vel
voltage
ime

rvoltage

level

rvoltage

time

rvoltage

vel

rvoltage
ime
frequency

frequency

r frequency

r frequency

0.2: 240Vac Tri

voltage

level

voltage

time

voltage

vel
voltage
ime

rvoltage

level

rvoltage

time

rvoltage

vel

rvoltage
ime
frequency

frequency

r frequency

r frequency

justab

Details

DEFAU

Details

DEFAU

le Trip

T SETTING

2

7.1 V

0 ms

2

6.3 V

9

0 ms

5.5 V

1

.95 s

1

6.5 V

1

0 ms

.45 Hz

0 ms

.35 Hz

0 ms

T SETTING

2

5.5 V

0 ms

1.5 V

9

0 ms

2

3.7 V

1

.95 s

1

2.5 V

0 ms

.45 Hz

0 ms

.35 Hz

0 ms

evels

MIN. LEV

208.0 V

50 ms

208.0 V

50 ms

185.5 V

50 ms

106.5 V

50 ms

60.00 H

50 ms

59.35 H

50 ms

MIN. LEV

240.0 V

50 ms

240.0 V

50 ms

213.7 V

50 ms

122.5 V

50 ms

60.00 H

50 ms

59.35 H

50 ms

L MA

6

6

L MA

6

6

. LEVEL

2

7.1 V

1

20 ms

2

26.3 V

9

50 ms

2

8.0 V

.95 s

2

8.0 V

1

20 ms

.45 Hz

0 ms

.00 Hz

0 ms

. LEVEL

2

5.5 V

1

20 ms

2

1.5 V

9

50 ms

2

0.0 V

.95 s

0.0 V

1

20 ms

.45 Hz

0 ms

.00 Hz

0 ms

ACCURACY

±2.5V

±30 ms

±2.5V

±30 ms

±2.5V

±30 ms

±2.5V

±30 ms

±0.1%

±30 ms

±0.1%

±30 ms

ACCURACY

±2.5V

±30 ms

±2.5V

±30 ms

±2.5V

±30 ms

±2.5V

±30 ms

±0.1%

±30 ms

±0.1%

±30 ms

User G

ide DLX UL series

L00410625-01

9

3

CERTIFICATE OF COMPLIANCE

Certificate Number

20121008-E357295

Report Reference

E357295-20121004

Issue Date

2012-OCTOBER-08

William R. Carney, Director, North American Certification Programs
UL LLC
Any information and documentation involving UL Mark services are provided on behalf of UL LLC (UL) or any authorized licensee of UL. For questions, please

contact a local UL Customer Service Representative at www.ul.com/contactus

Issued to:

DANFOSS L L C

4401 N BELL SCHOOL RD
LOVES PARK, IL 61111 USA

This is to certify that

representative samples of

STATIC INVERTERS, CONVERTERS AND
ACCESSORIES FOR USE IN INDEPENDENT POWER
SYSTEMS

DLX 2.0 UL, DLX 2.9 UL, DLX 3.8 UL, DLX 4.4 UL

Have been investigated by UL in accordance with the
Standard(s) indicated on this Certificate.

Standard(s) for Safety:

UL 1741, Inverters, Converters, Controllers and
Interconnection System Equipment for Use with Distributed
Energy Resources.

CSA-C22.2 No. 107.1, General Use Power Supplies.

Additional Information:

See the UL Online Certifications Directory at

www.ul.com/database for additional information

Only those products bearing the UL Listing Mark for the US and Canada should be considered as
being covered by UL's Listing and Follow-Up Service meeting the appropriate requirements for US
and Canada.

The UL Listing Mark for the US and Canada generally includes: the UL in a circle symbol with “C” and

“US” identifiers: the word “LISTED”; a control number (may be alphanumeric) assigned by UL;

and the product category name (product identifier) as indicated in the appropriate UL Directory.
Look for the UL Listing Mark on the product.

Page 1 of 1

Danfoss can accept no responsibility for possible 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 alterations can be made without subsequential changes being necessary in specifications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Rev. date 2012-07-02 Lit. No. L00410625-01_22

Danfoss Solar Inverters

4401 N. Bell School Rd.
Loves Park, IL 61111
United States
Tel: [phone]
Fax: [phone]
www.danfoss.us/solar

Danfoss Solar Inverters A/S

Ulsnaes 1
DK-6300 Graasten
Denmark
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
www.danfoss.com/solar