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1098 Washington Crossing RoadWashington Crossing, PA 18977 USA
www.morningstarcorp.com
Installation and Operation Manual
SUNSAVER MPPT TMWITH TRAKSTARTM MPPT TECHNOLOGY
MAXIMUM POWER POINT TRACKING
Model: SS-MPPT-15L
M
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N3
SunS
aver
MPP
T D
imen
sion
s
Sys
tem
Vol
tage
12 V
olts
/ 24
Vol
tsR
ated
Bat
tery
Cur
rent
15 A
mps
Rat
ed L
oad
Cur
rent
15 A
mps
Max
. Inp
ut V
olta
ge**
75 V
olts
Nom
inal
Inpu
t Pow
er
12 V
olt S
yste
m
20
0 W
atts
24
Vol
t Sys
tem
400
Wat
ts
** A
rray
vol
tage
sho
uld
neve
r exc
eed
max
imum
inpu
t vol
tage
. R
efer
to th
e so
lar m
odul
e do
cum
enta
tion
to d
eter
min
e th
e hi
gh-
est e
xpec
ted
arra
y V oc
tem
pera
ture
for t
he s
yste
m lo
catio
n.
Con
tent
s
34
2.0
Gen
eral
Info
rmat
ion
5
2.1
Ove
rvie
w
52.
3 O
ptio
nal A
cces
sorie
s
8
3.0
Inst
alla
tion
Inst
ruct
ions
9
3.1
Gen
eral
Inst
alla
tion
Not
es
9
3.3
Mou
ntin
g
13
3.4
Wiri
ng
154.
0 O
pera
tion
204.
1 LE
D In
dica
tions
204.
2 Tr
akS
tarTM
MP
PT
Tech
nolo
gy
22
4.3
Bat
tery
Cha
rgin
g In
form
atio
n
25
4.4
Load
Con
trol I
nfor
mat
ion
274.
5 P
rote
ctio
ns
29
4.6
Insp
ectio
n an
d M
aint
enan
ce
314.
7 P
rogr
amm
ing
Cus
tom
Set
poin
ts
32
5.0
Trou
bles
hoot
ing
33
5.1
Err
or In
dica
tions
335.
2 C
omm
on P
robl
ems
34
App
endi
x A
- Wire
Cha
rts
41
1.0
IMP
OR
TAN
T S
AFE
TY IN
FOR
MAT
ION
MO
RN
ING
STA
R C
OR
PO
RAT
ION
5
2.0
Save
The
se In
stru
ctio
nsTh
is m
anua
l con
tain
s im
porta
nt s
afet
y, in
stal
latio
n an
d op
erat
ing
inst
ruct
ions
for t
he S
unS
aver
MP
PT
sola
r con
trolle
r.
The
follo
win
g sy
mbo
ls a
re u
sed
thro
ugho
ut th
is m
anua
l to
indi
cate
pot
entia
lly d
ange
rous
con
ditio
ns o
r mar
k im
porta
nt s
afet
y in
stru
ctio
ns.
WA
RN
ING
: In
dica
tes
a po
tent
ially
dan
gero
us
cond
ition
. U
se e
xtre
me
caut
ion
whe
n pe
rform
ing
this
task
.
!C
AU
TIO
N:
Indi
cate
s a
criti
cal p
roce
dure
for
safe
and
pro
per o
pera
tion
of th
e co
ntro
ller.
NO
TE:
Indi
cate
s a
proc
edur
e or
func
tion
that
is
impo
rtant
for t
he s
afe
and
prop
er o
pera
tion
of
the
cont
rolle
r.
Rea
d al
l of t
he in
stru
ctio
ns a
nd c
autio
ns in
the
man
ual
befo
re b
egin
ning
inst
alla
tion.
Ther
e ar
e no
use
r ser
vice
able
par
ts in
side
the
Sun
Sav
er M
PP
T. D
o no
t dis
asse
mbl
e or
atte
mpt
to
repa
ir th
e co
ntro
ller.
Dis
conn
ect a
ll so
urce
s of
pow
er to
the
cont
rolle
r bef
ore
inst
allin
g or
adj
ustin
g th
e S
unS
aver
MP
PT.
Th
ere
are
no fu
ses
or d
isco
nnec
ts in
side
the
Sun
Sav
er
MP
PT.
Inst
all e
xter
nal f
uses
/bre
aker
s as
requ
ired.
Do
not a
llow
wat
er to
ent
er th
e co
ntro
ller.
exce
ssiv
e he
atin
g fro
m a
loos
e co
nnec
tion.
2.0
Gen
eral
Info
rmat
ion
2.1
Ove
rvie
wTh
ank
you
for s
elec
ting
the
Sun
Sav
er M
PP
T ch
arge
co
ntro
ller w
ith T
rakS
tar T
echn
olog
yTM. T
he S
unS
aver
MP
PT
(SS
-MP
PT)
is a
n ad
vanc
ed m
axim
um p
ower
poi
nt tr
acki
ng
sola
r bat
tery
cha
rger
and
load
con
trolle
r for
sta
nd-a
lone
PV
sy
stem
s. T
he c
ontro
ller f
eatu
res
a sm
art t
rack
ing
algo
rithm
th
at m
axim
izes
the
ener
gy fr
om th
e so
lar m
odul
e(s)
and
al
so p
rovi
des
load
con
trol t
o pr
even
t ove
r-di
scha
rge
of th
e ba
ttery
.
The
SS
-MP
PT
batte
ry c
harg
ing
proc
ess
has
been
op
timiz
ed fo
r lon
g ba
ttery
life
and
impr
oved
sys
tem
pe
rform
ance
. Sel
f-dia
gnos
tics
and
elec
troni
c er
ror p
rote
ctio
n pr
even
t dam
age
whe
n in
stal
latio
n m
ista
kes
or s
yste
m fa
ults
oc
cur.
The
cont
rolle
r als
o fe
atur
es fo
ur (4
) set
tings
sw
itche
s fo
r adj
usta
bilit
y, a
met
er p
ort,
and
term
inal
s fo
r rem
ote
batte
ry te
mpe
ratu
re m
easu
rem
ent (
optio
nal).
Usi
ng M
SVi
ewTM
PC
sof
twar
e, th
e S
S-M
PP
T ca
n be
pr
ogra
mm
ed w
ith c
usto
m s
ettin
gs to
func
tion
as a
ligh
ting
inte
rval
s th
roug
hout
the
day
and
nigh
t. S
ee s
ectio
n 4.
7 fo
r m
ore
info
rmat
ion.
use,
ple
ase
take
the
time
to re
ad th
is o
pera
tor’s
man
ual a
nd
beco
me
fam
iliar
with
the
cont
rolle
r. Th
is w
ill h
elp
you
mak
e fu
ll us
e of
the
man
y ad
vant
ages
the
SS
-MP
PT
can
prov
ide
for y
our P
V s
yste
m.
2.0
GE
NE
RA
L IN
FOR
MAT
ION
MO
RN
ING
STA
R C
OR
PO
RAT
ION
7
2.02.
2 Fe
atur
esTh
e fe
atur
es o
f the
Sun
Sav
er M
PP
T ar
e sh
own
in F
igur
e 1
belo
w. A
n ex
plan
atio
n of
eac
h fe
atur
e is
pro
vide
d.
Figu
re 1
. Sun
Sav
er M
PP
T f
eatu
res.
1 - S
tatu
s LE
DA
n LE
D in
dica
tor t
hat s
how
s ch
argi
ng s
tatu
s an
d al
so
indi
cate
s w
hen
a so
lar i
nput
faul
t con
ditio
n ex
ists
.
2 - P
ower
Ter
min
al B
lock
Pow
er te
rmin
atio
ns fo
r sys
tem
Sol
ar, B
atte
ry, a
nd L
oad
conn
ectio
ns.
A re
mov
able
jum
per t
o se
lect
the
batte
ry ty
pe.
1 2
8
7
6 5 4
3
4 - M
eter
Con
nect
ion
A co
mm
unic
atio
n po
rt fo
r the
Mor
ning
star
Rem
ote
Met
er
or P
erso
nal C
ompu
ter (
PC
) con
nect
ion.
A M
SC
ada
pter
is
requ
ired,
ava
ilabl
e se
para
tely.
5 - S
ettin
gs S
witc
hes
of th
e S
unS
aver
MP
PT.
6 - R
emot
e Te
mpe
ratu
re S
enso
r (R
TS) T
erm
inal
sC
onne
ctio
n po
int f
or a
Mor
ning
star
RTS
(opt
iona
l) to
re
mot
ely
mon
itor b
atte
ry te
mpe
ratu
re.
NO
TE:
The
use
of a
Rem
ote
Tem
pera
ture
Sen
sor i
s st
rong
ly re
com
men
ded
perf
orm
ance
.
7 - L
ocal
Tem
pera
ture
Sen
sor
Mea
sure
s am
bien
t tem
pera
ture
. Bat
tery
regu
latio
n is
ad
just
ed b
ased
on
ambi
ent t
empe
ratu
re u
nles
s an
opt
iona
l R
TS is
inst
alle
d.
Pro
vide
s ap
prox
imat
e ba
ttery
sta
te o
f cha
rge
indi
catio
n an
d al
so in
dica
tes
whe
n a
syst
em o
r loa
d fa
ult c
ondi
tion
exis
ts.
2.0
GE
NE
RA
L IN
FOR
MAT
ION
MO
RN
ING
STA
R C
OR
PO
RAT
ION
9
2.3
Opt
iona
l Acc
esso
ries
The
follo
win
g ac
cess
orie
s ar
e av
aila
ble
for p
urch
ase
sepa
rate
ly fr
om y
our a
utho
rized
Mor
ning
star
dea
ler.
Rem
ote
Tem
pera
ture
Sen
sor (
Mod
el: R
TS)
The
RTS
mea
sure
s ba
ttery
tem
pera
ture
for a
ccur
ate
tem
pera
ture
co
mpe
nsat
ion
and
is re
com
men
ded
whe
n th
e am
bien
t bat
tery
te
mpe
ratu
re d
iffer
s fro
m th
e am
bien
t con
trolle
r tem
pera
ture
by
+/- 5
deg
rees
C o
r mor
e. A
n R
TS c
an b
e at
tach
ed to
the
Sun
Sav
er
MP
PT
at a
ny ti
me.
The
Sun
Sav
er M
PP
T w
ill a
utom
atic
ally
use
the
RTS
for b
atte
ry te
mpe
ratu
re c
ompe
nsat
ion
whe
n in
stal
led.
The
st
anda
rd c
able
leng
th is
33
ft (1
0 m
), an
d ca
n be
ext
ende
d to
100
ft
(30
m) i
f req
uire
d. In
stal
latio
n in
stru
ctio
ns a
re p
rovi
ded
with
the
RTS
.N
OTE
: Th
e us
e of
a R
emot
e Te
mpe
ratu
re S
enso
r is
stro
ngly
reco
mm
ende
d
perf
orm
ance
.
Rem
ote
Met
er (M
odel
: RM
-1)
The
digi
tal R
emot
e M
eter
dis
play
s sy
stem
ope
ratin
g in
form
atio
n,
erro
r ind
icat
ions
, and
sel
f-dia
gnos
tic re
ad-o
ut. I
nfor
mat
ion
is
disp
laye
d on
a b
ackl
it 4-
digi
t cus
tom
LC
D d
ispl
ay. T
he la
rge
num
eric
al d
ispl
ay a
nd ic
ons
are
easy
to re
ad a
nd la
rge
butto
ns
mak
e na
viga
ting
the
met
er m
enus
eas
y. A
dditi
onal
ly, a
sta
tus
LED
an
d th
ree
(3) b
atte
ry S
OC
LE
Ds
prov
ide
syst
em s
tatu
s at
a g
lanc
e.
usin
g th
e m
ount
ing
fram
e (in
clud
ed).
The
RM
-1 is
sup
plie
d w
ith 3
3 ft
(10.
0 m
) of c
able
, a m
ount
ing
fram
e, a
nd m
ount
ing
scre
ws.
The
R
M-1
con
nect
s to
the
RJ-
11
Met
er p
ort o
n th
e S
unS
aver
MP
PT.
PC M
eter
Bus
Ada
pter
TM (M
odel
: MSC
)Th
e M
SC
con
verts
the
Met
erB
us R
J-11
ele
ctric
al in
terfa
ce to
an
isol
ated
sta
ndar
d R
S-2
32 in
terfa
ce w
hich
ena
bles
com
mun
icat
ion
betw
een
the
Sun
Sav
er M
PP
T an
d a
pers
onal
com
pute
r (P
C).
The
MS
C is
requ
ired
for p
rogr
amm
ing
cust
om c
harg
ing
setp
oint
s an
d fo
r lo
ggin
g da
ta. S
ee S
ectio
n 4.
7 P
rogr
amm
ing
Cus
tom
Set
poin
ts.
3.03.
0 In
stal
latio
n In
stru
ctio
ns
3.1
Gen
eral
Inst
alla
tion
Not
es
begi
nnin
g in
stal
latio
n.
Be
very
car
eful
whe
n w
orki
ng w
ith b
atte
ries.
Wea
r ey
e pr
otec
tion.
Hav
e fre
sh w
ater
ava
ilabl
e to
was
h
and
clea
n an
y co
ntac
t with
bat
tery
aci
d.
Use
insu
late
d to
ols
and
avoi
d pl
acin
g m
etal
obj
ects
ne
ar th
e ba
tterie
s.
Exp
losi
ve b
atte
ry g
asse
s m
ay b
e pr
esen
t dur
ing
rele
ase
the
gass
es.
Do
not i
nsta
ll in
loca
tions
whe
re w
ater
can
ent
er th
e co
ntro
ller.
Loos
e po
wer
con
nect
ions
and
/or c
orro
ded
wire
s
may
resu
lt in
resi
stiv
e co
nnec
tions
that
mel
t wire
in
sula
tion,
bur
n su
rrou
ndin
g m
ater
ials
, or e
ven
caus
e . E
nsur
e tig
ht c
onne
ctio
ns a
nd u
se c
able
cla
mps
to
sec
ure
cabl
es a
nd p
reve
nt th
em fr
om s
way
ing
in
mob
ile a
pplic
atio
ns.
Onl
y ch
arge
lead
-aci
d or
NiC
d ba
tterie
s.
The
Sun
Sav
er M
PP
T B
atte
ry c
onne
ctio
n m
ay b
e
wire
d to
one
bat
tery
or a
ban
k of
bat
terie
s. T
he fo
l-lo
win
g in
stru
ctio
ns re
fer t
o a
sing
ular
bat
tery
, but
it
is im
plie
d th
at th
e ba
ttery
con
nect
ion
can
be m
ade
to
eith
er o
ne b
atte
ry o
r a g
roup
of b
atte
ries
in a
bat
-te
ry b
ank.
3.0
INS
TALL
ATIO
N IN
STR
UC
TIO
NS
MO
RN
ING
STA
R C
OR
PO
RAT
ION
11
The
four
(4)
and
the
Bat
tery
Sel
ect
Jum
per a
djus
t the
SS
-MP
PT
batte
ry ty
pe, l
oad
cont
rol,
equa
lizat
ion,
and
com
mun
icat
ion
setti
ngs.
Thi
s se
ctio
n
The
SS
-MP
PT
prov
ides
four
(4) d
iffer
ent b
atte
ry ty
pes
as s
how
n in
tabl
e 1
belo
w. U
se
1 a
nd th
e B
atte
ry S
elec
t Jum
per t
o ch
oose
the
batte
ry ty
pe. S
ee
for d
etai
led
char
ging
in
form
atio
n fo
r eac
h ba
ttery
type
.Th
e ba
ttery
sel
ect j
umpe
r is
secu
red
in th
e te
rmin
al b
lock
shou
ld b
e re
mov
ed o
r rem
ain
in p
lace
, dep
endi
ng o
n th
e de
sire
d ba
ttery
type
.
Switc
h 1
Gel
1IN
SE
RTE
DO
N (
Sea
led
INS
ER
TED
OFF
(
AG
M1
RE
MO
VE
DO
N (
Floo
ded
RE
MO
VE
DO
FF (
(1) S
etpo
ints
for t
his
batte
ry ty
pe c
an b
e m
odifi
ed w
ith c
usto
m p
rogr
am-
min
g. S
ee S
ectio
n 4.
7 P
rogr
amm
ing
Cus
tom
Set
poin
ts fo
r mor
e in
form
a-tio
n.
Tabl
e 1.
Bat
tery
Typ
e se
lect
ion
3.0
Figu
re 2
. Rem
ovin
g th
e B
atte
ry S
elec
t ju
mpe
r.
Load
Con
trol
– L
ow V
olta
ge D
isco
nnec
t / R
econ
nect
Cho
ose
betw
een
two
(2) l
oad
cont
rol
-ne
ct /
Rec
onne
ct s
ettin
gs.
SW
ITC
H 2
OFF
(:
LVD
= 1
1.50
V, L
VR
= 1
2.60
VS
WIT
CH
2 O
N (
: LV
D =
11.
00 V
, LV
R =
12.
10 V
2
(2) T
hese
val
ues
can
be m
odifi
ed w
ith c
usto
m p
rogr
amm
ing.
See
Sec
tion
4.7
Pro
gram
min
g C
usto
m S
etpo
ints
for m
ore
info
rmat
ion.
Enab
le o
r Dis
able
Aut
o-Eq
ualiz
atio
nTu
rn th
e au
to-e
qual
ize
feat
ure
OFF
or O
N. T
he a
uto-
equa
lize
feat
ure
will
adm
inis
ter a
n eq
ualiz
atio
n ch
arge
disc
harg
es to
o lo
w th
e pr
evio
us n
ight
. The
re is
no
equa
lizat
ion
char
ge fo
r the
gel
or s
eale
d ba
ttery
type
.
SW
ITC
H 3
OFF
(:
AU
TO-E
QU
ALI
ZE O
FF
SW
ITC
H 3
ON
(:
AU
TO-E
QU
ALI
ZE O
N
(agm
, b
atte
ry ty
pe o
nly)
3.0
INS
TALL
ATIO
N IN
STR
UC
TIO
NS
MO
RN
ING
STA
R C
OR
PO
RAT
ION
13
Com
mun
icat
ion
– M
eter
/ M
OD
BU
S®C
hoos
e th
e de
sire
d co
mm
unic
atio
n pr
otoc
ol fo
r the
RJ-
11
met
er c
onne
ctio
n. S
elec
t the
Met
er p
roto
col t
o co
mm
unic
ate
with
a M
orni
ngst
ar R
emot
e M
eter
(opt
iona
l acc
esso
ry).
Sel
ect t
he
pro
toco
l to
com
mun
icat
e w
ith
a P
C2 a
nd M
orni
ngst
ar’s
MS
View
sof
twar
e.
is
an
open
com
mun
icat
ion
prot
ocol
sta
ndar
d us
ed b
y M
orni
ngst
ar’s
MS
View
PC
sof
twar
e an
d ot
her 3
rd p
arty
ha
rdw
are
/ sof
twar
e.
SW
ITC
H 4
OFF
(:
MO
RN
ING
STA
R R
EM
OTE
ME
TER
S
WIT
CH
4 O
N (
: M
OD
BU
S®
PR
OTO
CO
L FO
R
MS
VIE
W, 3
RD
PA
RTY
DE
VIC
ES
(2) M
orni
ngst
ar P
C M
eter
bus
Ada
pter
(Mod
el: M
SC
) req
uire
d. N
ot in
clud
ed.
See
Mor
ning
star
’s w
ebsi
te fo
r mor
e in
form
atio
n. w
ww
.mor
ning
star
corp
.com
.
MO
DB
US
® is
a re
gist
ered
trad
emar
k of
Mod
bus-
IDA
(ww
w.m
odbu
s-id
a.or
g)
3.03.
3 M
ount
ing
gass
es c
an a
ccum
ulat
e.
Step
1: C
hoos
e M
ount
ing
Loca
tion
Loca
te th
e S
unS
aver
MP
PT
on a
ver
tical
sur
face
pr
otec
ted
from
dire
ct s
un, h
igh
tem
pera
ture
s, a
nd w
ater
.
Step
2: C
heck
for C
lear
ance
Pla
ce th
e S
unS
aver
MP
PT
in th
e lo
catio
n w
here
it w
ill b
e
that
ther
e is
am
ple
room
abo
ve a
nd b
elow
the
cont
rolle
r for
WA
RM
AIR
CO
OL
AIR
AT L
EA
ST
6” (1
50 m
m)
AT L
EA
ST
6” (1
50 m
m)
Figu
re 3
. Mou
ntin
g an
d co
olin
g
3.0
INS
TALL
ATIO
N IN
STR
UC
TIO
NS
MO
RN
ING
STA
R C
OR
PO
RAT
ION
15
Step
3: M
ark
Hol
esU
se a
pen
cil o
r pen
to m
ark
the
four
(4) m
ount
ing
hole
lo
catio
ns o
n th
e m
ount
ing
surfa
ce.
Step
4: D
rill H
oles
Rem
ove
the
cont
rolle
r and
dril
l 3/3
2” (2
.5 m
m) h
oles
in th
e m
arke
d lo
catio
ns.
Step
5: S
ecur
e C
ontr
olle
rP
lace
the
cont
rolle
r on
the
surfa
ce a
nd a
lign
the
mou
ntin
g ho
les
with
the
drill
ed h
oles
in s
tep
4. S
ecur
e th
e co
ntro
ller i
n pl
ace
usin
g th
e m
ount
ing
scre
ws
(incl
uded
).
3.03.
4 W
iring N
OTE
: A re
com
men
ded
conn
ectio
n or
der h
as b
een
sequ
ence
of c
onnn
ectio
ns.
not r
equi
red
for c
orre
ct o
pera
tion.
! !m
ay le
ad to
3.0
INS
TALL
ATIO
N IN
STR
UC
TIO
NS
MO
RN
ING
STA
R C
OR
PO
RAT
ION
17
Step
1: L
oad
Wiri
ngTh
e S
S-M
PP
T lo
ad o
utpu
t con
nect
ion
will
pro
vide
bat
tery
vo
ltage
to s
yste
m lo
ads
such
as
light
s, p
umps
, mot
ors,
an
d el
ectro
nic
devi
ces.
See
Sec
tion
4.4
Load
Con
trol
Info
rmat
ion
for m
ore
deta
ils a
bout
load
con
trol.
LOA
DPO
SITI
VE (+
)
LOA
DN
EGAT
IVE
(-)
25 A
MP
FUSE
Figu
re 4
. Loa
d w
irin
g
Con
nect
load
pos
itive
(+) a
nd n
egat
ive
(-) l
oad
wire
s to
th
e sy
stem
load
(s) o
r loa
d di
strib
utio
n pa
nel a
s sh
own
in
man
ual f
or c
orre
ct w
ire s
ize.
If re
quire
d, th
e ne
gativ
e lo
ad c
onne
ctio
n m
ay b
e ea
rth g
roun
ded.
Use
app
ropr
iate
gau
ge w
ire a
nd p
rope
r gr
ound
ing
met
hods
for t
he in
stal
latio
n si
te.
An
in-li
ne fu
se h
olde
r sho
uld
be w
ired
in s
erie
s in
the
load
po
sitiv
e (+
) wire
as
show
n. D
O N
OT
INS
ER
T A
FUS
E A
T TH
IS T
IME
.If
wiri
ng th
e lo
ad c
onne
ctio
n to
a lo
ad d
istri
butio
n pa
nel,
each
load
circ
uit s
houl
d be
fuse
d se
para
tely.
The
tota
l loa
d dr
aw s
houl
d no
t exc
eed
the
15 A
load
ratin
g
3.0
6 in
(150
mm
)M
AX.
BAT
TER
YN
EG
ATIV
E (-
)B
ATTE
RY
PO
SIT
IVE
(+) +
-
25 A
MP
FUS
E
12V
/ 24
V B
ATTE
RY
EA
RTH
GR
OU
ND
Figu
re 5
. Bat
tery
wir
ing.
Bef
ore
conn
ectin
g th
e ba
ttery
, mea
sure
the
batte
ry
volta
ge. I
t mus
t be
over
7 v
olts
to p
ower
the
cont
rolle
r. Fo
r 24
volt
syst
ems,
the
batte
ry v
olta
ge m
ust b
e gr
eate
r th
an 1
5.5
volts
to p
rope
rly d
etec
t a 2
4V b
atte
ry. T
he 1
2/24
vo
lt ba
ttery
det
ectio
n is
aut
omat
ic a
nd th
e ch
eck
is o
nly
perfo
rmed
at s
tart-
up.
Con
nect
the
batte
ry to
the
SS
-MP
PT.
Ref
er to
the
wire
ga
uge
char
t on
page
41
of th
is m
anua
l for
cor
rect
wire
siz
e.
If re
quire
d, th
e ne
gativ
e ba
ttery
con
nect
ion
may
be
earth
gro
unde
d. U
se a
ppro
pria
te g
auge
wire
and
pro
per
grou
ndin
g m
etho
ds fo
r the
inst
alla
tion
site
. W
ire a
n in
-line
fuse
hol
der n
o m
ore
than
6 in
ches
(150
m
m) f
rom
the
batte
ry p
ositi
ve te
rmin
al. D
O N
OT
INS
ER
T A
FUS
E A
T TH
IS T
IME
.
3.0
INS
TALL
ATIO
N IN
STR
UC
TIO
NS
MO
RN
ING
STA
R C
OR
PO
RAT
ION
19
3.0St
ep 3
: Sol
ar W
iring
The
Sun
Sav
er M
PP
T ca
n ac
cept
12
V ,
24 V
, or 3
6 V
nom
inal
off-
grid
sol
ar m
odul
e ar
rays
. Grid
-tie
sola
r m
odul
e(s)
may
be
used
if th
e op
en c
ircui
t vol
tage
(Voc
) doe
s no
t exc
eed
the
SS
-MP
PT
75 V
olt m
axim
um s
olar
inpu
t ra
ting.
The
sol
ar m
odul
e(s)
nom
inal
vol
tage
mus
t be
equa
l to
or g
reat
er th
an th
e no
min
al b
atte
ry v
olta
ge. F
or 2
4 V
sy
stem
s, a
24
V o
r 36
V n
omin
al s
olar
arr
ay m
ust b
e us
ed.
Figu
re 6
. Sol
ar in
put
wir
ing.
12 V
olt
MO
DU
LE12
Vol
tM
OD
ULE
12 V
olt
MO
DU
LE
SO
LAR
PO
SIT
IVE
(+)
SO
LAR
NE
GAT
IVE
(-)
(+)
(+)
(+)
(-)(-)
(-)
36 V
NO
MIN
AL
MA
X.
EA
RTH
GR
OU
ND
Con
nect
the
sola
r mod
ule(
s) to
the
SS
-MP
PT.
Ref
er to
the
wire
gau
ge c
hart
on p
age
41 o
f thi
s m
anua
l for
cor
rect
wire
si
ze.
If re
quire
d, th
e ne
gativ
e so
lar c
onne
ctio
n m
ay b
e ea
rth g
roun
ded.
Use
app
ropr
iate
gau
ge w
ire a
nd p
rope
r gr
ound
ing
met
hods
for t
he in
stal
latio
n si
te.
Step
4: A
cces
sorie
s (o
ptio
nal)
Inst
all t
he R
emot
e Te
mpe
ratu
re S
enso
r and
Rem
ote
Met
er (b
oth
purc
hase
d se
para
tely
) if r
equi
red.
Ref
er to
th
e in
stru
ctio
ns p
rovi
ded
with
eac
h ac
cess
ory
for d
etai
led
inst
alla
tion
proc
edur
es.
corr
ect p
olar
ity a
t eac
h co
nnec
tion.
Ver
ify th
at a
ll se
ven
(7)
SS
-MP
PT
pow
er te
rmin
als
are
tight
ened
.
Figu
re 7
. Sys
tem
Wir
ing
Rev
iew
+-
21
3
Step
6: I
nsta
ll Fu
ses
Inst
all a
25
Am
p D
C-r
ated
fuse
in e
ach
fuse
hol
der i
n th
e fo
llow
ing
orde
r:
1. L
oad
circ
uit
2.
Bat
tery
circ
uit
The
SS
-MP
PT
shou
ld b
egin
the
pow
er-u
p LE
D s
eque
nce
whe
n ba
ttery
pow
er is
app
lied.
Obs
erve
that
the
Bat
tery
S
tatu
s LE
Ds
blin
k in
seq
uenc
e on
e tim
e.
erro
r seq
uenc
e ex
ists
, ref
er to
4.0
OP
ER
ATIO
NM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N21
4.04.
0 O
pera
tion
4.1
LED
Indi
catio
ns
STAT
US
LED
The
Sta
tus
LED
indi
cate
s ch
argi
ng s
tatu
s an
d an
y ex
istin
g so
lar i
nput
err
or c
ondi
tions
. The
Sta
tus
LED
is o
n w
hen
char
ging
dur
ing
the
day
and
off a
t nig
ht. T
he S
tatu
s
Tabl
e 2
lists
the
Sta
tus
LED
indi
catio
ns.
Col
orIn
dica
tion
Ope
ratin
g St
ate
Non
eO
ff (w
ith h
eartb
eat¹)
Nig
ht
Gre
enO
n S
olid
( w
ith h
eartb
eat²
)C
harg
ing
Red
Flas
hing
Err
or
Red
On
Sol
id( w
ith h
eartb
eat2 )
Crit
ical
Err
or
¹ he
artb
eat i
ndic
atio
n fli
cker
s th
e S
tatu
s LE
D o
n br
iefly
eve
ry 5
sec
onds
² he
artb
eat i
ndic
atio
n fli
cker
s th
e S
tatu
s LE
D o
ff br
iefly
eve
ry 5
sec
onds
For m
ore
info
rmat
ion
on S
tatu
s LE
D e
rror
s, s
ee S
ectio
n 5.
1 E
rror
Indi
catio
ns.
BAT
TERY
SO
C L
EDS
Thre
e (3
) bat
tery
“sta
te o
f cha
rge”
LE
Ds
indi
cate
the
leve
l of c
harg
e on
the
batte
ry. T
he S
OC
indi
catio
n is
bas
ed
on b
atte
ry v
olta
ge s
etpo
ints
alo
ne, w
hich
onl
y pr
ovid
es a
n ap
prox
imat
ion
of th
e ac
tual
sta
te o
f cha
rge
of th
e ba
ttery
.Ta
ble
3 lis
ts th
e S
OC
LE
D in
dica
tions
.
SOC
LED
Indi
catio
nLo
ad S
tatu
s
Gre
enFa
st F
lash
ing
(2 F
lash
/ se
c)E
qual
ize
Cha
rge
Load
On
Gre
enM
ed. F
lash
ing
(1 F
lash
/ se
c)A
bsor
ptio
n C
harg
eLo
ad O
n
Gre
enS
low
Fla
shin
g (1
Fla
sh /
2 se
c)Fl
oat C
harg
eLo
ad O
n
Gre
enO
n so
lidN
early
Ful
lLo
ad O
n
Yello
wO
n so
lidH
alf F
ull
Load
On
Red
Flas
hing
(1
Fla
sh /
sec)
Bat
tery
Low
LVD
War
ning
(Loa
d O
n)
Red
On
solid
Bat
tery
Em
pty
LVD
(Loa
d O
ff)
!m
ultip
le B
atte
ry
for m
ore
info
rmat
ion.
4.0
OP
ER
ATIO
NM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N23
4.04.
2 Tr
akSt
arTM
The
SS
-MP
PT
utili
zes
Mor
ning
star
’s T
rakS
tar M
axim
um
Pow
er P
oint
Tra
ckin
g te
chno
logy
to e
xtra
ct m
axim
um p
ower
fro
m th
e so
lar m
odul
e(s)
. The
trac
king
alg
orith
m is
fully
au
tom
atic
and
doe
s no
t req
uire
use
r adj
ustm
ent.
Trak
star
te
chno
logy
will
trac
k th
e ar
ray
(Vm
p) as
it v
arie
s w
ith w
eath
er c
ondi
tions
, ens
urin
g th
at
max
imum
pow
er is
har
vest
ed fr
om th
e ar
ray
thro
ugh
the
cour
se o
f the
day
.
Cur
rent
Boo
stIn
man
y ca
ses,
Tra
kSta
r MP
PT
tech
nolo
gy w
ill “b
oost
” the
so
lar c
harg
e cu
rren
t. Fo
r exa
mpl
e, a
sys
tem
may
hav
e 2
does
not
cre
ate
curr
ent!
Res
t ass
ured
that
the
pow
er in
to
the
SS
-MP
PT
is th
e sa
me
as th
e po
wer
out
of t
he S
S-M
PP
T.
Sin
ce p
ower
is th
e pr
oduc
t of v
olta
ge a
nd c
urre
nt (V
olts
x
Am
ps),
the
follo
win
g is
true
*:
(1)
Powe
r Into
the S
S-MP
PT =
Pow
er O
ut of
the S
S-MP
PT(2
) Vo
lts In
x Am
ps In
= V
olts O
ut x A
mps O
ut
* as
sum
ing
100%
effi
cien
cy. l
osse
s in
wiri
ng a
nd c
onve
rsio
n ex
ist.
If th
e so
lar m
odul
e’s
Vm
p is
grea
ter t
han
the
batte
ry
volta
ge, i
t fol
low
s th
at th
e ba
ttery
cur
rent
mus
t be
prop
ortio
nally
gre
ater
than
the
sola
r inp
ut c
urre
nt s
o th
at
inpu
t and
out
put p
ower
are
bal
ance
d. T
he g
reat
er th
e di
ffere
nce
betw
een
the
max
imum
pow
er v
olta
ge a
nd b
atte
ry
volta
ge, t
he g
reat
er th
e cu
rren
t boo
st. C
urre
nt b
oost
can
be
su
bsta
ntia
l in
syst
ems
whe
re th
e so
lar a
rray
is o
f a h
ighe
r no
min
al v
olta
ge th
an th
e ba
ttery
as
desc
ribed
in th
e ne
xt
sect
ion.
Hig
h Vo
ltage
Str
ings
and
Grid
-tie
Mod
ules
to c
harg
e 12
Vol
t or 2
4 Vo
lt ba
tterie
s w
ith s
olar
arr
ays
of
high
er n
omin
al v
olta
ges.
A 1
2V b
atte
ry b
ank
can
be c
harg
ed
with
a 1
2 V,
24
V, o
r 36
V n
omin
al o
ff-gr
id s
olar
arr
ay.
Cer
tain
grid
-tie
sola
r mod
ules
may
als
o be
use
d as
long
as
the
sola
r arr
ay o
pen
circ
uit v
olta
ge (V
oc) r
atin
g w
ill n
ot
exce
ed th
e S
S-M
PP
T 75
V m
axim
um in
put v
olta
ge ra
ting
at
wor
st-c
ase
(col
dest
) mod
ule
tem
pera
ture
. The
sol
ar m
odul
e do
cum
enta
tion
shou
ld p
rovi
de V
oc v
s. te
mpe
ratu
re d
ata.
Hig
her s
olar
inpu
t vol
tage
resu
lts in
low
er s
olar
inpu
t cu
rren
t for
a g
iven
inpu
t pow
er. H
igh
volta
ge s
olar
inpu
t st
rings
allo
w fo
r sm
alle
r gau
ge s
olar
wiri
ng. T
his
is
espe
cial
ly h
elpf
ul fo
r sys
tem
s w
ith lo
ng w
iring
runs
bet
wee
n th
e so
lar a
rray
and
the
SS
-MP
PT.
An
Adv
anta
ge O
ver T
radi
tiona
l Con
trol
lers
Trad
ition
al c
ontro
llers
con
nect
the
sola
r mod
ule
dire
ctly
to
the
batte
ry w
hen
rech
argi
ng. T
his
requ
ires
that
the
sola
r mod
ule
oper
ate
in a
vol
tage
rang
e th
at is
bel
ow th
e m
odul
e’s
Vm
p. In
a 1
2 V
sys
tem
for e
xam
ple,
the
batte
ry
volta
ge m
ay ra
nge
from
10
- 15
Vdc
but
the
mod
ule’
s V
mp i
s ty
pica
lly a
roun
d 17
V. F
igur
e 8
show
s a
typi
cal c
urre
nt v
s.
volta
ge o
utpu
t cur
ve fo
r a n
omin
al 1
2V o
ff-gr
id m
odul
e.
CURRENTVO
LTA
GE
10 V
15 V
MAX
IMU
MPO
WER
POIN
T
{BATTERY VO
LTA
GE
RA
NG
E
~17
V
Figu
re 8
. Nom
inal
12
V S
olar
Mod
ule
I-V
cur
ve
4.0
OP
ER
ATIO
NM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N25
The
arra
y V
mp i
s th
e vo
ltage
whe
re th
e pr
oduc
t of c
urre
nt
and
volta
ge (A
mps
x V
olts
) is
grea
test
, whi
ch fa
lls o
n th
e “k
nee”
of t
he s
olar
mod
ule
I-V c
urve
as
show
n in
Fig
ure
8.
Bec
ause
Tra
ditio
nal c
ontro
llers
do
no o
pera
te a
t the
Vm
p of
the
sola
r arr
ay, e
nerg
y is
was
ted
that
cou
ld o
ther
wis
e be
us
ed to
cha
rge
the
batte
ry a
nd p
ower
sys
tem
load
s. T
he
grea
ter t
he d
iffer
ence
bet
wee
n ba
ttery
vol
tage
and
the
Vm
p of
the
mod
ule,
the
mor
e en
ergy
is w
aste
d.Tr
akS
tar M
PP
T te
chno
logy
will
alw
ays
oper
ate
at th
e V
mp
resu
lting
in le
ss w
aste
d en
ergy
com
pare
d to
trad
ition
al
cont
rolle
rs.
The
Sun
Sav
er M
PP
T ha
s a
4-st
age
batte
ry c
harg
ing
Figu
re 9
sho
ws
the
sequ
ence
of t
he s
tage
s.
NIG
HT
NIG
HT
MPP
TC
HA
RG
EA
BSO
RPT
ION
FLO
AT
EQU
ALI
ZE
VOLTAGE
TIM
E
Figu
re 9
. Sun
Sav
er M
PP
T c
harg
ing
algo
rith
m
Bul
k C
harg
eIn
this
sta
ge, t
he b
atte
ry v
olta
ge h
as n
ot y
et re
ache
d ab
sorp
tion
volta
ge a
nd 1
00%
of a
vaila
ble
sola
r pow
er is
us
ed to
rech
arge
the
batte
ry.
Abs
orpt
ion
Whe
n th
e ba
ttery
has
rech
arge
d to
the
Abs
orpt
ion
volta
ge
setp
oint
, con
stan
t-vol
tage
regu
latio
n is
use
d to
pre
vent
he
atin
g an
d ex
cess
ive
batte
ry g
assi
ng.
Floa
tA
fter t
he b
atte
ry is
fully
cha
rged
the
SS
-MP
PT
redu
ces
calle
d a
trick
le c
harg
e.D
epen
ding
on
batte
ry h
isto
ry, t
he b
atte
ry re
mai
ns in
the
4.0
4.0
OP
ER
ATIO
NM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N27
4.0ab
sorp
tion
stag
e fo
r 3 o
r 4 h
ours
bef
ore
trans
ition
ing
to t
he
If th
e au
to-e
qual
ize
feat
ure
is e
nabl
ed, t
he S
S-M
PP
T
days
. Equ
aliz
e ch
argi
ng ra
ises
the
batte
ry v
olta
ge a
bove
th
e st
anda
rd a
bsor
ptio
n vo
ltage
so
that
the
elec
troly
te
equa
lizes
the
indi
vidu
al c
ell v
olta
ges
with
in th
e ba
ttery
.
4.4
Load
Con
trol
Info
rmat
ion
The
prim
ary
purp
ose
of th
e lo
ad c
ontro
l fun
ctio
n is
to
disc
onne
ct s
yste
m lo
ads
whe
n th
e ba
ttery
has
dis
char
ged
to a
low
sta
te o
f cha
rge
and
reco
nnec
t sys
tem
load
s w
hen
light
s, p
umps
, mot
ors,
DC
app
lianc
es, a
nd o
ther
ele
ctro
nic
devi
ces.
The
tota
l cur
rent
dra
w o
f all
load
s m
ust n
ot e
xcee
d th
e S
S-M
PP
T 15
Am
p m
axim
um lo
ad ra
ting.
!
Load
Con
trol
Set
tings
Load
con
trol i
s fu
lly a
utom
atic
. Cho
ose
betw
een
two
(2)
fact
ory
Low
Vol
tage
Dis
conn
ect (
LVD
) and
Low
Vol
tage
R
econ
nect
(LV
R) s
ettin
gs b
y ad
just
ing
switc
h #2
. See
fo
r mor
e in
form
atio
n.
Cur
rent
Com
pens
atio
nA
ll LV
D a
nd L
VR
set
poin
ts a
re c
urre
nt c
ompe
nsat
ed.
Und
er lo
ad th
e ba
ttery
vol
tage
will
sag
in p
ropo
rtion
to th
e cu
rren
t dra
w o
f the
load
. A s
hort-
term
larg
e lo
ad c
ould
cau
se
a pr
emat
ure
LVD
with
out t
he c
urre
nt c
ompe
nsat
ion
feat
ure.
LV
D a
nd L
VR
set
poin
ts a
re a
djus
ted
low
er p
er th
e fo
llow
ing
tabl
e.
Cur
rent
Com
pens
atio
n12
Volt
-15 m
V pe
r amp
of lo
ad24
Volt
-30 m
V pe
r amp
of lo
ad
Tabl
e 4.
Cur
rent
com
pens
atio
n va
lues
.
4.0
OP
ER
ATIO
NM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N29
4.0LV
D W
arni
ngA
s th
e ba
ttery
dis
char
ges
the
Bat
tery
Sta
tus
LED
s w
ill
trans
ition
from
gre
en to
yel
low
and
then
from
yel
low
to
low
vol
tage
dis
conn
ect e
vent
will
occ
ur s
oon.
The
am
ount
of
time
betw
een
a gr
een
SO
C in
dica
tion
and
load
dis
conn
ect
will
dep
end
on m
any
fact
ors
incl
udin
g:ra
te o
f dis
char
ge (a
mou
nt o
f loa
d dr
aw)
capa
city
of t
he b
atte
ryhe
alth
of t
he b
atte
ryLV
D s
etpo
int
If th
e ba
ttery
dis
char
ges
to th
e LV
D s
etpo
int t
he lo
ad w
ill
disc
onne
ct a
nd a
sol
id re
d B
atte
ry S
tatu
s LE
D in
dica
tion
will
be d
ispl
ayed
.
Gen
eral
Loa
d C
ontr
ol N
otes
A 15
V m
axim
um re
gula
tion
volta
ge li
mit
(30
V @
24
V
nom
inal
) exi
sts
for a
ll ba
ttery
type
s. T
his
limit
ensu
res
that
the
batte
ry a
nd lo
ad te
rmin
al v
olta
ges
will
nev
er
exce
ed 1
5 V
/30
V. T
his
prot
ects
cer
tain
DC
load
s th
at
may
be
dam
aged
by
high
inpu
t vol
tage
.
Do
not w
ire m
ultip
le S
unS
aver
MP
PT
load
out
puts
to
geth
er in
par
alle
l to
pow
er D
C lo
ads
with
a c
urre
nt
draw
gre
ater
than
15A
. Equ
al c
urre
nt s
harin
g ca
nnot
be
gua
rant
eed
and
an o
ver-
load
con
ditio
n w
ill lik
ely
occu
r on
one
or m
ore
cont
rolle
rs.
pola
rity
to a
live
load
circ
uit.
A re
vers
e po
larit
y co
nnec
-tio
n m
ay d
amag
e th
e lo
ad. A
lway
s do
uble
che
ck lo
ad
conn
ectio
ns b
efor
e ap
plyi
ng p
ower
.
4.5
Prot
ectio
ns
Sola
r Ove
rload
(No
LED
indi
catio
n) T
he S
unS
aver
MP
PT
will
lim
it ba
ttery
cu
rren
t to
the
15 A
mp
max
imum
ratin
g. A
n ov
er-s
ized
so
lar a
rray
will
not
ope
rate
at p
eak
pow
er. T
he s
olar
arr
ay
shou
ld b
e le
ss th
an th
e S
S-M
PP
T ra
ting
for o
ptim
al p
erfo
rman
ce. S
ee S
ectio
n 7.
0 Te
chni
cal
for m
ore
info
rmat
ion.
Load
Ove
rload
(B
atte
ry S
tatu
s LE
Ds:
R/Y
-G s
eque
ncin
g) If
the
load
cu
rren
t exc
eeds
the
max
imum
load
cur
rent
ratin
g, th
e S
S-
MP
PT
will
dis
conn
ect t
he lo
ad. T
he g
reat
er th
e ov
erlo
ad th
e fa
ster
the
load
will
be
disc
onne
cted
. A s
mal
l ove
rload
cou
ld
take
a fe
w m
inut
es to
dis
conn
ect.
The
SS
-MP
PT
will
atte
mpt
to re
conn
ect t
he lo
ad tw
o (2
) tim
es. E
ach
atte
mpt
is a
ppro
xim
atel
y 10
sec
onds
apa
rt. If
th
e ov
erlo
ad re
mai
ns a
fter t
wo
(2) a
ttem
pts,
the
load
will
re
mai
n di
scon
nect
ed u
ntil
pow
er is
rem
oved
and
reap
plie
d.
Sola
r Sho
rt C
ircui
t (C
harg
ing
Sta
tus
LED
: OFF
) Sol
ar in
put p
ower
wire
s ar
e sh
ort-c
ircui
ted.
Cha
rgin
g au
tom
atic
ally
resu
mes
whe
n th
e sh
ort i
s cl
eare
d.
Load
Sho
rt C
ircui
t(B
atte
ry S
tatu
s LE
Ds:
R/Y
-G s
eque
ncin
g) F
ully
pro
tect
ed
agai
nst l
oad
wiri
ng s
hort-
circ
uits
. Afte
r tw
o (2
) aut
omat
ic
load
reco
nnec
t atte
mpt
s (1
0 se
cond
s be
twee
n ea
ch
atte
mpt
), th
e fa
ult m
ust b
e cl
eare
d by
rem
ovin
g an
d re
appl
ying
pow
er.
4.0
OP
ER
ATIO
NM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N31
4.0H
igh
Volta
ge In
put
circ
uit v
olta
ge (V
oc) e
xcee
ds th
e 75
vol
t max
imum
ratin
g th
e ar
ray
will
rem
ain
disc
onne
cted
unt
il th
e V oc
falls
saf
ely
belo
w
the
max
imum
ratin
g.
(No
LED
indi
catio
n, n
ot p
ower
ed) F
ully
pro
tect
ed a
gain
st
reve
rse
batte
ry c
onne
ctio
n. N
o da
mag
e to
the
cont
rolle
r will
re
sult.
Cor
rect
the
mis
wire
to re
sum
e no
rmal
ope
ratio
n.
Dam
aged
Loc
al T
empe
ratu
re S
enso
r (C
harg
ing
Sta
tus
LED
: R o
n so
lid) T
he lo
cal a
mbi
ent
tem
pera
ture
sen
sor i
s sh
ort-c
ircui
ted
or d
amag
ed. C
harg
ing
stop
s to
avo
id o
ver-
or u
nder
-cha
rgin
g. T
his
is a
crit
ical
er
ror.
Con
tact
you
r aut
horiz
ed M
orni
ngst
ar d
eale
r for
se
rvic
e.
Dam
aged
Inte
rnal
Tem
pera
ture
Sen
sor
(Cha
rgin
g S
tatu
s LE
D: R
on
solid
) The
inte
rnal
hea
tsin
k te
mpe
ratu
re s
enso
r is
dam
aged
. Thi
s is
a c
ritic
al e
rror
. C
onta
ct y
our a
utho
rized
Mor
ning
star
dea
ler f
or s
ervi
ce.
Hig
h Te
mpe
ratu
re(B
atte
ry S
tatu
s LE
D: R
-Y s
eque
ncin
g) T
he h
eats
ink
tem
pera
ture
has
exc
eede
d sa
fe li
mits
and
the
load
is
disc
onne
cted
. The
load
will
aut
omat
ical
ly re
conn
ect w
hen
the
heat
sink
coo
ls to
a s
afe
tem
pera
ture
.
Rem
ote
Tem
pera
ture
Sen
sor (
RTS
)(B
atte
ry S
tatu
s LE
D: R
/Y -
G/Y
seq
uenc
ing)
A b
ad R
TS
conn
ectio
n or
a s
ever
ed R
TS w
ire h
as d
isco
nnec
ted
the
tem
pera
ture
sen
sor d
urin
g ch
argi
ng. C
harg
ing
auto
mat
ical
ly
with
out a
RTS
, dis
conn
ect a
ll po
wer
to th
e S
unS
aver
MP
PT
and
then
reco
nnec
t.
Hig
h Vo
ltage
Tra
nsie
nts
Sol
ar, b
atte
ry, a
nd lo
ad p
ower
con
nect
ions
are
pro
tect
ed
agai
nst h
igh
volta
ge tr
ansi
ents
. In
light
ning
pro
ne a
reas
, ad
ditio
nal e
xter
nal s
uppr
essi
on is
reco
mm
ende
d.
4.6
Insp
ectio
n an
d M
aint
enan
ceTh
e fo
llow
ing
insp
ectio
ns a
nd m
aint
enan
ce ta
sks
are
reco
mm
ende
d at
leas
t tw
o tim
es p
er y
ear f
or b
est c
ontro
ller
perfo
rman
ce.
Tigh
ten
all t
erm
inal
s. In
spec
t for
loos
e, b
roke
n, o
r
corr
oded
con
nect
ions
.
Verif
y th
at a
ll w
ire c
lam
ps a
nd ti
e-do
wns
are
sec
ure.
Che
ck th
at th
e co
ntro
ller i
s m
ount
ed in
a c
lean
,
prot
ecte
d en
viro
nmen
t; fre
e of
dirt
, ins
ects
, nes
ts,
an
d co
rros
ion.
hole
s fo
r obs
truct
ions
.
Verif
y LE
D in
dica
tion
is c
onsi
sten
t with
the
pres
ent
syst
em c
ondi
tions
.
Verif
y th
at th
e R
emot
e Te
mpe
ratu
re S
enso
r (if
used
) is
secu
rely
atta
ched
to th
e R
TS te
rmin
als.
4.0
OP
ER
ATIO
NM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N33
5.04.
7 Pr
ogra
mm
ing
Cus
tom
Set
poin
ts
!co
ntro
l req
uire
men
ts th
at a
re n
ot m
et u
sing
the
fact
ory
defa
ult c
harg
e an
d lo
ad c
ontr
ol s
ettin
gs. T
he fa
ctor
y
user
s.
Cus
tom
cha
rgin
g an
d lo
ad s
etpo
ints
can
be
prog
ram
med
into
SS
-M
PP
T no
n-vo
latil
e m
emor
y us
ing
a P
C w
ith M
orni
ngst
ar
so
ftwar
e in
stal
led
and
a (m
odel
: MS
C).
Ref
er to
the
PC
so
ftwar
e is
ava
ilabl
e fo
r fre
e on
our
web
site
at:
http
://w
ww
.mor
ning
star
corp
.com
/
To u
se c
usto
m s
etpo
ints
, the
Set
tings
Sw
itche
s m
ust b
e ad
just
ed a
s fo
llow
s:
SWIT
CH
#1
ON
() T
O U
SE
CU
STO
M C
HA
RG
ING
SE
TPO
INTS
. U
SE
TH
E B
ATTE
RY
SE
LEC
T JU
MP
ER
TO
SE
LEC
T B
ETW
EE
N
TWO
SE
TS O
F C
US
TOM
CH
AR
GIN
G S
ETP
OIN
TS.
SWIT
CH
#2
ON
() T
O U
SE
CU
STO
M L
OA
D C
ON
TRO
L S
ETP
OIN
TS. pr
ogra
m th
e co
ntro
ller f
or
. Thi
s fu
nctio
nalit
y ca
n on
ly b
e en
able
d th
roug
h cu
stom
se
tting
s.
5.0
Trou
bles
hoot
ing
5.1
Erro
r Ind
icat
ions
feat
ure
to d
eter
min
e th
e ca
use
of th
e er
ror i
ndic
atio
n.
info
rmat
ion.
Stat
us L
ED E
rror
Indi
catio
ns
PV
Hig
h Vo
ltage
Dis
conn
ect
Flas
hing
Red
RTS
Sho
rted
Flas
hing
Red
RTS
Dis
conn
ecte
d
Flas
hing
Red
Dam
aged
loca
l tem
p. s
enso
r S
olid
Red
1
Dam
aged
hea
tsin
k te
mp.
sen
sor
Sol
id R
ed1
Dam
aged
inpu
t MO
SFE
Ts
Sol
id R
ed1
Firm
war
e E
rror
Sol
id R
ed1
1 - h
eartb
eat i
ndic
atio
n fli
cker
s th
e S
tatu
s LE
D o
ff br
iefly
eve
ry 5
sec
onds
Load
Hig
h Vo
ltage
Dis
conn
ect
R-G
Seq
uenc
ing
Hig
h Te
mpe
ratu
re D
isco
nnec
t R
-Y S
eque
ncin
gR
emot
e Te
mp.
Sen
sor E
rror
Y
/R -
G/Y
Seq
uenc
ing
Ext
erna
l Wiri
ng E
rror
G/R
-Y S
eque
ncin
gLo
ad O
verc
urre
nt
Y
/R-G
Seq
uenc
ing
Load
Sho
rt C
ircui
t
G/R
-Y S
eque
ncin
gC
usto
m S
etpo
ints
Upd
ate
G/Y
/R F
lash
ing
Sel
f-tes
t Err
or
R
-Y-G
Seq
uenc
ing
5.0
TRO
UB
LES
HO
OTI
NG
MO
RN
ING
STA
R C
OR
PO
RAT
ION
35
6.05.
2 C
omm
on P
robl
ems
Prob
lem
: No
LED
indi
catio
nsSo
lutio
n: W
ith a
mul
ti-m
eter
, che
ck th
e vo
ltage
at t
he
batte
ry te
rmin
als
on th
e S
S-M
PP
T. B
atte
ry v
olta
ge m
ust b
e at
leas
t 7V
to p
ower
the
SS
-MP
PT.
Prob
lem
: The
SS
-MP
PT
is n
ot c
harg
ing
the
batte
ry.
Solu
tion:
see
Sec
tion
5.1
Err
or In
dica
tions
. If t
he S
tatu
s LE
D is
off,
m
easu
re th
e vo
ltage
acr
oss
the
Sol
ar in
put t
erm
inal
s of
th
e S
S-M
PP
T. In
put v
olta
ge m
ust b
e gr
eate
r tha
n ba
ttery
vo
ltage
. Che
ck fu
ses
and
sola
r wiri
ng c
onne
ctio
ns. C
heck
so
lar a
rray
for s
hadi
ng.
Full
test
ing
docu
men
tatio
n is
ava
ilabl
e on
our
web
site
at:
6.0
The
Sun
Sav
er M
PP
T ch
arge
con
trolle
r is
war
rant
ed to
be
free
from
def
ects
in
mat
eria
l and
wor
kman
ship
for a
per
iod
of F
IVE
(5) y
ears
from
the
date
of
ship
men
t to
the
orig
inal
end
use
r. M
orni
ngst
ar w
ill, a
t its
opt
ion,
repa
ir or
re
plac
e an
y su
ch d
efec
tive
prod
ucts
.
CLA
IM P
RO
CED
UR
EB
efor
e re
ques
ting
war
rant
y se
rvic
e, c
heck
the
Ope
rato
r’s M
anua
l to
be c
erta
in th
at th
ere
is a
pro
blem
with
the
cont
rolle
r. R
etur
n th
e de
fect
ive
prod
uct t
o yo
ur a
utho
rized
Mor
ning
star
dis
tribu
tor w
ith s
hipp
ing
char
ges
prep
aid.
Pro
vide
pro
of o
f dat
e an
d pl
ace
of p
urch
ase.
To o
btai
n se
rvic
e un
der t
his
war
rant
y, th
e re
turn
ed p
rodu
cts
mus
t inc
lude
th
e m
odel
, ser
ial n
umbe
r and
det
aile
d re
ason
for t
he fa
ilure
, the
mod
ule
type
, ar
ray
size
, typ
e of
bat
terie
s an
d sy
stem
load
s. T
his
info
rmat
ion
is c
ritic
al to
a
rapi
d di
spos
ition
of y
our w
arra
nty
clai
m.
Mor
ning
star
will
pay
the
retu
rn s
hipp
ing
char
ges
if th
e re
pairs
are
cov
ered
by
the
war
rant
y.
WA
RR
AN
TY E
XCLU
SIO
NS
AN
D L
IMIT
ATIO
NS
This
war
rant
y do
es n
ot a
pply
und
er th
e fo
llow
ing
cond
ition
s:D
amag
e by
acc
iden
t, ne
glig
ence
, abu
se o
r im
prop
er u
se.
PV
or l
oad
curr
ents
exc
eedi
ng th
e ra
tings
of t
he p
rodu
ct.
Dam
age
occu
rrin
g du
ring
ship
men
t.
THE
WA
RR
AN
TY A
ND
RE
ME
DIE
S S
ET
FOR
TH A
BO
VE
AR
E
EX
CLU
SIV
E A
ND
IN L
IEU
OF
ALL
OTH
ER
S, E
XP
RE
SS
OR
IMP
LIE
D.
MO
RN
ING
STA
R S
PE
CIF
ICA
LLY
DIS
CLA
IMS
AN
Y A
ND
ALL
IMP
LIE
D
WA
RR
AN
TIE
S, I
NC
LUD
ING
, WIT
HO
UT
LIM
ITAT
ION
, WA
RR
AN
TIE
S O
F M
ER
CH
AN
TAB
ILIT
Y A
ND
FIT
NE
SS
FO
R A
PA
RTI
CU
LAR
PU
RP
OS
E.
No
Mor
ning
star
dis
tribu
tor,
agen
t or e
mpl
oyee
is a
utho
rized
to m
ake
any
MO
RN
ING
STA
R IS
NO
T R
ES
PO
NS
IBLE
FO
R IN
CID
EN
TAL
OR
C
ON
SE
QU
EN
TIA
L D
AM
AG
ES
OF
AN
Y K
IND
, IN
CLU
DIN
G B
UT
NO
T LI
MIT
ED
TO
LO
ST
PR
OFI
TS, D
OW
NTI
ME
, GO
OD
WIL
L O
R D
AM
AG
E T
O
EQ
UIP
ME
NT
OR
PR
OP
ER
TY.
1098
Was
hing
ton
Cro
ssin
g R
oad,
Was
hing
ton
Cro
ssin
g, P
A 1
9877
US
AE
mai
l: in
fo@
mor
ning
star
corp
.com
Web
site
: w
ww
.mor
ning
star
corp
.com
7.0
TEC
HN
ICA
L S
PE
CIF
ICAT
ION
SM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N37
7.07.
0
Elec
tric
al
N
omin
al s
yste
m v
olta
ge
12 o
r 24
Vdc
M
ax. b
atte
ry c
urre
nt
15 A
B
atte
ry v
olta
ge ra
nge
7 V
– 3
6 V
M
ax. s
olar
inpu
t vol
tage
75
V
Nom
inal
Max
. Inp
ut P
ower
12 V
olt
200
Wat
ts
24
Vol
t
40
0 W
atts
Sel
f-con
sum
ptio
n
35 m
A
Acc
urac
y
Vo
ltage
1.
0 %
Cur
rent
2.
0 %
M
eter
Con
nect
ion
6-
pin
RJ-
11
Tran
sien
t Sur
ge P
rote
ctio
n
4 x
1500
W
R
egul
atio
n M
etho
d
4 st
age
Te
mp.
Com
pens
ated
Set
poin
ts
A
bsor
ptio
n
Floa
t
Equ
aliz
e
Fa
lling
V
Ris
ing
V
G to
Y
12.1
13.1
Y
to G
Y
to F
lash
R
11.7
12.6
Fl
ash
R to
Y
Flas
h R
to R
11
.5
12
.6
R to
Y
Gel
Sealed
AGM
Flooded
Abs
orpt
ion
Volta
ge14
.0 V
14.1
V14
.3 V
14.4
V
Floa
t Vol
tage
13.7
V13
.7 V
13.7
V13
.7 V
Tim
e un
til F
loat
3 hr
3 hr
3 hr
3 hr
Equ
aliz
e Vo
ltage
N/A
N/A
14.5
V14
.9 V
Equ
aliz
e D
urat
ion
N/A
N/A
3 hr
s3
hrs
Equ
aliz
e C
alen
dar
N/A
N/A
28 days
28 days
Max
. Reg
ulat
ion
Volta
ge1
15 V
/ 30
V
Low
Vol
tage
Dis
conn
ect2
11.5
V /
11.0
V
Low
Vol
tage
Rec
onne
ct2
12.6
V /
12.1
V
1 Not
tem
pera
ture
com
pens
ated
. 15
V @
12
V n
omin
al, 3
0 V
@ 2
4 V
nom
inal
2 Adj
usta
ble
by s
witc
h, n
ot te
mpe
ratu
re c
ompe
nsat
ed. 1
1.0
V /
12.1
V s
ettin
g ca
n be
mod
ified
in c
usto
m s
ettin
gs.
NO
TE: T
empe
ratu
re c
ompe
nsat
ion
incr
ease
s re
gula
tion
Envi
ronm
enta
l
H
umid
ity
100%
N.C
.
Enc
losu
re
IP10
(ind
oor)
7.0
TEC
HN
ICA
L S
PE
CIF
ICAT
ION
SM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N39
7.0M
echa
nica
l
P
ower
term
inal
s w
ire s
ize
(max
.)
S
olid
#6
AW
G /
16 m
m2
Mul
tistra
nd
#6
AW
G /
16 m
m2
Fine
stra
nd
#8
AW
G /
10 m
m2
Term
inal
Dia
met
er
0.21
0 in
/ 5.
4 m
m
Pow
er te
rmin
als
torq
ue (m
ax.)
35
in-lb
/ 4
Nm
RTS
term
inal
s w
ire s
ize
(max
.)
W
ire g
auge
(min
)
#2
2 AW
G /
0.3
mm
2
W
ire g
auge
(max
)
#1
2 AW
G /
3.0
mm
2
RTS
term
inal
s to
rque
(max
.)
0.4
Nm
/ 3.
5 in
-lb
Dim
ensi
ons
see
insi
de fr
ont c
over
W
eigh
t
1.
3 lb
s / 0
.60
kg
Figu
re 1
2. O
utpu
t C
urre
nt v
s. H
eats
ink
Tem
pera
ture
7.0
TEC
HN
ICA
L S
PE
CIF
ICAT
ION
SM
OR
NIN
GS
TAR
CO
RP
OR
ATIO
N41
App
endi
x A
- Wire
Cha
rts
12 V
olt N
omin
al W
ire C
hart
amps
Wire
Gau
ge (A
WG
)W
ire G
auge
(mm
2 )
1412
108
62.0
3.05.0
8.013
.02
7011
218
028
745
621
3455
8713
9
435
5690
143
228
1117
2744
69
818
2845
7211
45
814
2235
1212
1930
4876
46
915
23
159
1524
3861
35
712
19
3% V
olta
ge d
rop,
Ann
eale
d co
pper
wire
at 2
0C
24 V
olt N
omin
al W
ire C
hart
amps
Wire
Gau
ge (A
WG
)W
ire G
auge
(mm
2 )
1412
108
62.0
3.05.0
8.013
.0
214
022
436
057
491
243
6811
017
527
8
470
112
180
286
456
2134
5587
139
836
5690
144
228
1117
2744
69
1224
3860
9615
27
1218
.329
46
1518
3048
7612
25
915
2337
3% V
olta
ge d
rop,
Ann
eale
d co
pper
wire
at 2
0C
36 V
olt N
omin
al W
ire C
hart
amps
Wire
Gau
ge (A
WG
)W
ire G
auge
(mm
2 )
1412
108
62.0
3.05.0
8.013
.0
221
033
654
086
1136
864
102
165
262
417
410
516
827
042
968
432
5182
131
208
854
8413
521
634
216
2641
6610
4
1236
5790
144
228
1117
2744
69
1527
4572
114
183
814
2235
563%
Vol
tage
dro
p, A
nnea
led
copp
er w
ire a
t 20
C
Figu
re 1
3. O
utpu
t C
urre
nt v
s. A
rray
Vol
tage
Spe
cific
atio
ns s
ubje
ct to
cha
nge
with
out n
otic
e.D
esig
ned
in th
e U
.S.A
.A
ssem
bled
in T
aiw
an©
201
0 M
orni
ngst
ar C
orpo
ratio
n
MS
-ZM
AN
-SS
PP
T-C
v02
