Morningstar Sunsaver PWM (Gen 3) Quick start guide

Quick Start Guide

Specifications:

Battery Type Selection:

SS‐6/6L

NominalSystemVoltage 12V

BatteryVoltageRange 6Vto15V

MaximumSolarInputVoltage 30V

MaximumSolarCurrent 6.5A

MaximumLoadCurrent 6A

©2021MorningstarCorporation.AllRightsReserved. MP‐003293SS‐PWM(Gen3)QSG(3/4/2021)RevC01

In the Box:

Mounting

Screws(x4)

Tools Required:

— #2PhilipsScrewdriver

— 3/16(5mm)&3/32"(2.5mm)FlatheadScrewdriver

— Drillwitha3/32"(2.5mm)bit

— Multimeter

Important Safety Information:

WARNING: Shock Hazard

TheSunSaversolarcontrollermustbe

installedbyaqualifiedtechnicianin

accordancewiththeelectrical

regulationsofthecountryofinstallation.

WARNING: Shock Hazard

ThisunitisnotprovidedwithaGFDI

device.Thischargecontrollermustbe

usedwithanexternalGFDIdeviceas

requiredbytheArticle690ofthe

NationalElectricalCodeforthe

installationlocation.

IMPORTANT: READtheSunSaver

InstallationManualforsafetyand

regulatoryinformation,instructionson

configurationandoperation,and

warrantyinformation.

Scan QR Code to go

directly to the

SunSaver Installation

Manual and warranty

information online.

Contact Information:

TechnicalSupport:Support.morningstarcorp.com

Phone:1‐215‐321‐4457

SunSaverSolarChargeController

WarrantyRegistration:https://www.morningstarcorp.com/product‐registration/

BatterySelectJumper

INSERTED

Battery

Select

Jumper

REMOVED

SOLAR CONTROLLER

SS‐10/10L

6Vto15V

10A

SS‐20L

20A

BATTERY SET POINTS

Set Point

AbsorptionVoltage

FloatVoltage

TimeuntilFloat

EqualizeVoltage

12-volt

14.1V

13.7V

3hours

N/A

EqualizeDuration(hours)

EqualizeCalendar(days)

MaximumRegulationVoltage*

N/A

LowVoltageDisconnect(LVD)

LowVoltageReconnect(LVR)

HighVoltageDisconnect(HVD)

HighVoltageReconnect(HVR)

StartupLVD

InstantLVD

24-volt

29.2V

27.4V

29.8V

*Nottemperaturecompensated.15V@12Vnominal,30V@24Vnominal.

12-volt

14.6V

13.7V

14.9V

3hours

28days

24-volt

28.2V

27.4V

15.0V 30.0V15.0V30.0V

AbsorptionDuration 3hours

Sealed Flooded

11.5V 23.0V11.5V23.0V

12.6V 25.2V12.6V25.2V

14V 28V14V28V

11.7V 23.4V11.7V23.4V

10.0V 20.0V10.0V20.0V

15.3V 30.6V15.3V30.6V

30V 60V

12V 24V12V 24V

30V 60V

6Vto30V 6Vto15V 6Vto30V

For Sealed Batteries: For Flooded Batteries:

IMPORTANT:

PulseWidthModulation(PWM)Chargingversus

SlowSwitchingCharging

SeetheSunSaverInstallationManualfordirections

forchangingtheregulationfromPulseWidth

Modulation(PWM)chargingtoSlowSwitching

charging.

SlowSwitchingregulationlimitstheswitching

frequencyto10hz.(maximum),whichcan

eliminatenoiseissuesinsomesystems.

PWMchargingisselectedbydefault.

To Install the Terminal Cover (requiredbyUL/ETLlistedsystems):

1. Removethetwolowerscrewsfrom

thefaceplate.

2. AligntheTerminalCoverover

theholes.

3. InsertthescrewsremovedinStep1and

hand‐tightenusingcarenottoover‐tighten.

IMPORTANT:

TheSunSaverchargingalgorithmiscompatible

withlead‐acidorNiCdbatteries.NiMH,Li‐ion,

andotherbatterychemistriesarenotcompatible

withtheSunSaverchargingalgorithm.

TerminalCover

SS‐6

SS‐6L*

SS‐10

SS‐10L*

SS‐20L*

SunSaver Models:

*Automatic Load Control:

LoadControlautomatically

disconnects

and reconnects system loads based upon

the Low Voltage Disconnect (LVD) and

Low Voltage Reconnect (LVR) voltage

thresholds.

The LVD and LVR thresholds are listed on

Page 4 of this Quick Start Guide.

ThisfeatureisexclusivetomodelsSS‐6L,

SS‐10L,andSS‐20Lonly.

LEGEND

SunSaver Solar Controller

Quick Start Guide

(+)

(–)

(+)

(–)

Solar Disconnect*

(PV GFP required per

NEC 690)

Photovoltaic (PV) Array

Battery / Battery Bank

Battery

Disconnect*

DC Load

Disconnect*

Power UP Sequence:

1. ConnectBattery/BatteryBank.

2. ConnectSolar.

Power DOWN Sequence:

1. DisconnectSolar.

2. DisconnectBattery/BatteryBank.

Mounting:

Minimum Clearance Requirements:

CAUTION: Equipment Damage

DonotexposetheSunSaverCCtoweather.Locatein

adry,protectedareatopreventequipmentdamage.

Ensuretheminimumclearancerequirementsare

followedtoprovideadequateventilationandprevent

theunitfromoverheating.

IMPORTANT: Exampleonly.Actualwiringmayvary.READthe

SunSaverInstallation,Operations,andMaintenanceManualformandatory

safetyrequirements.Allconfigurationmustcomplywithlocalandnational

electriccodes.Consultyourlocalelectricauthoritytoensurecompliance.

Negative (–)

Positive (+)

Ground

SeetheMorningstarPVStringCalculatorat:

http://string‐calculator.morningstarcorp.com/

Component

LoadTerminals

WireSize

(Solid)

#10AWG

5.2mm



(Maximum)

ToolRequired

3/16"(5mm)

FlatheadScrewdriver

BatteryTerminals

WIRING AND TORQUE REQUIREMENTS

Torque

(Maximum)

10.6in‐lbs.

(1.2Nm)

SolarTerminals

Securinghardware

notshown.

WARNING: Explosion Hazard

NeverinstalltheSunSaverinanenclosurewithvented/

floodedbatteries.Batteryfumesareflammableand

willcorrodeanddestroytheSunSavercircuits.Ensure

sufficientventilation.

Step 1: Choose Mounting Location

LocatetheSunSaveronaverticalsurfacewithin10feet(3m)ofthebattery

bankthatisprotectedfromdirectsun,hightemperatures,andwater.

Step 2: Check for Clearance and Ventilation

PlacetheSunSaverinthelocationwhereitwillbemounted.

Verifythatthereissufficientroomtorunwiresandthat

thereisampleroomaboveandbe

lowthecontrollerforairflow.

Step 3: Mark Holes

Useapencilorpentomarkthefour(4)mounting

holelocationsonthemountingsurface.

Step 4: Drill Holes

Removethecontrolleranddrill3/32”(2.5mm)

holesinthemarkedlocations.

Step 5: Secure Controller

Placethecontrolleronthesurfaceandalignthemountingholes

ththedrilledholesinstep4.Securethecontrollerinplace

usingtheMountingscrews(included).

3/32"(2.5mm)

Battery(+)

Battery(—)

WireSize

(multistrand)

#10AWG

5.2mm



(Maximum)

WireSize

(finestrand)

#10AWG

5.2mm



(Maximum)

Recommended

Orderof

Installation

DC Load(s)*

Communications

Security

Lighting

Industrial

Residential

PrimarySystem

Ground

3 1

2"(51mm)

FusesorDisconnects

*Fuseorbreakersizingmustbebasedonrequiredwireampacity.

Ifusingafuse,doNOTinsertthefuseinthefuse‐holderuntilafterallthe

otherconnectionshavebeencompleted.

(+)

(–)

12VdcModule 12VdcModule

30VocMax@12Vbattery/

60Voc@24Vbattery

StatusLED

BatterySOCLEDs

IMPORTANT:

ArrayVoltageshouldNEVERexceed

themaximuminputvoltage.

BATTERY STATE-OF-CHARGE (SOC) LED

Green

Indication

Battery

Status

SOC

LED

FastFlashing(2Flash/sec)

MediumFlashing(1Flash/sec)

SlowFlashing(1Flash/2sec)

ONSolid

EqualizeCharge

Absorption

Charge

FloatCharge

NearlyFull

Load

Status

LoadON

Yellow

Red

ONSolid

Flashing(1Flash/sec)

ONSolid

HalfFull

BatteryLow

BatteryEmpty

LoadON

LVDWarning

(LoadON)

LVD(LoadOFF)

WARNING: Shock Hazard

Fuses,circuitbreakers,anddisconnectswitchesneveropengrounded

systemconductors.OnlyGFDIdevicesarepermittedtodisconnect

groundedconductors.

WARNING: Shock Hazard

Testbetweenallterminalsandgroundbeforetouching.

PoweroraccessoryterminalsareNOTelectricallyisolatedfromDCinput

andmaybeenergizedwithhazardoussolarvoltage.

IMPORTANT:

Ensurethereisonly1 DCNegative‐to‐GroundBondintheentiresystem.

2"(51mm)

STATUS LED

None

Green

Red

Indication

Operating

State

Color

OFF(withheartbeat

)

ONSolid(withheartbeat

)

Flashing

ONSolid(withheartbeat

)

Night

Charging

Error

CriticalError

¹heartbeatindicationflickerstheStatusLEDON brieflyevery5seconds

heartbeatindicationflickerstheStatusLEDOFF brieflyevery5seconds

(12-volt or 24-volt*)

*SunSaverModelDependent

WARNING: Shock Hazard

ThesolarPVarraycanproduceopen‐circuit

voltagesinexcessof40Vdcwheninsunlight.

Verifythatthesolarinputbreakeror

disconnecthasbeenopened(disconnected)

beforeinstallingthesystemwires.

None NoLEDsON BatteryMissing LoadOFF

Morningstar Sunsaver PWM (Gen 3) Quick start guide

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