TriStar TRAKSTAR TS-MPPT-45 User manual

Installation, Operation and Maintenance Manual
Solar Charging System Controller
www.morningstarcorp.com
Solar Battery Charger
With
TrakStarTM Maximum Power Point Tracking Technology
MODELS
TS-MPPT-30
TS-MPPT-45
TS-MPPT-60
TS-MPPT-60M
MAXIMUM POWER POINT TRACKING
TRISTAR MPPT
TM
For the most recent manual revisions, see the version at:
www.morningstarcorp.com

Dimensions in Inches [Millimeters] TABLE OF CONTENTS
1.0 Important Safety Instructions 4
2.0 Getting Started 10
2.1 Overview 10
2.2 Versions and Ratings 10
2.3 Features 11
2.4 Regulatory Information 13
2.5 Optional Accessories 14
3.0 Installation 16
3.1 General Information 16
3.2 Controller Installation 18
4.0 Operation 34
4.1 TrakStarTM MPPT Technology 34
4.2 Battery Charging Information 36
4.3 Push-button 43
4.4 LED Indications 44
4.5 Protections, Faults & Alarms 46
4.6 Inspection and Maintenance 49
5.0 Networking and Communication 51
5.1 Introduction 51
5.2 Morningstar MeterBusTM 52
5.3 Serial RS-232 53
5.4 EIA-485 (formerly RS-485) 55
5.5 Ethernet 56
6.0 Troubleshooting 59
7.0 Warranty and Claim Procedure 61
8.0 Specications 63
9.0 Certications 73

5TriStar MPPT Operator’s Manual4Important Safety Instructions
Informations de Sécurité
• Lisez toutes les instructions et les avertissements gurant dans le manuel avant de com-
mencer l’installation.
• Le TriStar MPPT 150V ne contient aucune pièce réparable par l’utilisateur. Ne démontez
pas ni ne tentez de réparer le contrôleur.
AVERTISSEMENT: RISQUE DE CHOC ÉLETRIQUE.
NON ALIMENTATION OU AUX BORNES D’ACCESSOIRES SONT ISOLÉS ÉLEC-
TRIQUEMENT DE L’ENTRÉE DE C.C ET DOIT ÊTRE ALIMENTÉS À UNE TENSION DAN-
GEREUSE SOLAIRE. SOUS CERTAINES CONDITIONS DE DÉFAILLANCE, LA BATTERIE
POURRAIT DEVENIR TROP CHARGÉE. TEST ENTRE TOUTES LES BORNES ET LA MASSE
AVANT DE TOUCHER.
External solaire et la batterie se déconnecte sont nécessaires.
• Déconnectez toutes les sources d’alimentation du contrôleur avant d’installer ou de régler
le TriStar MPPT 150V.
• Le TriStar MPPT ne contient aucun fusible ou interrupteur. Ne tentez pas de réparer.
• Installez des fusibles/coupe-circuits externes selon le besoin.
Installation Safety Precautions
WARNING:
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.
• Mount the TriStar MPPT 150V indoors. Prevent exposure to the elements and do not allow
water to enter the controller.
• Install the TriStar MPPT 150V in a location that prevents casual contact. The
TriStar MPPT 150V heatsink can become very hot during operation.
• Use insulated tools when working with batteries.
• Avoid wearing jewelry during installation.
• The battery bank must be comprised of batteries of same type, make, and age.
• Do not smoke near the battery bank.
• Power connections must remain tight to avoid excessive heating from a loose connection.
• Use properly sized conductors and circuit interrupters.
• The grounding terminal is located in the wiring compartment and is identied by the
symbol below.
Ground Symbol
SAVE THESE INSTRUCTIONS.
This manual contains important safety, installation and operating instructions for the
TriStar MPPT 150V solar controller. The following symbols are used throughout this manual to
indicate potentially dangerous conditions or mark important safety instructions:
WARNING:
Indicates a potentially dangerous condition. Use extreme caution
when performing this task.
!
CAUTION:
Indicates a critical procedure for safe and proper operation of the
controller.
NOTE:
Indicates a procedure or function that is important for the safe and
proper operation of the controller.
AVERTISSEMENT :
Indique une condition potentiellement dangereuse. Faites preuve
d’une prudence extrême lors de la réalisation de cette tâche.
!
PRUDENCE :
Indique une procédure critique pour l’utilisation sûre et correcte du
contrôleur.
REMARQUE :
Indique une procédure ou fonction importante pour l’utilisation sûre et
correcte du contrôleur.
Safety Information
• Read all of the instructions and cautions in the manual before beginning installation.
• There are no user serviceable parts inside the TriStar MPPT 150V. Do not disassemble
or attempt to repair the controller.
WARNING: RISK OF ELECTRICAL SHOCK.
NO POWER OR ACCESSORY TERMINALS ARE ELECTRICALLY ISOLATED FROM
DC INPUT, AND MAY BE ENERGIZED WITH HAZARDOUS SOLAR VOLTAGE. UNDER CER-
TAIN FAULT CONDITIONS, BATTERY COULD BECOME OVER-CHARGED. TEST BETWEEN
ALL TERMINALS AND GROUND BEFORE TOUCHING.
• External solar and battery disconnects are required.
• Disconnect all sources of power to the controller before installing or adjusting the
TriStar MPPT 150V.
• There are no fuses or disconnects inside the TriStar MPPT 150V Do not attempt to repair.
1.0 Important Safety Instructions

7TriStar MPPT Operator’s Manual
6Important Safety Instructions
• Ce contrôleur de charge ne doit être connecté qu’à des circuits en courant continu. Ces connex-
ions CC sont identiées par le symbole ci-dessous:
Le contrôleur TriStar MPPT 150V doit être installé par un technicien qualié conformément aux
règlementations électriques du pays où est installé le produit.
Un moyen d’assurer la déconnexion de tous les pôles de l’alimentation doit être fourni. Cette décon-
nexion doit être incorporée dans le câblage xe.
À l’aide de la borne de mise à la masse du TriStar MPPT 150V (dans le compartiment de câblage),
un moyen permanent et able de mise à la terre doit être fourni. La xation de la mise à la terre doit
être xée contre tout desserrage accidentel.
Les ouvertures d’entrée au compartiment de câblage du TriStar MPPT 150V doivent être
protégées avec un conduit ou une bague.
Battery Safety
WARNING: A battery can present a risk of electrical shock or burn from large amounts
of short-circuit current, re, or explosion from vented gases. Observe proper precautions.
AVERTISSEMENT: Une batterie peut présenter a ris que de choc électrique ou de brûlure
de grandes quantités de court-circuit curlouer, incendie ou explosion de ventilé gaz.
Observer précautions appropriées.
WARNING: Risk of Explosion.
Proper disposal of batteries is required. Do not dispose of batteries in re. Refer to
local regulations or codes for requirements.
AVERTISSEMENT: Risque d’Explosion.
Au rebut des piles est nécessaire. Ne pas jeter les piles dans le feu. Se référer aux régle
mentations locales ou des codes pour les exigences.
CAUTION: When replacing batteries, proper specied number, sizes types and ratings
based on application and system design
PRUDENCE: Lorsque le remplacement des piles, utilisez correctement nombre spécifié,
tailles, types et les évaluations basées sur conception de système et d’application.
CAUTION: Do not open or mutilate batteries. Released electrolyte is harmful to skin,
and may be toxic.
PRUDENCE: Ne pas ouvrir ou mutiler les piles. L’électrolyte est nocif pour la peau et
peut être toxique.
• This charge controller is to be connected to DC circuits only. These DC connections are identied
by the symbol below:
Direct Current Symbol
The TriStar MPPT 150V controller must be installed by a qualified technician in accordance with the
electrical regulations of the country where the product is installed. A means of disconnecting all
power supply poles must be provided. These disconnects must be incorporated in the fixed wiring.
A permanent, reliable earth ground must be established with connection to the wiring compartment
ground terminal.
The grounding conductor must be secured against any accidental detachment. The knock-outs in
the wiring compartment must protect wires with conduit or rubber rings.
Précautions de Sécurité D’installation
AVERTISSEMENT: L’appareil n’est pas fourni avec un dispositif GFDI. Ce
contrôleur de charge doit être utilisé avec un dispositif GFDI externe tel que requis
par l’Article 690 du Code électrique national de l’emplacement de l’installation.
• Montez le TriStar MPPT 150V à l’intérieur. Empêchez l’exposition aux éléments et la pénétration
d’eau dans le contrôleur.
• Installez le TriStar MPPT 150V dans un endroit qui empêche le contact occasionnel. Le dissipateur
de chaleur peut devenir très chaud pendant le fonctionnement.
• Utilisez des outils isolés pour travailler avec les batteries.
• Évitez le port de bijoux pendant l’installation.
• Le groupe de batteries doit être constitué de batteries du même type, fabricant et âge.
• Ne fumez pas à proximité du groupe de batteries.
• Les connexions d’alimentation doivent rester serrées pour éviter une surchauffe excessive d’une
connexion desserrée.
• Utilisez des conducteurs et des coupe-circuits de dimensions adaptées.
• La borne de mise à la terre se trouve dans le compartiment de câblage et est identiée par le
symbole ci-dessous estampillé dans le boit:

9TriStar MPPT Operator’s Manual
8Important Safety Instructions
• Servicing of batteries should be performed, or supervised, by personnel knowledgeable about
batteries, and the proper safety precautions.
• Be very careful when working with large lead-acid batteries. Wear eye protection and have fresh
water available in case there is contact with the battery acid.
•Remove watches, rings, jewelry and other metal objects before working with batteries.
• Wear rubber gloves and boots
•Use tools with insulated handles and avoid placing tools or metal objects on top of batteries.
• Disconnect charging source prior to connecting or dis-connecting battery terminals.
• Determine if battery is inadvertently grounded. If so, remove the source of contact with ground.
Contact with any part of a grounded battery can result in electrical shock. The likelihood of such
a shock can be reduced if battery grounds are removed during installation and maintenance
(applicable to equipment and remote battery supplies not having a grounded supply circuit).
•Carefully read the battery manufacturer’s instructions before installing / connecting to, or removing
batteries from, the TriStar MPPT.
•Be very careful not to short circuit the cables connected to the battery.
•Have someone nearby to assist in case of an accident.
•Explosive battery gases can be present during charging. Be
certain there is enough ventilation to
release the gases.
•Never smoke in the battery area.
• If battery acid comes into contact with the skin, wash with
soap and water. If the acid contacts the
eye, ood with fresh water and get medical attention.
•Be sure the battery electrolyte level is correct before starting charging. Do not attempt to charge a frozen
battery.
•Recycle the battery when it is replaced.
• Entretien des batteries devrait être effectué ou supervisé, par un personnel bien informé sur les
piles et les précautions de sécurité appropriées.
• Soyez très prudent quand vous travaillez avec des grandes batteries au plomb. Portez des lunettes
de protection et ayez de l’eau fraîche à disposition en cas de contact avec l’électrolyte.
• Enlevez les montres, bagues, bijoux et autres objets mé talliques avant de travailler avec des piles.
• Porter des bottes et des gants de caoutchouc
• Utiliser des outils avec poignées isolantes et évitez de placer des outils ou des objets métalliques
sur le dessus de batteries.
• Débrancher la source de charge avant de brancher ou dis-reliant les bornes de la batterie.
• Utilisez des outils isolés et évitez de placer des objets métalliques dans la zone de travail.
• Déterminer si batterie repose par inadvertance. Dans l’afrmative, supprimer la source du contact
avec le sol. Contact avec n’importe quelle partie d’une batterie mise à la terre peut entraîner un
choc électrique. La probabilité d’un tel choc peut être réduite si des motifs de batterie sont suppri-
més pendant l’installation et maintentretien (applicable à l’équipement et les fournitures de pile de
la télécommande n’ayant ne pas un circuit d’alimentation mise à la terre *).
• Lisez attentivement les instructions du fabricant de la batterie avant d’installer / connexion à ou
retrait des batteries du TriStar MPPT.
• Veillez à ne pas court-circuiter les câbles connectés à la batterie.
• Ayez une personne à proximité qui puisse aider en cas d’accident.
• Des gaz explosifs de batterie peuvent être présents pendant la charge. Assurez-vous qu’une venti-
lation sufsante évacue les gaz.
• Ne fumez jamais dans la zone des batteries
• En cas de contact de l’électrolyte avec la peau, lavez avec du savon et de l’eau. En cas de contact
de l’électrolyte avec les yeux, rincez abondamment avec de l’eau fraîche et consultez un médecin.
• Assurez-vous que le niveau d’électrolyte de la batterie est correct avant de commencer la charge.
Ne tentez pas de charger une batterie gelée.
• Recyclez la batterie quand elle est remplacée.
About this Manual
This manual provides detailed installation and usage instructions for the TriStar MPPT 150V
controller. Only qualied electricians and technicians who are familiar with solar system design
and wiring practices should install the TriStar MPPT 150V. The usage information in this manual
is intended for the system owner/operator.

11TriStar MPPT Operator’s Manual10 Getting Started
Getting Started2.0
2.1 Overview
Thank you for selecting the TriStar MPPT 150V solar charge controller with TrakStarTM MPPT
Technology. The TriStar MPPT 150V (TS-MPPT) is an advanced maximum power point tracking
solar battery charger. The controller features a smart tracking algorithm that nds and maintains
operation at the solar array peak power point, maximizing energy harvest.
The TriStar MPPT 150V battery charging process has been optimized for long battery life and
improved system performance. Self-diagnostics and electronic error protections prevent damage
when installation mistakes or system faults occur. The controller also features eight (8) adjustable
settings switches, several communication ports, and terminals for remote battery temperature
and voltage measurement.
Please take the time to read this operator’s manual and become familiar with the controller. This
will help you make full use of the many advantages the TriStar MPPT 150V can provide for your
PV system.
2.2 Versions and Ratings
There are four versions of TriStar MPPT 150V controller:
TriStar-MPPT-30
• maximum 30 amps continuous battery current
• 12, 24 and 48 Volt dc systems
• maximum 150 Volt dc solar input voltage
• RS-232 and MeterBusTM communication ports
TriStar-MPPT-45
• maximum 45 amps continuous battery current
• 12, 24 and 48 Volt dc systems
• maximum 150 Volt dc solar input voltage
• RS-232 and MeterBusTM communication ports
TriStar-MPPT-60
• maximum 60 amps continuous battery current
• 12, 24 and 48 Volt dc systems
• maximum 150 Volt dc solar input voltage
• RS-232, EIA-485, MeterBusTM, and Ethernet communication ports
TriStar-MPPT-60M
• maximum 60 amps continuous battery current
• 12, 24 and 48 Volt dc systems
• maximum 150 Volt dc solar input voltage
• RS-232, EIA-485, MeterBusTM, and Ethernet communication ports
• Includes on-board meter display
2.3 Features
The features of the TriStar MPPT 150V are shown in Figure 2-1 below. An explanation of each
feature is provided.
12
11
13
9
16
15
3
2
1
17
4
5
8
6
14
10 7
Figure 2-1. TriStar MPPT 150V features

13TriStar MPPT Operator’s Manual
12 Getting Started
1 - Heatsink
Aluminum heatsink to dissipate controller heat
2 - Mounting Hanger
Keyhole slot for mounting
3 - Settings Switches
Eight (8) settings switches to congure operation of the TriStar MPPT 150V
4 - Battery Positive Terminal (red)
Power connection for Battery (+)
5 - Remote Temperature Sensor Terminals
Connection point for a Morningstar RTS (optional) to remotely monitor battery temperature
6 - LED Indicators
Three state of charge (SOC) LED indicators show charging status and controller faults
7 - MeterBusTM Port
RJ-11 socket for Morningstar MeterBusTM network connections
8 - Battery Voltage Sense Terminals
Terminals for battery voltage input provide accurate battery voltage measurement
9 - Ground Terminal
A chassis ground terminal for system grounding
10 - Ethernet Port
RJ-45 socket for LAN/internet connections (TS-MPPT-60 model only)
11 - Wiring Box with Conduit Knockouts
Termination points for wiring conduit and wire glands
12 - Wiring Box Cover
Sheet metal wiring box cover protects power connections
13 - Serial RS-232 Port
9-pin serial connector (female)
14 - EIA-485 Port
Four (4) position screw terminal for EIA-485 bus connections (TS-MPPT-60 model only)
15 - Solar Positive Terminal (yellow)
Power connection for Solar (+)
16 - Common Negative Power Terminals
Two (2) negative terminals for negative system cable termination
17 - Push-button Switch
Manually reset from an error or fault, also used to start/stop a manual equalization.
2.4 Regulatory Information
NOTE:
This section contains important information for safety and
regulatory requirements.
The TriStar MPPT 150V controller should be installed by a qualied technician according to the
electrical rules of the country in which the product will be installed.
TriStar MPPT 150V controllers comply with the following EMC standards:
• Immunity: EN61000-6-2:1999
• Emissions: EN55022:1994 with A1 and A3 Class B1
• Safety: EN60335-1 and EN60335-2-29 (battery chargers)
A means shall be provided to ensure all pole disconnection from the power supply. This discon-
nection shall be incorporated in the xed wiring.
Using the TriStar MPPT 150V grounding terminal (in the wiring compartment), a permanent and
reliable means for grounding shall be provided. The clamping of the earthing shall be secured
against accidental loosening.
The entry openings to the TriStar MPPT 150V wiring compartment shall be protected with conduit
or with a bushing.
FCC requirements:
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
Changes or modications not expressly approved by Morningstar for compliance could void the user’s authority to
operate the equipment.
Note:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15
of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a resi-
dential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference to radio communication. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment on and off, the user
is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numerique de la classe B est conforme a la norme NMB-003 du Canada.

15TriStar MPPT Operator’s Manual
14 Getting Started
2.5 Optional Accessories
The following accessories are available for purchase separately from your authorized
Morningstar dealer:
TriStar Digital Meter 2 / TriStar Remote Meter 2 (Models: TS-M-2 / TS-
RM-2)
The TriStar Digital Meter mounts directly on the TS-MPPT controller, replacing the wiring box
cover. The TriStar Remote Meter can be ush mounted in a wall or into a standard duplex (2-
gang) electrical box. A2 x 16 character display shows system operating information, error indica-
tions, and self-diagnostic information. Four (4) buttons make navigating the meter menus easy.
For systems where multiple TS-MPPT controllers are networked together, one (1) meter can
display full system information. The TriStar meters connect to the RJ- 11 MeterBusTM port on the
TriStar-MPPT.
Meter Hub (HUB-1)
A Morningstar MeterBusTM network with multiple controllers requires a Meter Hub for electri-
cal isolation. The HUB-1 allows communication between MeterBusTM compatible Morningstar
products, including the TriStar MPPT 150V controller. DIN rail compatible. See section 5.2 for
more details.
Relay Driver (RD-1)
The Relay DriverTM accessory enables the TriStar MPPT 150V to control external devices. Four
(4) relay control ports can be congured (in various combinations) to perform the following tasks:
• generator control (2-, 3-, and 4-wire congurations)
• dry contacts for alarms and other signals
• advanced load control
• vent fan control
• DIN rail compatible or surface mount
For more information on the Relay Driver, visit our website at www.morningstarcorp.com or in-
quire with your local Morningstar dealer.
EIA-485 / RS-232 Communications Adapter (RSC-1)
Connect one or more TriStar MPPT 150V controllers to a PC or to other serial devices using the
RSC-1 EIA-485 adapter. The adapter converts an RS-232 serial interface to EIA-485 compliant
signals. An LED shows network activity and errors. DIN rail compatible.
Ethernet Meterbus Converter (EMC-1)
The EMC-1 acts as an Ethernet gateway that serves MODBUS IP, local Web pages, and Web
Monitoring Services. Note that the Web Monitoring Service is not currently available. The
EMC-1 supports any product with a MeterBus port by bridging MODBUS TCP/IP requests
between an Ethernet connection and a connected Morningstar device.

17TriStar MPPT Operator’s Manual16 Installation
3.1 General Information
The mounting location is important to the performance and operating life of the controller. The
environment must be dry and protected from water ingress. If required, the controller may be
installed in a ventilated enclosure with sufcient air ow. Never install the TriStar MPPT 150V in
a sealed enclosure. The controller may be mounted in an enclosure with sealed batteries, but
never with vented/ooded batteries. Battery fumes from vented batteries will corrode and destroy
the TriStar MPPT 150V circuits.
Multiple TriStars can be installed in parallel on the same battery bank to achieve higher charging
current. Additional parallel controllers can also be added in the future. Each TriStar MPPT 150V
must have its own solar array.
WARNING: Installation must conform to all requirements of the US National Electrical
Code and the Canadian Electrical Code.
AVERTISSEMENT: Installation doit être conforme à toutes les requirments US
National Electrical Code et Code Canadien d’Electricité.
!
CAUTION: Equipment Damage or Risk of Explosion
Never install the TriStar MPPT 150V in an enclosure with vented/ooded
batteries. Battery fumes are ammable and will corrode and destroy the
TriStar MPPT 150V circuits.
!
CAUTION: Equipment Damage
When installing the TriStar MPPT 150V in an enclosure, ensure sufcient
ventilation. Installation in a sealed enclosure will lead to over-heating and
a decreased product lifetime.
PRUDENCE : Endommagement de l’équipement ou risque
d’explosion
N’installez jamais le TriStar MPPT 150V dans une enceinte avec des
batteries à évent/à électrolyte liquide. Les vapeurs des batteries sont
inammables et corroderont et détruiront les circuits du TriStar MPPT
150V.
PRUDENCE : Endommagement de l’équipement
Assurez une ventilation sufsante en cas d’installation du TriStar MPPT
150V dans une enceinte. L’installation dans une enceinte hermétique
entraîne une surchauffe et une réduction de la durée de vie du produit.
The installation is straight-forward, but it is important each step is done correctly and safely. A
mistake can lead to dangerous voltage and current levels. Be sure to carefully follow each
instruction in this section. Read all instructions rst before beginning installation.
The installation instructions are for installation of a negative grounded system. National Electrical
Code (NEC) requirements are noted on occasion for convenience, however the installer should
have a complete understanding of NEC and UL requirements for photovoltaic installations.
!
!
Installation3.0 • Read through the entire installation section rst before beginning installation.
• Be very careful when working with batteries. Wear eye protection. Have fresh water available to
wash and clean any contact with battery acid.
• Use insulated tools and avoid placing metal objects near the batteries.
• Explosive battery gases may be present during charging. Be certain there is sufcient ventilation
to release the gases.
• Do not install in locations where water can enter the controller.
• Loose power connections and/or corroded wires may result in resistive connections that melt
wire insulation, burn surrounding materials, or even cause re. Ensure tight connections and use
cable clamps to secure cables and prevent them from swaying in mobile applications.
• Stranded wires to be connected to the terminals should be prepared rst with e.g. clamped
copper heads, tinned-wire ends, etc. to avoid the possibility of one conductor free out of the
connection screw, and possible contact with the metal enclosure.
• Preset charging proles are generally designed for lead acid batteries. Custom settings can be
used for varied charging requirements (see sections 3.2 and 4.2 for details). Note that some
battery types may not be compatible.
• The TriStar MPPT 150V battery connection may be wired to one battery, or a bank of batteries.
The following instructions refer to a singular battery, but it is implied that the battery connection
can be made to either one battery or a group of batteries in a battery bank.
• The TriStar MPPT 150V uses stainless steel fasteners, an anodized aluminum heat sink, and
conformal coating to protect it from harsh conditions. However, for acceptable service life, ex-
treme temperatures and marine environments should be avoided.
• The TriStar MPPT 150V prevents reverse current leakage at night, so a blocking diode is not
required in the system.
• Solar and battery fuses or DC breakers are required in the system. These protection devices are
external to the TriStar MPPT 150V controller, and must be a maximum of 45 amps for the TS-
MPPT-30. 70 amps for the TS-MPPT 45 and 90 amps for the TS-MPPT-60.
• Maximum battery short-circuit current rating must be less than the interrupt current rating of the
battery over-current protection device referenced above.
Recommended Tools:
• Wire strippers
• Wire cutters
• #2 & #0 Phillips screwdriver
• slotted screwdrivers
• Pliers
• Drill
• 3/32” (2.5 mm) drill bit
• Level
• hack saw (cutting conduit)

19TriStar MPPT Operator’s Manual
18 Installation
3.2 Controller Installation
Step 1 - Remove the wiring box cover
!
CAUTION: Shock Hazard
Disconnect all power sources to the controller before removing the wiring box cover. Never
remove the cover when voltage exists on any of the TriStar MPPT 150V power connections.
!
PRUDENCE : Risque de décharge électrique
Déconnectez toutes les sources d’alimentation du contrôleur avant d’enlever le couvercle
du boîtier de câblage. Ne retirez jamais le couvercle en présence de tension sur une des
connexions d’alimentation du TriStar MPPT.
Use a #2 Phillips screw driver to remove the four (4) screws that secure the wiring box cover as
shown in gure 3-1 below.
Figure 3-1. Remove the wiring box cover.
If a TriStar Digital Meter 2 display is installed, be sure to disconnect the RJ-11 cable.
Step 2 - Remove the Knock-Outs
Knockouts are provided for routing cables through conduit or wire glands. Table 3-1 below pro-
vides the knockout sizes and quantity on the TriStar MPPT 150V wiring box. Knockout locations
and dimensions are on the inside front cover.
Quantity Trade Size Hole Dimension
8 1/2” or M20 7/8” (22.2 mm)
6 1 “ 1 - 23/64 “ (34.5 mm)
4 1 - 1/4 “ 1 - 23/32 “ (43.7 mm)
Table 3-1. Knockout sizes
!
CAUTION: Shock Hazard
Always use bushings, connectors, clamp connectors, or wire glands in the knockout openings to
protect wiring from sharp edges.
!
PRUDENCE : Risque de décharge électrique
Utilisez toujours des bagues, des connecteurs, des raccordements à collets ou des fouloirs dans
les ouvertures an de protéger le câblage des bords coupants.
!
CAUTION: Shock Hazard
Never route network cables in the same conduit as the power conductors.
!
PRUDENCE : Risque de décharge électrique
N’acheminez jamais les câbles réseau dans le même conduit que les conducteurs
d’alimentation.
Plan the routing of each conductor that will connect to the TriStar MPPT 150V before removing
any knockouts. The 1/2” (M20) knockouts are ideal for routing network cables, which must be
placed in separate conduit.

21TriStar MPPT Operator’s Manual
20 Installation
Step 3 - Mount to a Vertical Surface
!
CAUTION: Risk of Burns
Install the TriStar MPPT 150V in a location that prevents casual contact. The
TriStar MPPT 150V heatsink can become very hot during operation.
M6 Screw
Mounting Hanger
Figure 3-2. Attaching the mounting hanger
1. Attach the mounting hanger to the bottom of the TriStar MPPT 150V with the M6 screw pro-
vided as shown in gure 3-2.
2. Place the TriStar MPPT 150V on a vertical surface protected from direct sun, high tempera-
tures, and water. The TriStar MPPT 150V requires at least 6” (150 mm) of clearance above
and below and at least 1” (25 mm) on each side for proper air ow as shown in gure 3-3
below.
AT LEAST
6” (150 mm)
COOL AIR
WARM AIR
AT LEAST
6” (150 mm)
AT LEAST
1” (25 mm)
Figure 3-3. Required mounting clearance for air ow.
3. Place a mark on the mounting surface at the top of the keyhole.
4. Remove the controller and drill a 3/32” (2.5 mm) hole at the drill mark.
5. Insert a #10 screw (included) into the top pilot hole. Do not tighten the screw completely.
Leave a 1/4” (6 mm) gap between the mounting surface and screw head.
6. Carefully align the keyhole on the TriStar MPPT 150V with the screw head. Slide the
TriStar MPPT 150V down over the keyhole.
7. Check for vertical plumb with a level.
8. Mark two (2) mounting hole locations in the wiring box.
9. Remove the controller and drill 3/32” (2.5 mm) holes at the drill marks.
10.Carefully align the keyhole on the TriStar MPPT 150V with the screw head. Slide the
TriStar MPPT 150V down over the keyhole.
11. The pre-drilled pilot holes should align with the mounting holes in the wiring box. Secure the
controller with two (2) #10 mounting screws.
12.Tighten the keyhole screw.
Step 4 - Adjust Settings Switches
Switch 1: Reserved for Future Use
Settings switch 1 should remain in the “OFF” position.
Mode Switch 1
Solar Charging OFF
future use ON
Switches 2 & 3: System Voltage
Four (4) system voltage congurations are available as shown in the table below:
System Voltage Switch 2 Switch 3
Auto OFF OFF
12 OFF ON
24 ON OFF
48 ON ON
The “auto” setting allows the TriStar MPPT 150V to detect the system voltage automatically on
start up. The test is only performed at start up and the detected system voltage will never change
during operation.
Generally, it is best to choose a specic system voltage. The auto detect feature should only be
used in situations where the system voltage is unknown ahead of time or in systems where the
system voltage may change periodically.

23TriStar MPPT Operator’s Manual
22 Installation
Switches 4, 5, & 6: Battery Charging Settings
It is important to select the battery type that matches the system battery to ensure proper charg-
ing and long battery life. Refer to the specications provided by the battery manufacturer and
choose a setting that best ts the recommended charging prole.
Settings
Switches
4 - 5 - 6
Battery
Type Absorp. Stage
(Volts)
Float
Stage
(Volts)
Equalize
Stage
(Volts)
Equalize
Interval
(Days)
off-off-off 1 - Gel 14.00 13.70
off-off-on 2 - Sealed* 14.15 13.70 14.40 28
off-on-off 3 - Sealed* 14.30 13.70 14.60 28
off-on-on 4 - AGM/Flooded 14.40 13.70 15.10 28
on-off-off 5 - Flooded 14.60 13.50 15.30 28
on-off-on 6 - Flooded 14.70 13.50 15.40 28
on-on-off 7 - L-16 15.40 13.40 16.00 14
on-on-on 8 - Custom Custom Custom Custom Custom
* “Sealed” battery type includes gel and AGM batteries
All settings are for 12 Volt nominal systems. Multiply the charge voltage settings by 2 for 24 Volt
systems or by 4 for 48 Volt systems. A description of each setting is provided below. See sec-
tion 4.3 for full details on battery charging and a description of each of the settings in the battery
charging table.
Battery Type - The most common battery type associated with the specied charging settings.
Absorption Stage - This stage limits input current so that theAbsorption voltage is maintained.
As the battery becomes more charged, the charging current continues to taper down until the
battery is fully charged.
Float Stage - When the battery is fully charged, the charging voltage will be reduced to the Float
voltage setting.
Equalize Stage - During an equalization cycle, the charging voltage will be held constant at the
specied voltage setting.
Equalize Interval - The number of days between equalization charges when the controller is con-
gured for automatic equalizations (settings switch 7).
Switch 7: Battery Equalization
Choose between manual and automatic battery equalization charging. In the manual equaliza-
tion setting, an equalization will only occur when manually started with the push-button or when
requested from the equalize menu on the TriStar meter. Automatic equalization will occur accord-
ing to the battery program specied by settings switches 4, 5, & 6 in the previous step.
In both settings (auto and manual), the push-button can be used to start and stop battery equal-
ization. If the selected battery charging setting does not have an equalization stage an equaliza-
tion will never occur, even if requested manually.
Equalize Switch 7
manual OFF
automatic ON
Switch 8: Ethernet Security
The Ethernet Security switch enables or disables conguration of the TriStar MPPT 150V settings
through the Ethernet connection. When switch eight is set to disabled, write commands to the
TriStar MPPT 150V custom memory are not allowed. This a safety feature to prevent unintended
changes to custom settings, but it is not a replacement for proper network security.
Conguration via TCP/IP Switch 8
disabled OFF
enabled ON
NOTE:
Adjustment of network settings and custom set-points is always enabled via the
RS-232 and EIA-485 connections. The Ethernet Security switch only enables/
disables remote conguration via TCP/IP.
!
CAUTION: Risk of Tampering
The Ethernet Security settings switch does not block write commands to devices
bridged via EIA-485.
REMARQUE :
Le réglage des paramètres de réseau et des points de consignes personnalisés
est toujours activé par les connexions RS-232 et EIA-485. Le contacteur de
sécurité Ethernet n’active/désactive que la conguration à distance par TCP/IP.
!
PRUDENCE : Risque de tentative d’altération
Le contacteur des paramètres de sécurité Ethernet ne bloque pas les
commandes d’écriture sur les dispositifs reliés par EIA-485.

25TriStar MPPT Operator’s Manual
24 Installation
Step 5 - Remote Temperature Sensor
The included Remote Temperature Sensor (RTS) is recommended for effective temperature com-
pensated charging. Connect the RTS to the 2-position terminal located between the battery (+)
terminal lug and the LED stack (see gure 2-1). The RTS is supplied with 33 ft (10 m) of 22 AWG
(0.34 mm2) cable. There is no polarity, so either wire (+ or -) can be connected to either screw
terminal. The RTS cable may be pulled through conduit along with the power wires. Tighten the
connector screws to 5 in-lb (0.56 Nm) of torque. Separate installation instructions are provided
inside the RTS bag.
WARNING: Risk of Fire.
If no Remote Temperature Sensor (RTS) is connected, use the TriStar MPPT 150V
within 3m (10 ft) of the batteries. Internal Temperature Compensation will be used if
the RTS is not connected. Use of the RTS is strongly recommended.
AVERTISSEMENT : Risque d’incendie.
Si non Capteur de température distant (RTS) est connecté, utilisez le MPPT ProStar
moins de 3m (10 pi) de les batteries. Compensation de la température interne sera
utilisée si la RTS n’est pas connecté. Utilisation de la RTS est fortement recommandé.
!
CAUTION:
The TriStar MPPT 150V will not temperature compensate charging parameters if
the RTS is not used.
!
CAUTION: Equipment Damage
Never place the temperature sensor inside a battery cell. Both the RTS and the
battery will be damaged.
NOTE:
The RTS cable may be shortened if the full length is not needed. Be sure to
reinstall the ferrite choke on the end of the RTS if a length of cable is removed.
This choke ensures compliance with electromagnetic emissions standards.
!
PRUDENCE:
Le TriStar MPPT 150V ne compense pas la température des paramètres de
charges si le RTS n’est pas utilisé.
!
PRUDENCE : Endommagement de l’équipement
Ne placez jamais la sonde de température dans un élément de batterie. Le RTS
et la batterie seraient endommagés.
REMARQUE :
Le câble de RTS peut être raccourci si la totalité de la longueur n’est pas
nécessaire. Assurez-vous de réinstaller la bobine en ferrite sur l’extrémité du
RTS si une longueur de câble est enlevée. Cette bobine assure la conformité
avec les normes d’émissions électromagnétiques.
Step 6 - Grounding and Ground Fault Interruption
WARNING:
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.
NOTE:
Conductors identied by the colors green or green/yellow should only be used
for earthing conductors.
AVERTISSEMENT :
L’appareil n’est pas fourni avec un dispositif GFDI. Ce contrôleur de
charge doit être utilisé avec un dispositif GFDI externe tel que requis par
l’Article 690 du Code électrique national de la région de l’installation.
Use a copper wire to connect the grounding terminal in the wiring box to earth ground. The
grounding terminal is identied by the ground symbol shown below that is stamped into the wiring
box just below the terminal:
Figure 3-4. Ground Symbol
Do not connect the system negative conductor to this terminal. NEC requires the use of an
external ground fault protection device (GFPD). The TriStar MPPT 150V does not have internal
ground fault protection. The system electrical negative should be bonded through a GFPD to
earth ground at one (and only one) location. The grounding point may be located in the solar
circuit or the battery circuit.
Per NEC 690.45 (A) and NEC Table 250.122, minimum sizes for copper grounding wire are:
• TS-MPPT-30 10 AWG (5 mm2)
• TS-MPPT-45 10 AWG (5 mm2)
• TS-MPPT-60/M 8 AWG (8 mm2)
OR, of the same, or greater, cross-sectional area as the PV wires.
WARNING: Risk of Fire
DO NOT bond system electrical negative to earth ground at the controller.
Per NEC requirements, system negative must be bonded to earth ground
through a GFPD at only one point.
AVERTISSEMENT : Risque d’incendie
NE LIEZ PAS le côté négatif du système à la mise à la terre au niveau du
contrôleur. Selon les exigences du CNE, le côté négatif du système doit
être mis à la terre par un GFPD à un seul point.

27TriStar MPPT Operator’s Manual
26 Installation
Step 7 - Battery Voltage Sense
The voltage at the battery connection on the TriStar MPPT 150V may differ slightly from the
voltage directly at the battery bank terminals due to connection and cable resistance. The Battery
Voltage Sense connection enables the TriStar MPPT 150V to measure the battery terminal
voltage precisely with small gauge wires that carry very little current, and thus have no voltage
drop. Both battery voltage sense wires are connected to the TriStar at the 2-position terminal
located between the push-button and the positive (+) terminal lug (see gure 2-1).
A battery voltage sense connection is not required to operate your TriStar MPPT 150V controller,
but it is recommended for best performance. If a TriStar meter will be added to the controller, the
battery voltage sense will ensure that the voltage and diagnostic displays are very accurate.
The voltage sense wires should be cut to length as required to connect the battery to the voltage
sense terminal. The wire size can range from 16 to 24 AWG (1.0 to 0.25 mm2). A twisted pair
cable is recommended but not required. Use UL rated 300 Volt conductors. The voltage sense
wires may be pulled through conduit with the power conductors.
Fuse the positive (+) voltage sense wire as close to the battery as possible. Size the fuse based on
wire ampacity - a 1A fuse can be used for #24 wire.
Tighten the connector screws to 5 in-lb (0.56 Nm) of torque.
The maximum length allowed for each battery voltage sense wire is 98 ft (30 m).
Be careful to connect the battery positive (+) terminal to the voltage sense positive (+) terminal.
No damage will occur if the polarity is reversed, but the controller cannot read a reversed sense
voltage. Connecting the voltage sense wires to the RTS terminal will cause an alarm.
If a TriStar meter is installed, check the “TriStar Settings” to conrm the Voltage Sense and the
RTS (if installed) are both present and detected by the controller. MSViewTM PC software can
also be used to conrm the voltage sense is working correctly.
Step 8 - Network Connections
Network connections allow the TriStar MPPT 150V to communicate with other controller or com-
puters. A network can be as simple as one controller and one PC, or as complex as dozens of
controllers monitored via the internet. Review section 5.0 for more information about networking
and the connection(s) required for your system.
WARNING: Shock Hazard
Never route network cables in the same conduit as the power conductors.
WARNING: Shock Hazard
Only use 300 Volt UL rated communication cable.
AVERTISSEMENT : Risque de décharge électrique
N’acheminez jamais les câbles réseau dans le même conduit que les
conducteurs d’alimentation.
AVERTISSEMENT : Risque de décharge électrique
N’utilisez qu’un câble de communication 300 V homologué UL.
Connect the appropriate network cables to the TriStar MPPT 150V at this time.Access to the
network ports is easier before the power cables are attached. The ports are located inside the
conduit wiring box on the lower circuit board as shown in gure 3-5.
RS-485
(4 position) RS-232
(DB-9) Ethernet
(RJ-45)
MeterBus
(RJ-11)
Figure 3-5. TriStar MPPT 150V network port locations
EIA-485 Connection
The four (4) position EIA-485 connector on the TriStar MPPT 150V must be removed to access
the terminal screws. Remove the socket connector by rmly grasping the connector body and
pulling away from the circuit board as shown in Figure 3-6.
Figure 3-6. Removing the RS-485 socket connector

29TriStar MPPT Operator’s Manual
28 Installation
RS-232 Connection
The serial RS-232 port is a standard 9-pin (DB9) female connector. A low-prole serial connector
is recommended to save room in the wiring box.
NOTE:
The RS-232 and EIA-485 ports share hardware. Both ports cannot be used
simultaneously.
REMARQUE :
Les ports RS-232 et EIA-485 partagent le matériel. Ils ne peuvent pas être utilisés
simultanément.
Ethernet Connection
The RJ-45 Ethernet jack features two (2) indicator LEDs for connection status and network traf-
c. Use CAT-5 or CAT-5e twisted pair cable and RJ-45 plugs. If possible, pull the network cable
through conduit before crimping on the RJ-45 connectors. If using pre-assembled cables, take
care not to damage the plugs when the cables are pulled through conduit.
MeterBusTM Connection
MeterBusTM networks use standard 4-wire or 6-wire RJ-11 telephone cables. If possible, pull the
telephone cable through conduit before crimping on the RJ-11 connectors. If using pre-assem-
bled cables, take care not to damage the plugs when the cables are pulled through conduit.
Y-cable Connections for EMC-1 Use
TS-MPPT-30 and TS-MPPT-45 units can be Ethernet connected using the EMC-1 accessory and
an EMC-1 provided Y-cable. These models need to be connected to the EMC-1 with the Y-cable
(DB-9 serial and RJ-11 plugs at the TS-MPPT) and an RJ-11 plug at the EMC-1.
Step 9 - Power Connections
NOTE:
To comply with the NEC, the TriStar MPPT 150V must be installed using wiring
methods in accordance with the latest edition of the National Electric Code,
NFPA 70.
!
CAUTION: Risk of Fire and Shock
Connect battery terminals prior to the connection of array terminals. The battery
positive (+) terminal has a red cover, the solar positive (+) terminal has a yellow
cover.
REMARQUE :
Pour la conformité CNE, le TriStar MPPT 150V doit être installé selon des
méthodes de câblage conformes à la dernière édition du Code électrique
national, NFPA 70.
!
PRUDENCE : Risque d’incendie et de décharge électrique
Branchez les bornes de la batterie avant la connexion des bornes de réseau.
La borne positive (+) de la batterie a un capuchon rouge, la borne positive (+)
solaire a un capuchon jaune.
Wire Size
The four large power terminals are sized for 14 - 2 AWG (2.5 - 35 mm2) wire. The terminals are
rated for copper and aluminum conductors. Use UL-listed Class B 300 Volt stranded wire only.
Good system design generally requires large conductor wires for the solar and battery con-
nections that limit voltage drop losses to 2% or less. The wire tables in the appendix on pages
51-54 provide wire sizing information for connecting the solar array and battery bank to the
TriStar MPPT 150V with a maximum of 2% voltage drop.
Minimum Wire Size
The NEC requires that the wires carrying the system current never exceed 80% of the
conductor’s current rating. The table below provides the minimum size of copper and aluminum
wire allowed by NEC for all TriStar MPPT 150V models when the current equals the full
nameplate rating (30, 45 or 60 amps). Wire types rated for 75°C and 90°C are included.
Minimum wire sizes for ambient temperatures to 45°C are provided in table 3-2 below:
Model Wire Type 75°C Wire 90°C Wire
TS-MPPT-30 Copper 8 AWG (8.36 mm2) 8 AWG (8.36 mm2)
TS-MPPT-30 Aluminum 6 AWG (13.3 mm2) 8 AWG (8.36 mm2)
TS-MPPT-45 Copper 4AWG (21.1 mm2) 6 AWG (13.3 mm2)
TS-MPPT-45 Aluminum 3 AWG (26.7 mm2) 4 AWG (21.1 mm2)
TS-MPPT-60 Copper 3 AWG (26.7 mm2) 4 AWG (21.1 mm2)
TS-MPPT-60 Aluminum 1 AWG (42.4 mm2) 2 AWG (33.6 mm2)
Table 3-2 Minimum wire sizes

31TriStar MPPT Operator’s Manual
30 Installation
Disconnects
WARNING: Shock Hazard
Fuses, circuit breakers, and disconnect switches should never open grounded
system conductors. Only GFDI devices are permitted to disconnect grounded
conductors.
AVERTISSEMENT : Risque de décharge électrique
Les fusibles, coupe-circuits et interrupteurs ne doivent jamais ouvrir les conducteurs
du système mis à la terre. Seuls les dispositifs GFDI sont autorisés à déconnecter les
conducteurs reliés mis à la terre.
The NEC requires solar and battery fuses or DC breakers to be installed in the system. These
protection devices are external to the TriStar MPPT 150V controller, and must be a maximum of 45
amps for the TS-MPPT-30, 70 amps for the TS-MPPT 45, and 90 amps for the TS-MPPT-60/M.
Maximum battery short-circuit current rating must be less than the interrupt current rating of the
battery over-current protection device referenced above.
WARNING: Breakers and fuses may require lower ratings than referenced above, so
as not to exceed any specific wire ampacity.
AVERTISSEMENT: Disjoncteurs et fusibles peuvent exiger des cotes inférieures que
mentionnés ci-dessus de manière à ne pas pour dépasser n’importe quel fils
particulier admissible.
Connect the Power Wires
WARNING: Shock Hazard
The solar PV array can produce open-circuit voltages in excess of 150 Vdc when
in sunlight. Verify that the solar input breaker or disconnect has been opened
(disconnected) before installing the system wires.
AVERTISSEMENT : Risque de décharge électrique
Le réseau PV solaire peut produire des tensions de circuit ouvert supérieures à 150
Vdc à la lumière du soleil. Vériez que le coupe-circuit ou l’interrupteur d’entrée
solaire a été ouvert (déconnexion) avant d’installer les câbles du système.
Figure 3-7. Power terminal locations
Connect the four (4) power conductors shown in gure 3-7 above in the following steps:
1. Conrm that the system input and output disconnect switches are both turned off before
connecting the power wires to the controller. There are no disconnect switches inside the
TriStar MPPT 150V.
2. Provide for strain relief if the bottom knockouts are used and conduit is not used.
3. Pull the wires into the wiring box. The Remote Temperature Sensor and Battery Sense wires
can be inside the conduit with the power conductors. It is easier to pull the RTS and Sense
wires before the power cables.
WARNING: Risk of Damage
Be very certain that the battery connection is made with correct polarity. Turn
on the battery breaker/disconnect and measure the voltage on the open battery
wires BEFORE connecting to the TriStar MPPT 150V. Disconnect the battery
breaker/disconnect before wiring to the controller.
AVERTISSEMENT : Risque d’endommagement
Assurez-vous que la connexion a la batterie est effectuée avec la polarité
correcte. Activez le coupe-circuit/interrupteur de la batterie et mesure la tension
sur les câbles ouverts AVANT la connexion au TriStar MPPT 150V. Déconnectez
le coupe-circuit/interrupteur de la batterie avant le câblage sur le contrôleur.
4. Connect the Battery + (positive) wire to the Battery + terminal on the TriStar MPPT 150V. The
Battery + terminal has a red cover.
5. Connect the Battery - (negative) wire to one of the Common Negative terminals on the
TriStar MPPT 150V.
{
Solar +
Battery +
Solar -
Battery -
(Common Negative)

33TriStar MPPT Operator’s Manual
32 Installation
WARNING: Risk of Damage
Be very certain that the solar connection is made with correct polarity. Turn on
the solar array breaker/disconnect and measure the voltage on the open wires
BEFORE connecting to the TriStar MPPT 150V. Disconnect the solar breaker/
disconnect before wiring to the controller.
AVERTISSEMENT : Risque d’endommagement
Assurez-vous que la connexion solaire est effectuée avec la polarité correcte.
Activez le coupe-circuit/interrupteur de réseau solaire et mesure la tension sur
les câbles ouverts AVANT la connexion au TriStar MPPT 150V. Déconnectez le
coupe-circuit/interrupteur solaire avant le câblage sur le contrôleur.
6. Connect the Solar + (positive) wire to the Solar + terminal on the TriStar MPPT 150V. The
Solar + terminal has a yellow cover.
7. Connect the Solar - (negative) wire to one of the Common Negative terminals on the
TriStar MPPT 150V.
Torque all four (4) power terminals to 50 in-lbs (5.65 Nm)
Power-up
WARNING: Risk of Damage
Connecting the solar array to the battery terminal will permanently damage the
TriStar MPPT 150V.
WARNING: Risk of Damage
Connecting the solar array or battery connection with reverse polarity will
permanently damage the TriStar MPPT 150V.
AVERTISSEMENT : Risque d’endommagement
La connexion du réseau solaire sur la borne de la batterie endommagera le
TriStar MPPT 150V de façon permanente.
AVERTISSEMENT : Risque d’endommagement
La connexion du réseau solaire ou la connexion de la batterie avec une polarité
inversée endommagera le TriStar MPPT 150V de façon permanente.
• Conrm that the Solar and Battery polarities are correct.
• Turn the battery disconnect switch on rst. Observe that the LEDs indicate a successful
start-up. (LEDs blink Green - Yellow - Red in one cycle)
• Note that a battery must be connected to the TriStar MPPT 150V to start and operate the
controller. The controller will not operate only from solar input.
• Turn the solar disconnect on. If the solar array is in full sunlight, the TriStar MPPT 150V
will begin charging. If an optional TriStar Meter is installed, charging current will be report-
ed along with charging state.
To Power-down
WARNING: Risk of Damage
ONLY disconnect the battery from the TriStar MPPT 150V AFTER the solar input has
been disconnected. Damage to the controller may result if the battery is removed
while the TriStar MPPT 150V is charging.
AVERTISSEMENT : Risque d’endommagement
Le TriStar MPPT 150V SEULEMENT déconnecter la batterie APRÈS l’entrée solaire a
été déconnectée. Le contrôleur pourrait endommager si la batterie est retirée quand le
TriStar MPPT 150V est en charge.
• To prevent damage, power-down must be done in the reverse order as power-up.

35TriStar MPPT Operator’s Manual34 Operation
Operation4.0
The TriStar MPPT 150V operation is fully automatic. After installation is completed, there are few
operator tasks to perform. However, the operator should be familiar with the operation and care
of the TriStar MPPT 150V as described in this section.
4.1 TrakStarTM MPPT Technology
The TriStar MPPT 150V utilizes Morningstar’s TrakStarTM Maximum Power Point Tracking
(MPPT) technology to extract maximum power from the solar array. The tracking algorithm is fully
automatic and does not require user adjustment. TrakStarTM technology tracks the array maxi-
mum power point as it varies with weather conditions, ensuring that maximum power is harvested
from the array throughout the course of the day.
Current Boost
Under most conditions, TrakStarTM MPPT technology will “boost” the solar charge current. For
example, a system may have 36 Amps of solar current owing into the TS-MPPT and 44 Amps
of charge current owing out to the battery. The TriStar MPPT 150V does not create current!
Rest assured that the power into the TriStar MPPT 150V is the same as the power out of the
TriStar MPPT 150V. Since power is the product of voltage and current (Volts x Amps), the follow-
ing is true*:
(1) Power Into the TriStar MPPT 150V = Power Out of theTriStar MPPT 150V
(2) Volts In x Amps In =Volts Out x Amps Out
* assuming 100% efficiency. Losses in wiring and conversion exist.
If the solar module’s maximum power voltage (Vmp) is greater than the battery voltage, it follows
that the battery current must be proportionally greater than the solar input current so that input
and output power are balanced. The greater the difference between the Vmp and battery voltage,
the greater the current boost. Current boost can be substantial in systems where the solar array
is of a higher nominal voltage than the battery as described in the next section.
High Voltage Strings and Grid-Tie Modules
Another benet of TrakStarTM MPPT technology is the ability to charge batteries with solar arrays
of higher nominal voltages. For example, a 12 volt battery bank may be charged with a 12, 24,
36, or 48 volt nominal off-grid solar array. Grid-tie solar modules may also be used as long as
the solar array open circuit voltage (Voc) rating will not exceed the TriStar MPPT 150V 150 Volt
maximum input voltage rating at worst-case (coldest) module temperature. The solar module
documentation should provide Voc vs. temperature data.
Higher solar input voltage results in lower solar input current for a given input power. High voltage
solar input strings allow for smaller gauge solar wiring. This is especially helpful and economical
for systems with long wiring runs between the controller and the solar array.
An Advantage Over Traditional Controllers
Traditional controllers connect the solar module directly to the battery when recharging. This
requires that the solar module operate in a voltage range that is usually below the module’s
Vmp. In a 12 Volt system for example, the battery voltage may range from 10 - 15 Vdc, but the
module’s Vmp is typically around 16 or 17 Volts. Figure 4-1 shows typical current vs. voltage and
power output curves for a nominal 12 Volt off-grid module.
POWER
VOLTAGE
10 15 17
TrackStar
Maximum
Power
Point
Traditional
Controller
Operating Range
CURRENT
VOLTAGE
10 15 17
Maximum
Power
Point
Typical Battery
Voltage Range
12 Volt Module
Current vs. Voltage
12 Volt Module
Output Power
Figure 4-1. Nominal 12 Volt Solar Module I-V curve and output power graph.
The array Vmp is the voltage where the product of output current and voltage (Amps x Volts) is
greatest, which falls on the “knee” of the solar module I-V curve as shown on the left in Figure
4-1.
Because traditional controllers do not always operate at the Vmp of the solar array, energy is
wasted that could otherwise be used to charge the battery and power system loads. The greater
the difference between battery voltage and the Vmp of the module, the more energy is wasted.
TrakStarTM MPPT technology will always operate at the maximum power point resulting in less
wasted energy compared to traditional controllers.
Conditions That Limit the Effectiveness of MPPT
The Vmp of a solar module decreases as the temperature of the module increases. In very hot
weather, the Vmp may be close or even less than battery voltage. In this situation, there will be
very little or no MPPT gain compared to traditional controllers. However, systems with modules
of higher nominal voltage than the battery bank will always have an array Vmp greater than battery
voltage. Additionally, the savings in wiring due to reduced solar current make MPPT worthwhile
even in hot climates.

37TriStar MPPT Operator’s Manual
36 Operation
4.2 Battery Charging Information
4-Stage Charging
The TriStar MPPT 150V has a 4-stage battery charging algorithm for rapid, efcient, and safe
battery charging. Figure 4-2 shows the sequence of the stages.
NIGHT NIGHT
BULK
CHARGE
ABSORPTION
FLOAT
EQUALIZE
VOLTAGE
TIME
Figure 4-2. TriStar MPPT 150V Charging Algorithm
Bulk Charge Stage
In Bulk charging stage, the battery is not at 100% state of charge and battery voltage has not yet
charged to the Absorption voltage set-point. The controller will deliver 100% of available solar
power to recharge the battery.
Absorption Stage
When the battery has recharged to the Absorption voltage set-point, constant-voltage regulation
is used to maintain battery voltage at the Absorption set-point. This prevents heating and exces-
sive battery gasing. The battery is allowed to come to full state of charge at the Absorption volt-
age set-point. The green SOC LED will blink once per second duringAbsorption charging.
The battery must remain in the Absorption charging stage for a cumulative 150 - 180 minutes,
depending on battery type, before transition to the Float stage will occur. However, Absorption
time will be extended by 30 minutes if the battery discharges below 12.5 Volts (25 Volts @24 V,
50 Volts @48 V) the previous night.
The Absorption set-point is temperature compensated if the RTS is connected; otherwise,
voltages set-points are based on the reference of 25ºC.
.
Float Stage
After the battery is fully charged in the Absorption stage, the TriStar MPPT 150V reduces the
battery voltage to the Float voltage set-point. When the battery is fully recharged, there can be
no more chemical reactions and all the charging current is turned into heat and gasing. The oat
stage provides a very low rate of maintenance charging while reducing the heating and gasing of
a fully charged battery. The purpose of oat is to protect the battery from long-term overcharge.
The green SOC LED will blink once every two (2) seconds during Float charging.
Once in Float stage, loads can continue to draw power from the battery. In the event that the
system load(s) exceed the solar charge current, the controller will no longer be able to maintain
the battery at the Float set-point. Should the battery voltage remain below the Float set-point for
a cumulative 60 minute period, the controller will exit Float stage and return to Bulk charging.
The Float set-point is temperature compensated if the RTS is connected; otherwise, voltages
set-points are based on the reference of 25ºC.
Equalize Stage
WARNING: Risk of Explosion
Equalizing vented batteries produces explosive gases. The battery bank must be properly
ventilated.
!
CAUTION: Equipment Damage
Equalization increases the battery voltage to levels that may damage sensitive DC loads. Verify
all system loads are rated for the temperature compensated Equalize voltage before beginning
an Equalization charge.
!
CAUTION: Equipment Damage
Excessive overcharging and gasing too vigorously can damage the battery plates and cause
shedding of active material from the plates. An equalization that is too high or long can be
damaging. Review the requirements for the particular battery being used in your system.
AVERTISSEMENT : Risque d’explosion
Les batteries à évent et compensation produisent des gaz explosifs. Le groupe de batteries doit
être correctement ventilé.
!
PRUDENCE : Endommagement de l’équipement
La compensation augmente la tension des batteries à des niveaux pouvant endommager les
charges sensibles en CC. Vériez que toutes les charges du système sont conçues pour la
tension de compensation par température avant de commencer une charge de compensation.
!
PRUDENCE : Endommagement de l’équipement
Une surcharge excessive et un dégagement gazeux trop vigoureux peuvent endommager les
plaques de batteries et provoquer l’élimination du matériau actif des plaques. Une compensation
trop élevée ou trop longue peut provoquer des dégâts. Examinez les exigences pour la batterie
particulière utilisée dans votre système.

39TriStar MPPT Operator’s Manual
38 Operation
Certain battery types benet from a periodic boost charge to stir the electrolyte, level the cell
voltages, and complete the chemical reactions. Equalize charging raises the battery voltage
above the standard absorption voltage so that the electrolyte gases. The green SOC LED will
blink rapidly two (2) times per second during equalization charging.
The duration of the equalize charge is determined by the selected battery type. See table 4-1
in this section for more details. The Equalization Time is dened as time spent at the equalize
set-point. If there is insufcient charge current to reach the equalization voltage, the equalization
will terminate after an additional 60 minutes to avoid over gasing or heating the battery. If the
battery requires more time in equalization, an equalize can be requested using the TriStar Meter
or push-button to continue for one or more additional equalization cycles.
The Equalize set-point is temperature compensated if the RTS is connected; otherwise, voltages
set-points are based on the reference of 25ºC.
.
When to Equalize
The ideal frequency of equalizations depends on the battery type (lead-calcium, lead-antimony,
etc.), the depth of discharging, battery age, temperature, and other factors. One very broad
guide is to equalize ooded batteries every 1 to 3 months or every 5 to 10 deep discharges.
Some batteries, such as the L-16 group, will need more frequent equalizations.
The difference between the highest cell and lowest cell in a battery can also indicate the need
for an equalization. Either the specic gravity or the cell voltage can be measured. The battery
manufacturer can recommend the specic gravity or voltage values for your particular battery.
Why Equalize?
Routine equalization cycles are often vital to the performance and life of a battery - particularly
in a solar system. During battery discharge, sulfuric acid is consumed and soft lead sulfate
crystals form on the plates. If the battery remains in a partially discharged condition, the soft
crystals will turn into hard crystals over time. This process, called “lead sulfation,” causes the
crystals to become harder over time and more difcult to convert back to soft active materials.
Sulfation from chronic undercharging of the battery is the leading cause of battery failures in
solar charging systems. In addition to reducing the battery capacity, sulfate build-up is the
most common cause of buckling plates and cracked grids. Deep cycle batteries are particularly
susceptible to lead sulfation.
Normal charging of the battery can convert the sulfate back to the soft active material if the
battery is fully recharged. However, a solar charged battery is seldom completely recharged, so
the soft lead sulfate crystals harden over a period of time. Only a long controlled overcharge, or
equalization, at a higher voltage can reverse the hardening of sulfate crystals.
Preparation for Equalization
First, conrm that all of the system loads are rated for the equalization voltage. Consider that at
0°C (32°F) the equalization voltage will reach 16.75 Volts for 12 Volt L-16 batteries (67.0 Volts for
48 Volt systems) with a temperature sensor installed. Disconnect any loads at risk of damage
due to the high input voltage.
If Hydrocaps are used, be sure to remove them before starting an equalization. Replace the
Hydrocaps with standard battery cell caps. The Hydrocaps can get very hot during an equaliza-
tion. Also, if Hydrocaps are used, the equalization should be set for manual only (DIP switch #7
is Off).
After the equalization is nished, add distilled water to each cell to replace gasing losses. Check
that the battery plates are covered.
Equalize a Sealed Battery?
The Battery Charging Settings table (see table 4-1 in this section) shows two sealed battery set-
tings with an Equalization cycles. These are minimal “boost” cycles to level individual cells. This
is not an equalization, and will not vent gas from sealed batteries that require up to 14.4V charg-
ing (12V battery). Many VRLA batteries, including AGM and gel, have charging requirements up
to 14.4V (12V battery). Depending on the battery manufacturer’s recommendation, the “boost”
cycle for sealed cells can be disabled by setting the equalize setting switch to manual, if required.
Battery Charging Settings
Preset TriStar MPPT 150V battery charging options are shown in tables 4-1 and 4-2 below. All
voltage settings listed are for nominal 12 Volt batteries. Multiply the voltage settings by two (2) for
24 Volt batteries or by four (4) for 48 Volt systems.
NOTE: These settings are general guidelines for use at the operator’s discretion. The
TriStar MPPT 150V can be set or programmed to charge to virtually any specic
requirements, but only the battery manufacturer can recommend optimal settings for
their products.
Settings
Switches
4 - 5 - 6
Battery
Type Absorp. Stage
(Volts)
Float
Stage
(Volts)
Equalize
Stage
(Volts)
Absorp.
Time
(Minutes)
Equalize
Time
(Minutes)
Equalize
Interval
(Days)
off-off-off 1 - Gel 14.00 13.70 150
off-off-on 2 - Sealed* 14.15 13.70 14.40 150 60 28
off-on-off 3 - Sealed* 14.30 13.70 14.60 150 60 28
off-on-on 4 - AGM/Flooded 14.40 13.70 15.10 180 120 28
on-off-off 5 - Flooded 14.60 13.50 15.30 180 120 28
on-off-on 6 - Flooded 14.70 13.50 15.40 180 180 28
on-on-off 7 - L-16 15.40 13.40 16.00 180 180 14
on-on-on 8 - Custom Custom Custom Custom Custom Custom Custom
* “Sealed” battery type includes gel and AGM batteries
Table 4-1. Battery charging settings for each selectable battery type