SamplexPower MSK-20A Manuale utente
Solar
Charge
Controller
MSK-20A
Please read this
manual BEFORE
using your
Charge
Controller
Owner's
Manual
2 | SAMLEX AMERICA INC.
OWNER'S MANUAL | Index
SECTION 1
Safety Instructions................................................................. 3
SECTION 2
General Information, Features & Layout ............................... 5
SECTION 3
Installation ........................................................................... 7
SECTION 4
Operation ........................................................................ 13
SECTION 5
Protections & Troubleshooting ........................................... 18
SECTION 6
Specications ...................................................................... 23
SECTION 7
Warranty ........................................................................ 25
Disclaimer of Liability
UNLESS SPECIFICALLY AGREED TO IN WRITING, SAMLEX AMERICA INC.:
1. MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION
PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.
2. ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES, WHETHER SPECIAL, DIRECT, INDI-
RECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY
SUCH INFORMATION WILL BE ENTIRELY AT THE USERS RISK.
Samlex America reserves the right to revise this document and to periodically make changes to the content
hereof without obligation or organization of such revisions or changes.
Copyright Notice/Notice of Copyright
Copyright © 2021 by Samlex America Inc. All rights reserved. Permission to copy, distribute and /or modify this
document is prohibited without express written permission by Samlex America Inc.
2 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 3
SECTION 1 | Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS
PLEASE READ THE FOLLOWING SAFETY INSTRUCTIONS BEFORE USING THE CHARGE CONTROLLER.
FAILURE TO ABIDE BY THE RECOMMENDATIONS MAY CAUSE PERSONAL INJURY / DAMAGE TO THE
CONTROLLER.
The following safety symbols will be used in this manual to highlight safety and information:
WARNING!
Indicates possibility of physical harm to the user in case of non-compliance.
!CAUTION!
Indicates possibility of damage to the equipment in case of non-compliance.
i
INFO
Indicates useful supplemental information.
WARNINGS !CAUTIONS!
1. This Charge Controller is not waterproof (Ingress Protection Rating is IP-30). PLEASE EN-
SURE THAT THE UNIT IS INSTALLED IN DRY, COOL AND WELL VENTILATED ENVIRONMENT.
2. Ground the Negative of the battery as follows:
• to Earth Ground in shore installations
• to Chassis Ground in Negative grounded mobile installations
3. There are no user serviceable parts inside the controller. Do not disassemble or
attempt to repair it.
4. Install external fuses / breakers as required.
5. Disconnect the Solar Panel(s) and fuse / breakers near to battery before installing or adjust-
ing the controller.
6. Conrm that power connections are tightened to avoid excessive heating from loose con-
nection.
7. The charge controller has been factory preset to optimally charge 12V / 24V Sealed Lead
Acid Batteries (AGM - Absorbed Glass Mat)
8. Comply with battery manufacturer’s recommendations.
9. Avoid charging damaged, defective or old battery.
10. Ensure correct polarity is maintained when connecting the Charge Controller to the battery
- Connect the Positive output terminal to the Positive Battery Post and the Negative output
terminal to the Negative Battery Post.
11. When charging, removal of the battery from the vehicle is not necessary provided the bat-
tery is being charged in a well-ventilated area.
12. Batteries contain very corrosive diluted Sulphuric Acid as electrolyte. Precautions should be
taken to prevent contact with skin, eyes or clothing. If battery electrolyte makes contact
with skin or clothing, ush immediately with water. See a doctor immediately.
4 | SAMLEX AMERICA INC.
SECTION 1 | Safety Instructions
13. Batteries generate Hydrogen and Oxygen during charging resulting in evolution of explosive
gas mixture in non-sealed batteries. Care should be taken to ventilate the battery area
when non-sealed batteries are used and follow battery manufacturer’s recommendations.
14. Ensure there are no ammable substances, explosive gases, ames, smoke or spark near
the battery or the Solar Panel(s).
15. Use caution to reduce the risk of dropping a metal tool on the battery. It could spark or
short circuit the battery or other electrical parts and could cause an
explosion.
16. Remove metal items like rings, bracelets and watches when working with batteries. Batter-
ies can produce a short circuit current high enough to weld a ring or the like to metal and
thus, cause a severe burn.
17. If you need to remove a battery, always remove the Negative (Ground) connection from the
battery rst. Make sure that all the accessories are off so that you do not cause a spark.
18. Solar Panel(s) generate electrical power when exposed to sunlight. Place a dark cover over
the panels when handling panels that have bare, un-insulated output wires. Accidental
shorting of panel terminals or wiring connected to the panels can result in spark causing
personal injury or a re hazard.
19. It is important that the battery gets fully charged frequently (at least once per week).
Otherwise, the battery can become permanently damaged due to under charging. Partially
charged batteries can quickly sulfate internally which is an irreversible condition. It is good
practice to prevent a battery from being discharged below 50%. Deeper discharging
severely shortens battery life.
20. Keep the surface of Solar Panel(s) clean from dust / dirt / leaves / other debris. Clean with a
soft wet cloth (to prevent scratching). Do not walk on the panels.
21. Installation and wiring must comply with the local and National Electrical Codes and must
be done by a certied electrician.
4 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 5
SECTION 2 | General Information, Features
& Layout
2.1 GENERAL INFORMATION
MSK-20A is a 20A rated, Series Type of PWM (Pulse Width Modulation) Charge Controller. It is
based on an advanced design using a microcontroller for digital accuracy and fully automatic
operation. It is designed to charge 12V / 24V Lead Acid Batteries..
2.2 FEATURES
- Advanced microcontroller based, high performance design for digital accuracy and fully
automatic and intelligent operation
- Series Type PWM (Pulse Width Modulation) charging for low loss, higher efciency
charging and longer battery life
- Up to 50V Open Circuit Voltage (Voc) and up to 20A Short Circuit Current (Isc) of PV Panel(s)
- Dual voltage capability – can be used with 12V / 24V batteries. 12V / 24V Nominal Battery
System is detected automatically: Battery voltage < 18V is detected as 12V battery and >18V
is detected as 24V battery
- 3 stages of charging for 100% return of capacity and for longer battery life
•Normal: Bulk Stage gAbsorption Stage gFloat Stage
- Factory preset for charging Sealed Lead Acid Batteries (AGM - Absorbed Glass Mat)
- User friendly LED display for monitoring of operation and self diagnostics for
troubleshooting
- Built-in or optional Remote Battery Temperature Sensor (Model MSK-TS) for battery
temperature compensation to ensure improved charging of batteries that experience wider
temperature variations during the year
- MOSFET based reverse current blocking for night-time battery discharge prevention. This
allows much lower losses as compared to Diode based blocking
- Protections: (i) Solar Panel over current (ii) Solar Panel short circuit (iii) Solar Panel
reverse polarity (iv) Battery reverse polarity (v) Battery over voltage (vi) Controller / battery
overtemperature (vii) Overload and short circuit protections on Load Terminals
2.3 APPLICATIONS
- Recreational / Service Vehicles
- Off grid
- Portable Charging Kits
- Boats and marine crafts
- Field work / mobile ofces
- Telecommunications
6 | SAMLEX AMERICA INC.
2.4 LAYOUT 1 2 3
4
5A 5B 6A 6B 7A 7B
5A 5B 6A 6B 7A 7B 98
LEGEND FOR FIG 2.1
Item No. Description Item No. Description
1 Solar Panel Status LED 6A Battery Terminal (+)
2 Battery Status LED 6B Battery Terminal (–)
3 Load Status LED 7A Load Terminal (+)
4
Load On/Off Button
Also used for clearing load size
overload and short circuit faults.
7B Load Terminal (–)
5A Solar Panel Input Terminal (+) 8
(See NOTE 1)
Connector for optional Remote Battery
Temperature Sensor Model "MSK-TS"
5B Solar Panel Input Terminal (–) 9 RS-485 Communication Port
(NOT USED)
NOTES: 1. If the Remote Battery Temperature Sensor is short-circuited or damaged, the control-
ler will charge or discharge at the default temperature setting of 25°C.
2. All terminal can accept conductor size up to AWG#8 / 10mm2
SECTION 2 | General Information, Features
& Layout
Fig 2.1: Layout of Charge Controller MSK-20A
6 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 7
SECTION 3 | Installation
3.1 SAFETY
WARNING! !CAUTION!
PLEASE READ ALL THE SAFETY INSTRUCTIONS GIVEN IN SECTION 1 BEFORE
INSTALLING AND OPERATING THE CONTROLLER. FAILURE TO ABIDE BY THE
RECOMMENDATIONS MAY CAUSE PERSONAL INJURY / DAMAGE TO THE KIT.
DO NOT USE THE UNIT IN WET ENVIRONMENT
• Please note that this unit is not waterproof (its Ingress Protection Rating is
IP-30). Ensure that the unit is installed in dry environment.
GROUNDING
• Ground the Negative terminal of the BATTERY (6B in Fig 2.1) to Earth Ground
in shore installation and to the Chassis Ground in mobile installations.
• DO NOT GROUND THE SOLAR ARRAY Negative when battery negative is
grounded.
BATTERY TYPES
• The unit has been factory preset to optimally charge 12/24V, Sealed (AGM)
Lead Acid Batteries.
MISE EN GARDE! !ATTENTION!
VEUILLEZ LIRE TOUTES LES INSTRUCTIONS DE SÉCURITÉ DONNÉES DANS
LA SECTION 1 AVANT D'INSTALLER ET D'UTILISER LE CONTRÔLEUR. NON-
RESPECT DE LA LES RECOMMANDATIONS PEUVENT PROVOQUER DES
BLESSURES OU ENDOMMAGER LE KIT.
N'UTILISEZ PAS L'APPAREIL DANS UN ENVIRONNEMENT HUMIDE
• Veuillez noter que cet appareil n'est pas étanche (son indice de protection
d'entrée est IP-30). Par conséquent, veuillez vous assurer que l'unité est
installée dans un environnement sec.
MISE À LA TERRE
• Mettez à la terre la borne négative de la batterie (6B, Fig 2.1) à la terre à la
terre dans l'installation à terre et à la masse du châssis dans les installations
mobiles à la terre négative.
TYPES DE BATTERIE
• L'unité a été préréglée en usine pour charger de manière optimale les
batteries au plomb-acide scellées (AGM) 12 / 24V.
8 | SAMLEX AMERICA INC.
SECTION 3 | Installation
3.2 DIMENSIONAL DRAWING
Dimensional drawing is given at Fig 3.1 below:
50
Solar Charge Controller
MSK-20A | 20 AMPS
Height: 47.8 mm
81.4
Mounting Hole: 4.3 mm Terminals: AWG#8 / 10 mm2
159.6
147
4.3
Fig 3.1: Dimensional Drawing of Charge Controller MSK-20A
3.3 MOUNTING
Refer to Fig 3.1
When mounting the controller, ensure free air through the ventilation slots at the bottom of the
unit. There should be at least 6 inches (150 mm) of clearance above and below the controller to
allow for cooling. If mounted in an enclosure, forced air ventilation is highly recommended.
WARNING!
RISK OF EXPLOSION! NEVER INSTALL THE CONTROLLER IN A SEALED ENCLO-
SURE WITH FLOODED BATTERIES! DO NOT INSTALL IN A CONFINED AREA
WHERE BATTERY GASSES CAN ACCUMULATE.
MISE EN GARDE!
RISQUE D'EXPLOSION! N'INSTALLEZ JAMAIS LE CONTRÔLEUR DANS UN
BOÎTIER SCELLÉ AVEC DES BATTERIES INONDÉES! NE PAS INSTALLER DANS
UNE ZONE CONFINÉE OÙ DES GAZ DE BATTERIE PEUVENT S'ACCUMULER.
8 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 9
3.3.1 Step 1: Choose Mounting Location
Locate the controller in area protected from direct sun, high temperature, and water. Make sure
there is good ventilation.
3.3.2 Step 2: Check For Clearance
Place the controller in the location where it will be mounted. Verify that there is sufcient room
to run wires and that there is sufcient room above and below the controller for airow. Ensure
cool air can move freely through the heat sink ns at the bottom of the unit.
3.3.3 Step 3: Mark Holes
Use a pencil or pen to mark the 4 mounting hole locations on the mounting surface, (Refer to
the dimensional drawing in Fig 3.1).
3.3.4 Step 4: Drill Holes
Remove the controller and drill 4 holes in the marked locations. Use drill size #29 for #8 self tap-
ping screws.
3.3.5 Step 5: Secure Controller
Place the controller on the surface and align the mounting holes with the drilled holes in Step
3.3.4. Secure the controller in place using 4, #8 self tapping screws.
3.4 CONNECTIONS
+
12V/24V
Battery
12V/24VDC
Load (<20A)
e.g. Light
Light Switch “S1”
rated for 20A
Ground the Negative Terminal
of the battery as follows, if required by code:
• Ground to Earth Ground in shore installations
• Ground to Chassis Ground in Negative Grounded
mobile installations
Optional
Remote Battery
Temp Sensor
Model MSK-TS
120 VAC
Fuse F2 Fuse
F1
(30A)
Solar Panel
or Array
MSK-20A
+ –
NOTE: Maximum current on the Load
Terminals should be limited to 20A
12V/24V
Inverter
Temp.
Sensor COM
Fig 3.2: Wiring Diagram
SECTION 3 | Installation
10 | SAMLEX AMERICA INC.
SECTION 3 | Installation
3.4.1 Step1: Battery Connection
WARNING!
RISK OF EXPLOSION OR FIRE! NEVER SHORT CIRCUIT BATTERY POSITIVE (+)
AND NEGATIVE (-).
MISE EN GARDE!
RISQUE D'EXPLOSION OU D'INCENDIE! NE COURT-CIRCUITEZ JAMAIS LA
BATTERIE POSITIF (+) ET NÉGATIF (-).
Refer to Fig 3.2
Before the battery is connected:
• Make sure that battery voltage is greater than 8V so as to start up the controller.
• For 24V systems, make sure the battery voltage is not less than 18V to ensure that battery
system voltage is correctly sensed as 24V.
• Battery system voltage will be sensed automatically when the controller starts up for the rst time.
• A 30A fuse (F1) is required to protect the cable run from the battery to the charge controller
against short circuit. Install the fuse not more than 7" from the battery Positive terminal. Do not
insert the fuse at this time.
3.4.2 Step 2: Load Connection through Load Terminals (Limited to 20A)
Refer to Fig 3.2
The Load Terminals of the controller can be connected to such electrical devices as lights and other
devices with load current of up to 20A. Controller provides power to the load(s) through the battery.
When load(s) are fed from the Load Terminals, the controller will provide the following protec-
tions on the load side:
Protect the battery as follows:
- Battery Low Voltage Alarm (≤12V/24V): Battery Status LED (2, Fig 2.1) will be steady ORANGE.
Output will still be available at Load Terminals. This condition will auto reset at 12.2 / 24.4V
WARNING!
CURRENT OUTPUT ON THE LOAD TERMINALS IS LIMITED TO A MAXIMUM OF 20A.
IF HEAVIER LOADS DRAWING MORE THAN 20A LIKE INVERTER ETC. ARE REQUIRED
TO BE POWERED, CONNECT THEM DIRECTLY TO THE BATTERY THROUGH APPROPRI-
ATE FUSE "F2" THAT SHOULD MATCH THE DC INPUT CURRENT OF THE INVERTER.
THIS FUSE SHOULD ALSO BE INSTALLED WITHIN 7" OF THE BATTERY (+) TERMINAL.
Indice
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