Samlexpower SMC-20 Manuale utente
Solar
Charge
Controller
SMC-20
Please read this
manual BEFORE
installing your
Solar Charge
Controller
Owner's
Manual
2 | SAMLEX AMERICA INC.
OWNER'S MANUAL | Index
SECTION 1
Safety .................................................................................... 3
SECTION 2
Description .................................................................................. 5
SECTION 3
Installation ................................................................................... 7
SECTION 4
Operation ................................................................................ 11
SECTION 5
Maintenance .................................................................................. 11
SECTION 6
Troubleshooting ............................................................................. 12
SECTION 7
Specications .................................................................................. 14
SECTION 8
Warranty .................................................................................. 15
DETAILED PRODUCT INFORMATION
For a complete user manual including specications, application
notes, installation instructions, trouble shooting and more, please
visit the web page for this product on www.samlexamerica.com.
Product page can be found using the “Search by Model” eld.
SAMLEX AMERICA INC. | 3
SECTION 1 | Safety
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important Safety and Operating Instructions. Please
read before using this unit .
These operating instructions are part of the product. Read these operating
instructions carefully before use, keep them over the entire lifetime of the
product, and pass them on to any future owner or user of this product.
Applicability
This manual describes the installation, function, operation and mainte-
nance of the solar charge controller.
Further technical information is provided in a separate technical manual.
Users
These operating instructions are intended for end customers. A technical
expert must be consulted in cases of uncertainty.
Description of symbols
Safety instructions are identied as follows:
!CAUTION!
Type, source and consequences of the danger! Measures
for avoiding danger.
SAFETY
Proper usage
The solar charge controller may only be used in PV systems for charging and
controlling lead-acid batteries in accordance with this operating manual
and the charging specications of the battery manufacturer.
Improper usage
No energy source other than a solar generator may be connected to the
solar charge controller. No mains devices, diesel generators or wind genera-
tors may be connected. Do not connect any defective or damaged measur-
ing equipment.
General safety instructions
- Follow the general and national safety and accident prevention
regulations.
- Never alter or remove the factory plates and identication labels.
- Keep children away from PV systems.
- Never open the device.
Other risks
1. Danger of re and explosion:
- Do not use the solar charge controller in dusty environments, in the
vicinity of solvents or where inammable gases and vapours can occur.
- No open res, ames or sparks in the vicinity of the batteries.
4 | SAMLEX AMERICA INC.
SECTION 1 | Safety
- Ensure that the room is adequately ventilated.
- Check the charging process regularly.
- Follow the charging instructions of the battery manufacturer.
2. Battery acid:
- Acid splashes on skin or clothing should be immediately treated with
soap suds and rinsed with plenty of water.
- If acid splashes into the eyes, immediately rinse with plenty of water.
Seek medical advice.
Fault behaviour
Operating the solar charge controller is dangerous in the
following situations:
- The solar charge controller does not appear to function at all.
- The solar charge controller or connected cables are visibly damaged.
- Emission of smoke or uid penetration.
- When parts are loose.
- In these cases immediately remove the solar charge controller
from the solar modules and battery.
SAMLEX AMERICA INC. | 5
2 1 3
345
12a 2b 2c 2d
FUNCTIONS
The solar charge controller:
- Monitors the state of charge of the battery bank,
- controls the charging process,
- controls the connection/disconnection of loads.
This optimises battery use and signicantly extends its service life.
A battery charging algorithm protects the battery from harmful states.
Activation of the three deep discharge functions (LVW, LVD and LVR) is
dependent upon the state of charge (SOC). The switching thresholds lie
within the corresponding voltage window in accordance with the discharge
or charging current.
CONSTRUCTION
The solar charge controller consists of the following components:
1. Info LED
2. 4 LEDs for displaying the State of Charge
(RED - 2a, YELLOW - 2b, GREEN - 2c & GREEN - 2d)
3. Terminal block for connecting solar module
4. Terminal block for connecting battery
5. Terminal block for connecting loads
SECTION 2 | Description
6 | SAMLEX AMERICA INC.
LED DISPLAYS
LED STATUS MEANING
Info LED (1) Illuminates GREEN Normal operation
Flashes RED A fault exists
(see Section 6: Troubleshooting)
RED LED (2a) Flashing quickly Battery empty,
State of Charge < 40%. When the
battery continues to be discharged,
the deep-discharge deactivation
is triggered
Flashing Deep-discharge deactivation,
State of Charge < 30%
YELLOW LED
(2b)
Illuminates Battery weak,
State of Charge < 50%
Flashing Switch-on threshold after deep-
discharge deactivation has not yet
been reached, State of charge is
40% to 50%
GREEN LED (2c) Illuminates Battery good,
State of Charge > 50%
GREEN LED (2d) Illuminates Battery full, State of Charge > 80%
Flashing quickly Battery full, charge regulation active,
i.e. charging current reduced
SECTION 2 | Description
SAMLEX AMERICA INC. | 7
SECTION 3 | Installation
!WARNING!
Danger of explosion from sparking! Danger of electric shock!
- The solar charge controller may only be connected to the local loads
and the battery by trained personnel and in accordance with the ap-
plicable regulations.
- Follow the installation and operating instructions for all components
of the PV system.
- Ensure that no cables are damaged.
MOUNTING THE SOLAR CHARGE CONTROLLER
Mounting location requirements
- Do not mount the solar charge controller outdoors or in wet rooms.
- Do not subject the solar charge controller to direct sunshine or other
sources of heat.
- Protect the solar charge controller from dirt and moisture.
- Mount upright on the wall (concrete) on a non-ammable substrate.
- Maintain a minimum clearance of 10 cm below and around the device
to ensure unhindered air circulation.
- Mount the solar charge controller as close as possible to the batteries
(with a safety clearance of at least 30 cm).
Fastening the solar charge controller
- Mark the position of the solar charge controller fastening holes on
the wall.
- Drill 4 x 6 mm holes and insert dowels.
- Fasten the solar charge controller to the wall with the cable
openings facing
down- wards, using 4 oval head screws M4 x 40 (DIN 7996).
CONNECTION
Preparing the wiring
The cross section of the connection cable depends on the power output of
the solar charge controller.
CONTROLLER
TYPE
LOAD/MODULE
CURRENT CROSS-SECTION AWG INSULATION
20A 20A 10 mm2885°C
The table above applies to the following cable lengths:
- 10 m solar module connection cable
- 2 m battery connection cable
- 5 m load connection cable
Consult a dealer if the specied cable lengths are inadequate.
8 | SAMLEX AMERICA INC.
SECTION 3 | Installation
An additional external fuse (not provided) must be connected to the
battery connection cable, close to the battery pole. The external fuse pre-
vents cable short circuits. A 40A fuse can be used for all controller types.
!WARNING!
Danger of explosion from sparking! Danger of electric shock! Solar mod-
ules generate electricity under incident light. The full voltage is present,
even when the incident light levels are low.
- Protect the solar modules from incident light during installation, e.g.
cover them.
- Never touch uninsulated cable ends.
- Use only insulated tools.
- Ensure that all loads to be connected are switched OFF. If necessary,
remove the fuse.
- Connections must always be made in the sequence described below.
345
12a 2b 2c 2d
2 1 3
A+ A-
MM-
Battery
(40A Fuse at A+)
LL-
Load
Solar
Module
SAMLEX AMERICA INC. | 9
1ST STEP: CONNECT THE BATTERY
- Label the battery connection cables as a plus cable (A+)
and a minus cable (A–).
- Lay the battery cables in parallel between the solar
charge controller and the battery.
- Connect the battery connection cable with the correct polarity to the
middle pair of terminals on the solar charge controller (with the bat-
tery symbol).
- Remove any external 40A fuse in battery connection cable A+.
- Connect battery connection cable A+ with 40A fuse to the Positive
pole of the battery.
- Connect battery connection cable A– to the Negative pole of the bat-
tery.
- Replace the external fuse in the battery connection cable A+.
- If the connection polarity is correct, the info LED illuminates green.
2ND STEP: CONNECT THE SOLAR MODULE
- Ensure that the solar module is protected from incident
light.
- Ensure that the solar module does not exceed the
maximum permissible input current.
- Label the solar module connection cables as a plus cable (M+) and a
minus cable (M–).
- Lay both solar module connection cables in parallel between the solar
module and the solar charge controller.
- First connect the M+ solar module connection cable to the correct
pole of the left pair of terminals on the solar charge controller (with
the solar module symbol), then connect the M– cable.
- Remove the covering from the solar module.
3RD STEP: CONNECT LOADS
Notes:
- Deep Discharge Protection (also called Low Voltage
Disconnect or LVD) is only provided for loads < 20A that
are connected to the Load Terminals (5).
- Critical loads like emergency lights, radios, etc. that require un-inter-
rupted power source are connected directly to the battery through
fuse – close to the battery to protect battery cables against short
circuit.
- Loads drawing > 20A should be connected directly to the battery,
preferably through separate Low Voltage Disconnect (LVD). Appropri-
ate fuse should be used close to the battery to protect battery cables
against short circuit.
- Other loads drawing < 20A should be connected to the Load Terminals
(5) as follows:
- Label the load connection cables as a plus cable (L+) and a minus
cable (L–).
- Lay the load connection cables in parallel between the solar
charge controller and the load
SECTION 3 | Installation
10 | SAMLEX AMERICA INC.
SECTION 3 | Installation
- First connect the L+ load cable to the correct pole of the right pair
of terminals on the solar charge controller (with the lamp symbol),
then connect the L– cable.
- Replace the load fuse or switch on the load.
4TH STEP: FINAL WORK
Fasten all cables with strain relief in the direct vicinity of the solar charge
controller(clearance of approx. 10 cm).
GROUNDING
The components in stand-alone systems do not have to be grounded –
this is not standard practice or may be prohibited by national regulations
(e.g.: DIN 57100 Part 410: Prohibition of grounding protective low voltage
circuits). Consult the technical manual for more information. In case
grounding is mandatory, ground ONLY the Negative Battery Terminal.
LIGHTNING PROTECTION
In systems subjected to an increased risk of overvoltage damage, we
recommend installing additional lightning protection / overvoltage
protection to reduce dropouts. Consult the technical manual for more
detailed information.
Indice
Lingue:
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