1
730.927 | 09.10
PHOTOVOLTAIK – PHOTOVOLTAICS – PHOTOVOLTAIQUE – FOTOVOLTAICA
Installation and
operating instructions
Solar charge controller
Solarix MPPT 2010
730.927 | 09.10
EN
Index
1. About these instructions ........................................................................
1.1 Applicability ............................................................................................
1.2 Users .......................................................................................................
1.3. Description of symbols ...........................................................................
2. Safety ......................................................................................................
2.1 Proper usage
...........................................................................................3
2.2 Improper usage ......................................................................................
2.3 General safety instructions .....................................................................
2.4 Other risks ..............................................................................................
2.5 Behaviour in the case of faults ...............................................................
3. Description .............................................................................................
3.1 Functions ................................................................................................
3.2 Structure .................................................................................................
3.3 LED displays ............................................................................................
4. Installation ..............................................................................................
4.1. Mounting the solar charge controller .....................................................
4.2 Connection .............................................................................................
5. Operation .............................................................................................
6. Maintenance .........................................................................................
7. Faults and remedies ..............................................................................
8. Technical data .......................................................................................
9. Legal guarantee ....................................................................................
3
3
3
3
3
3
4
4
4
5
5
6
7
7
8
8
11
12
13
16
17
2
730.927 | 09.10
1. About these instructions
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.
1.1 Applicability
This manual describes the installation, function, operation and maintenance of
the solar charge controller.
Further technical information is provided in a separate technical manual.
1.2 Users
These operating instructions are intended for end customers. A technical expert
must be consulted in cases of uncertainty.
1.3. Description of symbols
Safety instructions are identified as follows:
SIGNAL WORD
Type, source and consequences of the danger!
Measures for avoiding danger
Instructions relating to the functional safety of the system are in bold type.
2. Safety
2.1 Proper usage
The solar charge controller may only be used in PV systems for charging and
controlling lead-acid batteries with liquid or solid electrolyte in accordance
with these operating instructions and the charging specifications of the battery
manufacturer.
2.2 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 generators may
be connected.
Do not connect any defective or damaged measuring equipment.
730.927 | 09.10
3
2.3 General safety instructions
Follow the general and national safety and accident prevention regulations.
Never alter or remove the factory plates and identification labels.
Keep children away from PV systems.
Never open the device.
2.4 Other risks
Danger of fire and explosion
Do not use the solar charge controller in dusty environments, in the vicinity
of solvents or where inflammable gases and vapours can occur.
No open fires, flames or sparks in the vicinity of the batteries.
Ensure that the room is adequately ventilated.
Check the charging process regularly.
Follow the charging instructions of the battery manufacturer.
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.
2.5 Behaviour in the case of faults
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 fluid penetration.
•
When parts are loose.
•
In these cases immediately remove the solar charge controller from the bat-
tery and solar module.
4
730.927 | 09.10
3. Description
30
40
50
60
70
80
90
100
110
120
konv. Laderegler
MPPT
UBat
Umpp
Uoc
Solarzellen
10
20
30
40
50
60
70
80
90
100
110
120
UBat
Umpp
Uoc
Solarzellen
0
3.1 Functions
The solar charge controller
monitors the battery voltage,
•
controls the charging process,
•
controls the connection/disconnection of loads connected to the load output.
•
This optimises battery use and significantly extends its service life.
A battery charging algorithm protects the battery from harmful states. Activa-
tion of the three deep discharge functions (LVW, LVD and LVR) is dependent
upon the battery voltage.
3.1.1 MPP tracking
This solar charge controller meets the latest technological standards since it is
equipped with an optimal MPP tracking algorithm and thus can use at all times
the maximum available output of the solar module. You will find more detailed
documentation about MPP tracking in the technical manual; which can be accessed at www.stecasolar.com.
3.1.2 What is MPP tracking (MPPT)?
MPPT stands for "Maximum Power Point Tracking". This describes a process by
means of which the solar module is always operated at the point of maximum
possible power. Because the point the maximum power can vary depending
on the operating mode and the local conditions, and because it changes in the
course of the day, the term "tracking" is used, i.e. the tracking of this point.
3.1.3 When should charge controllers with MPP tracking
be used?
Number of solar cells
U
OC
U
mpp
U
Bat
MPPT
Standard charge
controller
730.927 | 09.10
5
Charge controllers with MPP trackers can be used for a wider range of modules
1
2
3
4
5
than those without MPPT. With an MPP tracker one is no longer dependent on
the module voltage and string size. The module voltage can deviate significantly from the battery voltage.
3.1.4 Notes on choosing suitable solar modules
This solar charge controller has a maximum input voltage of 100 V. If this is
exceeded even for a short time by the connected solar module, the solar charge
controller will be damaged beyond repair and can never be used again. This will
NOT constitute a guarantee claim, the charge controller must then be replaced
at the customer's expense.
The essential value for choosing a solar module is the open circuit voltage
(U_oc). The open circuit voltage of the solar module is dependent on the ambient temperature. Information on the open circuit voltage of the solar module
and on temperature dependence can be found in the data sheet of the solar
module. The lower the ambient temperature, the higher the open circuit voltage of the solar module.
The open circuit voltage at -20 C may not exceed the maximum input voltage.
CAUTION
If an open circuit voltage of more than 100 V is supplied to the connected solar
module, the controller will be destroyed. When selecting the solar module, it
is important to bear in mind that the open circuit voltage should never exceed
100 V over the entire working temperature range.
When using solar modules with a maximum open circuit voltage of between
75 and 100 V (over the entire temperature range), all installation steps must be
carried in accordance with protection class II.
3.2 Structure
6
The solar charge controller consists
of the following components:
Info LED
1.
4 LEDs for displaying the state of
2.
charge (red, yellow, green 1 and
green 2)
Terminal block for connecting
3.
the solar module
Terminal block for connecting
4.
the battery
Terminal block for connecting
5.
the loads
730.927 | 09.10
3.3 LED displays
LED Status Meaning
Info LED illuminates
Red LED flashes quickly battery empty
Yellow LED illuminates battery weak
1. green LED illuminates battery good
2. green LED
green
flashes red a fault exists (see "Faults and remedies")
flashes deep-discharge deactivation
flashes switch-on threshold after deep-discharge deacti-
illuminates battery full
flashes quickly battery full, charge regulation active,
normal operation
when the battery continues to be discharged
the deep-discharge deactivation is triggered
vation has not yet been reached
i.e. charging current reduced
4. Installation
WARNING
Danger of explosion from sparking! Danger of electric shock!
Solar modules generate electricity under incident light. The full voltage is
present, even when the incident light levels are low.
The solar charge controller may only be connected to the local loads and the
battery by trained personnel and in accordance with the applicable regulations.
Follow the installation and operating instructions for all components of the
PV system.
Ensure that no cables are damaged.
At a voltage of > 75 V, particularly with regard to module open circuit volt-
age (over the entire temperature range), the entire solar energy system must
be installed with protection class II.
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 (see
4.2.2).
730.927 | 09.10
7
4.1. Mounting the solar charge controller
4.1.1 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-flammable 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).
4.1.2 Fastening the solar charge controller
Mark the position of the solar charge controller fastening holes on the wall.
Drill 4 Ø 6 mm holes and insert dowels.
Fasten the solar charge controller to the wall with the cable openings facing
downwards, using 4 oval head screws M4x40 (DIN 7996).
4.2 Connection
4.2.1 Preparing the wiring
The cross section of the connection cables must be suitable for the currents which
occur.
Modulstrom Batteriestrom Laststrom Querschnitt AWG Isolation
18 A 20 A 10 A 10 mm
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 specified cable lengths are inadequate.
An additional 30 A external fuse (not provided) must be connected to the
battery connection cable, close to the battery pole.
The external fuse prevents dangerous situations due to cable short circuits.
2
8 85°C
8
730.927 | 09.10
4.2.2 Connection
2
1
3
WARNING
Danger of explosion from sparking! Danger of electric shock!
At a voltage of > 75 V, particularly with regard to module open circuit volt-
age (over the entire temperature range), the entire solar energy system must
be installed with protection class II.
1st step: connect the battery
CAUTION
The device will be destroyed if the battery is connected with the wrong polarity.
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 battery symbol).
Connect battery connection cable A+ to the positive pole of the battery.
Connect battery connection cable A– to the negative pole of the battery.
If the connection polarity is correct, the info LED illuminates green.
If necessary, remove any external fuse.
730.927 | 09.10
9
2nd step: connect the solar module
CAUTION
The connected modules may not exceed an open circuit voltage (VOC) of 100
V, even at extremely low temperatures.
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 mod-
ule 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
WARNING
Danger of explosion from sparking! Danger of electric shock!
At a voltage of > 75 V, particularly with regard to module open circuit volt-
age (over the entire temperature range), the entire solar energy system must
be installed with protection class II.
Notes
Connect loads that must not be deactivated by the solar charge
•
controller deep discharge protection, e.g. emergency lights or
radio connection, directly to the battery.
Loads with a higher current consumption than the device
•
output can be directly connected to the battery.
However, the solar charge controller deep discharge protection will no longer
intervene. Loads connected in this manner must also be separately fused. Loads
of this type can also be reliably connected via an additional output relay (e.g.
Steca PA EV 200 A).
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 control-
ler and the load.
10
730.927 | 09.10
First connect the L+ load cable to the correct pole of the right pair of ter-
minals 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).
4.2.3 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.
4.2.4 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.
5. Operation
The solar charge controller immediately begins operation once the battery is
connected or the external fuse is inserted.
The display of the solar charge controller shows the current operating mode.
User intervention or user settings are not required.
Protection functions
The following integrated protection functions of the solar charge controller
ensure that the battery is handled as gently as possible.
The following protection functions are part of the basic function of the controller:
overcharge protection
•
deep discharge protection
•
battery undervoltage protection
•
solar module reverse current protection
•
The following installation faults do not destroy the controller. After correcting the fault, the device will continue to operate correctly:
•
protection from solar module short circuits / incorrect solar module polar
ity
•
protection from short circuits at the load output or excessive load
current
730.927 | 09.10
-
11
protection from solar module overcurrent
•
•
protection from device overtemperature
•
protection from overvoltage at the load output
•
protection from the wrong connection sequence
6. Maintenance
The solar charge controller is maintenance-free. All components of the PV
system must be checked at least annually, according to the specifications of the
respective manufacturers.
Ensure adequate ventilation of the cooling element.
Check the cable strain relief.
Check that all cable connections are secure.
Tighten screws if necessary.
Terminal corrosion
12
730.927 | 09.10
7. Faults and remedies
Fault Cause Remedy
No display Battery voltage too low• Pre-charge the battery
Info LED flashes
red
Load cannot be
operated or only
for a short time
+
info LED flashes
red
The external fuse in the
• Replace the external fuse
battery connection cable
has blown.
Battery is not connected• Unclamp all connections
Battery is defective•
1.
Connect a (new) battery
2.
with the correct polarity
Reconnect the solar module
3.
and loads
Battery is connected with
• Device may be defective;
the wrong polarity
Return device to specialist
dealer
Charging interrupted due to
• Charging automatically
excessive charging current
continues as soon as the
charging current lies within
the permissible range
Optobus transfer faulty• Repeat programming
Battery voltage too low• Pre-charge the battery
Battery voltage too high• Check installation
Load output is switched
• Reduce load current, if
off due to excessive load
current
Load output is switched off
• Disconnect loads
due to short circuit at load
output
Load output is switched off
• The load output automatidue to overheating of the
solar charge controller
necessary switch off or
disconnect loads
Check loads
1.
Correct the cause of the
2.
short circuit
Reconnect loads
3.
cally switches on again once
the solar charge controller
has cooled down
Improve the cooling air
circulation
Remove any other heat
sources
Check the conditions of use
and the mounting location
730.927 | 09.10
13
Load cannot be
operated
+
info LED flashes
red
+
red battery LED
flashes
Load cannot be
operated
+
info LED flashes
red
+
2. green LED
flashes
Load cannot be
operated
+
info LED illumi-
nates green
Battery is not
charged
Battery display
jumps quickly
Load output is switched
• The load output automatioff due to too low battery
voltage
cally switched on again as
soon as the battery voltage
lies within the permissible
range
Pre-charge the battery
Equip loads directly con-
nected to the battery with
deep discharge protection
Check the battery and
replace if necessary
Load output is switched
• The load output automatioff due to excessive battery
voltage
cally switched on again as
soon as the battery voltage
lies within the permissible
range
External charging source is
• Check the external charging
not voltage-limited
source
If necessary, switch off
external charging sources
Defective load or installa-
• Connect load correctly
tion error
Replace load
Solar module not connected• Connect the solar module
Solar module connected
• Connect the solar module
with incorrect polarity
Short circuit at solar module
• Correct the cause of the
input
Incorrect solar module
• Use a solar module of the
voltage
Device overheated• Make sure the device is well
with the correct polarity
short circuit
specified voltage
ventilated
Solar module defective• Replace the solar module
Large pulse current• Tune the current consump-
tion to match the battery
capacity
Battery is defective• Replace the battery
14
730.927 | 09.10
Efficiency example:
90 %
91 %
92 %
93 %
94 %
95 %
96 %
97 %
98 %
99 %
100 %
400 W320 W280W200 W120 W85 W40 W15 W
730.927 | 09.10
15
8. Technical data
Characterisation of the operating behaviour
System voltage 12 V (24 V)
Rated output 250 W (500 W)
Max. efficiency > 98 %
Own consumption 10 mA
DC input side
MPP voltage 15 V (30 V) < U
Open circuit voltage solar module
(at minimum operating temperature)
**17 V ... 100 V (34 V ... 100 V)
Module current 18 A
DC output side
Charging current 20 A
Load current 10 A
End-of-charge voltage* 13.9 V (27.8 V)
Boost charge voltage* 14.4 V (28.8 V)
Equalisation charging* 14.7 V (29.4 V)
Reset voltage* (SOC / LVR) > 50 % / 12.5 V (25.0 V)
Deep discharge protection* (SOC / LVD) < 30 % / 11.5 V (23.0 V)
Application conditions
Ambient temperature -25 °C … +40 °C
Equipment and design
Terminal clamps (fine-wire / single wire) 16 mm2 / 25 mm2 - AWG 6 / 4
Degree of protection IP 32
Dimensions (X x Y x Z) 187 x 153 x 68 mm
Weight approx. 900 g
* see options
Technical data at 25 °C / 77 °F
** .
CAUTION
If an open circuit voltage of more than 100 V is supplied to the connected solar
module, the controller will be destroyed. When selecting the solar module, it
is important to bear in mind that the open circuit voltage should never exceed
100 V over the entire working temperature range.
When using solar modules with a maximum open circuit voltage of between
75 and 100 V (over the entire temperature range), all installation steps must be
carried in accordance with protection class II.
16
MPPT 2010
module
<< 100 V
730.927 | 09.10
NOTE:
Technical data that varies from the above is given on a device label. Subject to
change without notice.
9. Legal guarantee
In accordance with German statutory regulations, there is a 2-year legal guarantee on this product for the customer.
The seller will remove all manufacturing and material faults that occur in the
product during the legal guarantee period and affect the correct functioning
of the product. Natural wear and tear does not constitute a malfunction. No
legal guarantee can be offered if the fault can be attributed to third parties,
unprofessional installation or commissioning, incorrect or negligent handling,
improper transport, excessive loading, use of improper equipment, faulty
construction work, unsuitable construction location or improper operation or
use. Legal guarantee claims shall only be accepted if notification of the fault is
provided immediately after it is discovered. Guarantee claims are to be directed
to the seller.
The seller must be informed before guarantee claims are processed. For
processing a guarantee claim an exact fault description and the invoice /
delivery note must be provided.
The seller can choose to fulfil the legal guarantee either by repair or replacement. If the product can neither be repaired nor replaced, or if this does not occur within a suitable period in spite of the specification of an extension period
in writing by the customer, the reduction in value caused by the fault shall be
replaced, or, if this is not sufficient taking the interests of the end customer into
consideration, the contract is cancelled.
Any further claims against the seller based on this legal guarantee obligation, in
particular claims for damages due to lost profit, loss-of-use or indirect damages
are excluded, unless liability is obligatory by law.
730.927 | 09.10
17
18
730.927 | 09.10
730.927 | 09.10
19
730927
Loading...