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Samlexsolar SCC-30AB Owner's Manual

Manual is about: 30 Amp Solar Charge Controller

Summary of SCC-30AB

  • Page 1

    30 amp solar charge controller scc-30ab owner's manual please read this manual before operating your charge controller..

  • Page 2

    2 1. Safety instructions .............................................................................................. 3 2. General description of pv / solar system .......................................................... 5 3. General information - batteries .........................................

  • Page 3: General

    3 1 safety instructions please read these instructions before installing or operating the charge controller to prevent personal injury or damage to the charge controller. General installation and wiring compliance • installation and wiring must comply with the local and national electrical codes and...

  • Page 4: Charge Controller Related

    4 1 safety instructions • 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. • remove metal items like rings, bracelets and watches when working with batteries. The batteries can ...

  • Page 5: What Is Photovoltaic (Pv)?

    5 2 general description of pv / solar system what is photovoltaic (pv)? The word ‘photo-voltaic’ is derived from two different words; the word ‘photos’, from the greek, meaning light and the word ‘voltaic’ developed from the name of the italian scientist, volta, who studied electricity. This explain...

  • Page 6: Grid-Tied Pv / Solar System

    6 2 general description of pv / solar system grid-tied pv / solar system fig. 2.2 shows a block diagram of a typical grid-tied pv / solar system. In this system, the solar panels (modules) / arrays directly feed to an inverter and the inverter is connected to an electricity transmission and distribu...

  • Page 7: Pv / Solar Cell

    7 2 general description of pv / solar system pv / solar cell 12cm fig. 2.3. Pv / solar cell the basic element of a pv system is the photovoltaic (pv) cell, also called a solar cell. An example of a pv / solar cell made of mono-crystalline silicon is shown in fig. 2.3. This single pv / solar cell is ...

  • Page 8

    8 2 general description of pv / solar system when light enters the pv / solar cell, some of the “photons” (packets of electro- magnetic wave energy) from the light energy are absorbed by the semiconductor atoms. The energy of the absorbed light is transferred to the negatively charged electrons in t...

  • Page 9

    9 2 general description of pv / solar system the materials used in pv / solar cells have different spectral responses to incident light, and exhibit a varying sensitivity with respect to the absorption of photons at given wavelengths. Each semiconductor material will have an incident radiation thres...

  • Page 10: Pv Cell Types

    10 2 general description of pv / solar system pv cell types pv cells are most commonly made of silicon, and come in two varieties, crystalline and thin-film type, as detailed in table 2.1 cell types include mono-crystalline silicon, poly-crystalline silicon, amorphous silicon (a-si), gallium arsenid...

  • Page 11

    11 2 general description of pv / solar system cell module array figure 2.5. Pv cell, module and array the cells are very thin and fragile so they are sandwiched between a transparent front sheet, usually glass, and a backing sheet, usually glass or a type of tough plastic. This protects them from br...

  • Page 12: Bypass Diodes

    12 2 general description of pv / solar system bypass diodes as mentioned, pv / solar cells are wired in series and in parallel to form a pv / solar panel (module). The number of series cells indicates the voltage of the panel (module), whereas the number of parallel cells indicates the current. If m...

  • Page 13

    13 2 general description of pv/solar system a current (i) versus voltage (v) curve of a pv / solar module (“i-v” curve) shows the possible combinations of its current and voltage outputs. A typical i-v curve for a 12 v module is shown at fig. 2.8. The power in a dc electrical circuit is the product ...

  • Page 14

    14 2 general description of pv/solar system the rated power of the pv / solar module in watts (pmax) is derived from the above values of voltage vmp and current imp at this maximum power point (mpp): • rated power in watts, pmax = vmp x imp example of i-v curve and ratings of a 12 v pv / solar panel...

  • Page 15: Types of Batteries

    15 3 general information: batteries types of batteries there are several different types of battery chemistry including liquid lead-acid, nickel-iron (nife), nickel-cadmium (ni-cd), alkaline, and gel-cell. Batteries are either sealed or vented. Simply, there are only two principal types of batteries...

  • Page 16: The Lead-Acid Batteries

    16 3 general information: batteries temperature and discharge rate for a high capacity lead acid cell. Note that the cell voltage diminishes in direct proportion to the remaining capacity. Fig 3.1 soc versus open circuit voltage the lead-acid batteries a basic equivalent circuit of the lead-acid bat...

  • Page 17

    17 3 general information: batteries furthermore, it is to consider that these parameters depend also on the current direction (charging or discharge). When the battery were at rest or under open-circuit condition v b = v e . When current is drawn from the battery, the voltage will be lower than v e ...

  • Page 18: Gassing

    18 3 general information: batteries fig 3.3: discharge characteristic curves figure 3.3 shows the discharge profile of a typical battery type at several constant current rates. The typical end-of-discharge voltage at these discharge rates can also be noticed where the voltage starts to drop steeply....

  • Page 19: Freezing of Electrolyte

    19 3 general information: batteries after the gassing voltage is exceeded, voltage stays approximately constant. The whole charging current during this period results in h 2 and o 2 , which is defined as loss. Freezing of electrolyte for applications with low ambient temperature, the lead-acid batte...

  • Page 20: Battery Capacity

    20 3 general information: batteries figure 3-5: cycle life as a function of deep of discharge battery capacity previously, the storage capacity of a battery is expressed in ah (ampere-hours) showing how many hours a certain current can be taken from the charged battery until the battery is discharge...

  • Page 21

    21 3 general information: batteries besides, battery capacity is also affected by the temperature: it falls by about 1 % per degree below about 20 °c. Moreover, extreme high temperatures accelerate aging, self-discharge and electrolyte usage. Requirements for solar batteries typical requirements for...

  • Page 22

    22 3 general information: batteries the voltage efficiency is determined by the average discharge voltage (v d ) and average charging voltage (v c ). V c is lower than v d particularly by internal resistance of the battery. η v =v d / v c (3.5) the overall efficiency (η s ) should be as high as poss...

  • Page 23

    23 3 general information: batteries since many values are dependent on charge and discharge conditions, they have not been standardized for pv applications and for test purposes until now. Therefore, the comparison between batteries and selection of the most suitable one for each application are not...

  • Page 24: Features

    24 4 introduction & features the scc-30ab is a 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 can be used for 12v or 24v systems for solar charging . The pwm battery charg...

  • Page 25: Pwm Battery Charging

    25 4 introduction & features the individual or combined effects of sun peak hour changes, poor charge control and the daily load changes can be potentially damaging to the battery. Cheaper charge control strategies such as simple on/off pv array shedding (non pwm control) will generally provide the ...

  • Page 26: Battery Charging Algorithm

    26 4 introduction & features pv systems and associated cabling are installed in exposed locations and hence, they are more prone to the damaging effects of high voltage transients. Large pv systems employ numerous lightning protection devices like lightning rods, surge suppressors, shielded cables e...

  • Page 27

    27 4 introduction & features four stages of solar charging fig. 4.1 represents the 4 stages of charging used in the scc-30ab v o lt a g e time night night 4 float 3 equalize 2 pwm absorption 1 bulk charging fig. 4.1 solar charging stages 1. Bulk charging: in this stage, the battery will accept all t...

  • Page 28: Equalization

    28 4 introduction & features equalization 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 partiall...

  • Page 29: When to Equalize

    29 4 introduction & features 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 flooded batteries every 1 to 3 months or ever...

  • Page 30: General

    30 5 construction, layout & controls general scc-30ab is designed for flush mounting on a wall / panel. The controls and indications are built on the front panel face plate that has 4 countersunk holes for flush mounting (fig. 5.1). All the electronics, dip switches for settings, terminal strip for ...

  • Page 31: Controls & Indications

    31 5 construction, layout & controls controls & indications the description and the functions of the controls and indications are given below: front panel charge status led indications led state indication blinking green charging is in the state of bulk or absorption depending upon the number of bli...

  • Page 32

    32 5 construction, layout & controls • display of bulk and float voltage setting value • display of equalization voltage, equalization time and equalization interval • display of heat sink (the front panel metal plate acts as the heat sink) temperature and battery temperature through the optional ba...

  • Page 33: Fault Messages

    33 5 construction, layout & controls fault messages the lcd displays might have the following fault messages when scc-30ab stops operating. Table 5.1. Fault messages display description cause of fault alarm: oc over current over current the current exceeds 45 a alarm: ot heat sink over temperature h...

  • Page 34: Warning!

    34 6 installation & operation warning! This unit will be damaged if the battery is connected in reverse polarity. Ensure that the battery + and - wires are correctly connected before proceeding. Damage due to reverse battery connection is not covered under warranty! Installation steps this section p...

  • Page 35

    35 6 installation & operation 25 mm 25 mm 25 mm 25 mm 25 mm 25 mm 25 mm 25 mm 6 mm 6 mm 6 mm 6 mm 190 mm 108 mm - cut the wall / panel along the dotted line with a jig saw. - this will create a pocket in the wall / panel for flush mounting of charge controller scc-30ab. Outline of the front panel fi...

  • Page 36: Dip Switch Settings

    36 6 installation & operation 6. Connect the solar panel (module)/array next. The green led indicator will light if the solar panel (module)/array is connected during the daytime and the solar panel (module)/array is wired correctly. • remember that the solar panel (module)/array will generate power...

  • Page 37

    37 6 installation & operation standard battery charging programs the scc-30ab provides 8 standard battery charging algorithms (programs) that are selected with the dip switches. These standard algorithms are suitable for lead-acid batteries ranging from sealed (gel, agm, maintenance free) to flooded...

  • Page 38: Equalization Procedure

    38 6 installation & operation equalization procedure standard equalization programs both automatic and manual equalizations can be performed using the standard charging programs. Manual equalization the scc-30ab is shipped with the dip switch set for manual equalization only. This is to avoid an une...

  • Page 39: Pwm Absorption

    39 6 installation & operation temperature compensated battery charging an optional battery temperature sensor (bts) is available for temperature compensated battery charging. The bts consists of a temperature sensing probe that is installed on the + battery post. A pair of 10 ft. Wires (marked + & -...

  • Page 40

    40 6 installation & operation variations in battery temperature can affect charging, battery capacity, and battery life. The greater the range of battery temperatures, the greater the impact on the battery. For example, if the temperature falls to 10°c (50°f) this 15°c (27°f) change in temperature w...

  • Page 41

    41 7 troubleshooting the scc-30ab is very rugged and designed for the most extreme operating conditions. Most pv system problems will be caused by connections, voltage drops, and loads. Troubleshooting the scc-30ab controller is simple. Some basic troubleshooting procedures are listed below. Protect...

  • Page 42

    42 7 troubleshooting symptom 2. Battery voltage is too high • first check the operating conditions to confirm that the voltage is higher than specifications. • check that the proper battery charging algorithm (program) has been selected by dip switches. • check that all wire connections in the syste...

  • Page 43

    43 8 specifications system nominal system voltage 12 vdc or 24 vdc (selected by dip switch) current rating 30 a set point accuracy + / - 50 mv minimum voltage to start the micro- controller, activate protections and guide operation 9 vdc total self consumption current 50 ma input side (solar panel /...

  • Page 44: 5 Year Limited Warranty

    44 9 warranty 5 year limited warranty scc-30ab manufactured by samlex america, inc. (the “warrantor”) is warranted to be free from defects in workmanship and materials under normal use and service. This warranty is in effect for 5 years from the date of purchase by the user (the “purchaser”). For a ...

  • Page 45

    45 9 warranty there shall be no responsibility or liability whatsoever on the part of the warrantor or its employees and representatives for injury to any persons, or damage to person or persons, or damage to property, or loss of income or profit, or any other consequential or resulting damage which...

  • Page 46

    46 notes.

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    47 notes.

  • Page 48

    110-17 fawcett rd coquitlam, b.C. Canada v3k 6v2 t: 604 525 3836 f: 604 525 5221 tf: 1 800 561 5885 e-mail: samlex@samlexamerica.Com website: www.Samlexamerica.Com scc-30ab_charge_controller_manual_sep2010