PWM1020CC-D Dual Battery PWM Charge Controller Manual RNG Group Inc. (Renogy) 14288 Central Ave., Suite A Chino, CA 91710 1-800-330-8678 Contents 1. Important Safety Information 2 2. General Information 3 2.1 Overview 3 2.2 PWM Technology 3 2.3 Product Description 4 3. Installation Instructions 5 3.1 General Installation Notes 5 3.2 Mounting 5 3.3 Wiring 6 4. Settings 8 4.1 Battery Type 8 4.2 Charging Priority 8 4.3 Charging frequency 9 5. LED Indicators 5.1 Battery Indicators 9 9 6. Troubleshooting 10 7. Technical Specifications 10 7.1 Charge Controller 10 7.2 Battery Parameters 10 7.3 Dimensions 11 8. Warranty 12 1 1. Important Safety Information Save These Instructions This manual contains important safety, installation and operating instructions for the PWM1020CC-D controller. The following symbols are used throughout this manual to indicate potentially dangerous conditions or mark important safety instructions. Please take care when meeting these symbols. 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. General Safety Information Read all of the instructions and cautions in the manual before beginning installation. There are no user serviceable parts inside the PWM1020CC-D. Do not disassemble or attempt to repair the controller. Disconnect the solar module and fuse/breakers near to battery before installing or adjusting the PWM1020CC-D. Install external fuses/breakers as required. Do not allow water to enter the controller. Confirm that the power connections are tightened to avoid excessive heating from a loose connection. Although the PWM1020CC-D controller is very simple to configure and use, please take your time to read the operator's manual and become familiar with the controller. This will help you make full use of all the functions and improve your solar PV system. 2 2. General Information 2.1 Overview The Renogy PWM1020CC-D features dual battery charging capability making it great for RVs, caravans, and boats. With its advanced PWM charging technology, your batteries will be protected from discharging and over-charging. The PWM1020CC-D has the following features: 12V / 24V auto recognition High efficient PWM charging, increase the battery lifetime and improve the solar system performance. Dual battery charging Sealed, Gel and Flooded battery option Remote Temperature Sensor (sold separately) Corrects the charging and discharging parameters automatically based on temperature compensation, improving battery lifetime. This controller is specifically designed for mobile off-grid applications supporting 12V deep cycle battery varieties such as sealed lead acid, gel, and flooded. The built-in RJ45 connector gives you the freedom of monitor the voltage, current and temperature of your system via MT-1 remote meter (sold separately). 2.2 PWM Technology The charge controller is based on advanced Pulse Width Modulation (PWM) charging technology. With a charging range of 0-100%, it can charge a battery quickly and safely under any condition of the solar photovoltaic system. When charging, the controller utilizes automatic duty cycle conversion, creating pulses of current to charge the battery. Intermissions make the oxygen and hydrogen generated by chemical reactions combine again and become absorbed. This process can naturally eliminate both concentration polarization and ohm polarization, and can also reduce the internal pressure of the battery; thus, the battery will absorb more power. Pulse current charging mode allows the battery more time to react, which reduces the gassing volume and makes the battery improve the acceptance rate of the charging current. 3 2.3 Product Description Local Temp. Sensor Setting Indicator LEDs and Digital Display Batt #1 Status LED SET Button Batt #2 Status LED Remote Temp. Sensor (Sold separately) Remote Meter Connection (RJ45) Figure 2-1 Charge Controller detailed description Remote Temperature Sensor (RTS) A connection point for RTS (optional) to remotely monitor battery temperature. Local Temperature Sensor Measures ambient temperature. Battery regulation is adjusted accordingly. Battery 1 Status LED Provides charging & battery status and errors Battery 2 Status LED Provides charging & battery status and errors Remote meter connection A communication port for the remote meter MT-1 (sold separately). 4 3. Installation Instructions 3.1 General Installation Notes Read through the entire installation section first 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. Uses insulated tools and avoid placing metal objects near the batteries. Explosive battery gasses may be present during charging. Be certain there is sufficient ventilation to release the gasses. Avoid direct sunlight and 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 fire. Ensure tight connections and use cable clamps to secure cables and prevent them from swaying in mobile applications. Use with Gel, Sealed or Flooded batteries only. Battery connection may be wired to one battery or a bank of batteries. The following instructions refer to a single battery, but it is implied that the battery connection can be made to either one battery or a group of batteries. 3.2 Mounting NOTE: When mounting the PWM1020CC-D, ensure free airflow through the controller heat sink fins. There should be at least 100mm of clearance above and below the controller to allow for cooling. If mounted in an enclosure, ventilation is highly recommended. WARNING: Risk of explosion! Never install the PWM1020CC-D in a sealed enclose with flooded batteries! Do not install in a confined area where battery gas can accumulate. Step 1: Choose mounting location Locate a vertical or horizontal surface protected from direct sunlight, high temperature, and water. Step 2: Check for Clearance Place the PWM1020CC-D in the location where it will be mounted. Verify that there is sufficient room to run wires and that there is sufficient room above and below the controller for airflow. 5 Step 3: Mark Holes Use a pencil or pen to mark the four (4) mounting hole locations on the mounting surface. Step 4: Drill Holes Remove the controller and drill four sizeable holes in the marked locations. Step 5: Secure Controller Place the controller on the surface and align the mounting holes with the drilled holes in step 4. Secure the controller in place using mounting screws. 3.3 Wiring NOTE: A recommended connection order has been provided for maximum safety during installation. Figure 3-1 shows the correct order. CAUTION: For mobile applications, be sure to secure all wiring. Use cable clamps to prevent cables from swaying when the vehicle is in motion. Unsecured cables create loose and resistive connections, which may lead to excessive heating and/or fire. Remote Meter Connection (RJ45) Remote Temp. Sensor Figure 3-1 Connection order 6 Step 1 Connect Battery 1: Refer to Figure 3-1. Connect the negative terminal of Battery 1 to the negative terminal of the charge controller under the Battery 1 logo. Then connect the positive terminal of Battery 1 to the positive terminal of the charge controller under the Battery 1 logo. Step 2 Connect Battery 2: Repeat the process described in Step 1 for Battery 2. Figure 3-1 shows the connections. If you are not planning on installing a second battery you can skip this step. Step 3 Connect the solar panel(s): Refer to Figure 3-1.Connect the negative PV lead of the solar panel to the negative terminal of the charge controller under the solar array logo. Then connect the positive lead of solar to the positive terminal of the charge controller under the solar array logo. Make sure the solar module(s) voltage and current do not exceed the ratings of the charge controller. Step 4 Connect the Remote Temperature Sensor (Optional): If you purchased the remote temperature for your batteries, you can connect it in the remote temperature terminals depicted in Figure 3-1. If you are not planning on using this sensor, you can skip this step. Note: When the RTS is not present, the controller will calculate the data from the local temperature sensor. The controller will obtain data from RTS automatically when present. Step 5 Connect Remote Meter MT-1 (Optional): The remote meter MT-1 is sold separately and can be connected in the RJ45 communication port. Again, if you are not planning on using this meter, you can skip this step. Once you finish the installation, the charge controller should be charging the battery or batteries automatically with the current preset values. To adjust these settings, please read Section 4. 7 4. Settings 4.1 Battery Type To select the battery type press the SET button on the controller a few times until the “Battery Type” LED lights up. Press the setting button again and hold it for 5 seconds until the digits start flashing. Press the setting button again to choose the battery type as described in Table 4-1. Leave it in this position, and it will stop flashing after a few seconds. The controller has recorded the battery setting. Battery type Sealed lead acid battery Gel battery Flooded battery Digital display 1 2 3 Table 4-1 Battery type setting 4.2 Charging Priority To adjust the charging priority of the batteries press the setting button on the controller a few times until the “Charging priority” LED lights up. Press the setting button again and hold it for 5 seconds until the digits start flashing. Press the setting button again to choose the percentage level listed on Table 4-2. Leave it in this position, and it will stop flashing after a few seconds. The controller has recorded the Charging priority setting. Number 0 1 2 3 4 5 6 7 8 9 Battery #1 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% (pre-set) Battery #2 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% Table 4-2 Charging priority settings Note: In the normal charging conditions, the controller will distribute the charge for the selected setting. When Battery 1 is fully charged, charge will be diverted to Battery 2, and return to the no. 4 charging priority setting automatically when Battery 1 is low on voltage. When the controller detects that Battery 1 is the only battery connected, all the charge will go to the Battery 1 automatically. 8 4.3 Charging frequency To change the charging frequency press the setting button on the controller a few times until the “Charging frequency” LED lights up. Press the setting button again and hold it for 5 seconds until the digits start flashing. Press the setting button again to choose a charging frequency listed on Table 4-3. Leave it in this position, and it will stop flashing after a few seconds. The controller has recorded the Charging priority setting. Number 0 1 2 PWM Charging Frequency 25 Hz (pre-set) 50 Hz 100 Hz Table 4-3 Charging frequency settings 5. LED Indicators Battery #1 Status LED Indicator Battery #2 Status LED Indicator Figure 5-2 Charge controller LED indicators 5.1 Battery Indicators The LED indicator shown in Figure 5-2 will turn on whenever sunlight is available for battery charging. Under normal charging conditions, the charging LED will lit red at all times Color Red Red Red Red Red Indication Solid Slowly Flashing Frequent Flashing Quickly Flashing Off Operating State Charging Full Not Charging* Short-circuit* Battery not connected/Overvoltage* Table 5-1 Battery LED indicators *Please refer to Section 6 for troubleshooting 9 6. Troubleshooting Check all connections to ensure they are secure and clean Check polarity of the battery connection and make sure the battery generates at least 6V Ensure the solar panels are exposed to sufficient light – ideally position them to face the sun directly If charge controller states that there is short-circuit, please ensure that the panels are connected correctly, and that the wires at the terminals are not touching each other. If one of the status LED is off and a battery is connected, check that the battery terminals have good connection and that the polarity is correct. Check that the voltage doesn’t exceed the rated input voltage shown in Table 7-1 on Section 7. If the charge controller is not charging, ensure that the panel’s polarity, and check for loose connections. 7. Technical Specifications 7.1 Charge Controller Description Nominal System Voltage Rated Charge Current Rated Discharge Current Maximum Battery Voltage Max. Solar Input Voltage Max. PV Input Power (10A Model) Max. PV Input Power (20A Model) Operating Temperature Self-consumption Terminals Parameter 12VDC/24VDC Auto recognition 10A 10A 30V 30V (12V), 55V (24V) 120W (12V), 240W (24V) 240W (12V), 480W (24V) −31°F to +131°F 4mA (idle), 10mA (charging) 4mm2 Table 7-1 Charge controller parameters 7.2 Battery Parameters (Temp: 25°C) Battery Charging setting Equalization Voltage Boost Voltage Float Voltage Boost Duration Control Parameter Gel 14.8V 14.6V 13.7V 30 min. Sealed 14.4V 14.2V 13.7V 30 min. Flooded 14.6V 14.4V 13.7V 30 min. Table 7-2 Battery Parameters Note: Data is for 12V, for 24V, please use 2x. 10 7.3 Dimensions [mm (inches)] 11 7. Warranty By acquiring the products of RNG Group Inc. ("Renogy"), you have purchased quality. As a sign of confidence in this quality, we are pleased to grant you the following warranties and guarantees for our photovoltaic products. LIMITED WARRATNY: Renogy warrants this product will be free from defects in material and manufacturer for the following periods from the date of purchase: One (1) year on charge controllers This warranty extends only to the original purchaser. The Customer’s sole and exclusive remedy and the entire liability of Renogy, its suppliers and affiliates for breach of the warranty is, either to replace the Product or component parts or to refund the purchase price of the Product. This warranty does not cover labor. Repaired or replaced products are warranted for the remainder of the original warranty period only. No employee, agent, dealer or other person is authorized to give any warranties on behalf of Renogy not expressly set forth in this limited warranty. The warranty does not cover failures result from incorrect handling, product modifications, installation, conversion or additions, supplements, operation, natural elements, excessive or deficient energy supply, chemicals, the effect of solid bodies or deliberate damage. If Renogy determines that the problem with the Product is not due to a manufacturing defect in Renogy’s workmanship or materials, or otherwise does not qualify for warranty repair, then the Customer will be responsible for the costs of all necessary repairs and expenses incurred by Renogy. The warranty shall be asserted with Renogy in writing enclosing a copy of the invoice and a description of the defect/loss of performance within the warranty period. Renogy shall accept no returns of modules without the previous written request for this. Within five (5) business days of the date of notification, Renogy will provide the Customer with an RMA number and the location to which the Customer must return the defective Product. Any Product returned for warranty service shall be shipped at the expense and risk of the Customer. The Customer must return the entire Product (or, if authorized by Renogy, the defective component parts), within fifteen (15) days after issuance of the RMA number. Renogy will be under no obligation to accept any returned Product that does not have a valid RMA number. All parts that Renogy replaces shall become Renogy’s property on the date Renogy ships the repaired Product or part back to the Customer. Renogy will use all reasonable efforts within thirty (30) days of receipt of the defective Product to repair or replace such Product. If a warranty claim is invalid for any reason, the Customer will be charged at Renogy’s then-current rates for services performed and will be charged for all necessary repairs and expense incurred by Renogy. If Renogy determines that a warranty claim is valid, it will ship the repaired or replaced Product to Customer at Renogy’s cost. RENOGY MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 12 OR ANY IMPLIED WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOMER OR USAGE OF TRADE. LIMITATION OF LIABILITY UNDER NO CIRCUMSTANCES WILL RENOGY OR ITS AFFILIATES OR SUPPLIERS BE LIABLE OR RESPONSIBLE FOR ANY LOSS OF USE, INTERRUPTION OF BUSINESS, LOST PROFITS, LOST DATA, OR INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY KIND REGARDLESS OF THE FORM OF ACTION, WHETHER IN CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF RENOGY OR ITS AFFILIATE OR SUPPLIER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Some states do not allow the exclusion or limitation of incidental or consequential damages, so these limitations may not apply to you. Neither Renogy nor its affiliates or suppliers will be held liable or responsible for any damage or loss to any items or products connected to, powered by or otherwise attached to the Product. The total cumulative liability to Customer, from all causes of action and all theories of liability, will be limited to and will not exceed the purchase price of the Product paid by Customer. This warranty gives you specific legal rights and you may also have other legal rights that vary from state to state. 13
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