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MPT-3024

30A - 12/24VDC MPPT

Photovoltaic Charge Controller

Installation Guide

and

Owner’s Manual

Rogue Power Technologies, Ashland, OR 97520

www.roguepowertech.com

Содержание MPT-3024

Страница 1: ...1 MPT 3024 30A 12 24VDC MPPT Photovoltaic Charge Controller Installation Guide and Owner s Manual Rogue Power Technologies Ashland OR 97520 www roguepowertech com Copyright 2011 Revision C1 05 18 11...

Страница 2: ...ation improper wiring etc Damage caused by lightning or electrostatic discharge Damage caused by abuse neglect or accident Any unit which has been modified or repaired by anyone other than RPT Damage...

Страница 3: ...11 1 Mounting and thermal considerations 11 2 Wiring 11 3 Grounding 11 4 Disconnects and overcurrent protection 11 5 External surge protection 11 6 External noise filtering 11 7 Remote temperature sen...

Страница 4: ...ltage drop for 24V 4 3 1 Typical voltage drop and power loss 4 4 1 Maximum PV array input 12 2 1 Default values for setpoints 17 1 1 Fault messages Graphs 5 2 1 Typical day of operation 6 1 1 Typical...

Страница 5: ...y bank or a 12 volt nominal PV array with a 12 volt battery bank It will not operate with a PV array that generates less voltage than that of the battery it s charging Output current is electronically...

Страница 6: ...tice the following symbols They are meant to alert you of potential hazards cautions or information that will require your attention as you install and use the MPT 3024 Read the notations accompanying...

Страница 7: ...at to weld metal and cause severe burns Be careful when using metal tools around batteries and remove all metal jewelry before commencing work 5 Never attempt to move or relocate a battery without fir...

Страница 8: ...battery full FLOT float mode EQLZ equalize mode 7 Accumulated PV Watt hours kWh if greater than 999Wh 8 Accumulated Amp hours as delivered to BATTERY 9 Battery temperature if sensor is connected 10 13...

Страница 9: ...array and battery bank to the MPT 3024 should be of a heavy enough gauge so as not to introduce excessive voltage drops and or current limitations At higher currents light gauge wire may introduce a...

Страница 10: ...02 10A 15 24 37 60 95 151 15A 10 16 25 40 63 101 20A 7 12 19 30 47 75 25A 9 15 24 38 60 30A 8 12 20 32 50 Table 4 2 1 Maximum distance in feet for wire at a specific gauge and cur rent which will resu...

Страница 11: ...fourth of the power loss for any given wire gauge or distance See Table 4 3 1 for an example of 24 volt versus 12 volt losses The MPT 3024 will charge either a 12 volt or a 24 volt battery bank from...

Страница 12: ...g your needs The MPT 3024 will charge battery banks given any amount of current provided up to the maximum of 30 amps but may not reach setpoints regularly and may not equalize properly if current is...

Страница 13: ...Volts Vmp PV Amps Isc Battery Amps Battery Volts Nominal PV Bat 1 864 34 8 25 30 28 8 24 24 2 835 34 8 24 29 28 8 24 24 3 660 34 8 19 30 22 0 24 24 4 432 34 8 12 4 30 14 4 24 12 5 330 34 8 9 5 30 11 0...

Страница 14: ...tage approach that closely monitors the battery s voltage and the current being drawn by the battery during the charging process These chargers select a charging mode which best suits the condition of...

Страница 15: ...oller to revert to a previous mode because the battery voltage begins to fall below the float setpoint Loads that are being powered during the charging procedure will cause power that would otherwise...

Страница 16: ...and will once more begin charging up to the absorb setpoint The absorb timer will be reset and will begin counting down again when the controller next enters the absorb mode This transition between MP...

Страница 17: ...voltage unless triggered back into MPPT mode as described above Float cannot be disabled while the charger is presently operating in float mode 5 SLEEP The controller will enter sleep mode when the P...

Страница 18: ...a constant current over a wide range of voltages For this reason it s usually thought of as a constant current source By contrast a battery will provide a relatively constant voltage over a wide range...

Страница 19: ...19 Figure 5 2 1 A typical day of operation for the MPT 3024 with 24 volt nominal array and 12 volt battery bank...

Страница 20: ...att loss The MPT 3024 is capable of operating the array at its maximum power point voltage while charging a battery of substantially less voltage It does this by rapidly switching on and off many thou...

Страница 21: ...a 58 improvement In reality external factors such as array temperature and the voltage drop in wiring will produce boost of less than these idealized amounts The efficiency of the charger will also h...

Страница 22: ...of the charger is altered so that it causes the input of the charger to match the corrected power point of the array This function is fully automatic and does not require any experimentation or guessw...

Страница 23: ...23 Figure 6 1 2 Efficiency curves for various PV battery combinations at 25o C...

Страница 24: ...of the battery capacity is reduced and there is a risk of the battery freezing at very low temperatures A higher temperature increases battery capacity but will shorten its life Batteries which regula...

Страница 25: ...xample when the battery voltage meets a predeter mined setpoint as adjusted by the user When the battery voltage falls below this setpoint the output turns off For greatest flexibility the output is a...

Страница 26: ...nor is it to be installed outdoors in unventilated enclosures inside a wall cavity in direct sunlight or near a source of heat stove radiator register etc Any of these situations may cause controller...

Страница 27: ...he ribbon cable from the front panel When reconnect ing make certain that key on connector aligns with keyslot in the socket Figure 11 1 1 Removing the four screws that secure the front panel to the b...

Страница 28: ...struck S Each connection to the terminal block of the MPT 3024 will accept up to 4 gauge wire however for ease of installation and compliance with code it s best to use wire no larger than 6 gauge wit...

Страница 29: ...29 Figure 11 2 2 Suggested wiring diagram...

Страница 30: ...rior to connecting them to the MPT 3024 double checking them again before any external disconnects are moved to the ON position and ensuring that all wires are connected to their proper terminals Reve...

Страница 31: ...erminals to ground Additional external protection is highly recommended if your PV array will be roof mounted or otherwise subject to an increased likelihood of lightning strike Damage from lightning...

Страница 32: ...r s jack may damage the MPT 3024 and will void the warranty 11 8 Remote battery voltage sense connection A 15 foot twisted pair cable is included with the MPT 3024 One end of this cable has tinned lea...

Страница 33: ...fan to the auxiliary terminal block on the controller Do not use a device with the Auxiliary Output that will exceed the 5 amp rating of the auxiliary relay in the controller Doing so may damage the c...

Страница 34: ...internal circuitry from the battery bank it will not power up until the battery power has been connected S The MPT 3024 requires at least 6 volts of battery power to initialize and will not begin char...

Страница 35: ...o the absorb mode where the battery is held at the absorb setpoint voltage for a time The FLOAT setpoint defines the voltage at which the battery is kept charged indefinitely upon completion of the ab...

Страница 36: ...36 Figure 12 1 1 Operational flowchart...

Страница 37: ...auxiliary output relay will turn on This function operates on a rising voltage the output will turn on as the voltage rises to meet the sepoint and it will turn off as the battery voltage drops to ap...

Страница 38: ...ted to the absorb or MPPT modes will not take effect until the next time the charger enters those modes 13 1 Backlight and autoexit features The backlight may be turned on or off at any time during ch...

Страница 39: ...n non volatile memory which is retained even when power to the controller is off The data log is updated upon entry into sleep mode In some instances during wakeup in the morning and during shutdown a...

Страница 40: ...highest power that was measured during operation for the period represented by each entry FULL will be followed by either a Y or an N indicating whether or not the batteries were fully charged for th...

Страница 41: ...cessful 1 Equalization should be attempted early on a bright sunny day with batteries at or near full charge Cloudy days will likely not produce enough charging current to bring the batteries up to th...

Страница 42: ...rcent sign to the right With adequate charging current the equalize setpoint will soon be met and the controller will enter the equalize mode EQLZ will replace MPPT on the display Upon entering the eq...

Страница 43: ...ch source of power will require a charge controller that is specifically suited for the type of source to which it s connected Consult a system installer for more information For high power systems wi...

Страница 44: ...ert will appear on the LCD display so that the user can take appropriate action before resuming operation of the controller Table 17 1 1 lists possible fault conditions their correspond ing alerts and...

Страница 45: ...fects and proper wiring Use only batteries wired for a nominal voltage of 12 or 24 volts Disconnect PV from unit before disconnecting bat tery 103 The temperature of the heatsink inside of the MPT 30...

Страница 46: ...ing 20 o C 4 o F 40 o C 104 o F Voltmeter Accuracy Voltmeter Resolution 0 2 at full scale 60V 0 1V Ammeter Accuracy Ammeter Resolution 2 0 at full scale 30A 0 1A Wire Size for BAT and PV Terminals 4ga...

Страница 47: ...ity of wiring and connections Sunlight may be insuffi cient due to time of day or weather conditions Wait un til conditions improve Sunlight may be insuffi cient due to time of day or weather conditio...

Страница 48: ...sorb mode with float mode disabled This is normal Re enable float to allow entry into full float modes Loading will delay full charge and in some cases may prevent it altogether If this is a regular o...

Страница 49: ...ing equalize Set time for appropriate duration Loads should be turned off or disconnected before initi ating equalize Output boost to batteries is less than expected PV array Vmp is close to or below...

Страница 50: ...50 NOTES 50...

Страница 51: ...51 NOTES...

Страница 52: ...52 NOTES...

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