Midas Y Series MPPT Solar Charge Controller User Manual Models:MY20/MY30/MY40 Add: 4120 Valley Blvd, Walnut, CA 91789,USA Tel: 1.626.575.7722 Email:sales@acopower.com Web:www.acopower.
Important Safety Instructions Please keep this manual for future review. This manual contains all instructions of safety, installation and operation for Midas Y series Maximum Power Point Tracking (MPPT) controller ("the controller" as referred to in this manual). General Safety Information Read carefully all the instructions and warnings in the manual before installation. No user serviceable components inside the controller. DO NOT disassemble or attempt to repair the controller.
CONTENTS 1. General Information 1.1 Overview 1.2 Characteristics 1.3 Product Classification 2. Installation Instructions 2.1 General Installation Notes 2.2 PV Array Requirements 2.3 Wire Size 2.4 Mounting 01 3. Adanced Display unit 4. Control Parameters Setting 4.1 Battery types 4.1.1 Support battery types 4.1.2 Battery Voltage Control Parameters 4.1.3 Settings 4.2 Load working modes 4.2.1 LCD setting 4.2.2 R485 communication setting 4.3 Accessories (optional) 5.
1. General Information 1.1 Overview Midas Y series controller adopt the advanced MPPT control algorithm, it can minimize the maximum power point loss rate and loss time, quickly track the maximum power point(MPP) of the PV array and obtain the maximum energy from solar array under any conditions; and it can increase the ratio of energy utilization in the solar system by 20%-30% compared with PWM charging method.
Isolated RS485 with 5V/200mA protected output for no power devices, with Modbus protocol Support monitoring and setting the parameters via APP or PC software IP33▲ Ingress protection 1.
1.3 Product Classification Model Picture Display LED Indicators: PV & battery & load working status MY20 MY30 MY40 Buttons: View or set the parameters or clear the error information. LCD: PV display: voltage/current /generated energy/power Battery display: voltage/current/temperature/capacity Load display: voltage/current/power/consumed energy/load working mode. 2. Installation Instructions 2.
Select the system cables according to 5A/mm2 or less current density in accordance with Article 690 of the National Electrical Code, NFPA 70. 2.2 PV Array Requirements (1) Serial connection (string) of PV modules As the core component of solar system, controller could be suitable for various types of PV modules and maximize converting solar energy into electrical energy.
Condition 1: Actual charging power of PV array ≤ Rated charging power of controller Condition 2: Actual charging current of PV array ≤ Rated charging current of controller When the controller operates under “Condition 1”or“Condition 2”, it will carry out the charging as per the actual current or power; at this time, the controller can work at the maximum power point of PV array.
Model Rated Charge Current MY20 20A MY30 30A MY40 40A Rated Charge Power Max. PV Array Power 260W/12V 390W/12V 520W/24V 780W/24V Max. PV open circuit voltage 390W/12V 580W/12V 92V ① 780W/24V 1170W/24V 100V ② 520W/12V 780W/12V 1040W/24V 1560W/24V ① At 25℃ environment temperature ② At minimum operating environment temperature 2.3 Wire Size The wiring and installation methods must conform to all national and local electrical code requirements.
Battery and Load Wire Size The battery and load wire size must conform to the rated current, the reference size as below: Rated Charge Rated discharge Current current MY20 20A 20A 6mm2 /10AWG 6mm2 /10AWG MY30 30A 30A 10mm2 /8AWG 10mm2 /8AWG MY40 40A 40A 16mm2 /6AWG 16mm2 /6AWG Model Battery wire size Load wire size CAUTION: The wire size is only for reference.
Installation Procedure: 150mm 150mm 150mm 150mm Mounting Instruction Figure 2-1 Mounting 08
Step 1: Determination of Installation Location and Heat-dissipation Space Determination of installation location: The controller shall be installed in a place with sufficient air flow through the radiators of the controller and a minimum clearance of 150 mm from the upper and lower edges of the controller to ensure natural thermal convection. Please see Figure 2-1: Mounting CAUTION: If the controller is to be installed in an enclosed box, it is important to ensure reliable heat dissipation through the box.
CAUTION: If an inverter is to be connected to the system, connect the inverter directly to the battery, not to the load side of the controller. Step 3：Grounding Midas Y series is a common-negative controller, where all the negative terminals of PV array, battery and load can be grounded simultaneously or any one of them will be grounded.
3.
Indicator Color Status Instruction Red On Solid Red Slowly Flashing(1Hz) Over discharged Battery Overheating Lithium battery Low temperature① Yellow On Solid Load ON Yellow OFF Load OFF Controller Overheating PV&BATTLED fast flashing System voltage error② ① When a lead-acid battery is used, the controller doesn’t have the low temperature protection.
Controller load browsing interface Press the button Setting data LOAD Press the button and Setting the load working mode hold 5s Enter into setting interface Setting interface switch to the Press the button browsing interface SET Setting parameter as enter button Press the button Exit the setting interface ESC (3) Display Icon Information Icon Day Icon Information Information Icon Not charging Icon Information Charging Night 13 Information Not discharging Icon Information Disch
1) PV parameters Display：Voltage/Current/Temperature/Battery capacity level 2) Battery parameters Display：Voltage/Current/Temperature/Battery capacity level 3)Load parameters Display：Voltage/Current/Power/ Consumed energy/Load working mode-Timer1/ Load working mode-Timer2 (4)Setting parameters 1)Battery type Sealed (Default) Gel Flooded 14 User
Operation: Step 1: Press the SET Step 2: Press the BATT Step 3: Press the PV Step 4: Press the SET button for the setting interface. button and hold 5s for the battery type interface. or LOAD button to choose the battery type. button to confirm the battery type. CAUTION：Please refer to chapter 4.1 for the battery control voltage setting, when the battery type is User.
4) LCD cycle time NOTE: The LCD cycle default time is 2s,the setting time range is 0～20s. Operation: Step 1: Press the Step 2: Press the Step 3: Press the Step 4: Press the SET PV PV SET button for the setting interface. button and hold 5s for the LCD cycle time interface. or LOAD button to set the LCD cycle time. button to confirm the parameters.
Sealed(default) 1 Gel Lead-acid battery Flooded User LiFePO4(4S/12V;8S/24V) 2 Li(NiCoMn)O2 (3S/12V;6S/24V) Lithium battery User CAUTION: When the default battery type is selected, the battery voltage control parameters will be set by default and can’t be changed. To change these parameters, select "User" battery type. 4.1.2 Battery Voltage Control Parameters Lead-acid battery parameters The parameters are in 12V system at 25 ºC, please double the values in 24V system.
The following rules must be observed when modifying the parameter values in User for lead-acid battery. Ⅰ. Over Voltage Disconnect Voltage > Charging Limit Voltage ≥ Equalize Charging Voltage ≥ Boost Charging Voltage ≥ Float Charging Voltage > Boost Reconnect Charging Voltage. Ⅱ. Over Voltage Disconnect Voltage > Over Voltage Reconnect Voltage Ⅲ. Low Voltage Reconnect Voltage > Low Voltage Disconnect Voltage ≥ Discharging Limit Voltage. Ⅳ.
Ⅰ. Over Voltage Disconnect Voltage>Over charging protection voltage(Protection Circuit Modules(BMS))+0.2V※; Ⅱ. Over Voltage Disconnect Voltage>Over Voltage Reconnect Voltage＝Charging Limit Voltage ≥ Equalize Charging Voltage＝Boost Charging Voltage ≥ Float Charging Voltage>Boost Reconnect Charging Voltage; Ⅲ. Low Voltage Reconnect Voltage>Low Voltage Disconnect Voltage ≥ Discharging Limit Voltage; Ⅳ. Under Voltage Warning Reconnect Voltage>Under Voltage Warning Voltage≥ Discharging Limit Voltage; Ⅴ.
Download software(User for lead-acid battery) http://www.acopower.com Download software(User for lithium battery) http://www.acopower.com 4.2 Load working modes 4.2.1 LCD setting 1) LCD display and operation When the LCD shows above interface, operate as following: Step1: Press the Step2: Press the Step3: Press the Step4: Press the SET LOAD PV button for the setting interface. button and hold 5s for the load working mode interface. or LOAD button to set the load working modes.
116 Test mode 2n Disabled 101 Manual mode(Default load ON) 2n Disabled CAUTION: Please set Light ON/OFF, Test mode and Manual mode via Timer1. Timer2 will be disabled and display "2 n ". 4.2.2 R485 communication setting 1) Load working mode Manual Control (default) Control ON/OFF of the load via the button or remote commands (e.g., APP or PC software). Light ON/OFF Light ON+ Timer Time Control Control the load ON/OFF time through setting the real-time clock.
2) Load working mode settings (1) PC setting Connection Download software http://www.acopower.com (2) APP software setting WIFI-Box Download software http://www.acopower.com (3) MT50 Setting CAUTION: For detailed setting methods, please refer to the instructions or contact after-sales support.
4.3 Accessories (optional) Acquisition of battery temperature for undertaking temperature compensation of control parameters, the standard length of the cable is 3m (length can be Remote Temperature Sensor customized). The Remote Temperature connects to the port (4th) on the controller. NOTE: The temperature sensor short-circuited or damaged, the controller will be charging or discharging at the default temperature 25 ºC.
After the controller is connected with the BLE-Box RS485 to Bluetooth Adapter through the standard Ethernet cable (parallel cable), the operating status and related parameters of the controller can be monitored by the mobile APP software through Bluetooth signals. After the controller is connected with the logger Logger through the RS485 communication cable, it can record the operating data of the controller or monitor the real-time operating status of the controller via PC software.
When the charging current or power of the PV array exceeds the controller’s rated current or power, it will be charge at the rated PV Over Current/power PV Short Circuit current or power. NOTE: When the PV modules are in series, ensure that the open-circuit voltage of the PV array does not exceed the "maximum PV open-circuit voltage" rating. Otherwise the controller may be damaged. When not in PV charging state, the controller will not be damaged in case of a short-circuiting in the PV array.
When the temperature detected by the optional temperature sensor is lower than the Low Temperature Protection Threshold(LTPT), the Lithium Battery Low Temperature controller will stop charging and discharging automatically. When the detected temperature is higher than the LTPT, the controller will be working automatically (The LTPT is 0 °C by default and can be set within the range of 10 ~ -40 °C).
5.2 Troubleshooting Possible reasons PV array disconnection Faults Confirm that PV wire daytime when sunshine falls on PV connections are correct modules properly. and tight. Battery voltage is Wire connection is correct, the lower than 8V controller is not working. Battery over voltage Troubleshooting Charging LED indicator off during Please check the voltage of battery. At least 8V voltage to activate the controller.
Possible reasons Faults System voltage error Troubleshooting PV/BATT indicator fast flashing ① Check whether the battery voltage match with the controller working voltage. ② Please change to a suitable battery or reset the working voltage. ①Please reduce the number Load Overload Load Short Circuit 1. The load is no output of electric equipments. ②Restart the controller. ③Wait for one night-day cycle (night time>3 hours). Load and fault icon blink ①Check carefully loads connection, clear the fault.
Clear up dirt, nesting insects and corrosion in time. Check and confirm that lightning arrester is in good condition. Replace a new one in time to avoid damaging of the controller and even other equipments. WARNING：Risk of electric shock! Make sure that all the power is turned off before above operations, and then follow the corresponding inspections and operations. 6.
Environmental Parameters Item MY20 Working environment temperature (100% input and output) ◆ MY30 MY40 -25℃～+50℃(LCD) -30℃～+50℃(No LCD) Storage temperature range -20℃～+70℃ ≤95%, N.C. Relative humidity Enclosure IP33 ★ Pollution degree PD2 ◆ The controller can full load working in the working environment temperature, When the internal temperature reach to 81℃, the reducing charging power mode is turned on. ★ 3-protection against solid objects: protected against solids objects over 2.5mm.
Annex I Conversion Efficiency Curves Illumination Intensity: 1000W/m2 Temp: 25ºC Model: MY20 1. Solar Module MPPT Voltage(17V, 34V) / Nominal System Voltage(12V) 2.
Model: MY30 1.Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V) 2.
Model: MY40 1.Solar Module MPP Voltage(17V, 34V) / Nominal System Voltage(12V) 2.
Annex II Mechanical Dimension Diagra 56.5 MY20(Unit: mm) 158 149 5 R2. 160 28.
63 MY30(Unit: mm) 165 156 5 R2. 173 28.
67.8 MY40(Unit: mm) 185 176 5 R2. 200 27.
Add: 4120 Valley Blvd, Walnut, CA 91789,USA Tel: 1.626.575.7722 Email:sales@acopower.com Web:www.acopower.
