Thank you for using VictronConnect. This guide will help you get the most out of your MPPT Solar Charge Controller. The information available here applies to all BlueSolar and SmartSolar MPPT Charge Controllers which are compatible with VictronConnect. A list of all VictronConnect compatible devices can be viewed here.
More general information about the VictonConnect App - how to install it; how to pair it with your device; and how to update firmware, for example - can be found by referring to the VictronConnect manual.
Note: Where battery voltage is referred to in these instructions, a 12V battery is assumed. Please multiply the given values by 2, 3 or 4 to arrive at settings for an installation configured for 24V, 36V or 48V respectively.
Note that for the load output reading to be reliable, all loads must be wired directly to the load output …including their negative terminals. See manual or consult your installer for details.
Note that some loads (especially inverters) are best connected directly to the battery. In such cases the load output does not show a reliable reading - the current drawn by the inverter, for example, will not be included. Consider adding a BMV battery monitor which will measure all current going to - or being drawn from the battery, including loads connected directly to the battery …not just the load output terminals of the charge controller.
The battery will be charged whenever the power available from the PV panels exceeds the power being drawn by the loads (lights, fridge, inverter, etc.).
You can only tell if that is the case with Charge Controllers which have all loads connected to the load output terminals. Remember: any loads connected directly to the battery can't be monitored by the Solar Charger.
Total yield: This shows how much energy has been converted by the panels since the last reset. A reset button is available at the bottom of the history page.
System yield: This shows the total energy converted by the installation and is not re-settable.
The MPPT Solar Chargers feature a 30 day history log which records several parameters every day:
Note: You may need to slide the row of values to the left on your device to see the charge times.)
Tip!: You can use the charge times to see if the PV array is properly sized for your requirements. A system which never reaches 'Float' may need more panels; or perhaps the load could be reduced?
The settings page is accessed by clicking on the Cog icon at the top right of the Home page. The settings page provides access to view or change the settings of the Battery; Load; Streetlight; and Port functions. From this page you can also view Product information such as the Firmware versions installed on the MPPT Solar Charger.
For small MPPT Solar Charger models there is only one preset. Larger models feature a rotary switch, the battery page shows the setting of the rotary switch.
We recommend using the rotary switch to select one of the pre-programmed charge algorithms.
Set the battery voltage to a fixed voltage (12, 24, 36, 48).
The battery voltage is automatically selected at the very first power-up of the charger. The detected figure is stored, and further automatic detection is disabled. If, however, the battery voltage is absent (or below 7 volts) the unit operates as a 12V model and automatic detection is rescheduled for the next power-up.
Note that 36 and 48 volt operation is only available on models which support these voltages - such as the MPPT 150/35. Note also that 36 volts cannot be detected automatically. Systems operating at this voltage must always be set manually.
Allows the user to set a lower maximum charge current.
When enabled, the Absorption voltage, Absorption time, Float voltage, Equalisation voltage and Temperature compensation settings are all configured to a preset value. The preset voltages will be shown further down the screen in light grey.
When disabled, custom parameters can be set as follows:
Set the absorption voltage.
Set the absorption time limit. Only available when using a custom charge profile.
Enter the time value in the notation hh:mm, where hours are between 0 and 12; and minutes are between 0 and 59.
The maximum duration of the absorption period is determined by the battery voltage as measured just before the solar charger begins operation each morning (12V battery assumed):
|Battery voltage Vb (@start-up)||Multiplier||Maximum absorption times|
|Vb < 11.9V||x 1||06:00 hours|
|> 11.9V Vb < 12.2V||x 2/3||04:00 hours|
|> 12.2V Vb < 12.6V||x 1/3||02:00 hours|
|Vb > 12.6V||x 1/6||01:00 hours|
The maximum absorption times shown in the last column are based on the default absorption time limit of 6 hours.
Set the float voltage.
Set the equalization voltage.
Use this setting to temporarily disable the charger.
Set-up the frequency of the auto equalize function. Available options are between 1 and 250 days:
Equalization is typically used to balance the cells in a lead battery, and also to prevent stratification of the electrolyte in flooded batteries. Whether (automatic) equalization is necessary, or not, depends on the type of batteries, and their usage. Consult your battery supplier for guidelines.
When the Automatic equalization cycle has initiated, the charger applies an equalization voltage to the battery as long as the current level stays below 8% (Gel or AGM) or 25% (tubular plate) of the bulk current.
Duration of the Automatic equalization cycle
In the case of all VRLA batteries and some flooded batteries (algorithm number 0, 1, 2 and 3) automatic equalization ends when the voltage limit (maxV) has been reached, or after a period equal to (absorption time/8) - whichever comes first.
For all tubular plate batteries (algorithm numbers 4, 5 & 6); and also for the user-defined battery type, automatic equalization will end after a period equal to (absorption time/2).
For the Lithium battery type (algorithm number 7), equalization is not available.
When an automatic equalization cycle is not completed in one day, it will not resume the next day. The next equalization session will take place according to the interval set in the 'Auto Equalization' option.
For units without a rotary switch (75/10; 75/15; 100/15 & 100/20) the default battery type is a VRLA battery and any user-defined battery will behave as a tubular plate battery with regard to equalization.
Selecting 'Start Equalization now' allows manual initiation of an Equalization cycle. To allow the charger to equalize the battery properly use the manual equalize option only during absorption and float periods, and when there is sufficient sunlight. Current and voltage limits are identical to the automatic equalize function. The duration of the equalisation cycle is limited to a maximum of 1 hour when triggered manually. Manual equalization can be stopped at any time by selecting 'Stop Equalize'. Note that manual equalization is not available on all models.
Many types of battery require a lower charge voltage in warm operating conditions, and a higher charge voltage in cold operating conditions.
The configured coefficient is in mV per degree Celsius for the whole battery bank, not per cell.
Note that the temperature compensation is not dynamic during operation. The charger uses its internal temperature for battery temperature compensation when the charger has been idle for at least one hour, i.e. when the charger is not actively charging a battery or supplying a load.
This section applies to all products. These settings are typically used on the smaller models which have a dedicated load output (75/10, 75/15, 100/15 and 100/20).
For larger models without a load output, the load settings can be used to drive the TX pin in the VE.Direct port, which can then be used to drive a BatteryProtect relay or other load-shedding device. See chapter 4.4 Tx port function, option 5: Virtual Load output, for more information.
The available programs are:
Note that, by default, the models with a load output have their algorithm selected with a jumper in the VE.Direct port.See VE.Direct Rx pin configuration (4.5 below) for information on how to disable that.
Keep in mind that modes 1 (always off) and 5 (always on) will respond immediately. The other modes, sensing the battery voltage, have a delay of 2 minutes before the load output changes. This is so that the charger does not respond too quickly when, for example, an inrush current briefly lowers the battery voltage below the threshold.
Larger models offer a 'Streetlighting Algorithm' (see 4.3 below); this too will be 'controlled' by the Load Output settings in order to protect the battery from being too deeply drained: Streetlight settings will be overridden if the battery voltage falls below a chosen value. When the battery voltage is restored to chosen parameters, the Streetlighting function will resume. In this way the two functions work together.
The load output (on the smaller MPPT models) always acts as a switch - off when load output is off or streetlight dimming is at 0%; and on when load output is on and streetlight dimming is between 1 and 100% (see 4.3 below: Gradual Dimming speed).
Use the optional VE.Direct TX digital output cable, ASS030550500, accessory.
The Streetlight function allows you to automatically control night lighting - it's duration, and brilliance. When the Streetlight function is enabled a timer program can be created whereby 'sunset' and 'sunrise' are used as the anchor points for the timer program. The advantage of this is that the programme will adjust itself to the duration of night-time as it changes with the season. Note that the internal clock will need a few days of uninterrupted operation to synchronize with sunrise and sunset and whilst this is happening a 12-hour day, and a 12-hour night will be assumed.
At sunset you can choose from the following actions:
At sunrise you can choose to:
For example, completing the 'If' 'Then' menu (as seen in the image at this chapter's head) in the manner below will switch on the light at sunset for 60 minutes at 100% brightness, and after 1 hour dim the light to 50% brightness …until sunrise.
|At Sunset.||Switch on for a fixed time.|
|Dim level at sunset.||100%|
|Keep lights on during.||60m|
|Dim level at end.||50%|
|At Sunrise.||Switch off|
NB: This dim-levels menu only appears when the TX port function is set to PWM (see 4.4 below).
After making your settings the charger will use 'local time' for 5 days whilst synchronising with solar activity. During this period the charger should remain powered-up. If not, it will work on the assumption that midnight occurs 6 hours after sunset and will continue with this assumption until local synchronisation has taken-place.
The lighting controller (timer) program is written to non-volatile memory, so the program will remain intact when the charger is disconnected from the battery.
When entering a 'switch-on' instruction a dim level can also be entered, this results in a signal being sent to the TX port when the VE.Direct port is set to this mode (refer to Chapter 4.4 below).
The time of midnight is estimated based on solar activity, and depends on your geographical location. Remember, too, that daylight saving times cause a further deviation between 'solar' and 'clock' midnight. By using the Mid-point shift function this can be compensated for. (Note that this setting is only relevant when your timer program uses 'Midnight' as a switching moment …as in option 3 above). Use 0 to disable the shift (default).
For calculation we use a 1440-minute day.
Where Sunset is at 19:00 (1140 minutes); and Sunrise is at 6:25 (385 minutes)
Night/day detection voltage settings can be used to adjust the detection to match the panel configuration. The day detection voltage must be 0.5V higher than the night detection level. The lowest detectable voltage is 11.4V. Set this option to 0 to use the built-in defaults which are: Night = Vpanel<11.4V Day = Vpanel>11.9V).
The default setting is 0 (use built-in default voltages)
Using the 'Delay' periods for day/night changeover avoids the system making an accidental switch when clouds pass over the panels. The valid range is between 0…60 minutes. These delays are disabled by default (0).
The gradual dimming option can be used to slow down the response of the timer program. This is useful when multiple chargers are used in a row, and helps to mask the fact that each timer uses its own detection and the transition moment which will vary from unit to unit.
The dimming settings can be adjusted. You can input the number of seconds required to achieve each percentage-point of change (x seconds/per 1% of dimming). The available setting parameters are 0 …99
* 0 = immediate response (gradual dimming disabled)
* 9 = dim from 0 to 100% in 15 minutes.
Note: Make sure the TX port function is set to Light dimming mode (as described in the next chapter) and connect a VE.Direct TX digital output cable to the PWM dim input of your LED driver.
This setting defines the function of the Tx pin located inside the VE.Direct connector. Use the VE.Direct TX digital output cable, ASS030550500 to access - and therefore receive signals from - the pin.
The Rx pin on the VE.Direct connector can be used for other functions. This functionality was introduced in firmware version 1.17 and applies to the 10A, 15A and 20A chargers with a load output. Available options:
Note: These settings work in a similar way to a remote on/off switch, but instead they control the load output.
A programmable relay switch is available on some SmartSolar models. The datasheet for your model will tell you whether or not it is available.
The relay offers three connections:
When the relay is in the OPEN position a connection is made between C and NC. When the relay is in the CLOSED position a connection is made between C and NO.
This option sets the relay in the CLOSED position when the panel voltage rises above the chosen “Panel high voltage” setting, and sets the relay in the OPEN position when the panel voltage falls below the chosen “Clear panel high voltage” setting. Ensure, of course, that the “Panel high voltage” setting is greater than the “Clear panel high voltage” setting. These settings must never exceed the maximum voltage-rating allowed by your MPPT charger.
These settings, which can be user-defined, will cause the relay to switch to the CLOSED position when the battery voltage falls below the chosen “Battery low-voltage” setting; and will cause the relay to switch to the OPEN position when the battery voltage once again rises above the “Clear battery low-voltage” setting. Ensure, of course, that the “Battery low-voltage relay” setting is lower than the “Clear battery low-voltage relay” setting.
An application for this feature, for example, is to automatically disconnect a load in order to prevent a battery from becoming too deeply discharged.
These settings, which can be user-defined, will cause the relay to switch to the CLOSED position when the battery voltage rises above the “Battery high-voltage relay” setting; and will cause the relay to switch to the OPEN position when the battery voltage drops below the “Clear battery high-voltage relay” setting. Ensure, of course, that the “Battery high-voltage relay” setting is greater than the “Clear battery high-voltage relay” setting.
An application for this feature, for example, is to disconnect a load in order to protect it from an over-voltage.
This option sets a minimum-time for the CLOSED condition to prevail once the relay has been triggered.
An application for this feature, for example, is to set a minimum generator run-time.