User manual

Connection and display elements
1. Push button for load output/for deactivating the
standby mode
2. Socket for remote display
3. External temperature sensor
4. Battery status display, green
5. Battery status display, yellow
6. Battery status display, red
7. Display for solar input
8. Display for load output
9. Display for incorrectly connected battery
10. Connector for solar input (+/-)
11. Display for load output (-/+)
12. Connector for rechargeable battery input/output
(+/-)
LED displays
The MPPT solar charge controller is equipped with several LEDs to ease the operation and control of the device. The following
two tables describe the function of each LED.
Battery status LED Decreasing voltage Increasing voltage
Green LED 4 is on
Up to 11.4V From 13.5V
Yellow LED 5 is on 11.3V-10.4V 10.5V-13.4V
Red LED 6 is on
From 10.3V Up to 10.4V
Connection of displays Function
Green LED 7 is on Solar voltage is applied (also with low value).
Green LED 8 is on With connected load output
Red LED 9 is on With incorrectly connected battery
Features:
• With maximum power point tracker (MPPT)
• Automatic recognition of system voltage (12V/24V)
• Input voltage range from 5V-60V
• Temperature-dependent correction of charging parameters
• Step-up function
• Deep discharge protection
• Overcharge protection
• Desulfation function (pulse charging)
• Temperature-activated protective circuit
• Reverse polarity protection
• Switchable load output
• Connection possibility of an optional remote display with SD card mount
Description of functions
The MPPT solar charge controllers are modern, microprocessor-controlled devices which were developed for charging lead-acid
batteries in solar stand-alone systems. The MPPT (maximum power point tracker) enables you to make optimum usage of the
solar power of your solar modules. The most efficient operating point of the solar modules changes due to factors such as
exposure rate, temperature and the type of solar cells. This optimum operating point (MPP- maximum power point) is monitored
constantly by the internal microprocessor of the solar controller and is controlled by the MPPT in such a way that your battery is
always charged with maximum power.
When the maximum charge voltage of your battery has been reached, the MPPT solar controller switches the charging current
off.
The microprocessor is also responsible for controlling all important protective functions.
A load output to be switched by push-button enables you to switch on and off all consumers connected to the MPPT solar
charge controller by the push of a button.
Adapting the module power to the solar controller
Strictly ensure that the module power match the used solar controller!
If you have a module voltage which is significantly higher than the battery voltage, the charging current of the battery will be
higher than the given maximum current of the module. For example: A module with 36V and 5A charges a 12V battery with max.
15A. This module requires a MPPT 20.
Attention: If you use a solar controller whose charging power is too low, the solar controller may be damaged in the
long run!
Maximum module power
MPPT 10 MPPT 20 MPPT 30
12V battery system voltage 120 watts 240 watts 360 watts
24V battery system voltage 240 watts 480 watts 720 watts