Multiples of the GP-MPPT-PRO-60 can be wired in parallel to charge the same battery bank for increased charging current. When wired in parallel the controllers will coordinate to ensure they work together to provide as much power to the battery bank as possible.

 

Note. Only the battery output can be wired in parallel, the solar input of each controller must be individually wired to separate solar arrays.

 

Note. While configured for parallel operation, the built-in display, remote display and Bluetooth dongle only relay information for the individual solar controller that they are connected to. This means each controller will need a separate remote display or Bluetooth dongle. To get a complete picture of the total power going to the battery bank the charge current displayed for each controller must be added together.

 

WIRING DIAGRAM

 

1. CONTROLLER

The controller can be used separately or in parallel operation and, when used in parallel, it needs to connect to the RS485 communication cable.

 

2. SOLAR PANEL

The solar panel should be connected independently with the controller, and the power of each circuit should not exceed the rated power of the controller.

 

3. BATTERY BANK

A battery bank consist of several batteries possessing specific voltages and capacities.

 

4. RS232 COMMUNICATION INTERFACE The RS232 connects to the PC or BluetoothTM and can process information from the controller offering real-time monitoring and other functionality.

 

5. RS485 COMMUNICATION INTERFACE The controller must be connected to the cable in order to achieve a parallel operation.

 

 

ORDER OF CONNECTION

 

1. Connect the battery first, then the solar panel and finally the load. Follow the “+” and “-” pole connection mode.

2. Connect the MAIN controller first, then connect to the next AUXILLARY controller followed by the battery, solar panel and lastly, the controller according to the ID.

 

INTERFACE DEFINITION

 

 

PARAMETER SETTING

 

 

1. ADDRESS: the ID of the MAIN must be minimal, followed by the number from the machine to the large set.

 

 

For example, the MAIN ID is set to number 1, the AUXILLARY ID of the second controller is set to number 2 and the AUXILLARY ID of a third one would be set to 3.

 

 

Note. If the HOST fails, the minimum address ID from the controller will automatically change to the HOST and take over the rest from the controller, without causing the whole system to fail.

 

2. 485: parallel CHG (parallel mode)

 

 

Note. The 485 interface of ML4860 can be used to communicate with external communication, or it can be used for Parallel operation. If it is used in Parallel operation, the function of 485 must be adjusted to Parallel CHG mode.

 

3. The left image is the interface of the HOST controller when it is used. The right is the interface from the machine when it is used. Charging and discharging instructions are different.