1. Prepare for mounting. Use the template provided in the cardboard box or in the Appendix at the end of this document to mark the four mounting holes and the cutting line for flush mounting your controller.

 

2. Complete the installation of the solar modules. If this GP-SB-PWM was purchased as part of a Go Power! Solar Power Kit, follow the Installation Guide provided. Otherwise, follow manufacturer’s instructions for solar module mounting and wiring.

 

3. Select wire type and gauge. If this GP-SB-PWM was purchased as part of a Go Power! Solar Power Kit, appropriate wire type, gauge, and length is provided. Please continue to Section 7, “Operating Instructions.” If the GP-SB-PWM was purchased separately, follow the instructions included here.

 

Wire type is recommended to be a stranded copper UV-resistant wire. Wire fatigue and the likelihood of a loose connection are greatly reduced in stranded wire compared to solid wire. Wire gauge should be able to sustain rated current and minimize voltage drop. We recommend #8 for a 10A controller, and either #10 or #8 for a 30A controller.

 

Wire Strip Length

 

Strip wires to a length of approximately 3/8in or 10mm, as per strip gauge.

 

 

2. Connect the battery wiring to the controller first and then connect the battery wiring to the battery. Install a fuse or breaker no more than 18 inches from the battery connection.

3. Torque all terminal screws per the following:

 

 

With battery power attached, the controller should power up and display information. Connect the solar wiring to the controller and remove the opaque material from the solar panel(s). The negative solar connection and battery wiring must be connected directly to the controller for proper operation.

 

Mounting the GP-SB-PWM. Mount the GP-SB-PWM to the wall using the included four mounting screws.

 

 

Your GP-SB-PWM should now be operational. If the battery power is low and solar panel(s) are producing power, your battery should begin to charge.

 

4. Re-torque: After 30 days of operation, re-torque all terminal screws to ensure the wires are properly secured to the controller. Re-torque controller connections every six (6) months of use to maintain optimal performance.

 

 

3.1 WIRING DIAGRAM

 

The GP-SB-PWM Maximum 37.5A rating is based on a 30-amp total maximum short circuit current rating (Isc) from the parallel solar panels nameplate ratings. The National Electric Code specifies the PV equipment/system rating to be 125% of the maximum(Isc) from the solar panels nameplate ratings (1.25 times 30 = 37.5A).

 

Use the wiring diagram (below) to connect your battery to the battery terminals on the solar controller. First, connect the battery to the controller, and then connect the solar panel connection to the controller.

 

 

 

 

 

 

3.2 BATTERY SET-UP

3.2.1 LEAD ACID BATTERY

 

 

3.2.2 LITHIUM BATTERY

 

 

3.3 LITHIUM WAKE-UP

 

When the GP-SB-PWM is powered by a solar panel but a battery is not detected, it sends 5 pulses to restore a Lithium battery that has been protected from over discharge by its BMS. The LCD indicates this process by showing the displays below.

 

 

If a battery is still not detected after the fifth trial, the controller shows error number 32 to indicate this failure. The controller gives up until it is either manually reset by disconnecting and reconnecting solar power. The solar controller will not engage in this process if a new day is detected through the solar panel(s). Pressing the back button will also stop the process.