Wiring Instructions; Wiring Sequence - Projecta SC420/ND Manual

4. Wiring Instructions

1 & 2: Remove the magnetic cover, and put it aside
4. Insert the bare wire side of the cable to the
terminal, and tighten the screws.

5. Wiring Sequence

1. Connect the positive battery wire followed by the negative battery wire.
2. Connect the positive solar array input wire followed by the negative solar array input wire
(make sure your solar panels are fully covered to prevent electrical shock)
3. Connect the external temperature sensor (optional) to its terminal shown above, and place the sensor
on the side of a battery.
4. Connect the external remote LCD through RS485 communication port (if applicable)
The controller is not designed to run without a battery voltage reference. In the event of replacing/servicing the
battery, always disconnect the solar input or fully cover the panels, then remove/replace the battery.
3. Unscrew the terminals completely,
before inserting any wiring leads.
5. Check the wiring condition and put the
magnetic cover back.
Remote LCD Meter
Grounded