3
Connect all battery minus (-) connections, then connect all battery plus
(+) connections. Because of high charging currents, two battery cables
are required for 12V installs.
NOTE: The fan supplied with the system operates on 12VDC or
24VDC. It is thermostatically controlled to turn on if temperature ex-
ceeds 45C. It can be connected directly to the batteries or to the load
output of the controller.
STEP 8: Attach the DIN Rail adapters to the
charge controller using the screws provided
and attach the controller to the DIN rail.
STEP 9: Connect the battery wires to the
MPPT controller BAT inputs. Be sure to pay
strict attention to polarity.
Connect the battery charger to the Solar Con-
troller PV input (PV+ & PV-). Make sure to ob-
serve proper polarity. Brown wire is V+. The
controller has a pluggable 3 wire AC cord. You
can cut this cord to hardwire into the mains. You can also mount con-
duit to the enclosure if local codes require it.
CAUTION: Wiring with reverse polarity will cause equipment dam-
age. Don’t turn on the battery charger until MPPT controller has
been energized with battery power.
Important Note: The MPPT Controller ships with AUTO detec-
tion of battery voltage enabled. We suggest changing this to a
fixed 12V or 24V so that the system can recover automatically if,
by chance, the batteries get drained completely.
Also when charging in a 12V battery configuration the Battery
charge current in the MPPT controller should be set lower than the
Battery Charger capacity. For 500W charger set battery charge
current to 40A or lower. For 600W charger set battery charge cur-
rent to 50A or lower. For 24V battery configurations the default
60A value is acceptable.
See MPPT controller user manual for specific instructions.
Double check wiring and then install the fuse in the battery cables to
energize the system. When a fully charged battery is connected, the
controller should power up and display the system parameters.
STEP 10: Mount any customer electronics to the inside of the enclo-
sure. Connect any loads to the Solar Controller LOAD output. (LOAD+
& LOAD-). Press red SET button to turn on/off the LOAD output.
STEP 11: Tighten all wire feedthrus. If they don’t tighten on a small
diameter wire, you can wrap some electrical tape around the wire in the