MPPT M32-10, User Manual

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9
Step 2
：
Connect the system in the order of
❶
battery

❷
load

❸
PV array in
accordance with Figure 2-2
,” Schematic
Wiring Diagram
” and disconnect the system
in the reverse order
❸❷❶
.
CAUTION: While wiring the controller do not close the circuit breaker or fuse
and make sure that the leads of "+" and "-" poles are connected correctly.
CAUTION: A fuse which current is 1.25 to 2 times the rated current of the
controller, must be installed on the battery side with a distance from the
battery not greater than 150 mm.
CAUTION: If the controller is to be used in an area with frequent lightning
strikes or unattended area, it must install an external surge arrester.
CAUTION: If an inverter is to be connected to the system, connect the
inverter directly to the battery, not to the load side of the controller.
Step 3
：
Grounding
MN series is a common-negative controller, where all the negative terminals of PV
array, battery and load can be grounded simultaneously or any one of them will be
grounded. However, according to the practical application, all the negative terminals
of PV array, battery and load can also be ungrounded, but the grounding terminal on
its shell must be grounded, which may effectively shield the electromagnetic
interference from the outside, and prevent some electric shock to human body due to
the electrification of the shell.
CAUTION: For common-negative system, such as motorhome, it is
recommended to use a common-negative controller; but if in the
common-negative system, some common-positive equipment are used,
and the positive electrode is grounded, the controller may be damaged.
Step 4
：
Connect accessories

Connect the remote temperature sensor cable
（
supply with controller
）
Connect the remote temperature sensor cable to the interface
①
and place the other
end close to the battery.
CAUTION: If the remote temperature sensor is not connected to the
controller, the default setting for battery charging or discharging
temperature is 25 °C without temperature compensation.
Figure 2-2 Schematic of wiring diagram
Temperature Sensor
Remote Temperature Sensor
Cable(Optional)