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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 unatten-
ded 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
BSS 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 electrifi cation 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
Connect the remote temperature sensor cable to the interface ④and 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 com-
pensation.
Connect the accessories for RS485 communication
Refer to chaper3.3 "Setting
CAUTION: RS485 communication port's internal circuit has no isolation design, so a commu-
nication isolator is recommended to connect to the interface before communicating.
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Step 5: Powered on the controller
Closing the battery fuse will switch on the controller. Then check the status of the battery
indicator (the controller is operating normally when the indicator is lit in green). Close the
fuse and circuit breaker of the load and PV array. Then the system will be operating in the
preprogrammed mode.
CAUTION: If the controller is not operating properly or the battery indicator on the controller
shows an abnormality, please refer to 4.2 "Troubleshooting".
Operation
BUTTON
Mode
In load manual mode, it can turn the load On/Off via the
Load ON/OFF
Clear Fault
Browsing Mode
Press the "ENTER" button. and hold on 5s to enter the
setting mode Press the "SELECT" button. to set the para-
Setting Mode
Press the "ENTER" button. to confi rm the setting parame-
ters or no operation for 10s, it will exit the setting interface
Note
"ENTER" button.
Press the "ENTER" button.
Press the "SELECT" button.
meters,
automatically.
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