If the controller is not operating properly or the battery indicator on the
controller shows an abnormality, please refer to "7.2 Troubleshooting".
Step 5: Grounding
This product is a common-positive controller, if any of one positive is grounded, all the
positive terminals of PV and battery will be grounded simultaneously. However, according to
the practical application, all the positive terminals of PV array and battery can also be
ungrounded, but the grounding terminal on its case 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 case.
Step 6: Connecting the solar module
(1)Safely cover the module (ensure that wind cannot blow off the covering).
(2)Connect the module cable with the (open) DC load circuit breaker to the solar module
connection of the controller and the solar module.
(3)Remove the covering from the solar module.
Step 7: Connecting accessories
(1)Connect the remote temperature sensor cable
Connect the remote temperature sensor cable to the interface and place the other end
close to the battery.
(2)Connect the accessories for RS485 or IoT communication, refer to the accessories list.
Step 8: Supplying the controller with voltage
(1)Please make sure the battery and the solar module have been connected as described
previously.
(2)Fit the terminal cover.
(3)Fit the fastening screws.
(4)Switch on the external battery fuse: Insert the fuse insert into the fuse holder (safety fuse)
or switch on the DC line circuit breaker. The controller automatically starts operating and then
displays the system states.
(5)Switch on the DC load circuit breaker of the solar module, if the PV is charging, the green
charge indicator will flash.
⑪
Step 4: Connecting the battery voltage sensor
The external battery voltage sensor cable allows the controller to directly measure the voltage at
the battery. This voltage value can be used for compensation of voltage drops across the battery
cables. This means that the voltage measurement is not affected by powerdependent voltage
drops across the battery cables.
A 2-pin plug with screw terminals for connecting the sensor cable is supplied with the device.
A cable with a cross-section of 0.14-1.5 mm² (AWG 28-16) can be used.
The battery voltage sensor cable is not supplied with the device.
1. The connection polarity is irrelevant.
2. Install a fuse(＜ 1A) in the connection between the battery voltage sensor cable
and the battery. This protects the cable from burning in the case of a short-circuit in
the battery voltage sensor cable.
12
The positive pole of the controller and the shell cannot be grounded at the
same time
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