5
WARNING:
Risk of electric shock! Exercise caution when handling solar wiring. The solar
module(s) high voltage output can cause severe shock or injury. Be careful operation when
installing solar wiring.
Step 3
：
Grounding
VS BN 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
：
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 5
.2 “Troubleshooting”.