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ManualsBrandsACOPOWER ManualsEnergy ControllersMidas 40A MPPT Negative Ground Solar Panel Charge Controller LCD Display
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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
Midas Y 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 electro-
magnetic 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
Temperature Sensor
Remote Temperature Sensor
Cable (Optional)
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.
Connect the accessories for RS485 communication
Refer to chaper4 “Control Parameters Setting”.
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 5.2
“Troubleshooting”
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