Before connect DC wiring, following the steps below to prevent hazardous electric shock
resulting in serious injury or device burning.
• Make sure that the external DC disconnect switch is off.
•Make sure that AC power is disconnected (If AC power supply is wired as backup
power,AC and DC power supply can not simultaneously put into the controller, otherwise it
will damage the controller.)
3.2.3 Junction box connection
If there are a large number of solar modules, it is needed to use a junction box to
converge the bus to the solar array.Thejunction box need to install fuses, lightning
protection device and DC switch.The fuse and the DC switch can prevent the short
circuit protection; the lightning protection device can play the direct current side the
lightning protection function. The junction box must be sealed, and water can not
enter.
3.2.4 Ground Wiring
Ground terminal (GND) is labeled as this icon . Please connect it to the ground
Correct grounding helps to prevent shock hazard if there is a fault in the motor.
3.2.5 Motor Wiring
Connect the cable with four wires from the Motor to the controller terminal block to
terminals U, V, W, and GND (See Figure 9). Check motor lead color to ensure
correct installation.。
Note: To reverse direction of motor rotation, reverse any two wires
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