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Chapter 3 Wiring of Drive
This chapter introduces the wiring and cable connection of drive, as well as the issues needing attention.
• Do not open the cover until the power supply of the drive is completely disconnected for at least 10
minutes.
• Make sure that the internal wiring be conducted only when the charge LED inside the drive is off and the
voltage between the main circuit terminals +DC and -DC is below 36V.
• Only the well-trained and authorized personals are allowed to perform the internal wiring of the drive.
• Check the wiring carefully when connecting the emergency stop or safety circuit.
• Check the voltage level of the drive before power-on, otherwise, human injury and death or equipment
damage may be caused.
• Check carefully whether the rated input voltage of the drive is consistent with the AC power voltage before
power-on.
• The drive has passed the dielectric strength test before delivery. Do not conduct this test again.
• When connecting the external braking resistor or braking unit, please refer to Chapter 1.
• Do not connect the AC supply cables to the output terminals U, V and W.
• The diameter of copper cable used as grounding wire should be bigger than 3.5mm and the grounding
resistance should be less than 10Ω.
• There is leakage current inside the drive and the value of the leakage current depends on the operating
conditions. To ensure the safety, the drive and the motor must be grounded and a Residual
Current Detector (i.e. RCD) is required. The type B RCD is recommended. The set value of the leakage
current is 300mA.
• To provide the over-current protection for the input side and facilitate the power-off maintenance, the drive
should be connected to the AC supply through a circuit breaker or a fuse.
Please refer the wiring diagram shown in Fig. 3-1 when commissioning.
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