Chapter 4 Wiring Guide of VFD
In this chapter we introduce the wiring of VFD
·Wiring can only be done after the drive’s AC power is disconnected, all the LEDs on the operation panel are off
and waiting for at least 10 minutes. Then, you can remove the panel.
·Wiring job can only be done after confirming the charge indicator on the right bottom is off and the voltage
between main circuit power terminals + and - is below DC36V.
·Wire connections can only be done by trained and authorized person
·Check the wiring carefully before connecting emergency stop or safety circuits.
·Check the drive’s voltage level before supplying power to it, otherwise human injuries or equipment damage
may happen.
·Check whether the Variable Speed Drive’s rated input voltage is in compliant with the AC supply voltage before
using.
·Dielectric strength test of the drive has been done in factory, so you need not do it again.
·Refer to chapter 2 on connected braking resistor or braking kit.
·It is prohibited to connect the AC supply cables to the drive’s terminals U, V and W.
·Grounding cables should be copper cables with section area bigger than 3.5mm², and the grounding resistance
should be less than 10Ω.
·There is leakage current inside the drive. The total leakage current is greater than 3.5mA, depending on the
usage conditions. To ensure safety, both the drive and the motor should be grounded, and a leakage current
protector (RCD) should be installed. It is recommended to choose B type RCD and set the leakage current at
300mA.
·The drive should be connected to the AC supply via a circuit breaker or fuse to provide convenience to input
over-current protection and maintainance.
4.1 Wiring and Configuration of Main circuit terminal
4.1.1 Terminal Type of Main Loop’s Input and Output
Suitable model：FV20-2S-0004G~FV20-4T-0450G/0550L Suitable mode：FV20-4T-0550G/0750L~FV20-4T-10000G
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