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Main circuit terminal description
Three phase power supply input
AC three phase power supply input
Connect to the three phase motor
Connect to the brake resistor
Note:
(1) Input power supply R, S, T
1 There is no phase sequence requirement for input side wiring of frequency converter.
2 Circuit breaker, contactor, AC reactor, fuse, brake resistor and output reactor are optional parts. Please
refer to chapter 6 for details.
(2) P+, P-
1 After the power failure, there is residual voltage between P + and P -, all the LED indicator lights of
the operation keyboard go out, and wait for more than 15 minutes before wiring operation.
2 Do not connect the brake resistor directly to the bus, otherwise the inverter will be damaged or even
fire.
(3) P+, PB
1 Refer to the recommended value for brake resistance selection, and the wiring distance is less than 5m,
otherwise the inverter may be damaged.
(4) Output U, V, W
1 Please refer to chapter 6 for output cable.
2 No capacitor or surge absorber can be connected to the output side of the inverter, otherwise the
inverter will be damaged.
3 When the length of motor cable is more than 100m, it is easy to produce electrical resonance due to
the influence of distributed capacitance, so it is necessary to install AC output reactor near the
frequency converter.
(5) Grounding terminal PE
1
The terminal must be reliably grounded, and the grounding resistance must be less than 10Ω. Otherwise,
the equipment will work abnormally or even be damaged.
2
It is not allowed to share the grounding terminal PE and the power zero cable N terminal.
3
The impedance of protective grounding conductor must meet the requirement of withstanding large
short-circuit current in case of fault.
4
The size of protective grounding conductor shall be selected according to the table below.
Sectional area of single phase cable (S)
Minimum sectional area of protective conductor (S
p
)
5 Yellow and green cable must be used for protective grounding.
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