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Emotron VS Series Quick Start Guide
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Fig.3-16 Three-phase 415V 0.75~2.2KW Main Circuit Terminals
◆
c: Three-phase 415V 4.0~7.5KW Main Circuit Terminals
Control circuit
terminals
Main circuit
terminals
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PB
(+) (-)
RFI
Fig.3-17 4.0
~
7.5kW Schematic of main circuit terminals
Main circuit terminal functions
Terminal marks
Designation and function of terminals.
L1,L2,L3
AC power input terminals .
For 3-phase AC415V power supply, connecting L1,L2,L3
For1-phase AC 220V power supply, connecting L1,L2.
U, V, W
AC output terminals of inverter for connecting to 3-phase
induction motor.
(+), (-)
Positive and negative terminals of internal DC bus.
PB
Positive and negative terminals of internal DC bus.
Connecting terminals of braking resistor. One end
connected to + and the other to PB.
Grounding terminal.
Remarks:
No phase sequence requirements on wiring of the input side of inverter. Wiring
Precautions:
1
)
Power input terminals L1, L2, L3.
◆
The cable connection on the input side of the AC drive has no phase sequence requirement.
2
)
DC bus (+), (
-
)
◆
Terminals (+) and (-) of DC bus have residual voltage after the AC drive is switched off. After
indicator CHARGE goes off, wait at least 10 minutes before touching the equipment Otherwise, you
may get electric shock.
◆
Do not connect the braking resistor directly to the DC bus. Otherwise, it may damage the AC drive
and even cause fire.
3
)
Braking resistor connection terminals (+), PB
◆
The cable length of the braking resistor shall be less than 5 m. Otherwise, it may damage the AC
drive.
4
)
AC drive output terminals U, V, W
◆
The capacitor or surge absorber cannot be connected to the output side of the AC drive. Otherwise,
it may cause frequent AC drive fault or even damage the AC drive.