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Wires and Terminal Lugs
Refer to the following table for wires, terminal lugs, and screws used to connect the inverter power input
(R, S, T) and output (U, V, W).
Inverter Capacity
1 ~ 3 HP
5 HP
7.5 HP
200V
10 HP
Class
15 HP
20 HP
25 HP
30 HP
1 ~ 5 HP
7.5 HP
10 HP
400V
15 HP
Class
20 HP
25 HP
30 HP
Power and Motor Connection
Power supply must be connected
!
to the R, S, and T terminals.
Connecting it to the U, V, and W
terminals causes internal damages
to the inverter. Arranging the phase
sequence is not necessary.
3
Apply the rated torque to terminal screws. Loose screws can cause of short circuit or malfunction. Tightening the screws too much can
damage the terminals and cause a short circuit or malfunction.
4
Use copper wires with 600V, 75℃ ratings for wiring.
Terminal
Screw
3
Screw
Torque
Size
(Kgf·cm)
M3.5
15
M3.5
15
M4
15
M4
15
M5
26
M5
26
M6
45
M6
45
M3.5
15
M4
15
M4
15
M5
26
M5
26
M6
45
M6
45
R
S
T
3 Phase
Power Input
Ring Terminals
R,S,T
U,V,W
2-4
2-4
2-4
2-4
5.5-5
5.5-5
14-5
8-5
14-5
14-5
22-6
22-6
38-8
38-8
38-8
38-8
2-4
2-4
5.5-5
5.5-5
14-5
8-5
14-5
14-5
22-6
22-6
38-8
38-8
38-8
38-8
G N B1 B2 U
Motor
Motor should be connected to the
!
U, V, and W terminals.
If the forward command (FX) is on,
the motor should rotate counter
clockwise when viewed from the load
side of the motor. If the motor rotates
in the reverse, switch the U and V
terminals.
12
Chapter 1 - Installation
4
Wire
mm²
R,S,T
U,V,W
R,S,T
2
2
3.5
3.5
5.5
5.5
14
8
14
14
22
22
30
30
38
30
2
2
3.5
2
3.5
3.5
5.5
5.5
14
8
14
8
22
14
V W
AWG
U,V,W
14
14
12
12
10
10
6
8
6
6
4
4
2
2
2
2
14
14
12
14
12
12
10
10
6
8
6
8
4
6
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Troubleshooting
