21
For 4/8 - pole, 2 - step speed single coil (Constant torque)
For star - delta starting
For direct starting of star-delta starting type
For three outlet cables
6-4) Motor connection
Fig.25 shows the motor connection and the standard specification for terminal codes.
Star
connection
for starting
MC
M
ON
MC
Δ
OFF
MC
ON
Delta
connection
after start
MC
M
ON
MC
Δ
ON
MC
OFF
For slow
speed (8P)
MC
L
ON
MC
H1
OFF
MC
H2
OFF
For high
speed (8P)
MC
L
OFF
MC
H1
ON
MC
H2
ON
MC
OLR
R
U
S
V
Motor
T
W
R
S
T
MC
Δ
MC
M
MC
OLR
Y
U1 V1 W1 V2
U2
W2
(U) (V) (W) (Y)
(X)
(Z)
Motor
MC
OLR
R
S
T
U1(U)
V2(Y)
V1(V)
W2(Z)
Motor
W1(W)
U2(X)
R
S
T
MC
H1
MC
L
OLR
OLR
1U 1V 1W 2U
2W
2V
(U
1
) (V
1
) (W
1
) (U
2
)
(W
2
)
(V
2
)
MC
H2
Motor
MC: Electromagnetic contactor
OLR: Overload protection device
These should be furnished by the customer.
Fig.25 Motor connection and terminal code
Note: Bracket ( ) contains previous motor terminal symbol.
