25
24
6. Wiring
■
With Brake. 3-phase motor. Plugging operation
Premium-efficiency, 3-phase motor
FB-8E – FB-15E
8 lead wires
Direct on-line starting
‒Δ
starting
Nor
mal br
ak
ing cir
cuit
At start
Wiring
MC
M
ON
MC
Δ
OFF
MC ON
When acceleration
is completed
Δ wiring
MC
M
ON
MC
Δ
ON
MC OFF
Con
tr
ol P
anel
M
ot
or
Q
uick br
ak
ing cir
cuit
At start
Wiring
MC
M
ON
MC
Δ
OFF
MC ON
When acceleration is
completed
Δ wiring
MC
M
ON
MC
Δ
ON
MC OFF
Con
tr
ol P
anel
M
ot
or
Electromagnetic contactor for normal and reverse rotation
MC: Electromagnetic contactor
OLR: Overload protection device or electronic thermal relay
VR: Varistor (for protecting contact points, rectifier, etc.)
Customer to prepare.
-This diagram shows cases for motors with standard Japanese domestic specifications. Please consult with us for motors with
overseas specifications.
-For brake types, see Table 1-6 on P7.
-Brake action delay time is different for normal and quick braking circuits.
Table 7-2 on P35 shows action delay time. Choose the circuit that matches work requirements.
-Use a quick braking circuit to improve hoisting equipment and stopping precision.
-Use a quick braking circuit when a phase-advancing capacitor is mounted.
-For information on electromagnetic contactors and varistors for quick braking circuits, see Table 6-4 on P32.
-For plugging operations using a quick braking circuit, gang the brake circuit’s electromagnetic contactors to the motor’s normal
and reverse rotation electromagnetic contactors.
R S
R S
T
OLR
U1
V1 W1
V2 W2 U2
1 2 3 4
M N
Rectifier
Brake
Motor
MC
M
MC
Y
S
R
T
MC
Δ
OLR
U1 V1 W1 V2 W2 U2
1 2 3 4
M N
Motor
Rectifier
Brake
T
OLR
VR
MC
U1 V1 W1
V2 W2 U2
Motor
1 2 3 4
M N
Rectifier
Brake
MC
M
MC
Y
R S T
MC
Δ
OLR
U1 V1 W1 V2 W2 U2
Motor
VR
MC
1 2 3 4
M N
Rectifier
Brake
Normal rotation
Rev
erse rotation
Normal rotation
Rev
erse rotation
Normal rotation
Rev
erse rotation
Normal rotation
Rev
erse rotation
Con
tr
ol P
anel
M
ot
or
Con
tr
ol P
anel
M
ot
or