21
20
6. Wiring
■
With brake. 3-phase power source. Operates rotating in one direction.
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
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 quick braking circuits, gang the brake circuit’s electromagnetic contactor to the motor’s electromagnetic contactor.
U1
V1 W1
V2 W2 U2
R
S
T
1 2 3 4
M N
Rectifier
Brake
MC
OLR
Motor
U1
V1
W1
V2 W2 U2
U1 V1 W1 V2 W2 U2
U1 V1 W1 V2 W2 U2
Motor
R
S
T
1 2 3 4
M N
Rectifier
Brake
MC
OLR
VR
MC
M
MC
Δ
R
OLR
MC
S T
1 2 3 4
M N
Motor
Motor
Rectifier
Brake
OLR
VR
MC
M
MC
Δ
R S T
1 2 3 4
M N
Rectifier
Brake
MC
MC
Con
tr
ol P
anel
M
ot
or
Con
tr
ol P
anel
M
ot
or