30
6. Wiring
31
■
With Brake, 3-Phase Power Source, 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 C
ircuit
wiring
at start
MC
M
ON
MC
Δ
OFF
MC ON
Δ wiring when
acceleration is
completed.
MC
M
ON
MC
Δ
OFF
MC OFF
Q
uick Br
ak
ing C
ircuit
wiring
at start
MC
M
ON
MC
Δ
OFF
MC ON
Δ wiring when
acceleration is
completed.
MC
M
ON
MC
Δ
OFF
MC OFF
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 needs 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 1-1 on P5.
- Brake action delay time is different between normal and quick braking circuits.
Table 7-2 on P39 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 P37.
- For plugging operations using a quick braking circuit, interlock the brake circuit’s electromagnetic contactors with the motor’s normal
and reverse rotation electromagnetic contactors.
MC
M
MC
Y
R S T
MC
Δ
Normal rotation
Reverse rotation
OLR
U1 V1 W1 V2 W2 U2
1 2 3 4
M N
Motor
Rectifier
Brake
R
S
T
Normal rotation
Reverse rotation
OLR
U1
V1 W1
V2 W2 U2
1 2 3 4
M N
Rectifier
Brake
Motor
R
S
T
Normal rotation
Reverse rotation
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
Normal rotation
Reverse rotatio
n
OLR
U1 V1 W1 V2 W2 U2
Motor
VR
MC
1 2 3 4
M N
Rectifier
Brake
Con
tr
ol P
anel
M
ot
or
Co
nt
ro
l P
an
el
M
ot
or
Con
tr
ol P
anel
M
ot
or
Co
nt
ro
l P
an
el
M
ot
or