32
6. Wiring
33
■
With Brake, 3-Phase Power Source, Plugging Operation
Premium-efficiency, 3-phase motor
ESB-250, ESB-250-2
8 Lead Wires
Direct On-Line Starting
‒Δ
Starting
Q
uick Br
ak
ing C
ircuit 200V Class
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 400V Class
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
Tr : Transformer capacity 250 – 600VA, secondary voltage 200 – 220V
F
: Fuse 3 – 5A
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.
- Use with a quick braking circuit. For information on electromagnetic contactors for quick braking circuits, see Table 6-4 on P37.
Rectifiers are external to the main unit. Rectifiers are made for indoor use. Install in an area where they will not come into contact with
water, etc.
- Brake unit is for 200V class. For 400V class power sources, prepare a 400V/200V transformer.
- Interlock the brake circuit’s electromagnetic contactor with the motor’s electromagnetic contactor.
U1
V1 W1
V2 W2 U2
1 2 3 4 5 6
4 3
Rectifier
Brake
MC
OLR
Motor
MC
M
MC
Δ
MC
OLR
U1 V1 W1 V2 W2 U2
1 2 3 4 5 6
4 3
Motor
Rectifier
Brake
MC
R S T
Normal rotatio
n
Reverse rotatio
n
U1
V1 W1
V2 W2 U2
1 2 3 4 5 6
4 3
Rectifier
Brake
MC
OLR
Tr
F
400V
200V
Motor
Tr
F
400V
200V
MC
M
MC
Δ
MC
OLR
U1 V1 W1 V2 W2 U2
1 2 3 4 5 6
4 3
Motor
Rectifier
Brake
MC
R S T
Normal rotatio
n
Reverse rotatio
n
R S T
Normal rotation
Reverse rotation
R S T
Normal rotation
Reverse rotation
Co
nt
ro
l P
an
el
M
ot
or
Co
nt
ro
l P
an
el
M
ot
or
Co
nt
ro
l P
an
el
M
ot
or
Co
nt
ro
l P
an
el
M
ot
or