23
22
6. Wiring
■
With brake. 3-phase power source. Operates rotating in one direction.
Premium-efficiency, 3-phase motor
ESB-250, ESB-250-2
8 lead wires
Direct on-line starting
‒Δ
starting
Q
uick br
ak
ing cir
cuit 200V class
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 400V class
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
Tr: Transformer capacity 250–600VA, secondary voltage 200–220V
F:
Fuse 3–5A
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.
-Use with a quick braking circuit. For information on electromagnetic contactors 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.
-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.
-The brake unit is for 200V class. For 400V class power sources, prepare a 400V/200V transformer.
U1
V1
W1
V2
W2
U2
R
S
T
1 2 3 4 5 6
4 3
Rectifier
Brake
MC
MC
OLR
Tr
F
400V
200V
Motor
Tr
F
400V
200V
MC
M
MC
Δ
MC
R
OLR
U1
S
V1
T
W1 V2 W2 U2
1 2 3 4 5 6
4 3
Motor
Rectifier
Brake
MC
U1
V1
W1
V2
W2
U2
R
S
T
1 2 3 4 5 6
4 3
Rectifier
Brake
MC
MC
OLR
Motor
MC
M
MC
Δ
MC
R
OLR
U1
S
V1
T
W1 V2 W2 U2
1 2 3 4 5 6
4 3
Motor
Rectifier
Brake
MC
Con
tr
ol P
anel
M
ot
or
Con
tr
ol P
anel
M
ot
or