Mitsubishi Electric MEsoftstart/I01 Users, Installation & Instruction Manual page 22

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The items in Figure 7 are further described in Table 7 below.
Item
Name
1.
Soft starter (MEsoftstart/I00,
MEsoftstart/I01,
MEsoftstart/I02,
MEsoftstart/I03,
MEsoftstart/I04)
2.
Moulded case circuit breaker
(MCCB)
3.
Fuses
4.
Bypass contactor
(Only applicable to
MEsoftstart models without
built-in bypass contactor)
5.
Bypass contactor relay circuit
breaker
(Only applicable to
MEsoftstart installations with
external bypass contactor)
6.
Emergency stop
7.
Motor Temperature Sensor
8.
Induction motor
Capacitors for power factor improvement
Capacitors for power factor improvement must not be connected on the output of the soft starter (between the soft starter and
the motor). If power factor correction is required, add the capacitors on the grid-side of the soft starter.
2
Mersen is a tradename of Mersen S.A. headquarted in
22 Installation Instructions
Table 7: Peripheral devices in the soft starter installation
Description
The MEsoftstart soft starter connects to the supply voltage on the top side and to the
motor on the bottom side.
The circuit breaker must be selected according to the maximum current of the motor.
The circuit breaker should ideally be controllable from an Emergency Stop button and
the soft starter Shunt Trip Relay.
The fuses are required to protect the soft starter SCRs against excessive currents. The
fuses should ideally be in line between the circuit breaker and the soft starter and
outside the delta for 6-wire installations. The fuses should be selected as follows for
the different MEsoftstart models:
Model
Minimum
Fuse current
MEsoftstart/I00
160A
MEsoftstart/I01
315A
MEsoftstart/I02
500A
MEsoftstart/I03
900A
MEsoftstart/I04
1000A
Installed to run the motor when at full speed. The 'BYPASS CONTACTOR' discrete
output signal (refer Table 13) from the soft starter should be used to control the bypass
contactor. Select the bypass contactor according to the maximum running current of
the motor as indicated on the motor manufacturer's label. If the motor is wired in an
inside-delta circuit, the bypass contactor may be selected to be 58% of the motor rated
running current.
Refer to Mitsubishi Electric's non-reversing Magnetic Contactors.
This circuit breaker is a 2A circuit breaker protecting the Soft starter output signal that
activates the external Bypass contactor via a 50/60Hz coil. The contactor coil is
powered from the supply voltage and should be selected according to the supply
voltage
A STOP button that will open the MCCB to disconnect all power to the soft starter and
motor.
The motor temperature sensor is read by the soft starter. The soft starter uses this
reading to protect the motor from overheating.
Configured as a 3-wire motor for normal delta connection or 6-wire for inside delta
wiring.
France.
Max I
t
Recommended
2
rating
Mersen
Fuse
2
6050
pc31ud69v160tf
125000
pc30ud69v315tf
322000
pc31ud69v500tf
1330000
pc33ud69v900tf
1330000
pc33ud69v1000tf
Refer
Figure 3
-
Figure 5
30 sec rating
@ 690V
330A
750A
1300A
2890A
3200A
Figure 25
-
-
-

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