Chapter 4 WiringME300
4-1 System Wiring Diagram
Figure 4-1
Power input
terminal
Please refer to Chapter 9 Specification Table
in the user manual for details.
NFB or fuse
There may be a large inrush current during
power on. Refer to Section 7-2 Magnetic
Contactor / Air Circuit Breaker and Non-fuse
Circuit Breaker to select a suitable NFB or
Section 7-3 Fuse Specification Chart.
Electromagnetic
contactor
Switching the power ON/OFF before the
magnetic contactor more than once per hour
can damage the drive.
AC reactor
(input terminal)
When the mains power capacity is > 500 kVA
or when the drive is preceded by a capacitor
bank, the instantaneous peak voltage and
current may destroy the drive. In that case it is
recommended to install an AC input reactor
that also improves the power factor and
harmonics. The cable between reactor and
drive should be < 10m.
Please refer to Section 7-4
AC/DC Reactor.
Zero-phase
reactor
Can be used to reduce radiated emission,
especially in environments with audio
devices, and reduce input and output side
interference.
The effective range is AM band to 10 MHz.
Please refer to Section 7-5
Zero Phase
Reactors.
EMC filter
Can be used to reduce electromagnetic
interference.
Please refer to Section 7-6
EMC Filter.
Brake module
&
Brake resistor
(BR)
Can be used to shorten the deceleration time
of the motor.
Please refer to Section 7-1
Brake Resistors
and Brake Units Used in AC Motor Drives.
AC reactor
(output
terminal)
The wiring length of the motor affects
current peaks. It is recommended to install an
AC output reactor when the motor wiring
length exceeds the value listed in Section 7-4
AC/DC Reactor.
Table 4-1
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