EN-12
(Note 3) Breaker for wiring
Install a Molded Case Circuit Breaker(MCCB), fuse or magnetic contact (MC) on the inverter's power
supply side. Refer to Table 7-1-b of PCST-3450 and select the MCCB or Fuses.
When using as a UL/cUL Standard certified product, install the UL certified MCCB or fuse as
explained in section 9-1 of PCST-3450.
(Note 4) Selection of power voltage for auxiliary equipment power supply
For the 400V Series (X075K0 and larger), switch the auxiliary equipment power supply selection
connector according to the rated voltage of the power being used. If the following settings do not apply
to the power voltage being used, select the closest power voltage.
For 380V to 415V, short circuit across JP-1
For 416V to 460V, short circuit across JP-2
For 461V to 480V, short circuit across JP-3 (factory setting state)
(Note 5) Power voltage/frequency
Prepare the power supply to match the following power voltage and frequency.
Voltage system
Type
Power voltage Frequency
200V series
N000K7 to N011K0
200 to 240V ± 10%
50/60Hz ± 5%
N015K0 to N045K0
200 to 230V ± 10%
50/60Hz ± 5%
400V series
X000K7 to X475K0
380 to 480V ± 10%
50/60Hz ± 5%
(Note 6) Power supply capacity
Make sure that capacity of the transformer used as the inverter's power supply is within the following
range. (For 4% impedance transformer)
Heavy-duty rating (N045K0, X055K0 and smaller)
500kVA or less
Heavy-duty rating (X075K0 and larger), Normal-duty
Capacity that is 10-times or less inverter
capacity
If the above values are exceeded, install an ACL on the inverter's input side.
(Refer to Table 7-1-b of PCST-3450.)
(Note 7) Noise measures
The inverter will generate high harmonic electromagnetic noise, so using the following noise
measures is recommended.
a) Use a drive with built-in filter or use noise filter on the input side of the inverter. Refer to Table
7-1-b of PCST-3450 and select the filter.
b) Keep the length of the wire between the noise filter and inverter as short as possible, and wire it
as far away from the noise filter's power supply side.
c) Use a shield cable for the inverter and motor wiring, and connect the shield to the inverter's
terminal and motor grounding terminal. Note that if the cable is long, the higher harmonic leakage
current may increase, the overcurrent limit function may malfunction, and in extreme cases, the
current detector in the unit could be damaged. In this case, lower the carrier frequency as low as
possible, and increase the inverter capacity as required.
d) Separate the main circuit wiring from the control circuit wiring. Do not place the wires in the same
conduit, lay them in parallel or bundle them, etc. If the wires must be laid in parallel, separate them
by 30cm or more, and pass each through a metal conduit. If the wires need to be intersected,
make sure that they intersect at a right angle.
FAN
MC
JP-1
JP-2
JP-3
From power input L1
From power input L2
Transformer AUX PCB
Gate drive PCB
Tap selection connector
Step-down
transformer
