Mitsubishi Electric FATEC FR-A800 Manual page 112

7
REVIEW OF INSTALLATION ENVIRONMENT
2) Line noise filter FR-BSF01, FR-BLF
This filter consists of the core. Therefore, it can be used for all models regardless of the
power supply voltage or capacity.
Wind the all three-phase cables around the filter in the same direction as shown in Fig.
7.19 and insert it to the inverter power input side. The more times it is wound, the more
effect the filter has, Wind the cables as much as possible, at least three times (four turns).
For the thick cable which cannot be wound three times (four turns) or more, use two filters
so that the number of winding times is three times (four turns) or more in total. (Inverter
input side)
Use either of the two types of the filter depending on the used cable gauge.
This filter has large effect on several 100 kHz or more. The filter can be used at the
inverter output side as well. When it is inserted to the inverter output side, the number of
winding times must be within three times (four turns).
<For inverter input side>
MCCB
Power
supply
Line noise filter
FR-BLF
FR-BSF01
Use multiple line noise filters to wind the cable four turns.
Line noise filter
Point: Wind each three-phrase cable to
the same direction.
Wind the cable at least
three times (four turns).
Shortest
Fig. 7.19 Installation of the line noise filter FR-BSF01, FR-BLF
Fig. 7.20 How to use multiple line noise filters
Line noise filter
Point: Wind three-phrase cables to the same line noise filter.
Fig. 7.21 Incorrect usage of line noise filters
<For inverter output side>
Inverter
Shortest
I nverter
U
R
V
S
W
T
Line noise filter
FR-BLF
FR-BSF01
For the thick cable which cannot be wound,
use at least four filters in series.
Inverter
R
S
T
Wind the cable within
three times (four turns).
Motor
IM
Four line noise filters
7.2 Noise
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