YASKAWA E1000 - Page 344

8.5 Installing Peripheral Devices
344 YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual
Figure 8.14
Figure 8.14 Input-Side Noise Filter (Three-Phase 200/400 V)
■ Output-Side Noise Filter
A noise filter on the output side of the drive reduces inductive noise and radiated noise. Figure 8.15 illustrates an
example of output-side noise filter wiring.
NOTICE: Do not connect phase-advancing capacitors or LC/RC noise filters to the output circuits. Improper application of noise filters
could result in damage to the drive.
Figure 8.15
Figure 8.15 Output-Side Noise Filter
• Radiated Noise: Electromagnetic waves radiated from the drive and cables create noise throughout the radio
bandwidth that can affect surrounding devices.
• Induced Noise: Noise generated by electromagnetic induction can affect the signal line and may cause the controller to
malfunction.
Preventing Induced Noise
Use a noise filter on the output side or use shielded cables. Lay the cables at least 30 cm away from the signal line to
prevent induced noise.
Figure 8.16
Figure 8.16 Preventing Induced Noise
A–Power supply C–Drive
B – Input-side noise filter
(model LNFD-)
D – Other control device
A – Power supply C – Output-side noise filter
B–Drive D–Motor
A – Power supply E – Separate at least 30 cm
B – Drive F – Controller
C – Shielded motor cable G – Signal line
D – Motor
C
D
A
B
R/L1
U
V
W
R
S
T
E
MCCB
MCCB
S/L2
T/L3
YEC_
TMon
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C
D
B
A
M
R/L1
MCCB
S/L2
T/L3
U/T1
V/T2
W/T3
1
2
3
4
5
6
YEC_
TMon
ly
B
A
C
F
G
E
R/L1
MCCB
S/L2
T/L3
U/T1
V/T2
W/T3
D
M
YEC_
TMon
ly
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