YASKAWA L1000A - Page 373

8.5 Installing Peripheral Devices
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual 373
Peripheral Devices & Options
8
■ Output-Side Noise Filter
A noise filter on the output side of the drive reduces inductive noise and radiated noise. Figure 8.26 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 8.24
Figure 8.26 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 8.25
Figure 8.27 Preventing Induced Noise
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
B
A
M
R/L1
MCCB
S/L2
T/L3
U/T1
V/T2
W/T3
1
2
3
4
5
6
YEA_
TMon
ly
B
A
C
F
G
E
R/L1
MCCB
S/L2
T/L3
U/T1
V/T2
W/T3
D
M
YEA_
TMon
ly
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