YASKAWA L1000A Technical Manual page 373

Output-Side Noise Filter
■
A noise filter on the output side of the drive reduces inductive noise and radiated noise.
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
• 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
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
A
MCCB
R/L1
S/L2
T/L3
A – Power supply
B – Drive
Figure 8.26 Output-Side Noise Filter
A MCCB
R/L1
S/L2
T/L3
A – Power supply
B – Drive
C – Shielded motor cable
D – Motor
Figure 8.27 Preventing Induced Noise
8.5 Installing Peripheral Devices
B C
U/T1
1 4
V/T2
2 5
W/T3
3 6
C – Output-side noise filter
D – Motor
B
C
U/T1
V/T2
W/T3
E
G
F
E – Separate at least 30 cm
F – Controller
G – Signal line
Figure 8.26 illustrates an
D
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D
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ly
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