YASKAWA V1000 Series Technical Manual page 273

Output-Side Noise Filter
n
A noise filter on the output side of the drive reduces inductive noise and radiated noise.
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.
Radiated noise:
TERMS TERMS
• Electromagnetic waves radiated from the drive and cables create noise throughout the radio bandwidth that can affect 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.
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
A
MCCB
MCCB
A – Power supply
B – Input-side noise filter Model: LNFD-
oo
Figure 8.6 Input-Side Noise Filter (Single-Phase 200 V)
MCCB
A
MCCB
A – Power supply
B – Input-side noise filter Model: LNFD-
oo
Figure 8.7 Input-Side Noise Filter (Three-Phase 200/400 V)
A
MCCB
R/L1
S/L2
T/L3
A – Power supply
B – Drive
Figure 8.8 Output-Side Noise Filter
B C
R/L1
1 3
S/L2
2 4
E
D
C – Drive
D – Other control device
B C
R/L1
R U
S/L2
S V
T/L3
T W
E
D
C – Drive
D – Other control device
Figure 8.8 illustrates an example of output-side noise filter
B C
U/T1
1 4
V/T2
D
2 5
W/T3
3 6
C – Output-side noise filter
D – Motor
8.4 Installing Peripheral Devices
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