Yaskawa Z1000 AC Drive HVAC - Manual (Page 246)

C
D
A
B
R/L1
U
V
W
R
S
T
E
MCCB
MCCB
S/L2
T/L3
A – Power supply
B – Input-side noise filter
(model LNFD-)
C – Drive
D – Other control device
Figure 6.10 Input-Side Noise Filter
n Output-Side Noise Filter
A noise filter on the output side of the drive reduces inductive noise and radiated noise. Figure 6.11 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.
C
D
B
A
M
R/L1
MCCB
S/L2
T/L3
U/T1
V/T2
W/T3
1
2
3
4
5
6
A – Power supply
B – Drive C – Output-side noise filter
D – Motor
Figure 6.11 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.
B
A
C
F
G
E
R/L1
MCCB
S/L2
T/L3
U/T1
V/T2
W/T3
D
M
A – Power supply
B – Drive
C – Shielded motor cable
D – Motor E – Separate at least 30 cm
F – Controller
G – Signal line
Figure 6.12 Preventing Induced Noise
6.5 Installing Peripheral Devices
246 YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual