YASKAWA J1000 Technical Manual page 171

8.4 Installing Peripheral Devices
A – Power supply
B – Drive
• Radiated Noise: 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.
A – Power supply
B – Drive
C – Shielded motor cable
D – Motor
Reducing Radiated/Radio Frequency Noise
The drive, input lines, and output lines generate radio frequency noise. Use noise filters on input and output sides and install
the drive in a metal enclosure panel to reduce radio frequency noise.
Note: The cable running between the drive and motor should be as short as possible.
A – Metal enclosure
B – Power supply
C – Noise filter
D – Drive
170
A
MCCB
R/L1
S/L2
T/L3
Figure 8.7 Output-Side Noise Filter
A MCCB
R/L1
S/L2
T/L3
Figure 8.8 Preventing Induced Noise
C
B
MCCB
R/L1
S/L2
T/L3
Figure 8.9 Reducing Radio Frequency Noise
http://nicontrols.com
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
E – Separate at least 30 cm
F – Controller
G – Signal line
A
D E F
U/T1
V/T2
W/T3
E – Noise filter
F – Shielded motor cable
G – Motor
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
D
D
F
G