Noise, Figure – Yaskawa J1000 Compact V/f Control Drive User Manual

Page 189

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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

B

A

D

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 7.7 Output-Side Noise Filter

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.

B

A

C

F

G

D

E

R/L1

MCCB

S/L2
T/L3

U/T1
V/T2
W/T3

A – Power supply
B – Drive
C – Shielded motor cable
D – Motor

E – Separate at least 30 cm
F – Controller
G – Signal line

Figure 7.8 Preventing Induced Noise

7.4 Installing Peripheral Devices

YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide

189

7

Peripheral Devices & Options

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