YASKAWA CPCR-MR08C Bulletin page 35

3.5 PRECAUTIONS FOR OPERATION
3.5.1 Noise Treatment (Fig. 3.20)
Servopack CPCR-MR[-_C uses a power transistor may sometimes occur depending on the wiring or
in the main circuit. When these transistors are grounding method. To reduce switching noise
dv
°f didtor -_- (switching noise) as much as possible, the recommended method of
switched, the
effect
wiring and grounding is shown below.
PANEL 1
SERVOPACK ]1
I'_ _"_,. 1 L,-=-,_ _ I ,_. CONDUIT Cf
} p) MOTOR '
R
NDING _t
;O pWpER , _1 _ SG 0V, E GROUNDING
/ ------I ............ I
"X_
_PANEL "MOTORFRAME
_.J _ GROUNDING C RECTLY GROUNDED
SPEED REFERENCE----"_-_ _ _'ONE POINT
_/-_"1 GROUNDING
ISOLATOR
T: Insulation
PERIPHERAL
DEVICE RF: Noise Filter
Note: By balancing the ground impedance viewed from PWM power
(by adding 1 X = 1 L equivalent reactor), the normal mode noise is
converted to the common mode noise. This is an effective action
for R.F.I. However, readjustment may be required.
Fig. 3.20 Noise Treatment (Example)
(i) Noise Filter Installation Table 3.5. The power supply to peripherals also
needs noise filters.
When noise filters are installed to prevent noise
from the power line, the preventive type must be
used. The recommended noise filter is shown in
Table 3.5 Recommended Noise Filter*
SERVOPACK Recommended Noise Filter
Type CPCR- Kind of Applicable Noise Filter
Type Specifications
MR01 C LF - 205 A Single-phase200, 100 VACclass5 A
MR02 C _ LF - 210 Single-phase200, 100 VAC class 10A
MR 05 C X LF - 215 Single-phase200, 100 VAC class 15A
MR 07 C -= LF - 215 Single-phase 200/100 VAC class 15 A
Correct
MR08C LF - 305 Three-phase 200 VACclass5 A
MR 15 C _ / LF- 310 Three-phase 200 VAC class 10 A
O
i _ .._ 1 i
o
MR 22 C _ LF - 315 Three-phase 200 VACclass15A
MR 55 C T/__ T LF- 330 Three-phase 200 VAC class 30 A
/ _-[- \
MR 75 C - LF- 340 Three-phase 200 VACclass40 A
Wrong
MR99C LF - 350 Three-phase 200VAC class50A
* Made by Tokin Corp.
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