424
11 OPTIONS AND PERIPHERAL EQUIPMENT
11.14 Noise reduction techniques
■
Varistor for input power supply (recommended)
Varistors are effective to prevent exogenous noise and lightning surge from entering the servo amplifier. When using a
varistor, connect it between each phase of the input power supply of the equipment. For varistors, the TND20V-431K,
TND20V-471K and TND20V-102K, manufactured by Nippon Chemi-Con, are recommended. For detailed specification and
usage of the varistors, refer to the manufacturer catalog.
[Unit: mm]
*1 For special purpose items for lead length (L), contact the manufacturer.
Power
supply
voltage
Varistor
Maximum rating
Maximum
limit voltage
Static
capacity
(reference
value)
Varistor voltage
rating (range) V1
mA
Permissible
circuit voltage
Surge
current
immunity
Energy
immunity
Rated
pulse
power
[A]
[V]
AC
[Vrms]
DC [V] 8/20
s [A] 2 ms [J]
[W]
[pF]
[V]
100 V
class/200
V class
TND20V-431K
275
350
10000/1
time
7000/2
times
195
1.0
100
710
1300
430 (387 to 473)
TND20V-471K
300
385
215
775
1200
470 (423 to 517)
400 V
class
TND20V-102K
625
825
7500/1 time
6500/2
times
400
1.0
100
1650
560
1000 (900 to 1100)
Model
D Max.
H Max.
T Max.
E
1.0
d
0.05
W
1.0
TND20V-431K
21.5
24.5
6.4
3.3
20
0.8
10.0
TND20V-471K
6.6
3.5
TND20V-102K
22.5
25.5
9.5
6.4
20
0.8
10.0
W
E
H
D
L
T
ɐ
d
Содержание MELSERVO-J4 series
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