SMC Networks LECSB2-T Series User Manual

11. OPTIONS AND PERIPHERAL EQUIPMENT
11 - 27
(f) Varistor for input power supply (recommended)
Varistors are effective to prevent exogenous noise and lightning surge from entering the driver.
When using a varistor, connect it between each phase of the input power supply of the
equipment. For varistors, the TND20V-431K and TND20V-471K, manufactured by NIPPON
CHEMI-CON, are recommended. For detailed specification and usage of the varistors, refer to
the manufacturer catalog.
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 µs [A]
2 ms [J]
[W]
[pF]
[V]
200 V
class
TND20V-431K
275
350
10000/1
times
195
1.0
100
710
1300
430 (387 to 473)
TND20V-471K
300
385
7000/2
times
215
775
1200
470 (423 to 517)
[Unit: mm]
W E
H
D
L
T
φd
Model
D
Max.
H
Max.
T
Max.
E
±1.0
(Note)
L
min.
φd
±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
Note.
For special purpose items for lead length (L), contact the manufacturer.

SMC Networks LECSB2-T Series Specifications

General

Brand	SMC Networks
Model	LECSB2-T Series
Category	DC Drives
Language	English