Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual page 284

11. OPTIONS AND AUXILIARY EQUIPMENT
(f) Varistors 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.
Power
supply Varistor
voltage
100V class TND20V-431K
200V class TND20V-471K
400V class TND20V-102K
D
W E
d
Maximum rating
Permissible circuit Surge current
voltage immunity
AC[V ] DC[V] 8/20 s[A]
rms
275 350 10000/1 time
300 385 7000/2 time
7500/1 time
625 825
6500/2 time
T
Model
TND20V-431K
TND20V-471K
TND20V-102K
Note. For special purpose items for lead length (L), contact the manufacturer.
Maximum limit
Rated
Energy
pulse
immunity
power
2ms[J] [W]
195
215
1.0
400
D H
Max. Max. Max.
21.5 24.5
22.5 25.5
11 - 81
Static
Varistor voltage
capacity
voltage
(reference
value)
[A] [V] [pF]
710 1300 430(387 to 473)
775 1200 470(423 to 517)
100
1650 500 1000(900 to 1100)
T E (Note)L
1.0 min.
6.4 3.3
6.6 3.5 20
9.5 6.4
rating (range)
V1mA
[V]
[Unit: mm]
d W
0.05 1.0
0.8 10.0