Mitsubishi Electric MR-J5 Series User Manual page 186

■Varistor for input power supply (recommended)
Varistors are effective to prevent exogenous noise and lightning surges 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 Varistor
supply
voltage
200 V TND20V-431K
class
TND20V-471K
D T
E
W
φd
[Unit: mm]
Model D Max.
TND20V-431K 21.5
TND20V-471K
*1 For special purpose items for lead length (L), contact the manufacturer.
6 OPTIONS AND PERIPHERAL EQUIPMENT
184
6.13 Noise reduction techniques
Maximum rating
Permissible Surge
circuit voltage current
immunity
AC DC [V] 8/20 μs [A]
[Vrms]
275 350 10000/1 time
7000/2 times
300 385
H Max. T Max.
24.5 6.4
6.6
Maximum
limit voltage
Energy Rated [A]
immunity pulse
power
2 ms [J] [W]
195 1.0 100
215
E ±1.0 L Min.
3.3 20
3.5
Static Varistor voltage
capacity rating (range)
(reference V1 mA
[V]
value)
[pF] [V]
710 1300 430 (387 to 473)
775 1200 470 (423 to 517)
*1
φd ±0.05 W ±1.0
0.8 10.0