Sharp CP-SR421 Manual do Utilizador descarregar pdf (Página 263)

100

101

11. Options and peripheral devices

11 - 46

(f) 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 and TND20V-471K, manufactured by NIPPON CHEMI-

CON, are recommended. For detailed specification and usage of the varistors, refer to the

manufacturer catalog.

Maximum rating

Maximum

limit

voltage

Permissible circuit

voltage

Surge

current

immunity

Energy

immunity

Rated pulse

power

Static

capacity

(reference

value)

Varistor voltage rating

(range)

V1 mA

Power

supply

voltage

Varistor

AC [Vrms] DC [V] 8/20 μs [A] 2 ms [J] [W]

[A] [V]

[pF] [V]

TND20V-431K 275 350

10000/1

time

195 710 1300 430 (387 to 473)

200 V

class

TND20V-471K 300 385

7000/2

time

215

1.0 100

775 1200 470 (423 to 517)

[Unit: mm]

Model

Max.

± 1.0

(Note) L

min.

ĳd

± 0.05

± 1.0

TND20V-431K 6.4 3.3

TND20V-471K

21.5 24.5

6.6 3.5

20 0.8 10.0

Note. For special purpose items for lead length (L), contact the manufacturer.

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