Sharp CP-SR421 User Manual download pdf (Page 216)

10. CHARACTERISTICS

10 - 7

10.4 Cable bending life

The bending life of the cables is shown below. This graph calculated values. Since they are not guaranteed

values, provide a little allowance for these values.

b: Standard encoder cable

Standard motor power cable

Standard electromagnetic brake cable

SSCNET III cable using inside panel standard cord

SSCNET III cable using outside panel standard cable

a: Long flex life encoder cable

Long flex life motor power cable

Long flex life electromagnetic brake cable

SSCNET III cable using long distance cable

1 × 10

5 × 10

1 × 10

5 × 10

1 × 10

5 × 10

1 × 10

5 × 10

1 × 10

5 × 10

1 × 10

4 7 10 20 40 70 100 200

Bend radius [mm]

Number of flexing times [time]

10.5 Inrush currents at power-on of main circuit and control circuit

The following table indicates the inrush currents (reference data) that will flow when 240 V AC is applied at

the power supply capacity of 2500 kVA and the wiring length of 1 m.

Inrush currents (A

0-P

)

Servo amplifier

Main circuit power supply (L1, L2, and

L3)

Control circuit power supply (L11 and

L21)

MR-J4-10B, MR-J4-20B,

MR-J4-40B, MR-J4-60B

30 A (attenuated to approx. 3 A in 20

ms)

MR-J4-70B, MR-J4-100B

34 A (attenuated to approx. 7 A in 20

ms)

MR-J4-200B, MR-J4-350B

113 A (attenuated to approx. 12 A in 20

ms)

20 A to 30 A (attenuated to approx. 1 A

in 20 ms)

MR-J4-500B

42 A (attenuated to approx. 20 A in 20

ms)

MR-J4-700B

85 A (attenuated to approx. 20 A in 30

ms)

34 A (attenuated to approx. 2 A in 20

ms)

Since large inrush currents flow in the power supplies, always use molded case circuit breakers and

magnetic contactors. (Refer to section 11.10.)

When circuit protectors are used, it is recommended that the inertia delay type, which is not tripped by an

inrush current, be used.

bending life encoder cable

bending life motor power cable

bendin

life electroma

netic brake cable

1 2 ... 211 212 213 214 215 216 217 218 219 220 221 ... 403 404

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Sharp CP-SR421 User Manual Page 216

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