2 power capacity and heat generation, 3 selection of circuit interrupter, 4 selection of leak current breaker – IAI America SCON-CA User Manual

Page 35

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Chapter 1 Specifications Check

25

1.2.2 Power Capacity and Heat Generation

Rated Power Capacity = Motor Power Capacity + Control Power Capacity

Peek Max. Power Capacity = Peek Max. Motor Power Capacity + Control Power Capacity

Actuator

Motor

Wattage

Motor Power

Capacity

[VA]

Peek Max.

Motor Power

Capacity [VA]

Control

Power

Capacity [VA]

Rated Power

Capacity [VA]

Peek Max.

Power

Capacity [VA]

Heat

Generation

[W]

20

26

78

74

126

30

30D

(Excluding RS)

46

138

94

186

31

30R (for RS)

138

414

186

462

33

60

138

414

186

462

33

100

234

702

282

750

35

100S (LSA)

283

851

331

899

36

150

328

984

376

1032

37

200

421

1263

469

1311

38

200S

(Excluding

LSA-N15H)

486

1458

534

1506

38

200S

(LSA-N15H)

773

2319

821

2367

56

300S (LSA)

662

1986

710

2034

40

400

920

2760

968

2808

45

600

1164

2328

1212

2376

56

750

3042

3090

750S

1521

4563

48

1569

4611

58

RS : Rotary Shaft

LSA : Linear Actuator

1.2.3 Selection of Circuit Interrupter

For the selection of the circuit breaker, perform it according to the following items.

• 3 times of the rated current flows to the controller during the acceleration/deceleration. Select an

interrupter that does not trip with this value of current. If a trip occurs, select an interrupter that

possesses the rated current of one grade higher. (Check the operation characteristics curves in

the product catalog.)

• Select an interrupter that does not trip with the in-rush current. (Check the operation

characteristics curves in the product catalog.)

• Consider the current that enables to cutoff the current even when a short circuit current is flown

for the rated cutoff current.

Rated Interrupting Current > Short Circuit Current = Primary Power Capacity / Power Voltage

Consider margin for the rated current on the circuit breaker.

1.2.4 Selection of Leak Current Breaker

• A ground fault circuit interrupter needs to be selected carefully considering the purposes of

prevention of fire and protection of human.

• Leak current varies depending on the capacity of connected motor, cable length and the

surrounding environment. Measure the leak current at the point where a ground fault circuit

interrupter is to be installed when leakage protection is conducted.

• Use the harmonic type (for inverter) for the ground fault circuit interrupter.

Rated Current for Circuit Interrupter >

(Rated Motor Power Capacity [VA] + Control Power Capacity [VA]) / AC Input Voltage × Safety Margin (reference

1.2 to 1.4 times)

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