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