
B-65322EN/02 SVM 3.SPECIFICATIONS
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3.3 SELECTING CIRCUIT BREAKER, MAGNETIC
CONTACTOR, AND AC LINE FILTER
3.3.1 Selecting Circuit Breaker
Select a circuit breaker based on the continuous current ratings of the
individual motors listed below. When connecting more than one
amplifier, determine the rating of the circuit breaker based on the sum
of the continuous current ratings of the motors.
When the motor accelerates or decelerates rapidly, current about three
times as high as the continuous current rating may flow for
approximately three seconds. So, select a circuit breaker that does
not trip under such current flow conditions.
WARNING
Because of a possibility of cable burning, consider
protection co-ordination of the cables between the
circuit breaker output and the input of each
amplifier and the selected circuit breaker.
Table Input current for continuous output rating
Servo motor
Continuous current
rating with 3-phase
input
[Arms]
(Reference)
Power supply rating
with 3-phase input
[kVA]
(Reference)
Continuous current
rating with
single-phase input
[Arms]
(Reference)
Power supply rating
with single-phase
input
[kVA]
(Reference)
β0.2/5000is
0.2 0.08 0.5 0.12
β0.3/5000is
0.5 0.15 1.1 0.25
β0.4/5000is
0.6 0.20 1.4 0.32
β0.5/5000is
0.9 0.31 2.2 0.49
β1/5000is
1.8 0.62 4.3 1.0
β2/4000is
2.2 0.77 5.4 1.2
β4/4000is
3.3 1.2 8.1 1.9
β8/3000is
5.4 1.9 9.7 2.2
β12/3000is
8.0 2.8 - -
β22/2000is
11.1 3.9 - -
α1/5000i
2.2 0.77 5.4 1.2
α2/5000i
3.3 1.2 8.1 1.9
α4/4000i
6.2 2.2 - -
α8/3000i
7.1 2.5 - -
α12/3000i
13.4 4.6 - -
α22/3000i
17.8 6.2 - -
α2/5000is
3.3 1.2 8.1 1.9
α4/5000is
4.5 1.5 9.7 2.2
α8/4000is
11.1 3.9 - -
α12/4000is
12.0 4.2 - -