IAI America SCON-C - Manual (Page 45)

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3.4.2 Power-supply Capacities and Heat Output
Rated power-supply capacity = Motor power-supply capacity + Control power-supply capacity
Maximum momentary power-supply capacity = Maximum momentary motor power-supply capacity + Control
power-supply capacity
RS: Rotational
axis
200L: 200-W linear actuator
300L: 300-W linear actuator
400L: 400-W linear actuator
3.4.3 Selecting a Breaker
Follow the guidance below when selecting a breaker.
 Current 3 times more than the rated current flows in the controller during acceleration/deceleration. Select a
breaker that does not trip when this current is conducted. If a trip occurs, select a breaker with rated current
one rank higher.
 Select a breaker that does not trip due to rush current. (Refer to operation characteristic curves described in
catalogues by manufacturers.)
 Select a breaker with rated breaking current values that can break without fails even if short-circuit current is
conducted.
 Rated breaking current > short-circuit current = primary side power supply capacity / power supply voltage
Select a circuit breaker with rated current with sufficient margin.
Rated breaker current > (Rated motor power-supply capacity [VA] + Control power-supply capacity
[VA]) / AC input voltage
Moreover, leak current breakers must be selected with specific purposes such as protection against fire,
protection of humans and so on. Furthermore, leak current shall be measured at the location where a leak
current breaker is installed. Please use a leak current breaker supporting higher harmonics.
Actuator motor
wattage
Motor power-
supply capacity
[VA]
Maximum
momentary motor
power-supply
capacity [VA]
Control power-
supply capacity
[VA]
Rated power-
supply capacity
[VA]
Maximum
momentary power-
supply capacity
[VA]
Heat
output
[W]
(Excluding RS)
(Excluding RS)