Definitions; Sizing - ABB ACS480-04-09A8-1 Hardware Manual

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130 Technical data

Definitions

The ratings are valid at a maximum surrounding air temperature of 50 °C (122 °F), with
the default drive switching frequency of 4 kHz (parameter 97.01), and with an installation
altitude below 1000 m (3281 ft).
U
Nominal input voltage of the drive. For input voltage range U1, refer to
N
Electrical power network specification (page
I
Nominal input current with typical motor power P
1N
current, for dimensioning cables and fuses.
I
Light-duty input current (rms) with typical motor power P
1Ld
dimensioning cables and fuses.
I
Maximum output current. Available for 2 seconds every 10 minutes when
max
the output frequency is less than 9 Hz. Otherwise maximum current is
1.5 × I
value.
I
Nominal output current. Maximum continuous rms output current (no
N
overload).
P
Typical motor power in nominal use (no overloading). The kilowatt ratings
N
are applicable to most IEC 4-pole motors.
I
Continuous rms output current. Allows 10% overload for 1 minute every
Ld
10 minutes.
P
Typical motor power in light-duty use (10% overload). The kilowatt ratings
Ld
are applicable to most IEC 4-pole motors. The horsepower ratings are
applicable to most NEMA 4-pole motors.
I
Continuous rms output current. Allows 50% overload for 1 minute every
Hd
10 minutes.
P
Typical motor power in heavy-duty use (50% overload). The kilowatt
Hd
ratings are applicable to most IEC 4-pole motors. The horsepower ratings
are applicable to most NEMA 4-pole motors.

Sizing

ABB recommends the DriveSize tool for selecting the drive, motor and gear combination
(https://new.abb.com/drives/software-tools/drivesize). You can also use the ratings
tables.
The minimum recommended nominal current of the motor is 40% of the drive nominal
output current (I
) . If the motor has a lower nominal current rating than this, the drive
N
cannot accurately measure the motor current.
. Maximum current setting (parameter 30.17) can also limit the
Hd
160).
. Continuous rms input
N
, for
Ld

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