Symbols; Sizing; Derating; Temperature Derating, I2N - ABB ACS150 series User Manual

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Symbols

Input
I
1N
I (480 V)
1N
Output
I
2N
I
2,1min/10min
I
2max
P
N
R0...R2

Sizing

Drive sizing is based on the rated motor current and power. To achieve the rated motor power given in
the table, the rated current of the drive must be higher than or equal to the rated motor current. Also the
rated power of the drive must be higher than or equal to compared to the rated motor power. The power
ratings are the same regardless of the supply voltage within one voltage range.
Note 1: The maximum allowed motor shaft power is limited to 1.5 · P
torque and current are automatically restricted. The function protects the input bridge of the drive
against overload.
Note 2: The ratings apply at ambient temperature of 40 °C (104 °F).
In multimotor systems, the drive output current rating I
sum of the input currents of all motors.

Derating

I : The load capacity decreases if the installation site ambient temperature exceeds 40 °C (104 °F) or
2N
if the altitude exceeds 1000 meters (3300 ft) or the switching frequency is changed from 4 kHz to 8, 12
or 16 kHz.
Temperature derating, I
In the temperature range +40 °C...+50 °C (+104 °F...+122 °F), the rated output current (I
decreased by 1% for every additional 1 °C (1.8 °F). The output current is calculated by multiplying the
current given in the rating table by the derating factor.
Example If the ambient temperature is 50 °C (+122 °F), the derating factor is 100% - 1 % · 10 °C =
90% or 0.90. The output current is then 0.90 · I
Altitude derating, I
In altitudes 1000...2000 m (3300...6600 ft) above sea level, the derating is 1% for every 100 m (330 ft).
For 3-phase 200 V drives, the maximum altitude is 3000 m (9800 ft) above sea level. In altitudes
2000...3000 m (6600...9800 ft), the derating is 2% for every 100 m (330 ft).
Technical data
continuous rms input current (for dimensioning cables and fuses)
continuous rms input current (for dimensioning cables and fuses) for drives with 480 V
input voltage
continuous rms current. 50% overload is allowed for one minute every ten minutes.
maximum (50% overload) current allowed for one minute every ten minutes
maximum output current. Available for two seconds at start, otherwise as long as
allowed by the drive temperature.
typical motor power. The kilowatt ratings apply to most IEC 4-pole motors. The
horsepower ratings apply to most NEMA 4-pole motors.
The ACS150 is manufactured in frame sizes R0...R2. Some instructions, technical
data and dimensional drawings which only concern certain frame sizes are marked
with the symbol of the frame size (R0...R2).
2N
2N
. If the limit is exceeded, motor
N
must be equal to or greater than the calculated
2N
.
2N
) is
2N
°C