Sizing; Derating - ABB ACS310 User Manual

typical motor power. The kilowatt ratings apply to most IEC 4-pole motors. The
P
N
horsepower ratings apply to most NEMA 4-pole motors.
ACS310 is manufactured in frame sizes R0...R4. Some instructions and other
R0...R4
information that only concern certain frame sizes are marked with the symbol of the
frame size (R0...R4)

Sizing

The current ratings are the same regardless of the supply voltage within one voltage
range. 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.
Note 1: The maximum allowed motor shaft power is limited to 1.5 · P
exceeded, motor 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).

Derating

The load capacity decreases if the installation site ambient temperature exceeds
40 °C (104 °F) or if the altitude exceeds 1000 meters (3300 ft).
Temperature derating
In the temperature range +40 °C...+50 °C (+104 °F...+122 °F), the rated output
current is 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
°C
Altitude derating
In altitudes 1000...2000 m (3300...6600 ft) above sea level, the derating is 1% for
every 100 m (330 ft).
Switching frequency derating
Derate according to the switching frequency used (see parameter
FREQ) as follows:
Switching
frequency
No derating
4 kHz
Derate I
8 kHz
Derate I
12 kHz
Derate I
16 kHz
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U = 200...240 V
N
to 90%.
2N
to 80%.
2N
to 75%.
2N
Drive voltage rating
U = 380...480 V
N
No derating
Derate I to 75% for R0 or to 80% for R1...R4.
2N
Derate I to 50% for R0 or to 65% for R1...R4
2N
and derate maximum ambient temperature to
30 °C (86 °F).
Derate I to 50% and derate maximum ambient
2N
temperature to 30 °C (86 °F).
Technical data 309
. If the limit is
N
.
2N
SWITCHING
2606