ABB ACS150 User Manual page 110

110
Symbols
Input
I
1N
Output
I
2N
I
2,1min/10min
I
2max
P
N
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
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 metres (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
90% or 0.90. The output current is then 0.90 · I
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
If the 8 kHz switching frequency (see parameter 2606) is used:
• Derate I
• Ensure that parameter
frequency if/when the drive's internal temperature exceeds 110°C. See parameter
If the 12 kHz switching frequency (see parameter 2606) is used:
• Derate I
• Ensure that parameter
frequency if/when the drive's internal temperature exceeds 100°C. See parameter
Technical data
continuous rms input current
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.
to 75% for R0 or to 80% for R1...R2, and
2N
2607 SWITCH FREQ CTRL = 1 (ON), which reduces the switching
to 50% for R0 or to 65% for R1...R2 and derate ambient temperature to 30°C (86°F), and
2N
2607 SWITCH FREQ CTRL = 1 (ON), which reduces the switching
. If the limit is exceeded, motor
N
.
2N
%
· 10°C =
°C
2607 for details.
2607 for details.