Definition
R0…R4
ACS320 is manufactured in frame sizes R0…R4 .
Some instructions and other 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 typical motor
power, 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
N
(where P
N
= typical motor power) . If the
limit is exceeded, motor torque and current are
automatically restricted . The function protects the
input bridge of the drive against overload .
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
%
°C
· 10°C = 90% or 0 .90 . The output
current is then 0 .90 · I
2N
(where I
2N
= continuous output at
40°C, 0% overload)
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 2606 SWITCHING FREQ) as follows:
Switching
Frequency
Drive Voltage Rating
UN = 200…240 V
UN = 380…480 V
4 kHz
No derating
No derating
8 kHz
Derate I
2N
to 90% .
Derate I
2N
to 75% for R0 or to 80% for
R1…R4 .
12 kHz
Derate I
2N
to 80% .
Derate I
2N
to 50% for R0 or to 65% for
R1…R4 and derate maximum ambient
temperature to 30 °C (86 °F) .
16 kHz
Derate I
2N
to 75% .
Derate I
2N
to 50% and derate
maximum ambient temperature to
30°C (86°F)
I
2N
= continuous output at 40°C, 0% overload .
T
eCHnICal
d
aTa
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OM 1190-1 • MD4 VFD
Summary of Contents for ACS320
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