Definition; Sizing; Derating - Daikin ACS320 Operation Manual

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 (where P
N
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) .
www .DaikinApplied .com
= typical motor power) . If the
N

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
current is then 0 .90 · I
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
UN = 200...240 V
4 kHz No derating
8 kHz Derate I
2N
12 kHz Derate I
2N
16 kHz Derate I
2N
I = continuous output at 40°C, 0% overload .
2N
103
T
eCHnICal
%
· 10°C = 90% or 0 .90 . The output
°C
(where I = continuous output at
2N 2N
Drive Voltage Rating
UN = 380...480 V
No derating
Derate I to 75% for R0 or to 80% for
2N
to 90% .
R1...R4 .
Derate I to 50% for R0 or to 65% for
2N
to 80% . R1...R4 and derate maximum ambient
temperature to 30 °C (86 °F) .
Derate I to 50% and derate
2N
to 75% . maximum ambient temperature to
30°C (86°F)
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