ABB ACS 600, Hardware Manual

Page: 23 / 52

Appendix A – ACS/ACC 600 Technical Data
601/604/607 US Supplement A-3
Symbols Used in Rating Table
Output Current
Derating For High
Ambient Temperature
When the ambient temperature of the air around the drive exceeds the
rated temperature, the rated output current is decreased by some
percentage of the normal current rating for every degree above the
rated temperature. The output current is calculated by multiplying the
I
2N
current given in the rating table by a derating factor determined
from the derating curves. The derating factor is determined by the
ambient temperature, the type of enclosure and the duty classification.
ACx 601 Drives Note:Curve numbers refer to the Derate Curves and the Derate Table
which immediately follow the derating instructions. Maximum
temperature in all cases should not exceed 50
°
C.
For IP 21/22 enclosures with Normal Use:
Below +40
°
C: Apply curve 1 (no derate) to I
2N
for all drives
except model ACx 601-0100-2 which requires application of
curve 2.
Above +40
°
C: Decrease I
2N
by 3.5% for every 1
°
C above
40
°
C. Reduction should begin from the value applicable at 40
°
C
(i.e., 92% of I
2N
for ACx 601-0100-2, 100% for all other drives).
For IP 21/22 enclosures with Heavy Duty Use:
Below +40
°
C: Use the I
2HD
current rating given in the Drive
Output Ratings table. No derating is required.
Above +40
°
C: Calculate a tentative derated current per the IP 21/
22 Normal Use, Above +40
°
C instructions above. Compare this
calculated value with the I
2HD
current given in the Drive Output
Ratings table. The current rating equals the smaller of I
2HD
from the
Drive Output Ratings table or the calculated derated current.
Normal use (10% overload capacity): Heavy-duty use (50% or 100% overload capacity):
I
2N
rated RMS output current I
2hd
rated RMS output current
I
2Nmax
short term rms overload current (allowed
for one minute every 10 minutes). I
2hdmax
rms overload current (allowed for one
minute every 10 minutes or 2 seconds
every 15 seconds) Maximum current
depends on parameter setting, refer to
Firmware Manual.
S
N
rated apparent output power S
hd
rated apparent output power
P
N
typical motor power. The power ratings in
kW apply to most IEC 34 motors. The
power ratings in HP apply to most four pole
NEMA rated motors. P
hd
typical motor power. The power ratings in
kW apply to most IEC 34 motors. The
power ratings in HP apply to most four pole
NEMA rated motors.