ABB ACS850-04 series, Hardware Manual

Page: 126 / 164

Technical data
126
Derating
The continuous output currents stated above must be derated if any of the following
conditions apply:
• ambient temperature e40 °C (+104 °F)
• drive is installed higher than 1000 m above sea level.
Note: The final derating factor is a multiplication of all applicable derating factors.
Ambient temperature derating
In the temperature range +40…55 °C (+104…131 °F), the rated output current is
derated by 1% for every added 1 °C (1.8 °F) as follows:
Altitude derating
At altitudes from 1000 to 4000 m (3300 to 13123 ft) above sea level, the derating is
1% for every 100 m (328 ft). For a more accurate derating, use the DriveSize PC
tool.
P
N
Typical motor power in no-overload use.
I
Ld
Continuous rms output current. 10% overload is allowed for 1 minute every 5 minutes.
P
Ld
Typical motor power for light-overload use.
I
Hd
Continuous rms output current. 50% overload is allowed for 1 minute every 5 minutes.
P
Hd
Typical motor power for heavy-duty use.
Note: 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. The power ratings apply to most IEC 34 motors at the nominal voltage of 400 V or 500 V.
The DriveSize dimensioning tool available from ABB is recommended for selecting the drive, motor and gear combination
for the required motion profile.
1.00
0.85
+40 °C +55 °C
+104 °F +131 °F