Model number
SRC311-2-4-0040K-55
1 2 3 4 5 6 10987
WS003647
1. SmartRun
™
2. Control
3. Product family
4. Number of controlled pumps
5. Generation
6. Frame size (2–6)
7. Input voltage
2:200 – 240V
4:380 – 480V
5:500 – 600V
8. Power for example, 0040 = 4
9. Power unit
K:Kilowatt
H:Horsepower
10. Enclosure
20:IP20
55:IP55
66:IP66
Manual de-rating
Manually de-rating the maximum nominal power allows the drive to operate under
conditions that are not allowed without manual de-rating.
• For ambient temperature
Enclosure Maximum temperature
without de-rating
De-rated by Maximum permissible
temperature
IP20 50°C (122°F) N/A 50°C (122°F)
IP55 40°C (104°F) 1.5% per 1°C (1.8°F) 50°C (122°F)
IP66 40°C (104°F) 2.5% per 1°C (1.8°F) 50°C (122°F)
• For altitudes above 1000 m (3281 ft), de-rated 1% per 100 m (32.8 ft).
• For phase conversion of the power supply from 3×230 V to 1×230 V, require the drive
to be de-rated 50%.
• For switching frequency
Enclosure 8 kHz 12 kHz 16 kHz 24 kHz 32 kHz
IP20 N/A 20% 30% 40% 50%
IP55 10% 10% 15% 25% N/A
IP66 10% 25% 35% 50% 50%
Higher frequency reduces audible "ringing" noise from the motor and improves the
output current waveform, at the expense of increased heat losses within the drive.
Product Description
SRC 311 - SmartRun
™
Installation, Operation, and Maintenance Manual 11
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