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Building Technologies

Page 8 of 50 Last Revised: 4/11/2011

3.1 Sizing

When sizing drives there is a common misconception that matching the kilowatts of the motor to the drive is the correct method, and while most of the

time it will be satisfactory, there are occasions when there will be a shortfall in current capability due to installation-based derating factors, and special

load requirements. For example, do you need more than the rated Full Load Amps to start the motor? (e.g. certain types of pumps and compressors).

To ensure the power module is the correct one before bolting it on the wall, you can use the following chart to check suitability. Just read the actual

FLA from the motor nameplate (that matches the connection type, supply voltage, and Hz), and see which power module matches or exceeds the

desired value in the relevant temperature column. Note that the kW and Typical FLA values shown in the first, second, and sixth columns are

provided for comparative information only.

G120P Selection Table

Typical 4-pole Low OL Mode (Default) High OL mode

Motor FLA kW A 40C A 50C A 60C kW A 50C A 60C Frame Power Module with Class B

1.0 0.37 1.3 1.1 0.5 0.25 0.9 0.45 FSA 6SL3223-0DE13-7BA0

1.4 0.55 1.7 1.4 0.6 0.37 1.3 0.65 FSA 6SL3223-0DE15-5BA0

1.9 0.75 2.2 1.9 0.8 0.55 1.7 0.85 FSA 6SL3223-0DE17-5BA0

2.5 1.1 3.1 2.6 1.1 0.75 2.2 1.1 FSA 6SL3223-0DE21-1BA0

3.3 1.5 4.1 3.5 1.4 1.1 3.1 1.55 FSA 6SL3223-0DE21-5BA0

4.5 2.2 5.9 5.0 2.1 1.5 4.1 2.05 FSA 6SL3223-0DE22-2BA0

5.9 3 7.7 6.5 2.7 2.2 5.9 2.95 FSA 6SL3223-0DE23-0BA0

7.9 4 10.2 8.7 3.6 3 7.7 3.85 FSB 6SL3223-0DE24-0BA0

10.1 5.5 13.2 11.2 4.6 4 10.2 5.1 FSB 6SL3223-0DE25-5BA0

13.6 7.5 18 15.3 6.3 5.5 13.2 6.6 FSB 6SL3223-0DE27-5BA0

20.2 11 26 22.1 9.1 7.5 18 9 FSC 6SL3223-0DE31-1BA0

27.4 15 32 27.2 11.2 11 26 13 FSC 6SL3223-0DE31-5BA0

31.9 18.5 38 32.3 13.3 15 32 16 FSC * 6SL3223-0DE31-8AA0 *

38.0 22 45 38.3 15.8 18.5 38 19 FSD 6SL3223-0DE32-2BA0

51.8 30 60 51.0 21.0 22 45 22.5 FSD 6SL3223-0DE33-0BA0

63.8 37 75 63.8 26.3 30 60 30 FSE 6SL3223-0DE33-7BA0

75.3 45 90 76.5 31.5 37 75 37.5 FSE 6SL3223-0DE34-5BA0

91.5 55 110 93.5 38.5 45 90 45 FSF 6SL3223-0DE35-5BA0

122.0 75 145 123.3 50.8 55 110 55 FSF 6SL3223-0DE37-5BA0

151.4 90 178 151.3 62.3 75 145 72.5 FSF 6SL3223-0DE38-8BA0

Size PM by the maximum motor current and the desired operating temperature. Sometimes the required current rating can be 3 x FLA.

* 18.5 kW PM is currently only available with an integral class A EMC filter. Ensure you select the appropriate unit for your installation

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