Variable torque fan/pump applications – Rockwell Automation 22B PowerFlex 40 FRN 1.xx - 6.xx User Manual

Page 41

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PowerFlex 40 Adjustable Frequency AC Drive FRN 1.xx - 6.xx User Manual

Publication 22B-UM001H-EN-E

TIP: You can also change the speed reference by editing the parameter

A069

[Internal Freq] in program mode. For details on how to enter the

program mode, see

Viewing and Editing Parameters on page 2-5

.

Note: The default value of

A069

[Internal Freq] is 0 Hz. For IP20 rated

PowerFlex 40 drives, the default value of this parameter is 60 Hz.

Variable Torque Fan/Pump Applications

For improved motor tuning performance when using a premium efficient
motor on a variable torque load, set

A084

[Boost Select] to option 2

“35.0, VT”.

22B-UM001.book Page 3 Wednesday, January 22, 2014 11:04 AM

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