Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual - Manual (Page 74)

74 Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013
Chapter 1 Detail Drive Configuration and Operation
Figure 24 - Illustration of IL
High Overload
After continuous operation at the rated output current, overload may be 150%
rated output current (IH) for 1 minute as long as it is followed by a period of load
less than the rated current so that the output current over the duty cycle does not
exceed the rated output current (IH).
Example: If the duty cycle requires 150% rated output current for 1 minute of
every 10 minutes, the remaining 9 minutes must be at approximately 92% rated
current or less to maintain output current less than 100%. If the requirement is 1
minute out of 60 minutes, the remaining 59 minutes must be at approximately
98% rated current or less.
1 minute 9 minutes
1.1 x I L
Time
Current
I
L