Rockwell Automation Publication 2094-UM001J-EN-P - March 2017 75
Connector Data and Feature Descriptions Chapter 4
Figure 34 - Load Duty-cycle Profile Example
Table 48 - Peak Duty Cycle Definition of Terms
Term Definition
(1)
(1) All current values are specified as RMS.
Continuous Current Rating (I
Cont
) The maximum value of current that can be output continuously.
Peak Current Rating (I
PKmax
)
The maximum value of peak current that the drive can output. This rating is
valid only for overload times less than T
PKmax
.
Duty Cycle (D)
The ratio of time at peak to the Application Period and is defined as:
Time at Peak (T
PK
)
The time at peak current (I
PK
) for a given loading profile. Must be less than
or equal to T
PKmax
.
Peak Current (I
PK
)
The level of peak current for a given loading profile. I
PK
must be less than or
equal to the Peak Current Rating (T
PKMAX
)
of the drive.
Base Current (I
Base
)
The level of current between the pulses of peak current for a given loading
profile. I
Base
must be less than or equal to the continuous current rating
(I
Cont)
of the drive.
Loading Profile
The loading profile is comprised of I
PK
, I
Base
, T
PK
, and D (or T) values and
completely specify the operation of the drive in an overload situation. These
values are collectively defined as the Loading Profile of the drive.
Application Period (T) The sum of the times at I
PK
(T
PK
) and I
Base
.
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