10
Rockwell Automation Publication KNX-TD005A-EN-P - October 2021
Kinetix 6200 and Kinetix 6500 Modular Multi-axis Servo Drives
Peak Current Specifications
Load Duty-cycle Profile Example
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 for only 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 composed 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
.
D = T
T
PK
x
100
%
I
Pk
I
Cont
I
Base
T
Pk
T
D = T
T
PK
x
100
%
