Rockwell Automation Publication PFLEX-AT001L-EN-P - September 2017 21
Determining Dynamic Brake Requirements Chapter 2
Important: The value of AL should not exceed 100%.
This is the result of the calculation outlined in Step 5. Record this value on
page 23.
This is the result of the calculation outlined in Step 5. Record this value on
page 23.
Now that the values of
AL and PL have been calculated, they can be used to
determine whether an internal or external resistor can be used. Since the internal
resistor package offers significant cost and space advantages, it will be evaluated
first.
Percent Average Load AL 100
P
av
P
db
---------==
AL 100
40
40
---- 100%==
Percent Peak Load PL 100
P
b
P
db
---------==
PL 100
607.9
40
---------- 1520%==
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