Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 157)

Applications 9-17
Speed Profiling Operation Each step is defined by three configuration parameters-
A - The Speed in rpm during the step [Step Speed ]
B - The Step Value [Step Value ]
C - The Type of Step to perform (time based, digital input activated,
or encoder count based) [Step Type]
The Profile control will output the selected Step Speed until the
conditions of the Step Type and Value are met.
Each step transition can be turned off or be one of three active
types.
If a STEP TYPE parameter:
= 0, the step is turned Off
= 1, the step is time based
= 2, Tb3 input based
= 3, Encoder Count based
The Step Type is determined by the third parameter in each parameter
group. The value of the Step Type parameter will change the meaning
of the Step Value parameter (P#250).
In our first example, we will make the first step time based by
entering a value of 1 in the Step Type parameter. Changing the value
of the Step Type parameter #251from a 0 to a 1, turns the step on, and
tells the control to interpret the step value in units of seconds.
Enter 400 rpm in the Step 1 Speed parameter #249.
Enter 10 seconds in the Step Value parameter #250.
EXAMPLE 1 (First Step)
P249 [Step 1Speed ] = +400 rpm
P250 [Step 1 Value] = 10 seconds
P251 [Step 1 Type] = 1 Time Step
To program a second step, we would setup the parameters #252
through #254.
Enter 1700 in Step Speed parameter #252. Turn the step on by
entering a value of 1 in the Step Type parameter #254. Enter 10
seconds in the Step Value parameter #253.
EXAMPLE 1 (Second Step)
P252 [Step 2 Speed ] = +1700 rpm
P253 [Step 2 Value]
= 10 seconds
P254 [Step 2 Type] = 1 Time Step
SPEED
VALUE
TYPE
#249
#250
#251
Parameter No.