Speed profile start up configuration, Speed profile start up configuration -18 – Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX User Manual

Page 158

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9-18

Applications

Description of Operation (Second Step) - In example #1, the Speed
profile would command 400 rpm for 10 seconds based on the
information in Step 1. The Speed Profile would then proceed to Step
#2 and command 1700 rpm for another 10 seconds. The control will
then proceed to the next step. Since Step #3 is not configured, the
profile will end and command zero speed.

End Actions - When the profile control is at the end of a sequence a
variety of actions can be taken. These are called End Actions. The
end actions are selected by parameter #238 [End Action Select] and
are configured via the End Action (EA) parameters #239 through
#243.

The kinds of End Actions available are:

If Parameter 238 (End Action Select)

= 0, Command zero speed.
= 1, Goto EA - Goto step indicated by parameter #240.
= 2, Input EA - End action speed (P #239) until TB3 input

transitions and then commands zero speed.

= 3, Compare EA - Command EA speed (P#239) until

compare parameter (P#242) equals compare value
(P#243).

= 4, Home EA - Command EA speed (P#239) until motor

returns to home position.

To cause the first profile to continually loop from step #2 back to step
#1, you would use the Goto end action.

Enter a value of 1 in the End Action (EA) select parameter. Then
select the target step by entering a value of 1 in the EA Goto
parameter #240.

When enabled, the profile will continually sequence between the Step
1 speed of 400 rpm, and the Step 2 speed of 1700 rpm in 10 second
intervals. This will continue until the profile is turned off via the
Profile Enable Parameter #235 (clearing bit 0).

The other End Action options (TB3 input, Compare and Home End),
will be discussed in more detail in a later section.

Speed Profile Start Up
Configuration

There are a variety of functions that must be configured before a
Speed Profile can be used with a drive. For this reason, additional
functionality was added to the Start Up procedure to simplify this
configuration.

If you have not entered the motor parameters or tuned the motor yet,
please use the Quick Tune procedure of the Start Up sequence at this
time.

If you are not familiar with the Start Up and Quick Motor Tune
features of the IMPACT, please review section 6-8 through 6-11 in this
manual.

When the motor tune is complete, bypass the Digital section and the
Analog Reference section of start up to reach Speed Profile
Configuration
.

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