Rockwell Automation 22B PowerFlex 40 FRN 1.xx - 6.xx - Manual (Page 138)

E-2 StepLogic™, Basic Logic and Timer/Counter Functions
PowerFlex 40 Adjustable Frequency AC Drive FRN 1.xx - 6.xx User Manual
Publication 22B-UM001H-EN-E
StepLogic Using Timed Steps
To activate this function, set parameter P038 [Speed Reference] to 6 “Stp
Logic”. Three parameters are used to configure the logic, speed
reference and time for each step.
•
Logic is defined using parameters A140-A147 [Stp Logic x].
•
Preset Speeds are set with parameters A070-A077 [Preset Freq x].
•
Time of operation for each step is set with parameters A150-A157
[Stp Logic Time x].
The direction of motor rotation can be forward or reverse.
Figure E.1 Using Timed Steps
StepLogic Sequence
•
Sequence begins with a valid start command.
•
A normal sequence begins with Step 0 and transition to the next step
when the corresponding StepLogic time has expired.
•
Step 7 is followed by Step 0
•
Sequence repeats until a stop is issued or a fault condition occurs.
Time
0
Forward
Reverse
Step 0 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7
22B-UM001.book Page 2 Wednesday, January 22, 2014 11:04 AM