Rockwell-automation 20D PowerFlex 700S with Phase I Control Reference Manual de usuario Pagina 31

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Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013 31
Detail Drive Configuration and Operation Chapter 1
ControlLogix Programming
To setup the PowerFlex 700S drive to follow a speed reference from the 20-
COMM-C, parameter 691 [DPI Ref Select] must be set to “Port 5.” Parameter
16 [Speed Ref Sel] must be set to “Speed Ref DPI.
Reference and Feedback values are floating-point values in the PowerFlex 700S.
Use the following logic to transmit and receive reference and feedback data as
unsigned integer data.
Reference to 700S
(Commanded RPM Base Motor Speed)
32767
------------------------------------------------------------------------------------------------------=
MOV
CPT
MOV
Speed Reference Via ControlNet to a PowerFlex 700S using a 20-COMM-C module.
The first move instruction is only for visual indication of the speed reference.
Move
Source CNet_Ref_RPM
1200.0
Dest CNet_Ref_RPM
1200.0
Compute
Dest CNet_700S_Ref_Float
22114.959
Expression (CNet_Ref_RPM/Motor_Base_Speed)*Speed_Conversion_Constant
Move
Source CNet_Ref_Float
22114.959
Dest PowerFlex700S_02:0.Data(1)
22115
Feedback RPM (700S Feedback 32767) Base Motor Speed×=
CPT
MOV
Convert Speed Feedback from 700S via 20-COMM-C
Feedback is returned as a 0 to 32767 number for 0 to Base Speed
Compute
Dest CNet_700S_Fdbk
1897
Expression
(CNet_700S_Fdbk_Float/Speed_Conversion_Constant)*Motor_Base_Speed
Move
Source
PowerFlex700S_02:1.Data[2]
22114.959
Dest CNet_700S_Fdbk_Float
34969.0
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