Rockwell Automation 160 SSC Series C FRN 7.xx - Manual (Page 54)

5-16 Parameters and Programming
PI Control Block Diagram Figure 5.1
81 [PI Proportional Gain]
Proportional gain used by the PI regulator. This parameter is scaled so that when
it is set to 1.0, the process response is 1 Hz when the process error is 1%. The
correct value for this parameter depends on the dynamics of the process being
controlled, as well as the desired response. This parameter is active when
P46 - [Input Mode] setting 9 is used.
0/10.00 Numeric
Value 0.01
82 [PI Integral Gain]
Integral Gain used by the PI regulator. This parameter is scaled so that when it
is set to 1.0, the process response is 10 Hz/sec when the process error is 1%.
The correct value for this parameter depends on the dynamics of the process
being controlled, as well as the desired response. This parameter is active when
P46 - [Input Mode] setting 9 is used.
0/10.00 Numeric
Value 0.01
83 [PI Process Reference]
The PI control will regulate to this set point value. It represents a percentage of
the analog input. This parameter is active when P46 - [Input Mode] setting 9 is
used. This parameter along with P72 - [Slip Compensation] also activates PI
control in drives using Firmware Version FRN 7.06. See page 5-17 for PI Control
Setup and Activation instructions.
0/100.0% 0.1% 0.0%
84 [PI Dead Band]
The PI control will ignore errors less than this value. This parameter is active when
P46 - [Input Mode] setting 9 is used.
0/10.0% 0.1% 0.0%
Program Group
No. Parameter Name/Description
Min./Max.
Range
Units
Factory
Default
ATTENTION: Hazard of personal injury or equipment damage
exists due to unpredictable changes in motor speed. Do not use
P72 - [Slip Compensation] and P83 - [Process Reference] to disable
PI control while the drive is running. Disable PI control only when
the drive is stopped.
This parameter applies only to the Analog Signal Follower model.
P83 -
[PI Process
Reference]
P81 -
[PI Proportional
Gain] P84 -
[PI Dead Band] P01 -
[Output
Frequency]
P82 -
[PI Integral
Gain]
Analog
Feedback
P58 -
[Internal
Frequency]
+
- +
+
TB3-8 Open
TB3-8 Closed