Process Control Instructions
252 Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Item Description
If CVHAlarm is set
CV = 100
If CVLAlarm is set
CV = 100
CV from windup algorithm
CVHAlarm
CVLAlarm
CV limited to 0 to 100%
(1) During instruction first scan, the instruction clears the alarm outputs.
The PIDE instruction limits the rate-of-change of CV when in Auto or
Cascade/Ratio mode or when in Manual mode and CVManLimiting is set. A
value of zero disables CV rate-of-change limiting.
The CV rate-of-change is calculated as:
where DeltaT is in seconds.
CV Rate-of-Change Limiting
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