Allen-Bradley LOGIX 5000 User Manual

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Chapter 3
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018 327
Description
The HPF instruction uses the Order parameter to control the sharpness of the
cutoff. The HPF instruction is designed to execute in a task where the scan rate
remains constant.
The HPF instruction uses these equations:
When: The instruction uses this transfer function:
Order = 1
Order = 2
Order = 3
with these parameter limits (where DeltaT is in seconds):
Parameter Limitations
WLead first order
LowLimit
WLead second order
LowLimit
WLead third order
LowLimit
HighLimit
Whenever the value computed for the output is invalid, NAN, or INF, the
instruction sets Out = the invalid value. When the value computed for the output
becomes valid, the instruction initializes the internal parameters and sets Out =
In.
Affects Math Status Flags
No
Major/Minor Faults
None specific to this instruction. See Common Attributes for operand-related
faults.

Allen-Bradley LOGIX 5000 Specifications

General

Brand	Allen-Bradley
Model	LOGIX 5000
Category	Controller
Language	English