Rockwell Automation 1413-ME-PEA Capacitor Bank Controller - Series B - Manual (Page 53)

51 Publication 1413-UM001C-EN-P - May 2006
Chapter
5
Add Special Functionality
For added functionality, custom ladder-logic programming and
hardware integration are permitted, however, strict guidelines must be
followed to comply with warranty contracts.
• Altering of existing ladder-logic code is prohibited and will void
all warranty contracts.
• Additional functionality can only be implemented by adding
additional ladder logic code to subroutine PFMGR4.
• Additional subroutines may be written, but must be called
through PFMGR4.
PFMGR4 Logic The following sections provide details of PFMGR4 ladder-logic
programming.
Overview
There are three basic sections to PFMGR4:
• Power factor alarm
The power-factor alarming section specifies whether your
system KVAR is within its specified range and how long to wait
before alarming when it is out of range.
• Step control
The step control section specifies when to actuate or trip a step.
• Step routine
The step routine section specifies what step should be actuated
or tripped.