Automation Logic Equation Editor - GE D90 Plus Instruction Manual

AUTOMATION LOGIC
About automation timers

Automation logic equation editor

424
Unlike earlier versions of the D90
latches and not through the specific setting menus. Automation timers have the following
syntax:
TIMER (IN, PKP, DPO).
A timer accepts any digital input or the output of any logical operator as its
The timer output is asserted when its input is asserted for a time equal to or greater than
the parameter. Likewise, the timer output will reset when its input has been reset for a
PKP
time equal to or greater than its
For example, the following logic produces an output that will pickup 10 seconds after
contact input F1 closes and will dropout 1 second after the contact opens.
Figure 347: Using an automation timer
Virtual analogs can also be assigned to control the pickup and dropout of timers. In the
following example, two virtual analogs are used to define the pickup and dropout of two
different timers.
Figure 348: Using virtual analogs to control automation timers
An automation logic equation can contain up to 4096 entries, including the
a disabled element is selected as an automation logic entry, the associated state flag will
never be asserted (set to logic 1).
Select the Settings > Automation > Automation FlexLogic > FlexLogic Equation Editor
menu item to open the automation logic equation editor window.
Plus
, automation timers are implemented like gates or
parameter.
DPO
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 8: AUTOMATION
parameter.
IN
operator. If
END