GE Industrial Solutions Entellisys System User Manual User Manual
Page 148

FlexLogic™
148
11
The characteristics of the different types of operands are listed in Table 11-1.
Table 11-1 FlexLogic operand types
Operand type
State
Example format
Characteristics [Input is ‘1’ (= ON) if...]
Contact Input
On
Contact Input On
Voltage is presently applied to the input
(external contact closed).
Off
Contact Input Off
Voltage is presently not applied to the input
(external contact open).
Contact Output
On
Contact Output On
Voltage exists across the contact.
Off
Contact Output Off Voltage does not exist across the contact.
Element (Analog)
Pickup
LONG TIME 1 PKP
The tested parameter is presently above the
pickup setting of an element, which responds
to rising values, or below the pickup setting
of an element, which responds to falling
values.
Dropout
LONG TIME 1 DPO
This operand is the logical inverse of the
above PKP operand.
Operate
LONG TIME 1 OP
The tested parameter has been above/below
the pickup setting of the element for the
programmed delay time, or has been at logic
1 and is now at logic 0 but the reset timer has
not finished timing.
Fixed
On
On
Logic 1
Off
Off
Logic 0
Virtual Input
On
Virtual Input 1 On
The virtual input is presently in the ON state.
Virtual Output
On
Virtual Output 1 On The virtual output is presently in the set state
(i.e., evaluation of the equation which
produces this virtual output results in a “1”).