S5 Outputs; Introduction To Flexlogic - GE Multilin 745 Instruction Manual

745
Transformer Management Relay
Description
Introduction to
FlexLogic™
5–86

S5 Outputs

The page contains the settings to configure all outputs. The 745 has
S5 OUTPUTS
nine digital outputs (one solid-state, four trip rated form A contacts, and four
auxiliary form C contacts) which are fully programmable using FlexLogic™
equations. FlexLogic™ is a highly flexible and easy-to-use equation format which
allows any combination of protection and monitoring elements, logic inputs,
outputs, and timers to be assigned to any output, using multiple input AND, OR,
NAND, NOR, XOR, and NOT Boolean logic gates. Each digital output can have an
equation of up to 20 parameters. Five "virtual outputs" are also available, each
having an equation containing up to 10 parameters, whose output can be used as a
parameter in any other equation.
In addition to these outputs, the conditions to trigger a waveform capture (trace
memory) is also programmable using FlexLogic™. A 10 parameter equation is
provided for this purpose.
A FlexLogic™ equation defines the combination of inputs and logic gates to operate
an output. Each output has its own equation, an equation being a linear array of
parameters. Evaluation of an equation results in either a 1 (= ON, i.e. operate the
output), or 0 (= OFF, i.e. do not operate the output).
The table below provides information about FlexLogic™ equations for all outputs:
Table 5–10: FlexLogic™ Output Types
Name Type
Output Relay 1 solid-state
Output Relays 2 to 5 trip-rated form A
contacts
Output Relays 6 to 8 form C contacts
Self-Test Relay form C contacts
dedicated for self-test
(not programmable)
Trace Trigger waveform capture
trigger
Virtual Outputs internal register (for use
in other equations)
* refers to the power system cycle as detected by the frequency circuitry of the 745.
As mentioned above, the parameters of an equation can contain either INPUTS or
GATES.
Table 5–11: FlexLogic™ Input Types
Inputs Input is "1" (= ON) if...
Element* pickup The pickup setting of the element is exceeded
Element* operate The pickup setting of the element is exceeded for the
programmed time delay
Logic Inputs 1 to 16 The logic input contact is asserted
Virtual Inputs 1 to 16 The virtual input is asserted
Output Relays 1 to 8 The output relay operates
(i.e. evaluation of the FlexLogic™ equation results in a '1')
Virtual Outputs 1 to 5 The virtual output operates
(i.e. evaluation of the FlexLogic™ equation results in a '1')
Timers 1 to 10 The timer runs to completion
(i.e. the 'start' condition is met for the programmed time
delay)
* refers to any protection or monitoring element in page
http://www.GEindustrial.com/multilin
S5 Outputs
Equation Evaluation Rate
Parameters
20 every 1/2 cycle*
20 each every 1/2 cycle*
20 each every 100 ms
--- every 100 ms
10 every 1/2 cycle*
10 each every 1/2 cycle*
.
S4 ELEMENTS
GE Multilin