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745
Transformer Management Relay
Trace Memory
! TRACE MEMORY
5–90
FIGURE 5–49: Self-Test Relays Scheme Logic
PATH: SETPOINTS
!"
S5 OUTPUTS
[!]
NO. OF PRE-TRIGGER
CYCLES: 12 cycles
TRACE TRIG FLEXLOGIC
MESSAGE
01: Any Element PKP
OUTPUT 1 FLEXLOGIC
MESSAGE
10: END
Trace memory is the oscillography feature of the 745. All system inputs are
synchronously digitized at a sampling rate of 64 times per power cycle. Upon
occurrence of a user-defined trigger condition, 16 cycles of oscillography waveforms
are captured into trace memory. The trigger condition is defined by a FlexLogic™
equation, and the number of pre-trigger cycles of data captured is programmable.
This section contains the settings (including the FlexLogic™ equation) to configure
trace memory triggering.
•
NO. OF PRE-TRIGGER CYCLES: Enter the number of cycles of data, of the 16
cycles of waveform data to be captured, that are to be pre-trigger information.
•
TRACE TRIG FLEXLOGIC 01 to 10: The following 10 messages are the
parameters of the FlexLogic™ equation for trace memory triggering as
described in the introduction to FlexLogic™.
The Trace Memory default FlexLogic™ is as follows:
TRACE TRIG FLEXLOGIC 01
TRACE TRIG FLEXLOGIC 02
http://www.GEindustrial.com/multilin
!"
TRACE MEMORY
Range: 1 to 15 in steps of 1
Range: any FlexLogic™ input or gate
↓
Range: any FlexLogic™ input or gate
: Any Element PKP
to
: END
12
S5 Outputs
GE Multilin
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