ABB Switzerland DSPU131 3BSE000355R1 controller module card spare parts

Description

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, 32 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.

1. OF PRE-TRIGGER CYCLES: Enter the number of cycles of data, of the 32 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 Introduction to

FlexLogic™ on page 5–99.

The trace memory default FlexLogic™ is as follows: TRACE TRIG FLEXLOGIC 01 is “Any

Element PKP” and TRACE TRIG FLEXLOGIC 02 to 12 are “END

Virtual outputs are FlexLogic™ equations whose output (or result) can be used as inputs to

other equations. The 745 has five (5) virtual outputs. One application of these outputs may

be to contain a block of logic that is repeated for more than one output.

This section contains the FlexLogic™ equations to configure virtual outputs 1 to 5. The

setpoints describe the parameters of the FlexLogic™ equation for virtual output 1(5) as

described in Introduction to FlexLogic™ on page 5–99.

Protection and monitoring elements already have their own programmable delay timers,

where they are required. For additional flexibility, ten (10) independent timers are available

for implementing custom schemes where timers are not available. For example, a pickup

delay timer may be required on a logic input; or, a single delay timer may be required on

the output of a block of logic.

TIMER 1(10) START: Select the FlexLogic™ entry which, when operated or asserted, will

start timer 1(10).

TIMER 1(10) PICKUP DELAY: Enter the delay time during which the start condition for

timer 1(10) must remain operated or asserted, before the timer will operate.

TIMER 1(10) DROPOUT DELAY: Enter the delay time after which the start condition for

timer 1(10) must remain not operated or not asserted, before the timer will stop

operating.

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