Analog Signals - ABB REC650 ANSI Technical Manual

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PreFaultRecT

IEC05000487 V1 EN

The recording times definition

PreFaultRecT, 1

Pre-fault or pre-trigger recording time. The time before the fault including the operate time

of the trigger. Use the setting

Fault time of the recording. The fault time cannot be set. It continues as long as any valid

trigger condition, binary or analog, persists (unless limited by

PostFaultRecT, 3 Post fault recording time. The time the disturbance recording continues after all activated

triggers are reset. Use the setting

Limit time. The maximum allowed recording time after the disturbance recording was

triggered. The limit time is used to eliminate the consequences of a trigger that does not

reset within a reasonable time interval. It limits the maximum recording time of a recording

and prevents subsequent overwriting of already stored disturbances. Use the setting

TimeLimit to set this time.

Analog signals

Up to 40 analog signals can be selected for recording by the Disturbance recorder and

triggering of the Disturbance report function. Out of these 40, 30 are reserved for external

analog signals from analog input modules via preprocessing function blocks (SMAI) and

summation block (3PHSUM). The last 10 channels may be connected to internally

calculated analog signals available as function block output signals (phase differential

currents, bias currents and so on).

PostFaultRecT

PreFaultRecT to set this time.

PostFaultRecT to set this time.

1MRK 511 287-UUS A

en05000487.vsd

TimeLimit the limit time).

Technical manual

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