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Section 12
Monitoring
372
External analog
signals
IEC05000653 V2 EN
Figure 162:
Analog input function blocks
The external input signals will be acquired, filtered and skewed and (after
configuration) available as an input signal on the AxRADR function block via the
SMAI function block. The information is saved at the Disturbance report base
sampling rate (1000 or 1200 Hz). Internally calculated signals are updated according
to the cycle time of the specific function. If a function is running at lower speed than
the base sampling rate, Disturbance recorder will use the latest updated sample until
a new updated sample is available.
Application configuration tool (ACT) is used for analog configuration of the
Disturbance report.
The preprocessor function block (SMAI) calculates the residual quantities in cases
where only the three phases are connected (AI4-input not used). SMAI makes the
information available as a group signal output, phase outputs and calculated residual
output (AIN-output). In situations where AI4-input is used as an input signal the
corresponding information is available on the non-calculated output (AI4) on the
SMAI function block. Connect the signals to the AxRADR accordingly.
For each of the analog signals, Operation = On means that it is recorded by the
disturbance recorder. The trigger is independent of the setting of Operation, and
triggers even if operation is set to Off. Both undervoltage and overvoltage can be used
as trigger conditions. The same applies for the current signals.
SMAI
GRPNAME
AI3P
AI1NAME
AI1
AI2NAME
AI2
AI3NAME
AI3
AI4NAME
AI4
AIN
Internal analog signals
1MRK 505 288-UEN A
A1RADR
A2RADR
GRPINPUT1
A3RADR
GRPINPUT2
GRPINPUT3
GRPINPUT4
GRPINPUT5
GRPINPUT6
...
A4RADR
INPUT31
INPUT32
INPUT33
INPUT34
INPUT35
INPUT36
...
INPUT40
en05000653-2.vsd
Technical manual
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