ABB REC650 ANSI Technical Manual page 491

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1MRK 511 287-UUS A

Technical manual

External analog

Internal analog signals

IEC05000653 V2 EN

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

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 = Enabled 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 Disabled. Both undervoltage and overvoltage can be used as

trigger conditions. The same applies for the current signals.

en05000653-2.vsd

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