ABB Relion 670 Series Technical Reference Manual page 961

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1MRK505222-UUS C

Technical reference manual

External analog

Internal analog signals

ANSI10000029 V1 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.

If the IED is preconfigured the only tool needed for analog configuration of the

Disturbance report is the Signal Matrix Tool (SMT, external signal configuration). In

case of modification of a preconfigured IED or general internal configuration the

Application Configuration tool within PCM600 is used.

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.

ANSI10000029-1-en.vsd

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