Disturbance Recorder Tags Identification - ABB RELION 620 Series Communication Protocol Manual

Section 3
Vendor-specific implementation
3.5.3
28
ACC Number Signal
67 Phase current IL3-B
68 Neutral voltage Uo-B
69 Phase voltage U1-B or phase-to-phase voltage U12-B
70 Phase voltage U2-B or phase-to-phase voltage U23-B
71 Phase voltage U3-B or phase-to-phase voltage U31-B
Disturbance recorder channels are the physical measurement inputs to the IED. It
depends on the IED type if all the disturbance recorder channel signals are available
or not. The IED may measure voltages either between phase and ground or between
phases. The contents in ACC 5...8 and 69...71 are coupled directly to these voltage
measurements.
The default setting of the native disturbance recorder supports the
channels, meaning physical analog input channels, listed in
User-defined channels in the 60870-5-103 files appear as ACC=255
(unknown channel).
Disturbance recorder channels can be selected from the disturbance
recorder configuration settings. Only the selected channels are
included in the 60870-5-103 files.

Disturbance recorder tags identification

According to the IEC 60870-5-103 standard the disturbance recorder tags (digital
signals) are identified by the same function type/information number combination
that corresponds to the signal in the normal IEC 60870-5-103 Class 1 event transfer.
This rule is followed by the IED if the indication signal in question is solely connected
to the disturbance recorder digital channel. If the signal, for example, is OR-ed
together with other internal digital signals or if the signal is not present in the normal
IEC 60870-5-103 Class 1 data, then the tag identification is always:
Function type = 5
Information number = disturbance recorder digital channel number
Tags are always sent in digital channel order.
1MRS757647 C
Table 11.
620 series
Communication Protocol Manual