ABB Relion 670 series, Technical Reference Manual, Page: 759 / 1232

12.4.12 Position evaluation POS_EVAL
12.4.12.1 Introduction
Position evaluation (POS_EVAL) function converts the input position data signal
POSITION, consisting of value, time and signal status, to binary signals OPENPOS or
CLOSEPOS.
The output signals are used by other functions in the interlocking scheme.
12.4.12.2 Logic diagram
POS_EVAL
POSITION OPENPOS
CLOSEPOS
IEC08000469-1-en.vsd
Position including quality
Open/close position of
switch device
IEC08000469-1-EN V1 EN
Only the value, open/close, and status is used in this function. Time information is not
used.
Input position (Value) Signal quality Output OPENPOS Output CLOSEPOS
0 (Breaker intermediate) Good 0 0
1 (Breaker open) Good 1 0
2 (Breaker closed) Good 0 1
3 (Breaker faulty) Good 0 0
Any Invalid 0 0
Any Oscillatory 0 0
12.4.12.3 Function block
POS_EVAL
POSITION OPENPOS
CLOSEPOS
IEC09000079_1_en.vsd
IEC09000079 V1 EN
Figure 377: POS_EVAL function block
12.4.12.4 Input and output signals
Table 379: POS_EVAL Input signals
Name Type Default Description
POSITION INTEGER 0 Position status including quality
1MRK505222-UUS C
Section 12
Control
753
Technical reference manual