Overview
The “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.
For more detailed information on”Position evaluation (POS_EVAL)” function, refer to ABB, Relion 670 Series manuals.
To see other supported functions, click here.
Function Identification
| Function description | IEC 61850 identification |
IEC 60617 identification |
ANSI/IEEE C37.2 device number |
| Position evaluation | POS_EVAL | – | – |
Signals
POS_EVAL function block
POS_EVAL Input signals
| POS_EVAL Input signals | |||
| Name | Type | Default | Description |
| POSITION | INTEGER | 0 | Position status including quality |
POS_EVAL Output signals
| POS_EVAL Output signals | |||
| Name | Type | Description | |
| OPENPOS | BOOLEAN | Open position | |
| CLOSEPOS | BOOLEAN | Close position | |
Logics & highlights
POS_EVAL Logic diagram
| 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 |