ABB Relion 670 series - Function block; Input and output signals

BLOCK
BC
LLACC
STILL
TRLL
ANSI05000158-1-en.vsd
AND
OR
0
0-tLoadOn
ANSI05000158 V1 EN
Figure 400: Loss-of-load acceleration - simplified logic diagram
Breaker closing signals can if decided be connected to block the function during
normal closing.
13.4.3 Function block
IEC05000333-2-en.vsd
ZCLCPLAL
I3P*
BLOCK
ARREADY
NDST
EXACC
BC
LLACC
TRZE
TRLL
IEC05000333 V2 EN
Figure 401: ZCLCPLAL function block
13.4.4 Input and output signals
Table 432: ZCLCPLAL Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Group signal for current input
BLOCK BOOLEAN 0 Block of function
ARREADY BOOLEAN 0 Autoreclosure ready, releases function used for fast trip
NDST BOOLEAN 0 Non directional criteria used to prevent instantaneous
trip
EXACC BOOLEAN 0 Connected to function used for tripping at zone
extension
BC BOOLEAN 0 Breaker Close
LLACC BOOLEAN 0 Connected to function used for tripping at loss of load
Section 13 1MRK505222-UUS C
Scheme communication
810
Technical reference manual