6.2.3 Function block
IEC08000002-2-en.vsd
OC4PTOC
I3P*
U3P*
BLOCK
BLKST1
BLKST2
BLKST3
BLKST4
TRIP
TR1
TR2
TR3
TR4
START
ST1
ST2
ST3
ST4
STL1
STL2
STL3
2NDHARM
IEC08000002 V2 EN
Figure 30: OC4PTOC function block
6.2.4 Signals
Table 30: OC4PTOC Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Three phase group signal for current inputs
U3P GROUP
SIGNAL
- Three phase group signal for voltage inputs
BLOCK BOOLEAN 0 Block of function
BLKST1 BOOLEAN 0 Block of step 1
BLKST2 BOOLEAN 0 Block of step 2
BLKST3 BOOLEAN 0 Block of step 3
BLKST4 BOOLEAN 0 Block of step 4
Table 31: OC4PTOC Output signals
Name
Type Description
TRIP BOOLEAN General trip signal
TR1 BOOLEAN Trip signal from step 1
TR2 BOOLEAN Trip signal from step 2
TR3 BOOLEAN Trip signal from step 3
TR4 BOOLEAN Trip signal from step 4
START BOOLEAN General start signal
ST1 BOOLEAN Start signal from step 1
ST2 BOOLEAN Start signal from step 2
ST3 BOOLEAN Start signal from step 3
ST4 BOOLEAN Start signal from step 4
Table continues on next page
Section 6 1MRK 511 287-UEN A
Current protection
82
Technical manual