information) and OPENCMD (for opening command information). These inputs can be
connected to terminal binary inputs if the information are generated from the field (that
is from auxiliary contacts of the close and open push buttons) or may be software
connected to the outputs of other integrated functions (that is close command from a
control function or a general trip from integrated protections).
7.10.3  Function block
ANSI06000275-2-en.vsd
CCRPLD (52PD)
I3P*
BLOCK
BLKDBYAR
CLOSECMD
OPENCMD
EXTPDIND
52B_A
52A_A
52B_B
52A_B
52B_C
52A_C
TRIP
PICKUP
ANSI06000275 V2 EN
Figure 237: CCRPLD (52PD) function block
7.10.4  Input and output signals
Table 229: CCRPLD (52PD) Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Three phase currents
BLOCK BOOLEAN 0 Block of function
BLKDBYAR BOOLEAN 0 Block of function at CB single phase auto re-closing
cycle
CLOSECMD BOOLEAN 0 Close command to CB
OPENCMD BOOLEAN 0 Open command to CB
EXTPDIND BOOLEAN 0 Pole discrepancy signal from CB logic
52b_A BOOLEAN 1 Phase A Pole opened indication from CB
52a_A BOOLEAN 0 Phase A Pole closed indication from CB
52b_B BOOLEAN 1 Phase B Pole opened indication from CB
52a_B BOOLEAN 0 Phase B Pole closed indication from CB
52b_C BOOLEAN 1 Phase C Pole opened indication from CB
52a_C BOOLEAN 0 Phase C Pole closed indication from CB
1MRK505222-UUS C Section 7
Current protection
469
Technical reference manual