CHAPTER 8: AUTOMATION
AUTOMATION LOGIC
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
489
Disconnect interlock operands
DISC INTERLK1 CLS PERM ......................Asserted when all conditions have been satisfied for closing
disconnect 1.
DISC INTERLK1 OPEN PERM ..................Asserted when all conditions have been satisfied for opening
disconnect 1.
DISC INTERLK1 TAGGED..........................Asserted when a tag is applied to disconnect 1.
DISC INTERLK2
.............................................The operands listed above are available all disconnect
interlocking elements.
Disconnect configuration operands
DISC1 ANY POLE OPEN............................Asserted when at least one pole of disconnect 1 is open.
DISC1 BAD STATE........................................Asserted when the normally open and normally closed
disconnect indications disagree.
DISC1 CLOSE CMD.....................................Asserted when a close command has been executed on
disconnect 1.
DISC1 CLOSED.............................................Asserted when disconnect 1 has been closed.
DISC1 DISCREPANCY.................................Asserted when the three poles of the disconnect disagree (that
is, when they are not all opened or all closed).
DISC1 INTERMED........................................Asserted when the disconnect is in transition between the
opened and closed states.
DISC1 ONE POLE OPEN............................Asserted when only one pole of disconnect 1 is open
DISC1 OPEN CMD.......................................Asserted when an open command is executed on disconnect 1.
DISC1 OPENED ............................................Asserted when disconnect 1 is opened.
DISC1 SUBST CLOSED ..............................Asserted when the status of disconnect 1 has been substituted
with a closed indication.
DISC1 SUBST ON.........................................Asserted when disconnect status substitution is enabled for
disconnect 1.
DISC1 SUBST OPENED..............................Asserted when the status of disconnect 1 has been substituted
with an opened indication.
DISC1A BAD STATE.....................................Asserted when the normally open and normally closed breaker
indications disagree for pole A of disconnect 1.
DISC1A CLOSED..........................................Asserted when disconnect 1 pole A is closed.
DISC1A INTERMED.....................................Asserted when breaker 1 pole A is in transition between the
opened and closed states.
DISC1A OPENED .........................................Asserted when disconnect 1 pole A is opened.
DISC1B BAD STATE.....................................Asserted when the normally open and normally closed breaker
indications disagree for pole B of disconnect 1.
DISC1B CLOSED..........................................Asserted when disconnect 1 pole B is closed.
DISC1B INTERMED.....................................Asserted when breaker 1 pole B is in transition between the
opened and closed states.
DISC1B OPENED .........................................Asserted when disconnect 1 pole B is opened.
DISC1C BAD STATE.....................................Asserted when the normally open and normally closed breaker
indications disagree for pole C of disconnect 1.
DISC1C CLOSED..........................................Asserted when disconnect 1 pole C is closed.
DISC1C INTERMED.....................................Asserted when breaker 1 pole C is in transition between the
opened and closed states.
DISC1C OPENED .........................................Asserted when disconnect 1 pole C is opened.
DISC2
...............................................................The operands listed above are available for all disconnects.
Local-remote control scheme operands
L/R L ON..........................................................Asserted while the local control scheme is enabled.
L/R R ON.........................................................Asserted while the remote control scheme is enabled.