490
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
AUTOMATION LOGIC
CHAPTER 8: AUTOMATION
Selector switch operands
SELECTOR 1 ALARM ..................................Asserted when the position of selector 1 has been pre-selected
but not acknowledged.
SELECTOR 1 BIT 0.......................................Represents the first bit of the three-bit word encoding position
of selector 1.
SELECTOR 1 BIT 1.......................................Represents the second bit of the three-bit word encoding
position of selector 1.
SELECTOR 1 BIT 2.......................................Represents the third bit of the three-bit word encoding position
of selector 1.
SELECTOR 1 BIT ALARM...........................Asserted when the position of selector 1 has been pre-selected
with the three-bit control input but not acknowledged.
SELECTOR 1 POS 1.....................................Asserted when selector switch 1 is in position 1.
SELECTOR 1 POS 2.....................................Asserted when selector switch 1 is in position 2.
SELECTOR 1 POS 3.....................................Asserted when selector switch 1 is in position 3.
SELECTOR 1 POS 4.....................................Asserted when selector switch 1 is in position 4.
SELECTOR 1 POS 5.....................................Asserted when selector switch 1 is in position 5.
SELECTOR 1 POS 6.....................................Asserted when selector switch 1 is in position 6.
SELECTOR 1 POS 7.....................................Asserted when selector switch 1 is in position 7.
SELECTOR 1 PWR ALARM.......................Asserted when the position of selector switch 1 is
undetermined or restored from memory when the relay powers
up and synchronizes to the three-bit input.
SELECTOR 1 STP ALARM..........................Asserted when the position of selector 1 has been pre-selected
with the stepping up control input but not acknowledged.
SELECTOR 2...
...............................................The same set of operands shown above are available for
selector switch 2.
Synchrocheck operands
SYNC 1 CLS DPO.........................................Asserted when the synchrocheck 1 close has dropped out.
SYNC 1 CLS OP............................................Asserted when the synchrocheck 1 close has operated.
SYNC 1 DEAD S DPO.................................Asserted when the synchrocheck 1 dead source has dropped
out.
SYNC 1 DEAD S OP....................................Asserted when the synchrocheck 1 dead source has operated.
SYNC 1 SYNC DPO .....................................Asserted when the synchrocheck 1 has dropped out while in
synchronization.
SYNC 1 SYNC OP.........................................Asserted when the synchrocheck 1 has operated while in
synchronization.
SYNC 1 V1 ABOVE MIN.............................Asserted when the synchrocheck 1
V
1
value is above the
minimum live voltage.
SYNC 1 V1 BELOW MAX ..........................Asserted when the synchrocheck 1
V
1
value is below the
maximum dead voltage.
SYNC 1 V2 ABOVE MIN.............................Asserted when the synchrocheck 1
V
2
value is above the
minimum live voltage.
SYNC 1 V2 BELOW MAX ..........................Asserted when the synchrocheck 1
V
2
value is below the
maximum dead voltage.
SYNC 2...
..........................................................The set of operands shown above are available for
synchrocheck 2.
