Table 512: Binary signals: ATCCOUT / YLTCIN
Signal Description
raiseVolt Order to TCMYLTC or TCLYLTC (84) to make a raise command
lowerVolt Order to TCMYLTC or TCLYLTC (84) to make a lower command
automaticCtrl The regulation is in automatic control
extRaiseBlock Block raise commands
extLowerBlock Block lower commands
Table 513: Binary signals contained in word “enableBlockSignals”: ATCCOUT / YLTCIN
Signal Description
CircCurrBl Alarm/Block tap changer operation because of high circulating current
CmdErrBl Alarm/Block tap changer operation because of command error
OCBl Alarm/Block tap changer operation because of over current
MFPosDiffBl Alarm/Block tap changer operation because the tap difference between a follower and the
master is greater than the set value
OVPartBl Alarm/Block raise commands because the busbar voltage is above
Vmax
RevActPartBl Alarm/Block raise commands because reverse action is activated
TapChgBl Alarm/Block tap changer operation because of tap changer error
TapPosBl Alarm/Block commands in one direction because the tap changer has reached an end
position, or Alarm/Block tap changer operation because of tap changer error
UVBl Alarm/Block tap changer operation because the busbar voltage is below
Vblock
UVPartBl Alarm/Block lower commands because the busbar voltage is between
Vmin
and
Vblock
Table 514: Analog signal: ATCCOUT / YLTCIN
Signal Description
currAver Value of current in the phase with the highest current value
In case of parallel control of transformers, the data set sent from output signal ATCCOUT to other
TR8ATCC (90) blocks input HORIZx contains one "word" containing 10 binary signals and 6 analog
signals:
Table 515: Binary signals contained in word “status”: ATCCOUT / HORIZx
Signal Description
TimerOn This signal is activated by the transformer that has started its timer and is going to tap
when the set time has expired.
automaticCTRL Activated when the transformer is set in automatic control
mutualBlock Activated when the automatic control is blocked
disc Activated when the transformer is disconnected from the busbar
receiveStat Signal used for the horizontal communication
TermIsForcedMast
er
Activated when the transformer is selected Master in the master-follower parallel control
mode
Table continues on next page
Section 14 1MRK 502 066-UUS B
Control
884
Technical manual
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