Table 428:
Binary signals: ATCCOUT / YLTCIN
Signal
Description
raiseVolt
Order to TCMYLTC or TCLYLTC to make a raise command
lowerVolt
Order to TCMYLTC or TCLYLTC to make a lower command
automaticCtrl
The regulation is in automatic control
extRaiseBlock
Block raise commands
extLowerBlock
Block lower commands
Table 429:
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
Umax
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
Ublock
UVPartBl
Alarm/Block lower commands because the busbar voltage is between
Umin
and
Ublock
Table 430:
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 blocks input HORIZx contains one "word"
containing 10 binary signals and 6 analog signals:
Table 431:
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
Table continues on next page
Section 14
1MRK502052-UEN B
Control
750
Technical manual
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