ABB REC670 Applications Manual page 441

1MRK 511 401-UUS A
Bay control REC670 2.2 ANSI
Application manual
Setting Values (Range)
TapChgBk Alarm
(manually reset Auto Block
Auto&Man Block
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Description
If the input TCINPROG of TCMYLTC or TCLYLTC (84)
function block is connected to the tap changer
mechanism, then this blocking condition will be active if
the TCINPROG input has not reset when the
timer has timed out. The output TCERRAL will be
activated depending on the actual parameter setting. In
correct operation the TCINPROG shall appear during the
VRAISE/VLOWER output pulse and disappear before the
tTCTimeout time has elapsed.
This error condition can be reset by the input RESETERR
on TCMYLTC (84) function block, or alternatively by
changing control mode of TR1ATCC (90) or TR8ATCC
(90) function to Manual and then back to Automatic.
Section 14
Control
tTCTimeout
435