227
Apparatus control
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Connections between the apparatus control modules and the synchrocheck function can
be made either for the built-in synchrocheck module or for an external synchrocheck
relay, for example, type RASC. External synchronization equipment can also be con-
nected to the apparatus control modules. Figure 108 shows the connections for a syn-
chrocheck function that checks the synchrocheck condition continuously and gives a
signal on SY_OK if there is synchronism. This is the normal application when the built-
in synchrocheck function is used.
To close the breaker via the apparatus control function, SWICON can activate the
EXE_CLOS output at the activation of the SY_OK signal when the CLOSE and EXE-
CUTE inputs are already set and also when the SEL_CLOS output is set. The input
SY_RUN is set to FIXD-ON. Figure 108 also shows an example of how to bypass the
synchrocheck function by a command from the station HMI.
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Figure 109, figure 110, and figure 111, show three alternatives of configurations for the
SWICONB module when an external synchrocheck or synchronization relay is used.
For alternative 1 in figure 109, the synchronization starts when the line and busbar volt-
ages are connected to the synchrocheck relay. For alternative 2 in figure 110, the syn-
chrocheck relay continuously checks the synchronization condition. Alternative 2 can
COMCON
CLOSE
EXECUTE
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Timer
INPUT
ON
FIXD_ON
MultCmdFunc
OUT14
SynchroCheck
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SWICONA
CLOSE
EXECUTE
SEL_CLOS
EXE_CLOS
SY_FAIL
SY_RUN
SY_OK
Bypass
synch
To Event
function block
To
output
board
en02000710.vsd
Summary of Contents for REO 517
Page 10: ... RQWHQWV ...
Page 16: ...6 Introduction to the application manual KDSWHU QWURGXFWLRQ ...
Page 64: ...54 Blocking of signals during test KDSWHU RPPRQ IXQFWLRQV ...
Page 88: ...78 Scheme communication logic ZCOM KDSWHU LQH LPSHGDQFH ...
Page 146: ...136 Unbalance protection for capacitor banks TOCC KDSWHU XUUHQW ...
Page 166: ...156 Dead line detection DLD KDSWHU 3RZHU V VWHP VXSHUYLVLRQ ...
Page 378: ...368 Monitoring of DC analog measurements KDSWHU 0RQLWRULQJ ...
Page 384: ...374 Pulse counter logic PC KDSWHU 0HWHULQJ ...
Page 412: ...402 Serial communication modules SCM KDSWHU DWD FRPPXQLFDWLRQ ...
Page 440: ...430 LED indication module KDSWHU DUGZDUH PRGXOHV ...