Table of Contents
Advertisement
Single command (CD)
6LQJOH FRPPDQG &'
$SSOLFDWLRQ
The terminals may be provided with a function to receive signals either from a substa-
tion automation system or from the local human-machine interface, HMI. That receiv-
ing function block has outputs that can be used, for example, to control high voltage
apparatuses in switchyards. For local control functions, the local HMI can also be used.
Together with the configuration logic circuits, the user can govern pulses or steady out-
put signals for control purposes within the terminal or via binary outputs.
Figure 78 shows an application example of how the user can, in an easy way, connect
the command function via the configuration logic circuit to control a high-voltage ap-
paratus. This type of command control is normally performed by a pulse via the binary
outputs of the terminal. Figure 78 shows a close operation, but an open operation is per-
formed in a corresponding way without the synchro-check condition.
Single
command
function
CDxx
SingleCmdFunc
Close CB1
CmdOuty
2
MODE
)LJXUH $SSOLFDWLRQ H[DPSOH VKRZLQJ D ORJLF GLDJUDP IRU FRQWURO RI D FLUFXLW
EUHDNHU YLD FRQILJXUDWLRQ ORJLF FLUFXLWV
Figure 79 and figure 80 show other ways to control functions, which require steady On/
Off signals. The output can be used to control built-in functions or external equipment.
Configuration logic circuits
OUTy
User-
defined
conditions
Synchro-
check
&KDSWHU
&RQWURO
200 ms
&
99000422.vsd
181
Advertisement
Table of Contents
