CTRLOFF
LOCREM
LOCCTRL
REMCTRL
External R/L
Switch
Off
Local
Remote
BI1
BI2
BI3
Binary
Inputs Card
Connecting
to LOCREM
function
IEC09000600-1-en.vsd
IEC09000600 V1 EN
Figure 46:
LOCREM Engineering
LOCREM function acts in OFF position, in case if more than one
binary input is at logical TRUE, or if all are at logical FALSE due to
some error in connection, or due to faulty external switch.
The indication about the position of R/L switch is available on LHMI.
.
5.4.3
Bay control
The Bay Control (QCCBAY), fulfils the bay-level functions for the apparatuses, such
as operator place selection and blockings for the complete bay.
QCCBAY gives permission to operate from two types of locations either from
Remote (for example, control center or station HMI) or from Local (local HMI on the
IED). The Local/Remote switch position can also be set to Off, which means no
operator place selected, resulting into no operation from local or remote. The
connections between LOCREM and QCCBAY functions are not visible to the
customer, they are internally connected. If LOCREM indicates that R/L switch is in
REMOTE mode the same information is available to QCCBAY and function sends
information about the Permitted Source To Operate (PSTO) to other functions
internally.
QCCBAY also provides blocking features that can be distributed to different
apparatuses within the bay. There are two different blocking alternatives:
•
Blocking of position indications
•
Blocking of commands
It is not compulsory to use the QCCBAY function in the configuration
if any of the above blocking functionality need not be activated.
When blocking of position indications is activated, the change in position (close or
open change) of the apparatus is ignored by the IED. Similarly, when blocking of
command is activated, it will not allow to perform any close or open operation on the
apparatus. The message that is displayed on the Display page when any operation is
Section 5
1MRS756800 F
Protection and control engineering
70
630 series
Engineering Manual
