ABB RED650, Technical Manual

Page: 374 / 926

The timer tSelect is used for supervising the time between the select and the
execute command signal, that is, the time the operator has to perform the command
execution after the selection of the object to operate.
select
tSelect
timer
execute command
t1
t1>tSelect, then long-
operation-time in 'cause'
is set
en05000092.vsd
IEC05000092 V1 EN-US
Figure 174: tSelect
The Long-operation-time cause is only given on the output
L_CAUSE. It is not sent on protocols since the selection has
already received a positive response, and no operation has been
issued. If an operation is issued after the time out, the negative
response is Object-not-selected.
The parameter tResResponse is used to set the maximum allowed time to make the
reservation, that is, the time between reservation request and the feedback
reservation granted from all bays involved in the reservation function.
select
tResResponse
timer
reservation granted RES_GRT
t1>tResResponse, then 1-
of-n-control in 'cause' is
set
t1
reservation request RES_RQ
IEC05000093-2-en.vsd
IEC05000093 V2 EN-US
Figure 175: tResResponse
The timer tExecutionFB supervises the time between the execute command and the
command termination, see Figure 176 .
Section 12
1MRK 505 394-UEN A
Control
368 Line differential protection RED650 2.2 IEC
Technical manual