Signal Collection And Delay Logic - ABB RELION 611 Series Technical Manual

1MRS757454 D
8.2.4.1
611 series
Technical Manual
setting has three parameter values: "On", "External Ctl" and "Off". The setting value
"On" enables the reclosing operation and "Off" disables it. When the setting value
"External Ctl" is selected, the reclosing operation is controlled with the RECL_ON
input. AR_ON is activated when reclosing operation is enabled.
The operation of DARREC can be described using a module diagram. All the modules
in the diagram are explained in the next sections.
A070864 V3 EN
Figure 193: Functional module diagram

Signal collection and delay logic

When the protection trips, the initiation of autoreclosing shots is in most applications
executed with the INIT_1...6 inputs. The DEL_INIT2...4 inputs are not used.
In some countries, starting the protection stage is also used for the shot initiation. This
is the only time when the DEL_INIT inputs are used.
Section 8
Control functions
407