Signal Collection And Delay Logic - ABB 615 series Technical Manual

Section 9
Control functions
9.4.4.1
996

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, pickup of the protection stage is also used for the shot initiation. This is
the only time when the DEL_INIT inputs are used.
A070865 V2 EN
Figure 505: Schematic diagram of delayed initiation input signals
In total, the AR function contains six separate initiation lines used for the initiation or
blocking of the autoreclosing shots. These lines are divided into two types of channels. In
three of these channels, the signal to the AR function can be delayed, whereas the other
three channels do not have any delaying capability.
Each channel that is capable of delaying a pickup signal has four time delays. The time
delay is selected based on the shot pointer in the AR function. For the first reclose attempt,
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