ABB RELION REX640 Technical Manual page 1514

Section 9
Control functions
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GUID-A48E8D57-1435-4681-A440-88978E4106E1 V1 EN
Figure 790: 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 start signal has four time delays. The time
delay is selected based on the shot pointer in the AR function. For the first reclose
attempt, the first time delay is selected; for the second attempt, the second time delay
and so on. For the fourth and fifth attempts, the time delays are the same.
Time delay settings for the DEL_INIT_2 signal
• Str 2 delay shot 1
• Str 2 delay shot 2
• Str 2 delay shot 3
• Str 2 delay shot 4
Time delay settings for the DEL_INIT_3 signal
1MRS759142 C
REX640
Technical Manual