ABB ATS022, Installation And Operating Instructions Manual

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Installation and operating instructions, ATS022
1SDH000760R0002, L4106
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Figure 3.4 Logic operation when opening command is OK
Closing Command
During the switching sequence ATS022 sends the closing command to the protection device on
emergency line. If this is not effectively closed in fi ve seconds, the “Close 2 Failure” alarm is activated
and the Alarm LED will be switched ON. This alarm will lock the switching logic and can only be reset by
pushing RESET key.
3. Description
Figure 3.5 Logic operation when closing command fails
KA00394
5 s
CB2 status
Alarm
Closing CB2
KA00390
Under 5 s
CB1 status
Alarm
Opening CB1
Figure 3.3 Logic operation when opening command fails
KA00389
5 s
CB1 status
Alarm
Opening CB1
b) Protection devices do not respond
Opening Command
During the switching sequence, the ATS022 sends the opening command to the protection device on
the normal line. If this is not effectively opened in fi ve seconds, the “Open 1 Failure” alarm is activated
and the Alarm LED will be switched ON. This alarm will lock the switching logic and can only be reset by
pushing the RESET key.