ABB OMD200, Инструкция по установке и эксплуатации

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AUTOM ATIC CONTROL U N ITS , OM D20 0 A N D 3 0 0
A04154
3 s
Close Switch II
Switch I status
Alarm
Open 1 Failure
Close 2 Failure
3 s
Close Switch II
Alarm
Switch I status
Switch II status Switch II status
—
9.3
Change-over switch does not respond
During the switching sequence, the OMD_ operates the change-over switch (Switch I) first to the posi-
tion O from position I. If this transition is not completed in three seconds, the Open 1 Failure is acti-
vated. If switching to the position O is completed, but the transition (Switch II) from O to II fails, the
Close 2 Failure is activated. These alarms will lock the switching logic and can only be reset by pushing
the AUTO key.
During the back switching sequence, similiar transitions will be perfomed from II to O and from O to I,
possibly activating Open 2 Failure or Close 1 Failure.
Close Switch II
Switch I status
Switch II status
Alarm
A04153
Figure 9.1 Unsuccesful switching sequence
Figure 9.2 Succesful switching sequence
—
9.4
Missing of both lines
The missing of both lines is indicated by a blinking Power LED. In this case, the OMD_ will be in a power
saving state. If both lines are missing more than one minute, the OMD_ will shut down.
Close
Open
A04231
Close Switch II Close the switch II on LN2
(max. operating duration 3 s)
Switch I status The switch I in position I-status
Switch II status The switch II in position II-status