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5.4.
States and Events
The state is given by real-time information generated by the relay. Some states have an event
associate with them, which is a register of a change made to the state. There are states that have
an activation event associated with them, and other states have two associated events: activation
and deactivation. These events are registered in a circular memory (buffer) with a capacity for up to
1024 events. The memory timestamp is accurate to 1 millisecond.
The events will be registered in non-volatile FRAM memory, and the events are conserved even if
the relay is not powered. The relay keeps and processes the correct date and time, even without
electrical power while the internal commissioning battery works (the lifetime of this battery is 20
years).
The events can be browsed from the HMI or by using communications. Reading the events does
not mean that they get deleted; they remain stored on the relay. To delete the events using the HMI
requires to go to the events menu and hold the
“RESET” key until the number of events reads 1,
corresponding this event to
“Events deleted”. To delete the events using communications, use the
corresponding
“delete events” option. To delete the events, it is necessary to enter a password.
Events have the following structure:
Identify
Unique event identifier: e.g.: 51_1.4 = 51 START UP
Value
ON(Activated) /OFF(Deactivated): an event is generated for activations and deactivations
Associate
measurement
Depending of the event
Date
Day/Month/Year Hour:Minutes:Seconds:Milliseconds
Summary of Contents for SIA-B Series
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