FANOX SIL-A A Series, Руководство пользователя

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This function allows to monitor the status of the circuit breaker and to perform preventive maintenance.
The following statuses are associated with this function:
Function Status Description
52
Startup
These are the different statuses of the circuit breaker
automatic control.
The function only is initialized on Start when the relay is switched on.
If the relay doesn’t lose power supply, the last state is maintained.
Error
Open
Opening Time
Opening Error
Closed
Closing Time
Closing Error
Configured number of Openings
Alarm Activated if the counter that measures the number of openings exceeds
the
‘ Maximum number of openings ’ setting
Configured accumulated amperes
alarm (I2t Alarm) Activated if the accumulated amps counter exceeds ‘ Maximum
Accumulated Amperes ’ setting
Configured number of openings in
a time frame alarm
Activated if the number of openings exceeds the setting in ‘ Maximum
Number of Repetitive Openings ’ during the time set in ‘ Time of Repetitive
Openings ‘ . It works like a time accumulator, to be active it needs to detect
openings within the range defined by these two settings.
Monitoring function of circuit breaker will be more difficult depending on the available circuit breaker
contacts, zero, only one (52a or 52b) or both (52a and 52b).
If no breaker contacts are used, the monitoring of the circuit breaker is made through the current
measurement. This is, if less than 0.8% of rated current is detected it is considered the breaker is open
and if more than 0.8% of rated current is available, it is considered the breaker is closed.