Woodward highprotec MRI4, User Manual

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Switchgear/Breaker – Manager
Ex ON/OFF
If the switchgear should be opened or closed by an external signal, the User can assign one signal that will trigger
the ON and one signal that will trigger the OFF command (e.g. digital inputs or output signals of the Logics) within
menu [Control
/Bkr/Ex ON/OFF Cmd]
. An OFF command has priority. ON commands are slope oriented, OFF
commands are level oriented
Synchronised Switching*
*=availability depends on ordered device type
Before a switchgear may connect two mains sections, synchronism of these sections must be assured.
In the submenu [Synchronous Switching] the parameter »Synchronism« defines which signal indicates
synchronism.
If the synchronism condition shall be evaluated by the internal Synch-Check module the signal »Sync. Ready to
Close« (release by synch-check module) has to be assigned. Alternatively a digital input or a logic output can be
assigned.
In the synchronisation mode “Generator-to-System” additionally the synchronism request has to be assigned to the
Sync-check function in the menu [Protection Para\Global Prot Para\Sync].
If a synchronism signal is assigned, the switching command will only be executed, when the synchronism signal will
become true within the maximum supervision time »
t-MaxSyncSuperv«. This supervision time will be started with
the issued ON command. If no synchronism signal has been assigned, the synchronism release is permanently.
383 MRI4 DOK-HB-MRI4-2E