Line Clock Synchronisation - Siemens SWT-3000 Equipment Manual

SWT 3000 Equipment Manual

Line clock synchronisation

It is also possible to synchronize the clock through one of the devices via the connecting route
(line sync. mode <off>, <Master>, <Slave>). The device that is to perform the synchronization is
designated as the "master" and the device to be synchronized as the "slave"
is only necessary to synchronize one device (the master) externally
The line synchronization is performed once a day at 24:00 resp. at the time defined with <Line
sync. hour> (available from PowerSys versions ≥ P3.2.216). by transmitting the synchronizing tone
(fs). The difference in time between master and slave must not be greater than ± 30 sec otherwise
clock synchronization is not possible. The maximum difference in the time between master and
slave is thus the signal run time.
Select <Line synch.> <off> for both devices if both devices are provided with external synchroniz-
ing pulses . In this case synchronization between the devices is not implemented.
Figure 37:
© SIEMENS AG 2008
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Possibilities for the clock synchronisation
Edition p3_3_2x 08/09
Installation and Commissioning
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