PU3 Module SWT 3000 Equipment Manual
Page - 12 Edition p3_3_2x 08/09 © SIEMENS AG 2008
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“
d. This means that it
is only necessary to synchronize one device (the master) externally
c.
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
e. In this case synchronization between the devices is not implemented.
A
L
R
S
A
L
R
S
A
L
R
S
A
L
R
S
ext. sync
ext. sync
ext. sync
fs 18:00
(i)SWT 3000 (i)SWT 3000
(i)SWT 3000 (i)SWT 3000
Figure 8: Possibilities for the clock synchronisation
c
d
e
To Next Page
Loading...
Need help?
General
