ABB SAM600 - Page 28

The SAM600 modules of a system are synchronized to each other always
according to IEC/IEEE 61850-9-3, which is a profile of IEEE 1588 v2 (PTP). One of
the SAM600 modules is PTP Master and all others are PTP slaves, or all of the
modules in the system are PTP slaves to an external PTP Master depending on
the configured synchronization method.
IEC/IEEE 61850-9-3 (PTP)
A SAM600 system can be synchronized to an external time master via PTP by configuring the
IEC/IEEE 61850-9-3 (PTP) time synchronization method.
IEC/IEEE 61850-9-3 time synchronization method has two modes:
• GrandMaster clock with GPS
• Master clock
In the setting
GrandMaster clock with GPS , a SAM600 system expects to receive IEC/IEEE
61850-9-3 from a time master that has GPS connection. Unavailability of a time master with
GPS connection will be indicated by SmpSync field of sampled value streams provided. An
example for a GPS synchronized SAM600 system is shown in
Figure 10.
The 1PPS output from SAM600-TS module can be used for synchronizing client devices such as
IEDs that are not directly synchronized by IEEE 1588.
Use the
GrandMaster clock with GPS setup if absolute time synchronization is
necessary, or if a SAM600 system needs to be in-sync with other sample value
sources.
GPS
GMClock
TimeMaster
SAM600
VT
SAM600
CT
SAM600
TS
IED IED IED
1PPS
1PPS
IEEE 1588
IEC18000521 V1 EN-US
Figure 10: system synchronized to GPS time master via IEC/IEEE 61850-9-3
In Master clock configuration, a SAM600 system synchronizes freely to the best time master
available (selected according to the IEEE 1588 best master clock algorithm). SmpSync field of
sampled value streams indicate the unavailability of a PTP time master connection. An example
of this configuration is shown in
Figure 11.
The 1PPS output from SAM600-TS module can be used for synchronizing client devices such as
IEDs that are not directly synchronized by IEEE 1588.
Section 2 1MRK 511 434-UEN B
SAM600 Process Bus I/O System
20 SAM600 Process Bus I/O System
Operation Manual
© Copyright 2017 ABB. All rights reserved