Spa Communication Parameters - ABB SPA-ZC 402 Installation And Commissioning Manual

1MRS755380
6.7.1.
SPA/ Ethernet Adapter
SPA to IEC 61850 Gateway
Installation and Commissioning Manual
If both SNTP servers are offline, the event time stamps have the status:
ClockNotSynchronized. If at least one SNTP server is online, but the server's
clock is not synchronized, the event time stamps have the status: ClockFailure. In
additon, when a time synchronization message is not received during the startup,
the time stamping starts at 00:00:00 01.01.1970. The time is requested from the
SNTP server every 60 seconds.
Time Zone Correction
*
Due to the SNTP time synchronization, a time offset must be added to the SPA
time synchronization message depending on the time zone. It affects the IED
HMI event list. The value (in minutes) is between - 720 and 780 and it is
comparable to Coordinated Universal Time (UTC).
OSI addresses are read-only and they are always the same. The IEC 61850 client
*
uses these addresses to access SPA-ZC 402 over MMS.
An established IEC61850 connection uses the TCP keepalive functionality, if there
is no other active communication ongoing. TCP keepalive is sent every 15 seconds.
If the peer is not responding, it is considered to be time-outed and the TCP
connection is closed.
Fig. 6.7.-1 General communication parameters

SPA Communication parameters

SPA Address
*
SPA-ZC 402 needs also an IED SPA address to access the SPA data. Every
logical device has SPA Communication Parameters Object properties except
LD0, which describes the SPA-ZC 402. The SPA address object property has to
be the same as the configured SPA unit number in IED.
SPA Password
*
SPA password is used for commands and it has to be the same as the defined
password in the IED. The password can be modified in the IED side with HMI or
a specific tool.
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