To receive IRIG-B there are two connectors in the IRIG-B module, one galvanic BNC
connector and one optical ST connector. IRIG-B 12x messages can be supplied via the
galvanic interface, and IRIG-B 00x messages can be supplied via either the galvanic
interface or the optical interface, where x (in 00x or 12x) means a number in the range
of 0-7.
“00” means that a base band is used, and the information can be fed into the IRIG-B
module via the BNC contact or an optical fiber. “12” means that a 1 kHz modulation
is used. In this case the information must go into the module via the BNC connector.
If the x in 00x or 12x is 4, 5, 6 or 7, the time message from IRIG-B contains
information of the year. If the x is 0, 1, 2 or 3, the information contains only the time
within the year, and year information has to be set via PCM600 or local HMI.
The IRIG-B module also takes care of IEEE1344 messages that are sent by IRIG-B
clocks, as IRIG-B previously did not have any year information. IEEE1344 is
compatible with IRIG-B and contains year information and information of the time-
zone.
20.6.4 Technical data
Table 844: Time synchronization, time tagging
Function
Value
Time tagging resolution, events and sampled measurement values 1 ms
Time tagging error with synchronization once/min (minute pulse
synchronization), events and sampled measurement values
± 1.0 ms typically
Time tagging error with SNTP synchronization, sampled measurement
values
± 1.0 ms typically
20.7 Parameter setting groups
20.7.1 Functionality
Use the six different groups of settings to optimize the IED operation for different
power system conditions. Creating and switching between fine-tuned setting sets,
either from the local HMI or configurable binary inputs, results in a highly adaptable
IED that can be applied to a variety of power system scenarios.
1MRK502052-UEN B Section 20
Basic IED functions
1115
Technical manual
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