ABB REF 542plus, Operator'S Manual, Page: 41 / 134

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12. Setting the time and date
During commissioning, the internal time and date of the unit should be set to the
current values. There are a few differences according to the unit configuration.
Standalone unit: The internal time of the unit has to be set to the current value. To do
it, select the service menu and then the MC time submenu with the navigation
buttons.
A051351
Fig. 12.-1 Setting the time
The time is edited by using UP , DOWN and then ENTER to confirm.
The complete date and time must be inserted: year, month, day, hour, minutes and
seconds.
Unit connected to a master clock:
*
When the unit is connected via IRIG-B to a master clock, only the year can be
set. The clock typically receives its signal from a GPS and sends it to the main
module by an optical connection. The remaining part of the date and time is
received from the master clock.
*
When the unit is connected via SNTP to a master clock, a clock which typically
receives its signal from a GPS and makes it available to the main module or
Ethernet module via the Ethernet interface, the setting of the time and date form
the HMI is inhibited.
Unit connected to a SCADA system:
Multifunction Protection and Switchgear Control Unit
Operator's manual
REF 542plus REF 542plus
1MRS755869