CHAPTER 4: SETPOINTS DEVICE
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 4–13
Example 2: More about the Function/Feature view control
The differences in the Input setpoints screens for Regular and Simplified mode are shown
below. Under Simplified mode, the Virtual Inputs and Remote Inputs are hidden for any
configuration change. However, the device will still accept and process virtual and remote
inputs based on what is configured during Regular mode. This way, Simplified
configuration mode does not change the behavior of the device.
Figure 4-8: Comparing the Inputs screens for Regular and Simplified mode
Path: Setpoints > Device > Config Mode
CONFIG MODE
Range: Simplified, Regular
Default: Regular
This setting allows selection of the configuration mode while the device is accessed by
the “Administrator” role. In Regular configuration mode, all values in settings/functions
can be edited. In Simplified configuration mode, selected settings/functions are hidden
or the values are read-only to enhance User eXperience (UX) with minimum setpoint
changes.
Real-time Clock
Path: Setpoints > Device > Real Time Clock
The 845 is capable of receiving a time reference from several time sources in addition to its
own internal clock for the purpose of time-stamping events, transient recorders and other
occurrences within the relay. The accuracy of the time stamp is based on the time
reference that is used. The 845
supports an internal clock, SNTP, IRIG-B, and PTP IEEE 1588
as potential time references.
If two or more time sources are available, the time source with the higher priority shown in
Time Sources table is used where 1 is considered to be the highest priority. Please note
that the time source priority of PTP and IRIG-B can be swapped. If both PTP and IRIG-B are
available to the 845, by default the 845
clock syncs to PTP over IRIG-B. If PTP is not
available the 845
CPU syncs the internal clock to IRIG-B.
..\Setpoints\Inputs
Item Name
Contact Inputs
Virtual Inputs
Analog Inputs
Remote Inputs
Inputs V Inputs MA In Rem In
..\Setpoints\Inputs
Item Name
Contact Inputs
Analog Inputs
Inputs MA In
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