Reference: A938
Index: B
Page 26
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Instruction Manual – NPS914 Alarm and Indication IED
Figure. 3.4. - 25. Device I/O matrix subsection.
Through the Device I/O matrix subsection you can connect digital inputs, logical outputs, protection stage
status signals (START, TRIP, BLOCKED, etc.), object status signals and many other binary signals to output
relays, or to LEDs configured by the used. A connection can be latched ("|x|") or non- latched ("x"). Please
note that a non-latched output is deactivated immediately when the triggering signal is disabled, while a
latched signal stays active until the triggering signal deactivates and the latched function is manually
cleared.
You can clear latched signals by entering the mimic display and the pressing the Back button on the panel.
Figure. 3.4. - 26. Programmable control switch subsection.
Programmable control switches (PCSs) are switches that can be used to control signals while in the mimic
view. These signals can be used in a variety of situations, such as for controlling the logic program, for
function blocking, etc. You can name each switch and set the access level to determine who can control the
switch.
