Omega RD-MV100 Series User Manual page 44

1.8 Other Functions
FAIL/Memory End Function (Option)
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Operation at system failure
This function activates the relay output when the CPU fails. The relay is de-energized on
CPU failure. The relay is de-energized if the CPU fails. This relay action cannot be
reversed to "energized on failure" and thus this relay is de-energized also upon power-off
(including a power failure).
• Relay behavior (de-energized on failure)
NO C NC
Normal
NO, C, and NC denote normally-opened, common, and normally closed, respectively.
Operation at memory end
This function activates the relay output when the remaining space (time) in the internal
memory or the external storage medium becomes small. The relay is energized if the
memory end is detected. The relay action cannot be reversed to "de-energized on
memory end." When the relay is energized, save the data in the internal memory to the
external storage medium during manual save, or use another external storage medium
during auto save.
The memory end detection operates as follows.
• When using auto save
When using auto save and the storage medium is inserted, the relay is energized
when the remaining space on the storage medium falls to 10%. At this point, the icon
of the external storage medium on the status display section on the screen turns to
red from green.See section 4.2.
• When using manual save
• When the type of data to be acquired is display data only or display data and event
data
When the remaining time for storing the display data in the internal memory falls to
the specified time, the relay is energized.
• When the type of data to be acquired is event data only
In the [Free] mode, the relay is energized when the remaining time for storing the
event data in the internal memory falls to the specified time.
In the [Trigger] or [Rotate] mode, the relay is not energized. (There is no alarm
output.)
• Relay behavior (energized on memory end)
NO C NC
Normal
NO, C, and NC denote normally-opened, common, and normally closed, respectively.
For the setting procedure, see section 10.6.
NO C NC
Failure
NO C NC
Memory end
NO C NC
Power-off
NO C NC
Power-off