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Inputs & Outputs Status Monitoring Menu
Input & Output Status Monitoring Menu
displays the
momentary status of the following contacts:
7 programmable inputs (top picture),
6 programmable outputs (bottom picture),
Watchdog (W) relay (bottom picture), and
Trip (T) relay (bottom picture).
The menu comprises two sub-menus, which are studied
below.
Input Status
When Input & Output Status Monitoring Menu is
accessed, the first two lines below the title display the
input status. The first line shows the input no. while the
second line gives the status of the inputs as “1”s and
“0”s. When an input is inactive, the related monitoring
cell on the status line displays “0”, or, vice versa, when
the input is active, “1” is displayed to show the status
of the related input. E.g., the sample input status
monitoring screen on the picture to the top displays
that all inputs are inactive.
Outputs Status
Outputs status examination is done the same way done for inputs. As seen on the picture, 3
rd
line of
the screen displays the titles for the monitored outputs; 6 programmable outputs, the watchdog relay
and the trip relay. The 4
th
line on the screen displays the status of the outputs as “1”s and “0”s,
identical to inputs screen. When the outputs are passive, relevant monitoring cells on the status line
displays “0”, while “1” is displayed for outputs that are active. This rule counts also for SPDT (single
pole / double throw) relays, which are: programmable relays 1&2, the trip relay and the watchdog
relay.
NOTE
Note that the watchdog relay has a unique activation behavior. Unlike the other outputs, the
watchdog relay closes by default when CPM 310 G is in service. This results from the nature of the
relay - the watchdog relay opens contacts only when there is an auxiliary supply shortage or internal
error. Because of the mentioned functionality characteristics, the watchdog relay (W) is always
monitored as “1”. □
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