5. MAINTENANCE
ATTENTION:
When use the function ETD – Electronic Tag on Display, Diagnostic Explorer or Web Server
to visualize the tag of I/O points, the tag’s name will be truncated in the 24 first char-
acters right after the string “Application.” of the tag’s name. I.E. For the tag “Applica-
tion.UserPrg.MyTest.ON”, only the string “UserPrg.MytTest.ON” will be visualized on the
graphical display.
ATTENTION:
When use the function ETD - Electronic Tag on Display, Diagnostic Explorer or Web Server
to visualize the description of I/O points tag, the tag’s description will be truncated in the
first 48 characters of the description given to the tag.
ATTENTION:
When use the function ETD - Electronic Tag on Display, Diagnostic Explorer or Web Server
to visualize the module’s name, the module’s name will be truncated in the first 24 characters
of the description given to the module’s name.
ATTENTION:
The modules that make part of Nexto Jet solution haven’t the functionality ETD –Electronic
Tag on Display. This feature is exclusively for Nexto modules.
5.1.1.4.
Short press and long press
Table below indicate the times.
Press type
Minimum time
Maximum time
Indication
condi-
tion
No press
-
59.99 ms
-
Short press
60 ms
0.99 s
Pressing and releas-
ing the key within a
defined period
Long press
1 s
20 s
Pressing
for
more
than 1 second
Stuck key
20.01 s
∞
Pressing
for
more
than 20 seconds
Table 9: Diagnostic switch press times
5.2.
Preventive Maintenance
It must be checked, every year, if the interconnection cables have its connections tight, without dust deposits, mainly on
the protection devices
In environments subjected to excessive contamination, the equipment must be cleaned periodically, removing particles,
dust, etc
The varistors used for protection against transients caused by atmospheric discharges must be checked periodically, as
they might be damaged or destroyed in case the absorbed energy is above limit. In many cases, the failure may not be
clear or easily visible. In critical applications, it’s recommended the varistors periodic replacement, even the ones which
don’t present visible failures
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