Smart Positioner
YT-3700 / 3750
Product Manual
Ver. 1.03
87
8.12.5 Diagnostic Limit Configuration (LIMT CFG)
This configuration is used to set the upper or lower limit that is generated by the Travel High Limit
Alarm, Travel Low Limit Alarm, Temperature High Limit Alarm, Temperature Low Limit Alarm, and
Deviation Timeout Alarm. Even if this condition is met, the corresponding alarm will not be triggered if
the alarm(s) is not enabled.
Upper / Lower Limit or Enable
Abbreviation [unit]
Description
Travel High Limit
TVL HI [%]
Alarm is triggered if the valve exceeds TVL HI.
The initial factory setting is 100 %.
Travel Low Limit
TVL LO [%]
Alarm is triggered if the valve moves to the
position lower than TVL LO. The initial factory
setting is 0 %.
Temperature High Limit
TEMP HI [ ]
Alarm is triggered if the internal temperature
exceeds TEMP HI. The initial factory setting is
+85
Temperature Low Limit
TEMP LO [ ]
Alarm is triggered if the internal temperature is
lower than TEMP LO. The initial factory setting
is -30
Deviation Time
dV TIME [sec]
Alarm is triggered if actual deviation greater
than
the preset “dV db” persists longer than the
preset
“dV TIME”.
The initial factory setting is 60sec and 5%.
Deviation Deadband
dV db [%]
Travel High Limit Alarm Enable
AL TVLH
These are used to set "on" or "oFF" for each
alarm. When set to oFF, the alarm does not
occur even if the conditions are met. All the
initial factory settings are oFF.
Travel Low Limit Alarm Enable
AL TVLL
Temperature High Limit Alarm
Enable
AL TMPH
Temperature Low Limit Alarm
Enable
AL TMPL
Deviation Timeout Alarm Enable
AL dVTO
3 seconds
Press <UP> or
<DOWN> button
if the above is not
displayed.
Press <UP> or
<DOWN> button
if the above is not
displayed.
<UP>/<DOWN>
<ESC>
4 times
