Berthold castxpert LB 452, Руководство по эксплуатации

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c
7 "Channel Overview" Menu
b
Rev. 04, 03/2015
97
7.2.3 Alarms
Note
The submenu "Alarms" is only displayed if an extension module is
installed.
In the "Channel Overview" menu click on Settings | Alarms (Fig. 54).
Fig. 62 "Channel Overview" Menu, Settings - Alarms
In the "Alarms" submenu, you can change the values for the fill level alarms (max.
and min.) and the hysteresis of these. These values are required for the alarm relays
on the extension module.
Hysteresis
Hysteresis is defined as the tolerance range of the alarm trigger which occurs at a
predefined threshold of the fill level (e.g.: 20% and 85%).

In the event of a rising fill level, the high alarm is triggered when a fill
level of (here) 85% is exceeded. If the fill level falls again, then the alarm
does not switch off again until the fill level falls below (here) 85% - 5% =
80%.

In the event of a falling fill level, the low alarm is triggered when the fill
level falls below (here) 20%. If the fill level rises again, then the alarm does
not switch off again until the fill level exceeds (here) 20% + 5% = 25%.