80209C_MHW_850-1650-1850_02-2020_ENG_pag. 103
4.11.8. LATCH - Memorizing the alarm
Acronym Scrolling message Submenu Attributes
LATCH ALARM.1 (or ALARM.2…ALARM.4) MEMORY DEFINITION ALARM R W
The parameter shows and sets enabling of memorization of the alarm being configured.
Memorization maintains the active alarm state even after the alarm conditions are eliminated.
The alarm state can be deleted by from the digital input, serial input, or key.
Unit of measurement: -
Options: OFF = Alarm not latched
On = Alarm latched
4.11.9. HYSTE - Hysteresis
Acronym Scrolling message Submenu Attributes
HYSTE ALARM.1 (or ALARM.2…ALARM.4) HYSTERESIS ALARM R W
The parameter shows and sets the hysteresis applied to the alarm setpoint value for the alarm being configured.
Unit of measurement: Scale points
Options: 0...999 = For absolute (A.r.x = ABSLT) and symmetrical alarm (n.S.x = SYMMT)
-999...999 = For other types of alarms
4.11.10. DELAY - Alarm trip delay
Acronym Scrolling message Submenu Attributes
DELAY ALARM.1 (or ALARM.2…ALARM.4) DELAY OF ACTIVATION ALARM R W
The parameter shows and sets the alarm trip delay for the alarm being configured, i.e., the time that the value of the process
variable has to exceed the alarm setpoint for the alarm to trip.
This parameter prevents repeated alarms due to instantaneous and insignificant exceeding of that value.
If the parameter is set to “0.00” the alarm will be instantaneous, regardless of the time in which the process variable exce-
eds the alarm setpoint.
For a detailed explanation of this behavior, see paragraph “5.6.1. AL1...AL4 Generic alarms” on page <?>.
Unit of measurement: Minutes.seconds
Options: 0.00...99.59
4.11.11. MSG.AL - Message associated with tripping of alarm
Acronym Scrolling message Submenu Attributes
MSG.AL ALARM.1 (or ALARM.2…ALARM.4) SCROLLING MESSAGE AT ALARM ACT ALARM R W
The parameter shows and sets the number of the message associated with tripping of the alarm being configured, i.e.,
the scrolling message shown on the display.
For more information on scrolling messages, see paragraph “3.1.2.2. Scrolling messages” on page <?>.
If the parameter is set to “0” no message will be displayed when the alarm trips.
The same message number can be assigned to different alarms
Unit of measurement: Message number
Options: 0...25 (with LAnG=LANG1 or LANG2 or LANG3)
0…75 (with LAnG=NONE)
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