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4.12.4. HI.OFF - Alarm due to excessive current draw
Acronym
HI.OFF
HIGH LOAD CURR THRESH OFF TIME
The parameter shows and sets the current draw value above which the Heater Break alarm trips when the control output
is OFF.
If the draw is too high it is assumed that the heating element or its supply line (eg a module SSR) is in short circuit.
Unit of measurement:
Options:
0.0...999.9
4.12.5. TIME - HB alarm trip delay
Acronym
TIME
WAITING TIME FOR ALHB TRIP
The parameter shows and sets the minimum time in which the overrun defined by LOW.ON, HIG.ON and HI.OFF must
persist before the HB alarm trips.
This parameter prevents false alarms caused by momentary positive or negative peaks in current draw.
If the value is set to "0" the alarm is immediate.
Unit of measurement:
Options:
0...999
4.12.6. THR.PE - Percentage of HB current compared to calibration
Acronym
THR.PE
PERCENTAGE HB ALARM SP IN HB CALIB
The parameter shows and sets the current draw value for the Heater Break alarm.
This value is expressed as a percentage of the current draw value set during calibration.
For more information on this calibration, see paragraph LOW.ON.
See also paragraph "4.27. Submenu US.CAL - User calibrations" on page <?>.
Unit of measurement:
Options:
0.0...100.0 (default value = 80.0)
4.12.7. OUT - Control output associated with HB alarm
Acronym
OUT
CONTROL OUTPUT HB AL
The parameter shows and sets the number of the control output associated with the alarm.
This is the output whose ON/OFF state is checked, as indicated in the description of the LOW.ON, HIG.ON and HI.OFF
parameters.
Unit of measurement:
Options:
1...4
Scrolling message
A
Scrolling message
Seconds
Scrolling message
%
Scrolling message
Number
80209C_MHW_850-1650-1850_02-2020_ENG_pag. 107
Submenu
Attributes
AL.HB
R W
Submenu
Attributes
AL.HB
R W
Submenu
Attributes
AL.HB
R W
Submenu
Attributes
AL.HB
R W
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