DART Controls DM8000 CONTROL SERIES Instruction Manual page 18

Parameter 40 & 50 – Alarm 1 & 2 Conditions
This defi nes which conditions will result in the alarm 1 or alarm 2 outputs being activated.
Mode 0: Always Inactive
The alarm output will remain in an inactive state. In this state, the NC and C contacts
will be internally electrically connected.
Mode 1: Always Active (When Power Is Applied)
The alarm output will become active when the power is applied to the unit. In this
state, the NO and C contacts will be internally electrically connected.
Mode 2: Active When Signal Input 1 (S1) Display Value Above Limit
The alarm output will activate when the displayed value is above the upper limit settings,
parameters 48 and 58 accordingly.
Mode 3: Active When Signal Input 1 (S1) Display Value Below Limit
The alarm output will activate when the displayed value is below the lower limit settings,
parameters 47 and 57 accordingly.
Mode 4: Active When Signal Input 1 (S1) Display Value Inside Range
The alarm output will activate when the displayed value is greater than or equal to
lower limit settings and less than or equal to the upper limit setting.
Mode 5: Active When Signal Input 1 (S1) Display Value Outside Range
The alarm output will activate when the displayed value is less than the lower limit
setting or greater than upper limit setting.
Mode 6: Active When Signal Input 2 (S2) Value Above Limit
The alarm output will activate when the displayed value is above the upper limit settings,
parameters 48 and 58 accordingly.
Mode 7: Active When Signal Input 2 (S2) Value Below Limit
The alarm output will activate when the displayed value is below the lower limit settings,
parameters 47 and 57 accordingly.
Mode 8: Active When Signal Input 2 (S2) Value Inside Range
The alarm output will activate when the displayed value is greater than or equal to
lower limit settings and less than or equal to the upper limit setting.
Mode 9: Active When Signal Input 2 (S2) Value Outside Range
The alarm output will activate when the displayed value is less than the lower limit
setting or greater than upper limit setting.
Parameter 41 & 51 – Alarm 1 & 2 Output Style & Reset Confi guration
This setting confi gures the output mode and reset method for the alarm outputs.
Mode 1: Constant & Auto Reset
In this mode, the alarm output will remain active until the alarm condition ceases to
exist. The alarm will automatically reset when the conditions return to normal.
Mode 2: Constant & Manual Reset
In this mode, the alarm output will remain active until the alarm is reset manually. See
parameters 42 and 52 for details.
Mode 3: Pulse & Auto Reset
In this mode, the alarm output will pulse on and off until the alarm condition ceases
to exist. The pulsed modes are commonly used for audible alarms where a constant
output would be considered distracting or awkward. The alarm will automatically reset
when the conditions return to normal.
Mode 4: Pulse & Manual Reset
In this mode, the alarm output will pulse on and off until the alarm is reset manually.
See parameters 42 and 52 for reset details. The pulsed modes are commonly used for
audible alarms where a constant output would be considered distracting or awkward.
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