DART Controls DP4 CONTROL Serie Manual De Instrucciones página 17

Parameter 40 – Alarm 1 Conditions
This defi nes which conditions will result in the alarm 1 output 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 Display Value Above Limit
The alarm output will activate when the displayed value is above the upper limit setting,
parameter 48.
Mode 3: Active When Display Value Below Limit
The alarm output will activate when the displayed value is below the lower limit setting,
parameter 47.
Mode 4: Active When 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 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 Display Value Results in a Zero or Equivalent Output
If the display is set to a value that produces a zero output or is within the programmed
deadband, then the alarm is activated.
Mode 7: Relay Direction Control Mode
In this mode, the relay output will determine which direction is being requested. This will
typically be used with Item 10 modes 9 & 10.
Forward = relay not energized; Reverse = relay energized
Parameter 41 – Alarm 1 Output Style & Reset Confi guration
This setting confi gures the output mode and reset method for the alarm output.
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
parameter 42 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
parameter 42 for reset details. The pulsed modes are commonly used for audible alarms
where a constant output would be considered distracting or awkward.
Parameter 42 – Alarm 1 Reset Confi guration
This setting determines which actions will cause an active alarm to be silenced or reset.
Mode 1: No Silencing, Reset On Any Button Press
In this mode, an active alarm cannot be silenced. Once the alarm condition ceases to
exist, however, any user-interface button may be pressed to cause a manual reset.
Mode 2: No Silencing, Reset On S2 Input High (Not Wired To Common)
Similar to Mode 1. Once the alarm condition ceases to exist, setting the S2 input to a
high (+5V) state or allowing it to fl oat disconnected will cause a manual reset.
15