DART Controls DM8000 CONTROL SERIES Instruction Manual page 19

Parameter 42 & 52 – Alarm 1 & 2 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.
Mode 3: No Silencing, Reset On S2 Input Low (Wired To Common)
Similar to Mode 1. Once the alarm condition ceases to exist, setting the S2 input to a
low (COM) state or wiring it to common will cause a manual reset.
Mode 4: Silencing Enabled, Reset On Any Button Press
When the conditions for an active alarm persist, pressing any user-interface button will
result in the alarm being silenced or deactivated, but not reset. A second attempt to reset
the alarm must be made after the condition ceases to exist to clear the alarm.
Mode 5: Silencing Enabled, Reset On S2 Input High (Not Wired To Common)
Similar to Mode 4. Setting the S2 input to a high (+5V) state or allowing it to fl oat
disconnected will cause the alarm to be silenced or reset depending on the current state
of the alarm conditions.
Mode 6: Silencing Enabled, Reset On S2 Input Low (Wired To Common)
Similar to Mode 4. Setting the S2 input to a low (COM) state or wiring it to common
will cause the alarm to be silenced or reset depending on the current state of the alarm
conditions.
Parameter 43 & 53 – Alarm 1 & 2 Display Flash On Alarm
This will cause the display to fl ash when an alarm condition is active. If the unit is in Dual Rate
or Time modes, the display will only fl ash on the display that has the alarm. Example, if you
have the alarm sounding on S2 and you are looking at S1 speed, the display will not fl ash until
you look at S2. If the alarm is set for Always Active the display will not fl ash, but the output
relay will be activated.
Parameter 44 & 54 – Alarm 1 & 2 Pulse on Time
This parameter defi nes the number of seconds the output should be enabled during the 'on'
phase of an active pulsing alarm's output. See application samples for examples.
Parameter 45 & 55 – Alarm 1 & 2 Pulse off Time
This parameter defi nes the number of seconds the output should be disabled during the 'off'
phase of an active pulsing alarm's output.
Parameter 46 & 56 – Alarm 1 & 2 Pulse Count
This setting determines how many pulses are outputted when the alarm is activated and is
confi gured in pulse output style. When 0 is entered, the unit will be set for continuous pulses
while the alarm is active.
Parameter 47 & 57 – Alarm 1 & 2 Lower Limit
This setting defi nes either the lower limit or lower end of a range for the alarm region. Alarm
limits are set in display units without regard to decimal point or colon position. In Rate and
Counter Modes, a limit of 123 could represent a display value of 123, 12.3, 1.23, or 0.123.
When in Time Mode, a limit of 123 would represent 1:23 on the display.
Parameter 48 & 58 – Alarm 1 & 2 Upper Limit
This setting defi nes either the upper limit or upper end of a range for the alarm region. Alarm
limits are set in display units without regard to decimal point or colon position. In Rate and
Counter Modes, a limit of 123 could represent a display value of 123, 12.3, 1.23, or 0.123.
When in Time Mode, a limit of 123 would represent 1:23 on the display.
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