DART Controls MPD CONTROL Serie Manuel D'instructions page 25

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 cease 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 53 – Alarm 1 Display Flash On Alarm
This will cause the display to fl ash when an alarm condition is active.
Parameter 54 – Alarm 1 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.
Parameter 55 – Alarm 1 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 56 – Alarm 1 Pulse Count
This setting determines how many pulses are output 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 57 – Alarm 1 Lower Limit
This setting defi nes either the lower limit, the lower end of a range for the alarm region or a stall
timeout. Alarm limits are set in display units without regard to decimal point or colon position.
In Rate and Follower 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. When the lower
limit is being used to set a stall timeout for parameter 50 mode 7, the setting is in seconds.
Parameter 58 – Alarm 1 Upper Limit
This setting defi nes either the upper limit, the upper end of a range for the alarm region or a stop
timeout. Alarm limits are set in display units without regard to decimal point or colon position.
In Rate and Follower 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. When the upper
limit is being used to set a stop timeout for parameter 50 mode 7, the setting is in seconds.
Parameter 95 – Factory Default Command
When set to a value of 5, the unit will be reset to factory default settings. This can also be
achieved by applying power to the unit with both the Enter and Down buttons depressed. The
programming jumper must be in the "On" position for this method to function.
Parameter 98 – Save to User Default Area Command
When set to a value of 5, the unit will store all adjustable parameters to the user default area.
The user default area is intended to be a location where an OEM or integrator can store settings
specifi c to their application. Using this, an OEM can easily refresh their custom settings in the
fi eld if an end-user accidentally reconfi gures the unit unsuccessfully. Another common use for
this area is testing and initial setup. The user can store known-good settings here and easily
experiment without the fear of losing the optimal confi guration.
Parameter 99 – Restore from User Default Area Command
When set to a value of 1, the unit will restore the all adjustable parameters from the user default
area. See parameter 98 for additional information.
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