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MCT-MC
4.3
Configuring the MCT-MC
- 33 -
FDC MCT-MC
Latching alarm action
will keep the alarm output on even if the alarm condition has cleared until the alarm is
reset by the user. The output state is inverted for a reverse alarm output.
Hold alarm action
prevents the alarm from activating on power up even when an alarm condition is present.
The alarm will be blocked until the alarm condition clears. Once cleared, the alarm will then operate normally
and activate when an alarm condition occurs.
The
Latching and hold alarm action
combines both the latching and hold alarm actions listed above.
4.3.26 Alarm (1-3) Indication
The Alarm 1, 2 and 3 Indication settings are used to select whether the alarm will be shown in the MC runtime
application or be hidden from the user. This allows the OEM to configure an alarm to perform a specific control
function while preventing the user from adjusting the set point or seeing the activation state of the alarm.
When the alarm indication is set for
Hide alarm status/settings
, the alarm will be removed from the MC runtime
application. The user will not be able to edit the alarm message or adjust the alarm set point. When the alarm
activates, there will be no indication or message on the alarm screen and the audible alarm will not sound. The
alarm operates as a “silent” alarm with no indication to the user.
When the alarm indication is set for
Show alarm status/settings
, the user will be able to access and change
the alarm set point and alarm message under the device settings. When the alarm occurs, the alarm message
will be displayed on the Alarm screen and the audible alarm will sound.
The indication selections are mutually exclusive, i.e., selecting one will turn off the other. Once the desired
alarm indication has been selected, press the “Done” button to set the alarm operation and return to the main
Loop Configuration screen.
NOTE:
If the alarm is hidden but its mode is set for latching, the user will not have any indication that the
alarm requires manual reset. When an alarm is hidden, it is recommended that the normal or hold
mode be used so that the alarm output automatically resets when the alarm condition is no longer
present.
4.3.27 Alarm (1-3) Setpoint
The alarm set points can be set when the alarm function is set for a process or deviation type of alarm. If the
alarm indication is set to “show” the alarm status and settings, the set point will also be available in the MC
runtime application. If the alarm indication is set for “hide” alarm status and settings, the alarm set point will not
be available in the MC runtime application and can only be changed in the Configurator.
Содержание MCT-MC 4.3
Страница 1: ...MCT MC 4 3 User Manual MCT MC 4 3 User Manual Rev A February 2018...
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