Alarms view parameters
The
Alarms
view includes these parameters:
TIP:
The parameters cannot be edited when there is a transition to Run mode.
Parameter | Description |
|---|---|
Disable All Alarms | Select the checkbox to disable the alarms. Disabling alarms prevents the device from generating any of the four process alarms (LL, L, H, and HH) or the rate alarm and does not allow access to any of the alarm configuration properties. |
Latch Process Alarms | Select the checkbox to maintain an alarm-triggered condition for any of the process alarms, even after the condition ceases. If online with the controller, to unlatch the process alarms individually, select their corresponding Unlatch . Or to unlatch all process alarms simultaneously, select Unlatch All .IMPORTANT: Unlatch All also unlatches the rate alarm. |
High High Limit | Sets the level of input to a channel that causes the device to trigger the High High alarm. The alarm remains active until the input returns below this level unless it is within the deadband, or as long as the alarm is latched. |
High Limit | Sets the level of input to a channel that causes the device to trigger the High alarm. The alarm remains active until the input returns below this level unless it is within the deadband or as long as the alarm is latched. |
Low Limit | Sets the level of input on a channel that causes the device to trigger the Low alarm. The alarm remains active until the input returns above this level unless it is within the deadband or as long as the alarm is latched. |
Low Low Limit | Sets the level of input to a channel that causes the device to trigger a Low Low alarm. The alarm remains active until the input returns above this level unless it is within the deadband or as long as the alarm is latched. |
Deadband | Specifies the deadband value to use with the process alarms. The deadband allows the process alarm status bits to remain set, even if the alarm condition disappears, as long as the channel data remains within plus or minus the deadband value of the process alarm. This Deadband value is entered in engineering units. |
Enable Rate Alarm Latching | Select the checkbox to instruct the device to latch the rate limit once it has been triggered, even if the condition causing the alarm to occur disappears. If online with the controller, unlatch the rate alarm by selecting the corresponding Unlatch , or by selecting Unlatch All .IMPORTANT: Unlatch All also unlatches the process alarms. |
Rate Alarm Limit | The value at which the rate alarm triggers. The rate alarm triggers if the rate of change between input samples for each channel exceeds this value for that channel. Rate Alarm Limit is entered in engineering units per second or percentages per second based on the scaling values. |
Unlatch All | Unlatch all alarms for the channel. |
Unlatch | Unlatches the adjacent alarm condition. |
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