General Operation
7.6 Alarms
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
101
7.6.3.2 Example: Setting an Out-of-bounds Level Alarm
To assign Relay 3 to an out-of-bounds level alarm do the following:
1. Enable the Out-of-bounds Level Alarm (set Enable (2.8.5.1.) (Page 200
) = Enabled)
2. Set High Level Value (2.8.5.2.) (Page 201) = 1.30 m
3. Set Low Level Value (2.8.5.3.) (Page 201) = 0.30 m
4. Set Assigned Relay (2.8.5.4.) (Page 201
) to Relay 3.
Results:
● Activates alarm assigned to relay 3 when level is outside range 0.3 to 1.3 m
● Resets alarm below 1.3 m or below 0.3 m
Use Alarm State (2.8.5.5.) (Page 201) to view the current state of the Out-of-bounds Level
Alarm.
7.6.4 Temperature
Activates an alarm when the process temperature reaches a certain value (Low Temperature
Value ON for Low Temperature Alarm or High Temperature Value ON for a High
Temperature Alarm).
The temperature source can be the temperature sensor built into the transducer or an
external TS-3, as set by Temperature Source. (Temperature Source is set in the Quick Start
(Page 59).)
Example: Setting a High Temperature Alarm
To assign Relay 3 to a high temperature alarm that activates when the temperature goes
above 30 °C do the following:
1. Enable the High Temperature Alarm (set Enable (2.8.7.1.) (Page 203
) = Enabled)
2. Set High Temperature Value ON (2.8.7.2.) (Page 203) = 30
3. Set High Temperature Value OFF (2.8.7.3.) (Page 203) = 28
4. Set Assigned Relay (2.8.7.4.) (Page 203) to Relay 3.
The high temperature alarm will not de-activate until the temperature falls to 28 °C.
Use Alarm State (2.8.7.5.) (Page 203) to view the current state of the High Temperature
Alarm.
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