Temperature; Switch (Discrete Input) Alarm - Siemens SITRANS LUT400 Series Operating Instructions Manual

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
Start Wizard, see page 39.)
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
2.8.7.2. High Temperature Value ON
2. Set
2.8.7.3. High Temperature Value OFF
3. Set
2.8.7.4. Assigned Relay
4. Set
The high temperature alarm will not de-activate until the temperature falls to 28 °C.
2.8.7.5. Alarm State
Use
Example: Setting a Low Temperature Alarm
To assign Relay 3 to a low level alarm that activates when the temperature falls below
-10 °C do the following:
1. Enable the Low Level Alarm (set
2.8.6.2. Low Temperature Value ON
2. Set
2.8.6.3. Low Temperature Value OFF
3. Set
2.8.6.4. Assigned Relay
4. Set
2.8.6.5. Alarm State
Use

Switch (Discrete Input) Alarm

Activates an alarm when a discrete input is in a pre-defined state.
Example: Setting a Switch Alarm
To assign Relay 3 to a switch alarm that is activated when DI 1 turns ON do the following:
1. Enable the Switch (Discrete Input) Alarm (set
2.8.3.2. Discrete Input Number
2. Set the
2.8.3.3. Discrete Input State
3. Set
2.8.3.4. Assigned Relay
4. Set
2.8.3.5. Alarm State
Use
Page 78 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS
Temperature Source
= 30
to Relay 3.
to view the current state of the High Temperature Alarm.
2.8.6.1. Enable
= -10
to Relay 3.
to view the current state of the Low Temperature Alarm.
= 1
to ON.
to Relay 3.
to view the current state of the Switch Alarm.
. (Temperature Source is set in the Quick
2.8.7. 1 . Enable
= Enabled)
= 28
= Enabled)
= - 8
2.8.3. 1 . Enable
= Enabled)
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