Siemens SITRANS LUT400 - Switch (Discrete Input) Alarm; Fail-Safe Fault Alarm

General Operation
7.6 Alarms
SITRANS LUT400
102 Operating Instructions, 07/2019, A5E33329501-AC
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 Temperature Alarm (set Enable (2.8.6.1.) (Page 201
) = Enabled)
2. Set Low Temperature Value ON (2.8.6.2.) (Page 202) = -10
3. Set Low Temperature Value OFF (2.8.6.3.) (Page 202) = -8
4. Set Assigned Relay (2.8.6.4.) (Page 202) to Relay 3.
Use Alarm State (2.8.6.5.) (Page 202) to view the current state of the Low Temperature
Alarm.
7.6.5 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 Enable (2.8.3.1.) (Page 198
) = Enabled)
2. Set the Discrete Input Number (2.8.3.2.) (Page 198) = 1
3. Set Discrete Input State (2.8.3.3.) (Page 199) to ON.
4. Set Assigned Relay (2.8.3.4.) (Page 199) to Relay 3.
Use Alarm State (2.8.3.5.) (Page 199) to view the current state of the Switch Alarm.
7.6.6 Fail-safe Fault Alarm
Activates an alarm when a fault that has caused a fail-safe condition is present.
Example: Setting a Fail-safe Fault Alarm
To assign a fail-safe fault alarm to Relay 3 do the following:
1. Enable the Fail-safe Fault Alarm (set Enable (2.8.8.1.) (Page 204
) = Enabled)
2. Set Assigned Relay (2.8.8.2.) (Page 204) to Relay 3.
Use Alarm State (2.8.8.3.) (Page 204) to view the current state of the Fail-safe Alarm.