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Siemens SITRANS L 7ML5400 Operating Instructions Manual page 217

Ultrasonic level controllers
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Enable (2.11.1.1.)
Enables/disables elapsed time relay control.
Options
Interval (2.11.1.2.)
The interval in minutes from the activation of the relay until the next activation.
Values
Fractional values are allowed, such as 0.5 for 30 seconds
1)
This value must be greater than the Relay Duration (2.11.1.3.) (Page 217) or the relay will
never reset. The first activation occurs when the device is powered on.
Relay Duration (2.11.1.3.)
The time in seconds from one change of state in the relay to the next.
Values
This value must be less than the Interval (2.11.1.2.) (Page 217) or the relay will never reset.
Assigned Relay (2.11.1.4.)
Determines the relay assigned to elapsed time control.
Options
Relay Logic (2.11.1.5.)
Use to change the behaviour of the relay assigned to elapsed time control.
Options
Relay contact operation is NORMALLY CLOSED for alarms and NORMALLY OPEN for controls.
By default a control contact is Normally Open. For Relay Duration (2.11.1.3.) (Page 217) the
corresponding relay coil is energized. By setting this parameter to Normally Closed, the relay
coil will be de-energized for the duration phase.
SITRANS LUT400
Operating Instructions, 04/2021, A5E33329501-AG
*
Range: 0.1 to 99999
Default: 60.0
Range: 1 to 99999
Default: 10
*
*
Parameter reference (LUI)
9.2 Setup (2.)
ENABLED
DISABLED
1
RELAY 1
RELAY 2
RELAY 3
NORMALLY OPEN
NORMALLY CLOSED
217

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