Siemens SITRANS LUT400 - Elapsed Time Relay (2.11.1.)

SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
213
9.2.11.1 Elapsed Time Relay (2.11.1.)
This function drives a relay based on an interval and duration of time. The relay toggles on
and off at a rate set by the parameters below. (This relay is not affected by LOE, faults,
alarms, or any other condition within the device.)
Enable (2.11.1.1.)
Enables/disables elapsed time relay control.
Options
ENABLED
*
DISABLED
Interval (2.11.1.2.)
The interval in minutes from the activation of the relay until the next activation.
Values
Range: 0.1 to 99999
1
Default: 60.0
1)
Fractional values are allowed, such as 0.5 for 30 seconds
This value must be greater than the Relay Duration (2.11.1.3.) (Page 213) 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
Range: 1 to 99999
Default: 10
This value must be less than the Interval (2.11.1.2.) (Page 213) or the relay will never reset.
Assigned Relay (2.11.1.4.)
Determines the relay assigned to elapsed time control.
Options
*
RELAY 1
RELAY 2
RELAY 3
Relay Logic (2.11.1.5.)
Use to change the behaviour of the relay assigned to elapsed time control.
Options
*
NORMALLY OPEN
NORMALLY CLOSED