Siemens SITRANS LUT400 Operating Instructions Manual page 195

Pump Run-On
Available only on LUT430 (Pump and Flow model) and LUT440 (OCM model).
For details on relay behaviour under fail-safe conditions, see Pump relays (Page 88).
Enable (2.7.2.3.1.)
Enables/disables Pump Run-0n.
Options
Run-On Interval (2.7.2.3.2.)
The number of hours between pump run-on occurrences.
Values
To clear sediment in a pump-down wet well, run the pump after the normal OFF setpoint is
reached to force some solid material through. This parameter sets the time between such
events. Only the last pump running can run-on.
Run-On Duration Pump 1 (2.7.2.3.3.)
The number of seconds that the pump will run-on.
Values
Each pump capacity will determine the amount of material that can be removed. Choose a
value long enough to clean out the vessel bottom, yet short enough not to run the pump dry.
Also be sure that this value does not overlap with Run-On Interval (2.7.2.3.2.) (Page 193).
Run-On Duration Pump 2 (2.7.2.3.4.)
The number of seconds that the pump will run-on.
Values
Each pump capacity will determine the amount of material that can be removed. Choose a
value long enough to clean out the vessel bottom, yet short enough not to run the pump dry.
Also be sure that this value does not overlap with Run-On Interval (2.7.2.3.2.) (Page 193).
Pump Start Delays
Available only on LUT430 (Pump and Flow model), and LUT440 (OCM model).
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
*
Range: 0.00 to 1000.00
Default: 0.00
Range: 0 to 65535
Default: 0
Range: 0 to 65535
Default: 0
ENABLED
DISABLED
193