Siemens SITRANS LUT400 Series Operating Instructions Manual page 472

2.7.2.3.
Available only on LUT430 (Pump and Flow model) and LUT440 (OCM
model).
For details on relay behaviour under fail-safe conditions, see Pump relays
on page 66.
2.7.2.3.1.
2.7.2.3.2.
2.7.2.3.3.
2.7.2.3.4.
A5E33329501 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS
Pump Run-On
Enable
Enables/disables Pump Run-0n.
Options
*
Run-On Interval
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
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.).
Run-On Duration Pump 2
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.).
ENABLED
DISABLED
Range: 0.00 to 1000.00
Default: 0.00
Range: 0 to 65535
Default: 0
Range: 0 to 65535
Default: 0
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