Siemens SITRANS LUT400 - Setting a Pump up (Reservoir) Group

General Operation
7.7 Pump Control
SITRANS LUT400
110 Operating Instructions, 07/2019, A5E33329501-AC
Note
•
The SITRANS LUT400 will not sacrifice other pumping strategies to ensure that the
service ratio is held true.
•
If the pump ratios are set to the same value, then the ratio equals 1:1 and all pumps are
used equally (default).
When a pump start is required (ON Setpoint), the pump with the fewest running hours (with
respect to the assigned ratio values) starts.
Conversely, when a pump stop is required (OFF Setpoint), if multiple pumps are running
simultaneously, the pump with the most running hours (as compared to the assigned ratio
values) stops.
7.7.4 Setting a pump up (reservoir) group
Sets a group of two pumps to pump up a reservoir.
①
Inflow
②
Level
③
Sensor reference point
④
High calibration point
⑤
Low calibration point
⑥
Outflow
* ON Setpoint Pump 1 / Pump 2
** OFF Setpoint Pump 1 / Pump 2