Siemens SITRANS LUT400 - Pump Control Interlocks

General Operation
7.7 Pump Control
SITRANS LUT400
112 Operating Instructions, 07/2019, A5E33329501-AC
7.7.5 Pump Control Interlocks
①
Low calibration point
②
High calibration point
③
Sensor reference point
④
Inflow
⑤
Level
⑥
Relay output
⑦
Discrete input
⑧
Outflow
Parameter
Sample Value
Description
Pump Control Mode
(2.7.1.4.) (Page 185) or
Pump Control Mode (2.7.1.5.)
(Page 185)
ADA Sets the control algorithm used to trip the pump
relay to
ALTERNATE DUTY ASSIST.
Enable Pump 1 (2.9.3.1)
(Page 209)
ON Enables pump start interlock for Pump 1.
Pump 1 Discrete Input
(2.9.3.2) (Page 210)
Discrete Input 1 Sets the discrete input to use for pump start
interlock on Pump 1.
Enable Pump 2 (2.9.3.3)
(Page 210)
ON Enables pump start interlock for Pump 2.
Pump 2 Discrete Input
(2.9.3.4) (Page 210)
Discrete Input 2 Sets the discrete input to use for pump start
interlock on Pump 2.
Discrete Input 1 Logic
(2.9.2.1) (Page 209)
Normally Closed Use if necessary to reverse logic for Discrete
Input 1.
Discrete Input 2 Logic
(2.9.2.3) (Page 209)
Normally Closed Use if necessary to reverse logic for Discrete
Input 2.
These values will ensure that any pump reporting a failure is removed from the pumping
rotation. For more information on pump interlocks and discrete inputs, see Discrete Inputs
(Page 91).