Siemens SITRANS LUT400 - Set Relays to FIXED DUTY ASSIST (FDA); Set Relays to FIXED DUTY BACKUP (FDB)

General Operation
7.7 Pump Control
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
107
7.7.3.2 Set Relays to FIXED DUTY ASSIST (FDA)
Parameter
Value
Description
Pump Control
Mode (2.7.1.5.)
(Page 185)
FDA Sets the control algorithm used to trip the pump relay to
FIXED DUTY
ASSIST
. Only one pump can run at a time.
Set the ON Setpoints
Parameter
Sample Value
Description
ON Setpoint Pump 1
(2.7.1.6.) (Page 186)
1.3 m Sets the level at which pump 1 turns on.
ON Setpoint Pump 2
(2.7.1.8.) (Page 186)
1.2 m Sets the level at which pump 2 turns on.
Set the OFF Setpoints
Parameter
Sample Value
Description
OFF Setpoint Pump 1
(2.7.1.7.) (Page 186)
0.4 m Sets the level at which pump 1 turns off.
OFF Setpoint Pump 2
(2.7.1.9.) (Page 186)
0.3 m Sets the level at which pump 2 turns off.
7.7.3.3 Set Relays to FIXED DUTY BACKUP (FDB)
Parameter
Value
Description
Pump Control
Mode (2.7.1.5.)
(Page 185)
FDB Sets the control algorithm used to trip the pump relay to
FIXED
DUTY BACKUP
. Only one pump can run at a time.
Set the ON Setpoints
Parameter
Sample Value
Description
ON Setpoint Pump 1
(2.7.1.6.) (Page 186)
1.3 m Sets the level at which pump 1 turns on.
ON Setpoint Pump 2
(2.7.1.8.) (Page 186)
1.2 m Sets the level at which pump 2 turns on.