Siemens SITRANS LUT400 Series - Page 396

A5E33329501 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS Page 83
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General Operation
Set Relays to FIXED DUTY BACKUP (FDB)
Set the ON Setpoints
Set the OFF Setpoints
Set Relays to SERVICE RATIO DUTY ASSIST (SRA)
Set the ON Setpoints
Set the OFF Setpoints
Parameter Value Description
2.7.1.5. Pump Control Mode FDB Sets the control algorithm used to trip the pump
relay to FIXED DUTY BACKUP. Only one pump
can run at a time.
Parameter
Sample
Value
Description
2.7.1.6. ON Setpoint Pump 1 1.3 m Sets the level at which pump 1 turns on.
2.7.1.8. ON Setpoint Pump 2 1.2 m Sets the level at which pump 2 turns on.
Parameter
Sample
Value
Description
2.7.1.7. OFF Setpoint Pump 1 0.4 m Sets the level at which pump 1 turns off.
2.7.1.9. OFF Setpoint Pump 2 0.3 m Sets the level at which pump 2 turns off.
Parameter Value Description
2.7.1.5. Pump Control Mode SRA Sets the control algorithm used to trip the
pump relay to SERVICE RATIO DUTY ASSIST.
Multiple pumps can run simultaneously. Pump
usage is based on RUN time rather than last
used.
2.7.1.10. Service Ratio Pump 1 25 Sets the ratio to: 25% for pump 1, i.e. pump 1
will run 25% of the time.
2.7.1.11. Service Ratio Pump 2 75 Sets the ratio to: 75% for pump 2, i.e pump 2
will run 75% of the time
Parameter
Sample
Value
Description
2.7.1.6. ON Setpoint Pump 1 1.3 m Sets the level at which the first pump turns on.
2.7.1.8. ON Setpoint Pump 2 1.2 m Sets the level at which the second pump turns
on.
Parameter
Sample
Value
Description
2.7.1.7. OFF Setpoint Pump 1 0.4 m Sets the level at which the first pump turns off.
2.7.1.9. OFF Setpoint Pump 2 0.3 m Sets the level at which the second pump turns
off.