Set Relays To Service Ratio Duty Assist (Sra) - Siemens SITRANS L 7ML5400 Operating Instructions Manual

General Operation
7.7 Pump Control
Set the ON Setpoints
Parameter
ON Setpoint Pump 1
(2.7.1.6.) (Page 190)
ON Setpoint Pump 2
(2.7.1.8.) (Page 190)
Set the OFF Setpoints
Parameter
OFF Setpoint Pump 1
(2.7.1.7.) (Page 190)
OFF Setpoint Pump 2
(2.7.1.9.) (Page 191)
7.7.3.4

Set Relays to SERVICE RATIO DUTY ASSIST (SRA)

Parameter
Pump Control
Mode (2.7.1.5.)
(Page 189)
Service Ratio
Pump 1 (2.7.1.10.)
(Page 191)
Service Ratio
Pump 2 (2.7.1.11.)
(Page 191)
Set the ON Setpoints
Parameter
ON Setpoint Pump
1 (2.7.1.6.)
(Page 190)
ON Setpoint Pump
2 (2.7.1.8.)
(Page 190)
108
Sample Value
1.3 m
1.2 m
Sample Value Description
0.4 m Sets the level at which pump 1 turns off.
0.3 m Sets the level at which pump 2 turns off.
Value Description
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.
25 Sets the ratio to: 25% for pump 1, i.e. pump 1 will run 25% of the
time.
75 Sets the ratio to: 75% for pump 2, i.e pump 2 will run 75% of the
time
Sample Value Description
1.3 m Sets the level at which pump 1 turns on.
1.2 m Sets the level at which pump 2 turns on setpoints
Description
Sets the level at which pump 1 turns on.
Sets the level at which pump 2 turns on.
Operating Instructions, 04/2021, A5E33329501-AG
SITRANS LUT400