Pump Control Interlocks - Siemens SITRANS L 7ML5400 Operating Instructions Manual

7.7.5

Pump Control Interlocks

①
②
③
④
⑤
⑥
⑦
⑧
Parameter
Pump Control Mode
(2.7.1.4.) (Page 189) or Pump
Control Mode (2.7.1.5.)
(Page 189)
Enable Pump 1 (2.9.3.1)
(Page 213)
Pump 1 Discrete Input
(2.9.3.2) (Page 213)
Enable Pump 2 (2.9.3.3)
(Page 214)
Pump 2 Discrete Input
(2.9.3.4) (Page 214)
Discrete Input 1 Logic
(2.9.2.1) (Page 212)
Discrete Input 2 Logic
(2.9.2.3) (Page 213)
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).
SITRANS LUT400
Operating Instructions, 04/2021, A5E33329501-AG
Low calibration point
High calibration point
Sensor reference point
Inflow
Level
Relay output
Discrete input
Outflow
Sample Value
ADA
ON
Discrete Input 1
ON
Discrete Input 2
Normally Closed
Normally Closed
Description
Sets the control algorithm used to trip the pump
relay to ALTERNATE DUTY ASSIST.
Enables pump start interlock for Pump 1.
Sets the discrete input to use for pump start inter-
lock on Pump 1.
Enables pump start interlock for Pump 2.
Sets the discrete input to use for pump start inter-
lock on Pump 2.
Use if necessary to reverse logic for Discrete Input
1.
Use if necessary to reverse logic for Discrete Input
2.
General Operation
7.7 Pump Control
113