Siemens SITRANS LUT400 - Page 8

Table of contents
SITRANS LUT400
6 Operating Instructions, 07/2019, A5E33329501-AC
7.7.4 Setting a pump up (reservoir) group .................................................................................... 110
7.7.4.1 Set the common parameters ................................................................................................ 111
7.7.4.2 Set Relays to ALTERNATE DUTY ASSIST (ADA) .............................................................. 111
7.7.4.3 Set the ON Setpoints ........................................................................................................... 111
7.7.4.4 Set the OFF Setpoints ......................................................................................................... 111
7.7.5 Pump Control Interlocks ....................................................................................................... 112
7.7.6 Other Pump Controls ........................................................................................................... 113
7.7.6.1 Totalizing pumped volume ................................................................................................... 113
7.7.6.2 Setting a pump to run-on ..................................................................................................... 114
7.7.6.3 Setting the pump start delays .............................................................................................. 114
7.7.6.4 Reducing wall cling .............................................................................................................. 114
7.7.6.5 Saving energy ...................................................................................................................... 115
7.7.6.6 Tracking pump usage .......................................................................................................... 117
7.8 Other controls ....................................................................................................................... 117
7.8.1 Relays controlled by time ..................................................................................................... 117
7.9 Flow ...................................................................................................................................... 118
7.9.1 Flow calculation .................................................................................................................... 118
7.9.2 Totalizing flow ...................................................................................................................... 118
7.10 External Totalizers and Flow Samplers ............................................................................... 118
7.10.1 Relay contacts ...................................................................................................................... 119
7.10.2 Totalizer ............................................................................................................................... 119
7.10.3 Flow Sampler ....................................................................................................................... 120
7.11 Open Channel Monitoring (OCM) ........................................................................................ 121
7.11.1 Method of Flow Calculation .................................................................................................. 122
7.11.2 Common parameters ........................................................................................................... 122
7.11.3 Setting Zero Head ................................................................................................................ 123
7.11.4 PMDs with Exponential Flow to Head function .................................................................... 124
7.11.4.1 Standard Weirs .................................................................................................................... 124
7.11.4.2 Applicable weir profiles ........................................................................................................ 124
7.11.4.3 Parshall Flume ..................................................................................................................... 126
7.11.4.4 Leopold Lagco Flume .......................................................................................................... 127
7.11.4.5 Cut Throat Flume ................................................................................................................. 128
7.11.4.6 Khafagi Venturi ..................................................................................................................... 129
7.11.4.7 Universal calculation support ............................................................................................... 147
7.11.4.8 Typical flow characterization ................................................................................................ 148
7.11.4.9 Example flumes.................................................................................................................... 149
7.11.4.10 Example weirs ...................................................................................................................... 150
7.12 Trends .................................................................................................................................. 151
7.13 Data logging ......................................................................................................................... 152
7.13.1 Viewing the Data Log ........................................................................................................... 152
7.14 Simulation ............................................................................................................................ 153
7.14.1 Pump relay behaviour during simulation .............................................................................. 154
7.14.2 Fail-safe and Simulation ...................................................................................................... 155
7.14.3 HART status ......................................................................................................................... 155
7.14.4 Simulation process ............................................................................................................... 155
7.14.4.1 Simulating a fixed level ........................................................................................................ 156
7.14.4.2 Simulating a changing level .................................................................................................
156
7.14.4.3 Simulating Discrete Inputs ................................................................................................... 156
7.14.4.4 Simulation timeout ............................................................................................................... 157