Rockwell Automation 1766-L32 Pump Station Controller Quick Start - Manual (Page 18)

16 Publication IASIMP-QS037A-EN-P - May 2013
Chapter 1
Setting the Process Configuration
1. From the Main screen, press Process Config to display the setup
screen. The number of pumps shown may vary depending on how many
pumps are in use.
2. From the setup screen you can:
– Use the UP/DOWN buttons to select between Hand, Off and
Auto for each configured pump.
– Set a Primary selection for each pump. Select from Alternate, Lead,
Lag 1 and Lag 2.
– Set a Secondary selection for each pump. Select from Lag 1, Lag 2
and Not Used.
The secondary selections only come into use when the primary
selection is set as Alternate and a second pump is required to run.
The following are three examples of sequencing:
1. Pumping sequence example #1: All pumps have “Alternate” selected
as primary and are in “Auto”. When a pump is required to run, pump
#1 starts and runs until the level is satisfied. The next time a pump is
required to run, pump #2 starts; however the level gets to a point
where one pump cannot keep up and a second pump is required. At
that point all of the pumps with “Lag 1” selected as secondary will
start. All pumps will continue to run until the level is satisfied.
2. Pumping sequence example #2: Same scenario as example #1 except
pump #2 is “Off ”. After pump #1 runs and then turns off. Pump
#3 will run on the next cycle. Because even though pump #2 has
“alternate” selected, it is turned “Off ” and is therefore taken out of
the alternation sequence.