Service Ratio Duty Backup (P111 = 55) [Mr 200]; First In First Out (Fifo) (P111 = 56) [Mr 200]; Pump By Rate (P121) [Mr 200]; Other Pump Controls [Mr 200] - Siemens MAG 1100 Operating Instructions Manual

To create a grouping of pumps where two pumps make up 50% of the run time and the
third pump makes up the other 50%.
P122 is set to these values:
P122 Index
1
2
3

Service Ratio Duty Backup (P111 = 55) [MR 200]

Selects the lead pump based on number of hours each pump has RUN and the specified
ratios that each pump requires. Only one pump can RUN at a time.
Please note that this feature applies to the MultiRanger 200 only.
This algorithm is the same as Service Ratio Duty Assist except that it will only RUN one
pump at a time. When the next pump in the sequence starts, the previous pump stops.

First In First Out (FIFO) (P111 = 56) [MR 200]

Selects the lead pump based on the Alternate duty but uses staggered off setpoints and
shuts down pumps based on the first in, first out rule.
Please note that this feature applies to the MultiRanger 200 only.
This algorithm starts pumps in the same way as Alternate Duty Assist but uses staggered
OFF setpoints to shut the pumps down. When the first OFF setpoint is reached the FIFO
rule shuts down the first pump started. If the pumps started in sequence 2,3, 1 then they
would be shut down in sequence 2,3,1.

Pump by Rate (P121) [MR 200]

Starts pumps until the level is changing at the rate specified in P702 or P703.
Please note that this feature applies to the MultiRanger 200 only.
Pumping costs can be less because only the highest ON setpoint needs to be
programmed and this results in a lower difference in head to the next wet well which, in
turn, results in less energy being used to pump out the well.

Other Pump Controls [MR 200]

Please note that these features apply to the MultiRanger 200 only.
There are a number of other controls available to modify pump behaviour.
7ML19981FB05 MultiRanger 100/200 – INSTRUCTION MANUAL
Value
25
25
50
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