Pumps And Groups - MultiTrode MultiSmart Installation & Operation Manual

MultiSmart Installation & Operation Manual
NOTE: The Pump Station Manager can be set up so that it periodically runs past the normal deactivation
level for a configured time, to enable a full well clean-out. This is the well clean out mode in Station
Optimization.

13 Pumps and Groups

The number of pumps is specified during the Setup Wizard. Depending on the hardware and software
configuration purchased, the number of pumps is limited to 3, 6 or 9 pumps.
Alternation of pumps is on and set to Alternation (std) by default. All pumps are placed into one group (and
maximum groups to run is set to one).
The following eight alternation schemes are available for sequencing pumps within a group:
Alternation (std)
Fixed (std)
Alternation
Special
Fixed Strict
Pump Hours and
Pump Start
Efficiency
N to 1
First On First Off
N to M
Table 6 – Alternation Schemes
Most installations use the first 2 options: Alternation or Fixed.
There are three alternation schemes available for sequencing between groups. They are Alternation (std),
Fixed (std), and Alternation Special.
NOTE: The number of pumps is specified during the Setup Wizard and can only be modified by running
the Setup Wizard again. Any configuration changes made must be re-entered.
NOTE: Efficiency alternation is based on the calculated efficiency for 'last week'.
MultiSmart_IO_Manual_R20
The pumps alternate on each start. If a pump faults, the next pump in the cycle takes over.
The pumps do not alternate on each start. If a pump faults, the next pump in the cycle takes
over.
The pumps alternate on each start. If a pump faults, the next pump in the cycle does not
start until the activation point for that pump is reached.
The pumps do not alternate on each start. If a pump faults, the next pump in the cycle does
not take over until activation point for that pump is reached.
Options allow alternation based on hours and starts. This can be useful in special
circumstances. For example, a large 2-pump water station. Each day one pump runs for
about 4 hrs in the morning, and the other for around 1-2 hrs in the afternoon. So even
though they have alternation, P1 always runs in the morning and the hours run on P1 is
much higher than P2.
In this mode the pump alternation occurs with the most efficient pump being favoured. This
mode is especially useful where an old pump, scheduled for replacement, is coupled with a
new pump. The most efficient pump is run N times in a row before alternating the duty cycle
to the other pumps, this minimizing energy cost. The default of N is 10 and the most
efficient pump will be alternated once every 10 runs (this frequency can be changed in the
MultiSmart advanced mode). For the efficiency mode to be active, the pumps have to run at
least 10 cycles and the power efficiency data must be available for calculations. This mode
uses pump efficiency last week and this will not be active if the efficiency results are reset
or unavailable. See section 13.1.1.
The first pump defined in this section is run as the duty pump N times in a row before
alternating the duty cycle to the other pumps.
The first pump that starts is the first pump to turn off. For example, if the lead pump starts &
is later followed by the lag pump, when the level falls, the lead pump is the first to turn off.
The pumps run in the ratio defined by N and M. For example, a common ratio is 3:2.
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