Smart Outflow - MultiTrode MultiSmart Installation & Operation Manual

MultiSmart Installation & Operation Manual
Additional fault parameters can be found in the Advanced menu:
•
Select a pump and press
•
Select Flow

20.7 Smart Outflow

This is a MultiSmart patent pending feature. The Smart Outflow feature allows the MultiSmart to recalculate
the inflow by stopping pump(s) for a short period when pump runtime is excessive.
Flow calculations have an inherent uncertainty - when the pump is pumping, the inflow is unknown. In most
cases, assuming the inflow from the last cycle and averaging pump flow rates over a number of cycles
reduces or eliminates the inaccuracies arising from unknown inflow.
However, one case is common - during peak wet weather events, high inflows may cause the pump(s) to run
for a long period. This scenario is not easily differentiated from a partially blocked pump. The Smart Outflow
feature, if enabled, turns off the pump (but only if a spill is highly unlikely) and checks the increase in level to
verify the current inflow. If the inflow is effectively unchanged from the previous calculated inflow, then the
long pump runtime is most likely due to a partially blocked pump.
To be able to use this feature, the flow module must be enabled in the MultiSmart. (If not, refer to Section 28
for turning on this feature). Navigate to:
In the flow General Settings, select the Flow Enabled and set the Mode to Calculated. Enter the desired
Averaging Cycles (the default is 10). This sets how many pump cycles are used in the outflow averaging
calculations (Refer to Section 20.1). Remember to Save the changes.
The Smart Outflow must now be enabled, navigate to:
following parameters.
Name
Recheck Inflow after Pump Run Time
Recheck Inflow Pump Stop Time
Over-ride Level
Table 36 – Smart Outflow Parameters
The Smart Outflow feature only deactivates the pumps (in order to recalculate inflow) once in any one pump
down cycle.
It is also recommended to set maximum pump running time to ensure that if a pump is blocked, the station
will cycle to the next pump.
To do this navigate to
Run Time. Ensure that while using this feature, Max Run Time is set to a longer time than the value for
Recheck Inflow after Pump Run Time. Otherwise the Smart Outflow calculation will never occur as the
pumps will alternate after the max pump running time is reached.
MultiSmart_IO_Manual_R20
+ / -
+ / -
, then select a specific flow alarm, e.g. High Flow Fault
Description
The continuous pump running time period after which the recalculation
of the inflow needs to be performed
The time period after which the pumps are restarted and inflow is
calculated
Define the level above which the smart outflow feature is disabled
and select Smart Outflow Enabled. Now set the
+ / - + / -
then Status
and configure the Max
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