Calculating Efficiency - MultiTrode MultiSmart Installation & Operation Manual
Pump station manager & rtu
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- Installation & operation manual (260 pages) ,
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MultiSmart Installation & Operation Manual
17.4 Calculating Efficiency
The MultiSmart has support for calculating the pump efficiency and displaying it on the LCD screen as well
as sending it to SCADA. To be able to calculate the efficiency; energy monitoring, motor protection and flow
must be enabled. Refer Section 17 for more information on energy monitoring and motor protection and
refer Section 20 for more information on flow.
Efficiency can be displayed in Litres/kWh or kWh/Megalitre. This can be configured by navigating to:
and selecting the Efficiency Units.
Efficiency information for today, yesterday, this week, last week, this month & last month and total efficiency
can be observed at the following menu on the LCD screen.
The efficiency can also be set to be displayed in the main screen. To set this:
Navigate to:
Select the desired efficiency data to be displayed.
The efficiency calculations are updated dynamically in all flow calculation modes except for calculated mode
where the efficiency is updated at the end of the pump cycle.
When an overflow condition is detected, a constant flow rate which is the previous average of the pump
outflow rate is use for the current pump cycle for efficiency calculations. As soon as the pumps catch up and
the overflow is cleared the MultiSmart will resume normal flow calculations.
There are occasions where manual override of power factor is desirable. For example, Modbus
communications to a VFD may not include power factor, and energy and efficiency calculations may
therefore be incalculable. In this scenario the power factor can be measured manually and stored into the
MultiSmart as a parameter which is then be used by the MultiSmart for energy and efficiency calculations.
To configure this navigate to:
and select the corresponding power (Power 01 etc) option with respect to the pump number, set the power
factor value of Manual Power Factor option and Save the settings.
MultiSmart will now use the new power factor for the efficiency calculations.
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MultiSmart_IO_Manual_A4_v2-22_R15.doc
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Questions and answers
I have four pumps connected to my multi smart. One jockey and three that rotate with the jockey as needed. My problem is that the jockey pump always shows its running even when it isn't running. the other pumps show actuate run times and starts. only the main pump shows continuous run even when it is turned off. I was wondering if there any advice I could be given to resolve this issue.
The MultiTrode MultiSmart may show the jockey pump as continuously running even when it is turned off due to the "External Run" status. This occurs if the pump is started by an external control method, such as a manual override switch, where the contactor remains closed but no run command was sent by the controller. As a result, the system continues updating run time statistics and generating relevant faults or warnings. Checking for an external control signal or a stuck contactor may help resolve the issue.
This answer is automatically generated