Pump Station performance optimization has become an important feature  for pump stations throughout the world. A well optimized pump station can increase the lifetime of the pumps as well as decrease the cost involved in running the station. Station optimization can also help in reducing the hardware, software and maintenance costs significantly.

However it has been seen that many a times the pump stations (or lift stations) are not designed or maintained close to the best possible solution. Design changes after the Pump Station commissioning for including optimizations features are commonly seen these days.

Majority of the reasons behind this are; inability to identify all the optimization parameters during the design and commissioning phase;  huge costs and time constraints involved with the software reprogramming (PLC programming and SCADA changes) which are quite often seen requiring vast changes; incapability to see the relevant historical data required for achieving optimization; inability to trial different combinations of optimization features; and changing demands to the station  due to geographical & environmental changes, increase in population leading to varying optimization design requirements.

The MultiSmart Pump Station Manager is designed to eliminate these optimization issues. With the help of the easy to configure parameters through the LCD faceplate the user can configure different optimization settings and combinations. Having more than 500 tags for a standard two pump controller MultiSmart configuration the station’s functioning, with the relevant data, can be easily trended and observed over a period of time for fine tuning. The trending can be viewed from a SCADA system, as well as using the built-in Data Logging feature of the MultiSmart. The license free TrendReporter software, available for download at the MultiTrode website (www.multitrode.com), can be used to view the trends from the data logged within the MultiSmart unit.

Tags with the relevant data can be added for local or remote data logging, or deleted when not required, by browsing through the tag list in the LCD faceplate and selecting a few options. The tag database in the unit has about 3000 entries which covers all of the station optimization and pump control data available.

The MultiSmart unit comes with a lot Optimization features built into the software. The users can enable or disable particular features and setup & change the parameters according to the requirements with a few button presses. Therefore these features can easily be trialed after the station commissioning or whenever new changes are required and the best solution can thus be identified and implemented.

Available ready to use optimization features are as follows,

• Odor reduction (Max Off Time)
• Max Run Time
• Station Max Pumps to Run
• Minimize Fat Buildup
• Well Clean Out
• Minimize Excessive Starts
• High Inflow
• Well Washer
• Well Mixer
• Blocked Pump Detection
• Pump Max Starts Per Hour

The most common settings are found in the main station optimization screen.  New custom configurations can also be created easily without needing any hardware or firmware changes. The pump controller functionality has a whole range of advanced pump station parameters and can support multiple wells, multiple groups of pumps and multiple profiles.

A variety of standard pump alternation schemes are also present in the MultiSmart which are listed below.

• Alternation (std)
• Fixed (std)
• Alternation Special
• Fixed Strict
• Hours Run
• Pump Starts
• Efficiency
• N to 1
• First On First Off

Alternation by efficiency is one of the popular features utilized by the MultiSmart customers.

We have seen that the MultiSmart Pump Station Manager can improve the performance of a station immensely with the help of the standard and configurable optimization features. We can look at each of these features and how the customers are benefiting from them in the coming posts.

Read more…

General News, Industry, Technical Notes Lift Station Optimization, Pump Controller Optimization, Pump Station Optimization

Cellular communications has made huge progress in the last few years, and many people would say is a viable solution for water & wastewater telemetry.

The first area that cellular comms started getting attention was for water supply and wastewater collection systems – as a backup to radio.

The requirements would state that radio was the primary communications and cellular GPRS was the backup on more important stations.

We also saw a few utilities who requested cellular as their primary communications method, either because they had had a lot of problems with radio in the past, or because their geography meant that building a radio network was clearly a lot more expensive than using cellular.

Let’s look at the thinking behind the backup first of all.

Historically, in water and wastewater, radio has the been the main method of RTU communications, with PSTN (phone lines) coming a long way behind in second place. One of the main benefits of radio was the fact that the utility owned the infrastructure and therefore “felt” some level of control over it.

In theory, if you own the infrastructure then you are able to run an operation which ensures an uptime that you are happy with, i.e., that meets the organizational requirements. If communications to one site goes down then you have a problem – but one that you can theoretically fix. If a repeater goes down, it’s the same situation.

Contrast that with cellular comms where if a cell tower goes down, or for some reason there are other comms problems in the backbone or to one area, you have to wait for the cellular operator to fix it.

But apart from those whose lifeblood is radio communications, this can also present a major disadvantage of radio communications. A lot of utilities don’t have the expertise to troubleshoot and fix radio systems, or to replace radio repeaters in the middle of a storm. Even if they do, there’s the question over response time. In later posts we will look at possible benefits of cellular, but for now, the radio “ownership” problem and the low cost of cellular comms raised the possibility of using cellular as a backup. Read more…

General News Cellular Communication, telemetry

MultiSmart Pump Station Manager, with firmware version 2.2.0 onwards, now includes support for easy interfacing of the ABB ACS550 and ACS800 series VFDs. After a study in the US and UK, it was found that the ABB VFD’s are widely used in Pump Station Controls.

ABB - ACS800 Drive

Having support for the MODBUS RTU capability MultiSmart can be interfaced to any VFD’s with MODBUS support for bringing the data in and to send controls to the drives, and these data can be easily brought to a SCADA system. This process is fairly easy and straight forward with the help of the buttons on the MultiSmart faceplate. The only time consuming part is adding the MODBUS points by going through the VFD data sheet.

However, after identifying the customer demands, this integration process is further simplified for selected ABB VFD’s in MultiSmart firmware version 2.2.0, which requires only a few button press. With this feature MultiSmart can now use the currents read from the VFD, instead of current read from the MultiSmart Motor Protection module, for generating the fault alarms.

Even though MultiSmart has the capability to stop the pumps based on faults, these faults are configured only to alarm due to the fact that the VFD will holdout the pumps from running. The relevant motor protection faults, when interfaced to these VFDs, are set to Auto Reset within MultSmart to avoid the need for two resets when the fault is cleared, thereby simplifying the steps involved with the operations.

The MODBUS communication can be either setup over a RS232 or over ethernet. A RS232 to 485 converter is required if the RS232 option is selected. Ethernet communication can be setup using a cross over cable or using a straight through ethernet cable with the help of an ethernet switch.

Read more…

General News, Technical Notes ABB, ACS550, ACS800, MultiSmart

The Blue Ocean Strategy is a great book by Kim and Mauborgne (Harvard Press) that looks at how exciting new  products can be created at the development stage by focusing on uncontested market space.

In the book the authors argue that instead of companies trying to be better than the competitors and fighting over market share they should instead focus on making the competition irrelevant by creating uncontested Blue Ocean market places where new demands of customers are satisfied.  Rather than trying to beat the competition at their own game businesses looking for uncontested space should answer four questions:

• Which of the factors that our industry takes for granted should be eliminated?
• Which factors should be reduced well below the industry’s standard?
• Which factors should be raised well above the industry’s standard?
• Which factors should be created that the industry never offered?

I found the book a good read and like anyone who learns about a new model or concept I wanted to try it out on one of our products at home.  I knew that no-one here had read the book before designing the MultiSmart Pump Station Manager over five years ago so it would be a good test. I am now sitting down and will do my best to answer the four questions:

• What did we eliminate that the industry took for granted?
That is easy. We took away the need to bring in a third party expert to set up, commission or make changes to the configuration of pump control in a lift station. It was all made so easy to use that any operator could be given simple training to do it and save themselves big dollars!

• What factor did we reduce below the industry standard? 
After thinking about that for a while it occurs to me that the MultiSmart reduces the number of moving parts found in any panel or station control box. The standard control panel is full of gear. A MultiSmart takes a lot of that away – up to 14 different devices are eliminated from one panel, maybe more. Again – big savings.

• Which factors did the MultiSmart raise well above the industry standard?
One of the biggest issues for the industry is getting enough data from lift stations and pump station. On average the industry is used to controllers providing less than 50 tags. We saw that as being the big picture for customers. The more information you have to hand the better your decision making. Asset managers are becoming more focused on network management, efficiency, energy and operating costs. Information and lots of it was going to be the key. We upped the ante with the MultiSmart and brought back 500 tags of data (and growing).  This allows greater level of control and monitoring than ever offered before in a controller.

• Which factor did we create that had not been offered before? 
Going back to the book for examples the authors showed how Cirque Du Soleil had solved this by being the first to offer a high level of theatre to their industry (Circus entertainment). That leads me to say that the MultiSmart was the first to offer an out-of –the-box solution for full pump station management. All the hard work has been done for you.  All the smarts come with the unit and we provide free upgrades as we develop them.

You might agree with me on those answers or you might not. My view is that they stand up to some scrutiny but I would love to hear if anyone has a different view. Read more…

General News, Industry MultiSmart, Pump Controller, Pump Station Management