Connect® RTU unit

It is both pump controller and SCADA devices in a single unit. Connect®  is the result of intensive development work from one of the industry's leading instrument manufacturing companies. Connect® is designed and manufactured by MJK in Denmark.  Our first product for pump station monitoring and control was developed in 1983.  Since then MJK has gained experience in pump controls / RTU's and that is now integrated into the Connect®.  A clear proof that an MJK product provides a safe and long-lasting choice.  
Connect® is characterized by its compact design, simple operation and flexible options.


Advantages using Connect®

  • Pre-programmed functions and menus
  • Clear presentation of data
  • Communication options
  • Network Ready
  • Energy saving Ready
  • Versatile telemetry solution
  • Built-in data logger for analog inputs and all events
  • Ready to use RTU - Remote Telemetry Unit

Features and functions in Connect®

  • Control and monitoring of wastewater pumping installations
  • Control and monitoring of drinking water treatment installations
  • Control of variable speed drives for optimizing energy consumption
  • Collecting data and data logging from flow and level instruments
  • Communication using public telephones, private lines, GSM, GPRS, UHF Radios, Ethernet, WiFi etc.
  • Connect® can simultaneously handle pump control while performing other complex functions.

Connect® has been designed on the same platform as our new instrument line, where the measurement and data log database communicates with the display device. This division not only saves space and money but allows you to connect multiple devices in the network, so the number of inputs and outputs can be expanded.

The flexible communication modules support the ideal and most economical way of communication for the task. We can offer GSM / GPRS and PSTN Modem, Radio, own lines via RS485 or RS232 and Ethernet.

Input and output modules
Connect® comes with an input and output module (I/O board) with:

  • 16 digital inputs
  • 8 digital outputs
  • 6 analogue inputs and
  • 1 analogue output

In addition, the Connect base has two network connectors, one for an instrumentation NET, and one for a Connect NET. This is described in the "Networking" Section below.

Built-in Wizard for easy configuration
Connect® has a wizard for the configuration of the desired function. When starting you’ll be guided easily through the configuration and with a few choices the Connect® configuration is completed and ready for use.

Wastewater pumping
Connect® can be used as a pump control for up to 8 water pumps. Connect® controls and regulates the pumps from a level transmitter connected to one of the six analogue inputs. Connect® collects pump data while operating, and communicates data, events and alarms to your SCADA system.

Combined rain and wastewater pumping station
Connect® has the ability to manage two pumping operations simultaneously such as would be required in a combination of a rain and wastewater pumping station. Connect® could, for example, control four sewage pumps and two rain water pumps. In this case you only need two level transmitters - - one for each pump sump.

Drinking Water
Connect® has functionality to control and optimize raw- and pure water pumps to control filters with backflow return, or for controlling and monitoring of booster pumps at the water supply network.
Connect® also handles monitoring of water towers, intrusion protection, collection and storage of measured values, recording night flow, etc.
With simple operations, multiple functions, and the possibility of interconnection of networks with many units, CONNECT® is the ideal device for managing all functions of a modern water supply system.

Event (incident) logging / extended data logger
Connect® performs event/incident logging with an large capacity.
For a given input Connect® even changes the log interval. Connect ® has the capacity for 30.000 data points with data and time-stamp included. 
All features are pre-programmed in the Connect®, so it really is a plug-and-play system, leaving just a few user selected settings. 


Connect® is a compact unit easy to set up and use, and so flexible that it can be applied in a vast number of applications well beyond the pump control examples we’ve described here. Click her to find upcoming product training dates


Below some of the many features are described:


Sometimes during heavy rain the pumps can be forced to stop so the water distribution system can be used as a reservoir, thus avoiding overflow and return pumping. Connect® can perform feedback control from other pumping stations equipped with Connect® for system wide coordination.
All features are pre-programmed in the Connect®, so it really is a plug-and-play system, leaving just a few user selected settings.

WIFI connectivity

MJK Connect App can also be used to access selected control end monitoring functions of the Connect RTU.


The easy installable Wi-Fi module fits new as well as already installed Connect devices, as a build-in module or as external Wi-Fi antenna.


Energy Optimization

With the increasing awareness of energy consumption and rising energy prices, it is an essential feature that Connect® has a range of functions that support energy efficient pumping strategies. A few examples might be:
Wastewater Lift Station
With the Connect®'s built-in functionality for energy optimization of wastewater pumpsregular calculations are conducted so energy consumption on the pumps is optimized for the amount of water to be pumped from the pumping station.
Connect® can, with frequency transformers on each pump, and a flow meter on the outlet pipe from the pumping station, optimize and control the speed of the pumps from a flow measurement and the pump’s energy consumption.
Connect® allows the level to move freely between a low and a high limit, so we always calculate and control to achieve the minimum energy used to move a certain amount of water. We let the level vary between the limits, to run energy-optimized frequencies as long as possible.

If the water level goes above the preset limit, the pump’s speed increases and an extra pump is switched on, all controlled by the Connect. With large volumes of water, Connect® switches the energy optimization off and controls according to an abnormally high inflow operation to remove the large amount of water. With the excess volume of water removed, Connect® switches back to its energy optimization mode by itself.

Pressure increase on pumping station on the water supply network
With the frequency transformers on the pumps the optimal numbers of pumps in operation and their speed will be determined by the CONNECT®, so the pumps will work to their optimum speed, delivering water while efficiently using energy.
Filling of water tower / pure water tank
Connect® can prioritize pumping at night (if consumption also allows it), so any daytime surcharge on electricity is reduced.

Storm Flow

With the build-in internal storm flow function, the Connect® can calculate storm events, giving data for flow and volume based upon level measurement and pre-defined coalition between level and volume.






With its multiple opportunities of communication the Connect® is a very simple system to build up.
Connect® has an Instrument NET, where all signals for control, measurement and alarm handling from MagFlux flow meters and frequency transformers (or other instruments that use Modbus communication) communicate through a two-wire connection between the units. 
Connect® Instrument NET can be expanded as needed. As an individual controller each instrument can be equipped with inputs and outputs and configured individually, just as several Connect® units can be combined.



Instrument Link

Use Connect® with Instrument Link

Case stories

Read more about Connect® in use on Danish plants (in Danish):