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Mercury Mk2

Our control strategy starts with Mercury controllers. These are highly complex yet capable devices that have been engineered to be extremely flexible, reliable and yet remain simple to use

The Data Manager is a versatile front end for refrigeration monitoring We offer this system in two versions: the 6-5M and the 6-5E.The difference in the two versions being that one is for mechanical expansion valves (6-5M) and the other for electronic expansion valves (6-5E)




Mercury Mk2 features include:


Speedset technology TCP/IP option

Built - in display/On board setup

Compact and robust housing

Easy installation

Online upgrades

Option used to drive pulsed electronic expansion valve


On board logging

Multiple network options

Extended intelligent control

Stand alone operation

Option to drive remote display

Switched power mode supply for supplies of 90 to 260 volts


Each model is capable of being used to control high or low temperature on coldrooms, integral or remote display cases. They both come complete with a display and can be set up through the surface mounted buttons without the need for a seperate complex hand - held setup unit. These controllers can be networked or they can stand alone using their on - board real -time clock.

To make things simple, we have produced the Mercury controllers using a switched mode power supply. This means that supply voltage fluctuations are not an issue; the controller can operate in the range of 70 to 270 volts without any performance degredation. The controllers can use PT1000 or NTC probes. For Clients unused to setting up controllers through our button interface, there is an option to use our "Communicator" software with a P.C. The Communicator software can be downloaded from our support page . Our software offers a novel way to work with controllers and opens up more features on the Mercury, such as event logs and asset management.

When you start to network Mercury controllers the real flexiblilty of the system becomes apparent. To network the Mercury device, a communication module is added: this plugs into the data port at the rear of the Mercury, with the outputs specified through the Client's choices. We offer two modules to choose from: 485 Legacy and IP Futura.

The 485 legacy module gives Client's the ability to connect the Mercury controller to an existing 485 network. Two types of network are supported: Danfoss/Woodley 3rd party 2 - way system, OR Honywell Elm genus system. The IP Futura module allows you to connect up to an Ethernet based IP network . The module has three rotary switches that should be set up to give that module a unique number within the site. The front - end system could be an RDM Data Director, which recognizes the device you have plugged in and assigns it an IP address.

Initially, the controller is then identified by the number entered on the rotary switches, but the controller can also be given a more meaningful name and alias. The beauty of an IP network is that the address stays with the communication module, so you can move the display case as many times as you like, plug it back in to the Local Area Network - and the device is back online!

The true benifits and flexibility of IP come through when we start talking about Front - ends and ActiveFM.

For specific information on the Mercury controller, please access the PDF link provided below:

PDF icon PDF: Mercury 2 guide

Mercury Monitor

The Mercury monitor shares the same housing and uses the same components as the Mercury controller. The Mercury monitor runs completely different software . The monitor is designed to pick up temperature, defrost and plant faults from anything on site and send the information over the network. It shares the same principals and benefits as a controller:

Built-in display

PT1000/NTC Probes

Access via buttons/Communicator software

Switched mode power supply

All the communication options

Logging and asset management


You can apply 6 temperature probes and defrost signals or a combination of up to 6 probes/defrost and plant faults. The monitor really does come into its own when you are faced with a refit and some old or outdated equipment is being retained and requires monitoring.

Data Monitor

The Data Monitor is a wall mounted device that allows you to connect up to 48 temperature probes and plant inputs. Each input channel can be configured with alarm limits, alias names and time delays so when the alarm comes through to a Data Director you know exactly what channel has a problem.

In addition the Data Monitor is not limited to PT1000 probes, it can also read 470 ohm, 700 ohm, 2k, 2k25, 3k, 5k and 100k thermometer probes

All details are in the Technical support area of this website.

Mercury pack controllers

RDM has recently released two pack controllers. The first is the 6-10 step controller. This device has the ability to manage up to 10 equal stages of control based on an "up" delay and a "down" delay time.

The Mercury pack controller is a versatile front end monitoring solution The input is from a standard dead band pressure switch giving either an up, down or neutral signal. As you would expect the normal features are there:


A more complex model is also available

Switched mode power supply

All communication options

This model does not require probes


Access via buttons and Communicator software

Logging and asset management

Built-in display


We also provide a slightly more complex controller model, the 11-10P Pack controller. This is a fully specified, multi - purpose controller, capable of up to four different configurations and 10 stages of output. It can be configured as either:

A 10-stage pack controller

A dual temperature pack controller

A pack and condenser controller

A condenser controller


With this controller we recommend you use the "Communicator" access. When you do you will be able to see at a glance how easy it is to set up and use this controller. We believe that if you use our "Communicator" software with this pack controller, you will not require any instruction manuals - We are confident that it is that simple!

To try this system for yourself, please select the link below, to connect to a Mercury controller "Live" on the Internet. For the service field the user name is "service" and for the password field the password is:  "1234".

http://mercury.resourcedm.com   (Device may occasionally be offline)