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Warning

Please Note

The specifications of the product detailed on this

Set-Up Guide may change without notice. RDM

Ltd. shall not be liable for errors or for incidental

or consequential damages, directly and indirectly,

in connection with the furnishing, performance or

misuse of this product or document.

Ensure that all power is

switched off before

installing or maintaining

this product

Mercury 3 M & E Installation Guide

www.resourcedm.com

The Mercury 3 Range

From Resource Data Management

For Version 1.0M & 1.0E

The Mercury Mk3 controller is primarily intended for use in refrigeration display cabinets or coldroom applications. It will switch the

evaporator valve (LLV or EEV) based on the value of its temperature or pressure input. It has outputs to control lights, fans, suction valve,

trim heaters and defrost control. It can have variable inputs for reading a pressure transducer along with two digital inputs that can be

added to, by utilising the switched resistors feature.

The controller has many features, some of which are energy saving, such as pulsed trim heaters or the case off with lights parameter

(see parameter section for further details). There are several hardware variants of the Mercury Mk3 controller split into two types; an E-

version that has Relay 1 as a Solid State Relay for switching EEVs and the second is an M-version that has Relay 1 as an electro-

mechanical relay for switching solenoid LLVs. For these two types, there are further options of adding analogue inputs, choice of serial

or built in IP communications along with either a remote or integral display option (see ordering information for more details).

The controller supports PT1000, NTC2K, 470R, 700R, 3K, 5K, 6K, NTC2K25, NTC10K or NTC10K(2) temperature probes.

Note: probe types cannot be mixed.

Hardware Variants

As mentioned above, the Mercury 3 controller offers a number of choices concerning the physical hardware including choice of IO,

Display and communications type. Furthermore depending on the valve type (electronic expansion or mechanical solenoid valve) the

option of either a solid state or mechanical relay is available. For specific part numbers see Ordering Information.

Inputs/ Outputs

Relay 1

Display

Comms

6 Probe, 2 Digital Inputs / 5 Relay Outputs

Mechanical Relay

Integral/ Remote

Display

Serial/

Ethernet

6 Probe, 2 Digital & 2 Analogue Inputs / 5 Relay Outputs

Solid State Relay

Compatible Displays

The following displays are compatible with the Mercury Remote Display Controllers:-

Description

Part Number

Mercury Remote Display with 5m cable

PR0325

Mercury Keyswitch Remote Display with 5m cable

PR0326

Mercury DIN Remote Display with 5m cable

PR0327

Mercury DIN Keyswitch Remote Display with 5m cable

PR0328

Mercury mk2 Remote Display with 5m cable

PR0725

Configuration

The controller gives you up to six configuration options (see ‘Type’ menu):-

Display value

Mercury Mk3 Mechanical Expansion Valve

Mercury Mk3 Electronic Expansion Valve

Integral controller (HT)

N/A

Integral controller (LT)

N/A

Remote piped case controller (LT)

Remote piped case controller (HT)

Coldroom controller (LT)

Coldroom controller (HT)

Note: The controllers are delivered pre-configured as Type 1 and Type 3 for variants M and E respectively.

Compatible Network Interfaces

Mercury controllers which do not have an IP interface built in are capable of connecting to either a TCP/IP local area network, an RS485

Genus compatible network, an RDM wireless mesh network or they can be used in standalone mode with no network output. To connect

to a network you must add the correct communications module. Connecting to any of these communication modules will automatically be

detected on power up and will affect the ‘Net’ menu set up screens available to you. Note controllers with built in IP will be able to

communicate to any IP switch, including the rear ports of the RDM Mercury Hub.

Description

Part Number

IP Futura (Single Mercury to IP Interface)

PR0016

RS485 Interface (Single Mercury to RS485 Interface)

PR0026

Mercury IP Switch (IP support for 10 controllers)

PR0018

Mercury IP Switch with Pressure/Humidity Inputs

PR0018-PHI

Wireless Mesh Interface (for single Mercury)

PR0730