Resource Data Management PR0712-EPR Operation manual

Mercury 2 & Intuitive EPR Stepper Valve
Controller
Installation & User Guide
For Products: - PR0710, PR0711, PR0720, PR0721
Mercury
PR0712-EPR
PR0713-EPR
Intuitive
PR0752-EPR
PR0762-EPR
UK OFFICE
Resource Data Management Ltd
80 Johnstone Avenue,
Hillington Industrial Estate,
Glasgow, Scotland, G52 4NZ, UK
[phone]
[email protected]
US OFFICE
Resource Data Management Inc
100 North Sixth Street,
Suite 820C,
Minneapolis, MN 55403, USA
Tel [phone]
Fax [phone]
[email protected]
Resource Data Management

Revision 1.2a Page 2 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Table of Contents:
THE MERCURY & INTUITIVE RANGE ..............................................................................................................4
Variants............................................................................................................................................................4
Mercury Mk2 6-5..............................................................................................................................................4
Intuitive Mercury 6-5.........................................................................................................................................4
Compatible Displays ........................................................................................................................................4
Configuration .....................................................................................................................................................4
Compatible Network Interfaces........................................................................................................................5
Front Display Features......................................................................................................................................5
Connections.......................................................................................................................................................6
Mercury Mk2 6-5.................................................................................................................................................6
Intuitive Mercury Controller Intuitive Mercury Network Expansion Options ......................................6
Intuitive Mercury Stepper Valve with Daughter Board Option......................................................................7
Daughter Board Connection Details ................................................................................................................7
Ordering Information........................................................................................................................................7
Input and Output Allocation Tables.................................................................................................................8
Input / Output allocation table ..........................................................................................................................8
Switched Resistor Values ................................................................................................................................8
Setting up the controller ...................................................................................................................................8
Setup through front buttons .............................................................................................................................8
Setup Function Menu (Common to all types)...................................................................................................9
Recommended set-up method.........................................................................................................................9
rtc. Real time clock...........................................................................................................................................9
type. Set/view controller type...........................................................................................................................9
PArA. Set/view parameters (This can be achieved at the network front end) .................................................9
Unit. Set/view temperature unit and Probe type ..............................................................................................9
Display............................................................................................................................................................10
Parameter Tables.............................................................................................................................................10
Parameter Descriptions..................................................................................................................................12
See: Valve State –Overdriving......................................................................................................................13
Holding Current ...............................................................................................................................................15
Stepper Valve Type..........................................................................................................................................15
Valve Wiring...................................................................................................................................................15
Valve State –Overdriving ..............................................................................................................................15
Superheat Monitoring Using Pressure..........................................................................................................16
Local Daughter Card......................................................................................................................................16
Mercury Switch (PR0018-PHI).......................................................................................................................16
Remote pressure Direct from a Plant Pack Controller...................................................................................16
Relay State and functional operation ............................................................................................................16
Relay and screen states during defrost ........................................................................................................16
Defrost Termination........................................................................................................................................16
Fan Delay after Defrost..................................................................................................................................17
Network Configuration....................................................................................................................................17
RS485 Legacy module / Intuitive Internal RS485 Network card....................................................................17
Wireless Mesh Communication Module.........................................................................................................17
Fast Network Address Reset .........................................................................................................................17
IP Futura module / Intuitive Internal IP Network card ....................................................................................18
Mercury Switch ................................................................................................................................................18
Viewing .............................................................................................................................................................19
Input / Output Table .......................................................................................................................................19
Alarm Messages ..............................................................................................................................................20
Network Alarms ...............................................................................................................................................20
Modifying controller states.............................................................................................................................20
Fans Only “FAnS” ..........................................................................................................................................20
Case Off “CASE”............................................................................................................................................20
Lights Only “LitS”............................................................................................................................................20
Probe Offset...................................................................................................................................................20

Revision 1.2a Page 3 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Remote Commands.........................................................................................................................................21
Specification ....................................................................................................................................................22
Power requirements.......................................................................................................................................22
General...........................................................................................................................................................22
Valve Output ..................................................................................................................................................22
Relay Specification.........................................................................................................................................22
Inputs..............................................................................................................................................................23
Switched Resistor Example Wiring ...............................................................................................................23
Installation........................................................................................................................................................23
Dimensions ......................................................................................................................................................23
Dimensions ......................................................................................................................................................23
Fixing..............................................................................................................................................................23
Intuitive Mercury Mounting Instructions .........................................................................................................24
Cleaning.........................................................................................................................................................24
Ventilation ......................................................................................................................................................24
Disclaimer.........................................................................................................................................................24
APPENDIX 3 STEP SPEED (FREQUENCY HZ)..............................................................................................25
REVISION HISTORY.........................................................................................................................................25

Revision 1.2a Page 4 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
The Mercury & Intuitive Range
From Resource Data Management
The Mercury Mk2 controller is primarily intended for use in refrigeration display cabinets or coldroom applications. The controller will
operate an evaporator pressure regulator stepper valve based on the average value of the evaporator air on and air off probes. It has
outputs to control lights, fans, a suction line valve, and defrost control.
There is also a DIN rail mounted range, known as the Intuitive Mercury range, which is designed to be used in a control panel or electrical
tray. This range has the same features as the Mercury Mk2 controller with additional benefits such as higher rated relays each protected
by an integral fuse and the option for an internal daughter card to read suction pressure directly which can then be converted to the
evaporator in temperature for use in calculating superheat.
The controller supports PT1000, NTC2K, 470R, 700R, 3K, 5K, 6K, NTC2K25, NTC10K or NTC10K(2) temperature probes (note: probe
types cannot be mixed)
Variants
Mercury Mk2 6-5
Description
Part Number
Mercury Mk2 6-5 Stepper valve controller, integral display.
PR0712-EPR
Mercury Mk2 6-5 Stepper valve controller, remote display.
PR0713-EPR
Intuitive Mercury 6-5
Description
Part Number
Intuitive Mercury 6-5 Stepper EPR valve controller, integral display.
PR0752-EPR
Intuitive Mercury 6-5 Stepper EPR valve controller, remote display.
PR0762-EPR
Intuitive Mercury 6-5 Stepper EPR valve controller, integral display with a 4-20mA Input
Daughter Card
PR0752-EPR-IP-AiAo
Intuitive Mercury 6-5 Stepper EPR valve controller, remote display with a 4-20mA Input
Daughter Card
PR0762-EPR-IP-AiAo
Intuitive Mercury 6-5 Stepper EPR valve controller, integral display with a 0 –10V Input
Daughter Card
PR0752-EPR-IP-ViVo
Intuitive Mercury 6-5 Stepper EPR valve controller, remote display with a 0 –10V Input
Daughter Card
PR0762-EPR-IP-ViVo
Intuitive Mercury 6-5 Stepper EPR valve controller, remote display with a 0 –10V Input and
Probe Daughter Card (for use with the Intuitive Power Store PR0627)
PR0752-EPR-IP-1PVi
Intuitive Mercury 6-5 Stepper EPR valve controller, remote display with a 4-20mA Input and
Probe Daughter Card (for use with the Intuitive Power Store PR0627)
PR0752-EPR-IP-1PAi
Compatible Displays
The following displays are compatible with the Mercury / Intuitive Remote Display Controllers (PR0713 & PR0762): -
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 four configuration options, the controller is delivered pre-configured as type 3
Display value
Mercury Mk2 / Intuitive 6-5
3
Remote piped case controller LT
4
Remote piped case controller HT
5
Coldroom controller LT
6
Coldroom controller HT

Revision 1.2a Page 5 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Compatible Network Interfaces
Mercury and Intuitive Mercury controllers 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 set up screens available to you.
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
The Intuitive Mercury Controller is supplied as standard with an internal RS232 network card, this allows connection to any of the above
external network interfaces. Three alternative internal network cards are also available, these can be supplied factory fitted as an option
or purchased separately as an interface kit.
Description
Part Number
Intuitive Internal IP Network Card Interface Kit
PR0770
Intuitive Internal RS485 Network Card Interface Kit
PR0771
Intuitive Internal Wireless Mesh Network Card Interface Kit
PR0772
Front Display Features
LED’s: -
Valve (Relay 3)
Fans (Relay 1)
Lights (Relay 2)
Defrost (Relay 4)
Keys
On-Line
Off No network attached
Flashing Attempting to Log on to network
Steady On-line
Service
(See Parameter
18 for setup)
Alarm Main Display
HACCP
Enter Up Down Defrost
Note: Function keys illuminate when pressed, illumination is turned off 20 seconds
after the key is used. Press and hold the defrost button to force a manual defrost
4 character LED display, used to display temperature and status messages.

Revision 1.2a Page 6 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Input 1 Signal Input 2 Signal Input 3 Signal Input 4 Signal Input 5 Signal Input 6 Signal
M1B M1A M2A M2B
Stepper
Output
Relay 1 N/C Relay 1 Common Relay 1 N/O
Input
Commons
Relay 4 N/O Relay 3 N/O
Relay 3&4 Common
Relay 3 N/C Relay 2 N/C
Relay 2 Common
Relay 2 N/O
Supply Voltage 0V
Supply Voltage 24V
Connections
Mercury Mk2 6-5
Intuitive Mercury Controller Intuitive Mercury Network Expansion Options
Input and Output connections are made to the back of the controller, the RS232 communication port is on the side. The
diagram shows the connection detail. Inputs and outputs are assigned according to the chosen configuration. See Input/Output
tables for further details on connections.
IP Network Card (PR0770)
Rotary Address
Switches
Network
Collision LED
Network Activity
LED
Network
Expansion
Port
The Intuitive Mercury is supplied with an RS232
Network Card fitted as standard. Some example
optional network cards are shown below
RS232 Network Card (Default)
RS485 Network Card (PR0771)
Network Activity
LED
Screen
B-
Ground
A+
Ground
PR0772 Wireless Mesh Option also available. The network
interfaces work in the same way as there external counterparts.
All inputs and outputs are plug and socket. The supply voltage
and relay outputs have individual fuse protection.
Relay 1 N/C
Relay 1 N/O
Relay 1 Common
Relay 2 N/C
Relay 2 N/O
Relay 2 Common
Relay 3 N/C
Relay 3 N/O
Relay 3 Common
2B 2A 1A 1B
Relay 4 Common Relay 4 N/O Relay 4 N/C
0V
N/C
24V
24V Supply
Probe 6 Ground Probe 5 Ground Probe 4 Ground Probe 3 Ground Probe 2 Ground Probe 1 Ground
Stepper
Output
Communication
Port RS232 (Side)
Optional Daughter Card

Revision 1.2a Page 7 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Intuitive Mercury Stepper Valve with Daughter Board Option
The Intuitive Mercury EPR Stepper Valve controller can be purchased with optional daughter boards to read suction pressure which is
then used to calculate evaporator temperature and superheat, this is used for monitoring purposes only and does not have any control or
alarm functionality.
Please note the daughter boards are a factory fit option only and must be ordered with the controller
Note: Only 0 –10V or 4 –20mA Inputs used in this application (Outputs are not used)
*Each daughter board comes with a colour coded connector as a visual indication.
Daughter Board Connection Details
Note: “PWR” is a constant voltage output for external equipment, supply voltage is dependent on the board type, see the specification
section for more details. GND is a common ground for all inputs and outputs.
Ordering Information
When ordering a Mercury Intuitive controller the following ordering scheme can be used to purchase the desired hardware configuration.
This ensures the controller ships with the optional hardware pre-fitted.
PR07X1-EPR-Y-ZWhere X, Yand Zare selections from the tables below.
* Fitted by default.
** If no daughter card required leave field blank
Example –To order a remote display variant, with a built in IP module and a 4 –20mA board use the following part number: -
PR0762-EPR-IP-AiAo
Daughter Board Options
Connector Colour *
1 x 0-10Vdc Input & 1 x 0-10Vdc Output board
Blue
1 x 4-20mA Input & 1 x 4-20mA Output board
Black
1 x 0-10Vdc Input & 1 x Probe Input Expansion board
Blue
1 x 4-20mA Input & 1 x Probe Input Expansion board
Black
X
Description
5
Internal Display
6
Remote Display
Y
Description
RS232*
IP
IP Interface
RS485
RS485 Interface
Z
Description
No Daughter Card**
Vi/Vo
1 x 0-10Vdc Input & 1 x 0-10Vdc Output
Ai/Ao
1 x 4-20mA Input & 1 x 4-20mA Output
1P/Vi
1 x Probe Input & 1 x 0-10Vdc Input
1P/Ai
1 x Probe Input & 1 x 4-20mA Input
Daughter card location (Optional)
2B 2A 1A 1B
Stepper Output
1 x 0-10Vdc Input &
1 x 0-10Vdc Output
1 x 4-20mA Input &
1 x 4-20mA Output
1 x 4-20mA Input &
1 x Probe Input
1 x 0-10Vdc Input &
1 x Probe Input

Revision 1.2a Page 8 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Input and Output Allocation Tables
The following tables indicate; on a controller type basis, the functions of the inputs and outputs. Also shown are the digital inputs that are
derived by switching in a fixed value resistor across the input.
Input / Output allocation table
TYPE
Remote Case
Types 3&4
Coldroom Controller
Types 5&6
Alarm
Action
Plant Input
(Switched Resistors)
Input 1
Air on Temperature
Air on Temperature
Yes
Plant fault 1 or External
Defrost Input
Input 2
Air off Temperature
Air off Temperature
Yes
Case Clean
Input 3
Evaporator Temperature
Evaporator Temperature
No
Input 4
Suction Line Temperature
Suction Line Temperature
No
Case Clean Switch
Input 5
Defrost Termination or Monitor
probe (if used)
Defrost Termination or Monitor
probe (if used)
Conditional*
Door switch on types 5 & 6
Input 6
Logging Probe (If fitted)
Logging Probe (If fitted)
Conditional*
Man Trap on types 5 & 6
Input 7
Valve Shut Input (Only on 1P/Vi or
1P/Ai daughter card)
Valve Shut Input (Only on 1P/Vi or
1P/Ai daughter card)
Yes
Relay 1
Fans
Fans
N/A
Relay 2
Lights / Alarm Relay
Lights / Alarm Relay
N/A
Relay 3
Suction Line Valve/Defrost Valve
(LLV)
Suction Line Valve/Defrost Valve
(LLV)
N/A
Relay 4
Defrost Heater (N/O)
Defrost Heater (N/O)
N/A
Stepper
Output
Stepper Motor Valve
Stepper Motor Valve
N/A
* Alarm on monitor probe only if used
Switched Resistor Values
For PT1000 probes use 820 Ohm switched resistors. For NTC2K, NTC2K25 and 3K probes use 590 Ohm switched resistors. For 5K and
6K use 1K Ohm switched resistors. For NTC10K probes use 2k7 Ohm switched resistors. For NTC10K(2) probes use 2k2 Ohm switched
resistors. The resistors used must have a tolerance of 1% or better and the resistor must have a power rating of 0.25W. For improved
accuracy whilst using switched resistors RDM recommend resistors with 0.1% accuracy are used. Note the switched resistor features will
not function when using 470R or 700R probes. When a resistor is switched across the appropriate input it signals to the Mercury to
enable the switched resistor function described for that input whilst still recording the probe temperature on the input.
Temperature range for all probe types is -49oC to +60oCfor probe inputs which do not have a secondary function (switched resistors).
Inputs which have a secondary function are restricted to -42oC to +60oC. If the full temperature range is required on all inputs and no
switch resistor features are needed then please see Switch Resistor parameter P-19
Note: switched resistors will operate in LT (Low Temperature) and HT (High Temperature) applications using PT1000, NTC2K or
NTC2K25 probe types only. For all other probe types the switched resistor inputs will work in HT applications only.
Setting up the controller
Access to the controller can be achieved several ways
Through the front mounted buttons
Direct access by PC or palm top into the rear comms port. This requires a software package available on the RDM website
Through legacy front end panels on 485 networks
Through the RDM Data Manager.
Across an IP network. (Current controller IP address required)
Setup through front buttons
ENTER
UP
DOWN
To enter setup mode, hold the Enter and Down
buttons together for approximately 3 seconds until
the message “Ent” appears on the display. Now
press the Enter button again to enter the function
menu. IO will be displayed. Scroll up or down to go
through the list.

Revision 1.2a Page 9 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Setup Function Menu (Common to all types)
Recommended set-up method
If you are not connecting to a network and want to set up the controller through the buttons we recommend you use the following order
from the function menu.
rtc. Real time clock
(This will automatically synchronise on network systems)Use the up or down buttons to scroll through the display until the display reads
“rtc”
a. Press enter. The display will show “t-1”. press enter again
b. Scroll hours up or down (0 –23) press enter
c. Use up button to select “t-2”, press enter
d. Scroll minutes up or down (0 –59) press enter
e. Repeat for t-3 (seconds 0 –59)
f. Repeat for t -4 (Days up to 31)
g. Repeat for t -5 (months up to 12)
h. Repeat for t -6 (Year up to 99)
i. Use up button to display “ESC”, press enter to display “rtc”
Time clock is now set
type. Set/view controller type
a. From the function menu scroll to select type, press enter
b. Use the up/down buttons to scroll through case/coldroom configuration types. (see configuration table on page 4)
c. Press enter.
d. Scroll to select “ESC”
e. Press enter, controller type configuration is now set.
PArA. Set/view parameters (This can be achieved at the network front end)
a. From the function menu scroll to select PArA
b. Pressing Enter while PArA is displayed will enter the parameter menu. The first parameter option will be displayed as P-
01. Pressing the Up or Down button will present the other parameter options P-02, P-03 etc. See the parameter list below
to find what parameter number corresponds to which actual parameter. Pressing the Enter button will show the current
value of the selected parameter. Press Up or Down to modify the value and press Enter again to save the value. The
parameter list number will be displayed again. Two other options are present in the parameter menu –dFLt and ESC.
Selecting ESC will exit setup mode. Selecting dFLt will reset all parameters back to the default values for the current type
of controller.
Unit. Set/view temperature unit and Probe type
From the function menu scroll to select Unit
Press enter and the value will be displayed: -
Probe Types
0 for PT1000 Celsius
1 for PT1000 Fahrenheit
2 for NTC2K Celsius
3 for NTC2K Fahrenheit
4 for 470R Celsius
5 for 470R Fahrenheit
6 for 700R Celsius
7 for 700R Fahrenheit
8 for 3K Celsius
9 for 3K Fahrenheit
Use the up or down keys to select the units and press enter. This function is now complete
Display
Option
Explained in Paragraph
Display
Option
Explained in Paragraph
IO
View Inputs / Outputs and
States
Input / output table
nEt
Set/view network
configuration
Network Configuration
PArA
Set/View Parameters
Set view parameters
SoFt
View software version
Unit
Probe type and
Celsius/Fahrenheit option
Set View Unit
FAnS
Toggle Fans Only mode
Fans
diSP
Display whole units or
decimal
Display
CASE
Toggle Case Off mode
Case Off
tyPE
Set/View Controller Type
Set/view controller type
Ligt
Toggle Lights Only mode
Lights
rtc
Set/view Clock (rtc = Real
Time Clock)
Real Time Clock
OFSt
Probe Offset
Probe Offset
ESC
Exit Setup mode
10 for NTC2K25 Celsius
11 for NTC2K25 Fahrenheit
12 for 5K Celsius
13 for 5K Fahrenheit
14 for 6K Celsius
15 for 6K Fahrenheit
16 for NTC10K Celsius
17 for NTC10K Fahrenheit
18 for NTC10K(2) Celsius (USA NTC10K)
19 for NTC10K(2) Fahrenheit (USA NTC10K)

Revision 1.2a Page 10 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Display From the function menu scroll to and select diSP.
Press enter and one of the following values will be shown: -
0. Controller display will show the whole number and tenths value of a temperature reading. (Default)
1. Controller display will show temperatures as a whole number.
Parameter Tables
Not all parameters apply to all controller types, for example P-83 is Fan Control which only applies to coldroom types 5 & 6, this
parameter will not appear if the controller is set up as a type 3 or 4 case types. In the following table, the type columns on the right hand
side will be greyed out if that parameter does not apply to that controller type.
Number
Parameter
Range
oC ( oF )
Step
Units
Default LT
oC ( oF )
Default HT
oC ( oF )
Type
3&4
Type
5&6
P-01
Cut-in Temp.
-42 to 30 (-43.6 to 86)
0.1
Deg
-20 (-4)
0.0 (32)


P-02
Diff.
0 to 10 (0 to 18)
0.1
Deg
2 (3.6)
1.5 (2.7)


P-03
Control Weight
0 to 100
1
%
50
50


P-04
Display Weight
0 to 100
1
%
50
50


P-09
Response On
1 to 30
1
10
10


P-10
Response Off
1 to 30
1
10
10


P-51
EEV Minimum Opening
0 - 100%
1
%
10
10


P-56
EEV Start Opening
0 - 100%
1
%
10
10


P-55
Average Valve Opening
0 - 100%
1
%
100
100


P-57
EEV Divide Value
0 - 100%
1
50
50


P-12
Relay 3 Mode
0 = Suction Line, 1 = Defrost Valve
1
1
1


P-85
Key-switch Mode
0 = Case, 1 = Fans only, 2 = toggle, key
off
1
3
3


P-87
Control Probe type
0 = Use Air on Probe,
1 = Use Log Probe
1
0
0


P-90
Resistor Case Off
0 (Disabled),1(Enabled)
0
0


P-92
Fans temperature mode
0 = Off, 1 = Temperature,
2 = Over-temperature, 3 = Temp/OT
1
0
0


P-93
Fans Off Temperature
-42 to 30 (-43.6 to 86)
0.1
Deg
-10 (14)
8 (46.4)


P-83
Fan Control
0 = Off, 1 = Run, 2 = Pulse
1
1
1

P-78
Fan Pulse On
00:00 to 99:00
01:00
mm:ss
05:00
05:00

P-79
Fan Pulse Off
00:00 to 99:00
01:00
mm:ss
30:00
30:00

P-15
Probe 5 Select
0 = Defrost, 1 = Monitor
1
0
0


P-16
Relay 2 Mode
0 = Lights, 1 = Alarm
1
0
0


P-17
Evap. Select
0 = Local, 1 = Rem1, 2 = Rem2,
3 = Rem3, 4 = IoBrd
1
0
0


P-97
Control Fail Valve Level
0 to 100%
0.1
%
0
0


P-29
Probe 1 Resistor Function
0 = Plant fault, 1 = External defrost
1
0
0


P-18
Service Interval time
0 to128
1
KHrs
60
60


P-19
Switch Resistors
0 (Off), 1 (On)
1
1


P-98
Lights Case Off
0 (Off), 1 (On), 2 (Unused)
0
0

P-30
Valve Type
0=Carel, 1=Sporlan1, 2=Sporlan2
3=Alco, 4=Other*
1
---
0
0


P-31
Step Max
0 to 6800 See: Valve type
1
---
480
480


P-32
Step Close
0 to 6800 See: Valve type
1
---
500
500


P-33
Step Speed
0 to 6800 See: Valve type
1
Hz
50
50


P-34
mA Peak
0 to 500 See: Valve Type
1
mA
450
450


P-35
Half Step
0 (Off),1 (On) See: Valve Type
1
---
0
0


P-36
mA Hold Current
0 to 500
1
0
0


P-37
Shut Speed
0 to 6800
1
Hz
50
50


P-06
Shut Enable
0 (Off), 1 (On)
1
0
0


P-07
Shut Time
00:00 to 99:00
01:00
mm:ss
04:00
04:00


P-05
Overdrive Time
1 to 25
1
hours
8
8


P-77
Man Stop Valve/Fans
0 (Off),1 (On)
1
0
0


P-39
Stepper In Case Off
0 (Off),1 (On)
1
1
1


P-20
Alarm Delay
00:00 to 99:00
01:00
mm:ss
20:00
20:00


P-21
UT Alarm
-49 to 60 (-56.2 to 140)
0.1
Deg
-30 (-22)
-2 (28.4)


P-22
OT Alarm
-49 to 60 (-56.2 to 140)
0.1
Deg
-15 (5)
5 (41)


P-23
Log Probe Type
0 (Off), 1 (Logging), 2 (Logging/Alarm)
Off
Off


P-24
Slug Log Probe
0 (Off), 1 (On)
Off
Off



Revision 1.2a Page 11 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Number
Parameter
Range
oC ( oF )
Step
Units
Default LT
oC ( oF )
Default HT
oC ( oF )
Type
3&4
Type
5&6
P-25
Log Alarm Delay
00:00 to 99:00
01:00
mm:ss
20:00
20:00


P-26
Log UT Alarm
-49 to 60 (-56.2 to 140)
0.1
Deg
-35 (-31)
-1 (30.2)


P-27
Log OT Alarm
-49 to 60 (-56.2 to 140)
0.1
Deg
-12 (10.4)
6 (42.8)


P-28
Monitor OT Alarm
-49 to 60 (-56.2 to 140)
0.1
Deg
20 (68)
20 (68)


P-40
Defrost Mode
0 (Local), 1 (Remote), 2 (External)
Local
Local


P-41
Defrost Start
00:00 to 23:59
00:01
hh:mm
01:00
01:00


P-42
Defrosts per Day
0 to 8
1
6
6


P-43
No Defrost Time
0 to 25
1
hours
12
12


P-44
Def Terminate Temp.
-42 to 30 (-43.6 to 86)
0.1
Deg
14 (57.2)
10 (50)


P-45
Def Min Time
00:00 to 99:00
01:00
mm:ss
05:00
05:00


P-46
Def Max Time
00:00 to 99:00
01:00
mm:ss
24:00
24:00


P-47
Drain Down
00:00 to 24:00
00:15
mm:ss
01:30
01:30


P-48
Recovery Time
00:00 to 99:00
01:00
mm:ss
30:00
30:00


P-89
Pump Down Time
00:00 to 99:00
01:00
mm:ss
00:00
00:00


P-86
Fan Delay mode
0 = Time, 1 = Temp
1
0
0


P-49
Fan Delay Time (Cabinets)
00:00 to 99:00
01:00
mm:ss
00:00
00:00

Fan Delay Time (Coldroom)
00:00 to 99:00
01:00
mm:ss
03:00
03:00

P-88
Fan Delay Temp
-42 to 30 (-43.6 to 86)
0.1
Deg
-20 (-4)
0.0 (32)


P-50
Fans In Defrost
0 (Off), 1 (On)
On
On

P-94
Defrost Hold
0 (Off), 1 (On)
Off
Off


P-95
Defrost Skip
0 (Off), 1 (On)
Off
Off


P-96
Defrost Skip Time
00:00 to 99:00
01:00
mm:ss
12:00
12:00


P-38
Stepper in Defrost
0 = Closed, 1 = Open
1
0
0


P-80
Door Alarm Delay
00:00 to 99:00
01:00
mm:ss
20:00
20:00

P-81
Door Closes Valve
0 (No), 1 (Yes)
No
No

P-82
Door Stops Fan
0 (No), 1 (Yes)
No
No

P-60
Lights Mode
0 (Local), 1 (Remote), 2 (Man Off),
3 (Man On)
Local
Local


P-61
Sun Lights On
00:00 to 23:59
00:01
hh:mm
08:00
08:00


P-62
Sun Lights Off
00:00 to 23:59
00:01
hh:mm
20:00
20:00


P-63
Mon Lights On
00:00 to 23:59
00:01
hh:mm
08:00
08:00


P-64
Mon Lights Off
00:00 to 23:59
00:01
hh:mm
20:00
20:00


P-65
Tue Lights On
00:00 to 23:59
00:01
hh:mm
08:00
08:00


P-66
Tue Lights Off
00:00 to 23:59
00:01
hh:mm
20:00
20:00


P-67
Wed Lights On
00:00 to 23:59
00:01
hh:mm
08:00
08:00


P-68
Wed Lights Off
00:00 to 23:59
00:01
hh:mm
20:00
20:00


P-69
Thu Lights On
00:00 to 23:59
00:01
hh:mm
08:00
08:00


P-70
Thu Lights Off
00:00 to 23:59
00:01
hh:mm
20:00
20:00


P-71
Fri Lights On
00:00 to 23:59
00:01
hh:mm
08:00
08:00


P-72
Fri Lights Off
00:00 to 23:59
00:01
hh:mm
20:00
20:00


P-73
Sat Lights On
00:00 to 23:59
00:01
hh:mm
08:00
08:00


P-74
Sat Lights Off
00:00 to 23:59
00:01
hh:mm
20:00
20:00


P-58
Broadcast ID
0 to 999
1
-
0
0


P-59
Refrigerant
See Refrigerant Table Below
1
-
0
0


P-75
Pressure Units
0 = Absolute 1 = Gauge
1
-
0
0


P-76
Evap Offset
0.0 to 1.0
0.1
-
0.0
0.0


P-84
Glide
0.0 to 5.0
0.1
Deg
0.0
0.0


P-91
Trans Span
-3.4 to 180.0
0.1
Bar
13.8
13.8


P-99
Trans Offset
-3.4 to 180.0
0.1
Bar
0.0
0.0


dFLt
Restore defaults


* Parameters P-06, P-31, P-32, P-33 and P-35 only have an effect if “Other” is selected when configuring parameter P-30
* Transducer Span and Offset allows for the full range of the transducer to be used.
Span is the full range of the transducer
Offset is the value below zero.
Example: Danfoss AKS 33 with range: -1 bar to 12 bar
Span would be 190 (13 bar)
Offset would be -15 (-1 bar)
Refrigerant Table
0 = None. 1 = R12. 2 = R13. 3 = R13B1. 4 = R22. 5 = R23. 6 = R32. 7 = R114. 8 = R134A. 9 = R142B. 10 = R227. 11 = R401.
12 = R401A. 13 = R401B. 14 = R402. 15 = R402A. 16 = R402B. 17 = R404A. 18 = R407A. 19 = R407B. 20 = R407C. 21 = R500

Revision 1.2a Page 12 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
22 = R502. 23 = R503. 24 = R507. 25 = R717. 26 = R290 (Propane). 27 = R744. 28 = R407F. 29 = R410A
Parameter Descriptions
Number
Parameter
Description
P-01
Cut-in Temp
The target Temperature at which the valve will start opening.
P-02
Diff
Differential temperature below the cut-in temperature where the valve will stay in a steady state value.
P-03
Control Weight
Percentage of the Air-On temperature that is used to calculate the control temp. The remaining
percentage will be used on the Air-Off temperature
Example, P-03 set to 30%
Control temp = 30% Air-on + 70% Air-off
P-04
Display Weight
As above only applied to the display temperature
P-09
Response on
Allows the user to speed up the valve opening speed, with 30 providing the quickest response and 1
providing the slowest response.
P-10
Response off
Allows the user to speed up the valve closing speed, with 30 providing the quickest response and 1
providing the slowest response.
P-51
EEV Minimum Opening
Sets the minimum valve opening level, during normal operation the valve will not go below this level.
P-56
EEV Start Opening
Sets the valve opening % which is used after a defrost or when the controller is first powered on.
P-55
Average Valve Opening
Normally the valve during recovery will open to the last average position. This setting allows for that value
to be reduced by said percentage. For example if the average valve opening is calculated as 80% and P-
55 is set to 50% then the valve will open at 40%.
P-57
EEV Divide value
This parameter is not used in this controller and has no effect.
P-12
Relay 3 Mode
Relay 3 can be set to control a Suction line valve or defrost valve (LLV)
Suction –set for Suction Line Valve operation.
Defrost Valve –Used to closed the LLV during defrost.
P-85
Key-switch Mode
Allows the keys switch to be: -
Single turn for case off (Case off mode)
Single turn for Fans only (Fans Mode)
Single turn for case off, double turn for fans only (Toggle mode)
Key off disables the keyswitch.
P-87
Control Probe type
Switches between using the air-on probe and the Logging probe. Note the control and display
temperature will still be a derivative of the weighted
Average of the control probe + Air-off probe
P-90
Resistor Case Off
Turns on/off the switched resistor case off function
P-92
Fans temperature
mode
Allows the user to set the fans to turn off when: -
A pre-determined temperature is reached (P93)
When an over-temperature alarm is present
When either P93 is reached or an OT alarm is present
P-93
Fans Off Temperature
Temperature for the above (P92) operation. Note the defrost termination probe is the source of the
temperature reading used in this feature. If the defrost termination probe isn’t fitted then a similar process
to P-44 is used.
P-83
Fan Control
This feature allows for coldroom fans to be stopped when the coldroom is down to temperature thus
saving energy.
Run –fans operate as per the normal control strategy.
Pulse –When the valve closes the fans will stop when the Fan Pulse On parameter (P-78) time
expires. The fans then remain off for the Fan Pulse Off time (P-79). When the parameter Fan
Pulse Off time expires the fans come back on for the Fan Pulse on time. The cycle then
repeats. The fans resume normal operation if the valve operates. The fans pulse on/off to
ensure the circulation of air within the coldroom.
Off –When the valve closes the fans stay on for the Fan Pulse On (P-78) time before going off
until the LLV next operates.
Placement of the temperature control probes is important when using this feature
P-78
Fan Pulse On
The duration of the fans are pulsed on in Fan Control.
P-79
Fan Pulse Off
The duration of the fans are pulsed off in Fan Control.
P-15
Probe 5 Select
This input can be used as a defrost termination probe (default) or as a monitor probe with an OT alarm
level (P-28)
P-16
Relay 3 mode
This changes the function of relay 3 from Lights (default) to an alarm relay. The alarm relay is energised
for no alarm. Use the NC and Common for “Loop make” on alarm or use the NO and Common for “Loop
break” on alarm.
P-17
Evap. Select
This allows the controller to use a pressure transducer input which is then converted to temperature and
used in place of the evaporator in temperature to calculate the superheat value. In the event of no remote
value being received, the controller will revert to using the evaporator in probe value until the remote value
is restored. The calculated superheat is for information purposes only and does not have any control
functionality.
P-97
Control Fail Valve
Value
This value is used in the event of a control probe fail; In the EPR control algorithm the valve will remain at
this opening until the probe fault has been cleared.
P-29
Probe 1 Resistor
Function
Selects whether the switched resistor invokes either a Plant fault or an External Defrost.
P-18
Service Interval Time
(Run Hours)
Time (in 1000 x hours) before the service icon (Spanner icon) comes on. The Run Hours timer increments
based on the number of hours the controller has been powered up and running. Reset the spanner icon to

Revision 1.2a Page 13 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
off by changing this parameter to 0 and then back to the desired service interval. This process also resets
the Run Hours value to 0. To view the current Run Time value refer to the I/O list.
P-19
Switch Resistors
Enables switched resistors to be used for Plant Faults, External Defrosts, Case Clean, Man Trap, Door
Switch See : Switched Resistor Values
P-77
Man Stop LLV/Fans
When man trap input is activated the valve closes and fans are stopped. Normal operation resumes when
the mantrap input is deactivated.
P-39
Stepper In Case Off
Selects whether the EPR valve is open or closed when the controller is in case off mode.
P-98
Lights Case Off
Used to place the controller into Case Off when its lighting timer is in the off state. When the lighting timer
is in the on state the controller follows its normal control operation. This feature is disabled if the set point
(P-01) is below 6oC. Please note that when the controller is in case off all alarms are inhibited and all
outputs are turned off. Therefore care must be taken when enabling this parameter.
Off –Feature is not used and only the controller lights relay follows the lighting timer status.
On –Feature is in use and controller will be in Case Off whenever the lights timer is in the off
state.
Unused –This selection has no effect and should not be used. Please select from either Off or
On. This feature operates in either Local, using controller RTC, or Remote, using Data Manager
GP timer channel, lighting applications.
P-30
Valve Type
Choose from four preconfigured stepper valve types or select “Other” to enter Stepper characteristics for a
valve which is not listed.
See Valve Type
P-31
Step Max
Number of steps controller will send to open valve to 100%. Consult the valve manufacturer to obtain the
required number of steps. (Has no effect if Valve Type 0, 1, 2 or 3 selected at P-30)
See Valve Type
P-32
Step Close
Number of steps controller will send to close valve fully to 0% and overdrive the valve. The Steps required
when overdriving the valve can vary. Please consult the valve manufacturer to obtain the required number
of steps (Has no effect if Valve Type 0, 1, 2 or 3 selected at P-30)
See Valve Type
P-33
Step Speed
Increases and decreases the rate of step change. Enter a value in Hz. Valve Manufacturers specification
must be followed. (Has no effect if Valve Type 0, 1, 2 or 3 selected at P-30)
See Valve Type and Appendix 4 Step Speed.
P-34
mA Peak
Current requirement of motor. Care should be taken when setting this parameter as too high a setting
could damage the valve motor. Valve Manufacturers specification must be followed. (Has no effect if
Valve Type 0, 1, 2 or 3 selected at P-30) See Valve Type
P-35
Half Step
Uses half the range of the valve (Uses half value set in P-31 / P32). Has no effect if Valve Type 0, 1, 2 or
3 selected at P-30 See Valve type
P-36
mA Current Hold
Current supplied to valve when it is stationary, to prevent any drift in valve position
See: Holding Current
P-37
Shut Speed
This is the speed in Hz that the valve will shut at if the shut input (probe 7) becomes open circuit.
P-06
Shut Enable
Enables the shut input from the Intuitive Power Store. Will only work if valve type P-30 is set to
“Other”
P-07
Shut Time
Once the shut input has been activated the valve will stay closed for this period even if the shut input is
removed.
P-05
Overdrive Time
This is the period in hours that the valve will close fully to allow the controller to re calibrate the valve
position, this is required as there is no feedback to the controller from the valve in regards to it’s position.
See: Valve State –Overdriving
P-20
Alarm Delay
Delay for the over and under-temperature alarms
P-21
UT Alarm
Under temperature alarm set point. This alarm uses the control temperature.
P-22
OT Alarm
Over temperature alarm set point. This alarm uses the air-off temperature.
P-23
Log Probe Type
Allows the user to set the logging probe mode: -
Off
Logging with no alarms
Logging with alarms
P-24
Slug Log Probe
Applies a damping factor. This can be used to make a standard probe have the same temperature
response as a logging probe.
P-25
Log Alarm Delay
Delay for the Logging probe over and under-temperature alarms
P-26
Log UT Alarm
Logging probe under temperature alarm set point
P-27
Log OT Alarm
Logging probe over temperature alarm set point
P-28
Monitor OT Alarm
Monitor probe over temperature alarm set point
P-40
Defrost Mode
Allows the user to set the defrost mode: -
Local (Uses the internal parameters P-41 and P-42)
Remote (Requires a defrost schedule in the front end)
External (uses a switched resistor in input 1). When this signal is present a defrost is initiated.
Note: - If the external defrost signal is not removed then the controller will defrost according to the “No
Defrost” time and a missed defrost alarm will be generated. See P-29 for external defrost signal setup.
P-41
Defrost Start
When defrost mode is set to “Local”, this is the start time for the 1st defrost
P-42
Defrosts per Day
When defrost mode is set to “Local”, this is the number of defrosts per day equally spaced from the start
time.
P-43
No Defrost Time
If the controller misses a defrost command for any reason, a defrost will initiate after this time has elapsed
from the last defrost. Normally set to 2 hours over the normal defrost period.

Revision 1.2a Page 14 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
P-44
Def Terminate
The defrost will terminate (defrost control relay off) when the temperature of the defrost termination probe
reaches this value.
If the "defrost termination" probe is not fitted, defrost termination will occur when: -
The "coil in" probe reaches the set point (If fans are selected as "off during defrost") OR
The "air off" probe reaches the set point (If fans are selected as "on during defrost").
If the "coil in" probe is not fitted, the "air off" probe will be used.
P-45
Def Min Time
Minimum time that a defrost will use (Defrost can’t terminate until this time has elapsed. If termination
temperature is reached during this period, the defrost control relay is turned off, but the controller will not
continue the defrost cycle until the end of the defrost min period)
P-46
Def Max Time
Time period after defrost minimum that defrosts are allowed to terminate
P-47
Drain Down
A period after defrost max to allow the draining of any surplus water
P-48
Recovery Time
The valve is opened at the start of this period to allow the temperature to recover to the normal operating
point. This period also inhibits the OT alarm.
Note that if the air-off temperature is still above the OT alarm setpoint when this period expires, an
immediate OT alarm occurs; there is not a further alarm delay.
P-89
Pump Down Time
Time period before the defrost min period to allow for a pump down
P-86
Fan Delay mode
This parameter allows the fans start after a drain-down period to be delayed, either by time (P-49) or
when the temperature point (P-88) is reached. This parameter uses the same probe strategy as the
defrost terminate.
P-49
Fan Delay
Time after a drain-down period before the fans start if P-86 is set to time
P-88
Fan Delay Temp
Temperature at which the fans start after a drain-down period when P-86 is set to temperature.
P-50
Fans In Defrost
Allows the user to set the fans on or off in defrost. Note if the fans are set to on in defrost, they will go off
for the drain-down period and then follow the P-86 rules.
P-94
Defrost Hold
Turns the defrost hold feature on and off. When switched on, the controller can be held in defrost until a
remote command from the front end starts the recovery process.
P-95
Defrost Skip
Allows user to enable/disable defrost skip. This feature allows the controller to skip defrosts. If the current
defrost terminates on temperature then the controller will skip the next scheduled defrost providing the
previous defrost terminated before the defrost skip time (P-96). Operates only when the controller is set to
local defrost scheduling.
P-96
Defrost Skip Time
Time factor used in defrost skip. The previous defrost has to terminate before this value expires to allow
the controller to skip a defrost.
P-80
Door alarm delay
Delay after the door open input is activated before the alarm occurs.
P-81
Door Closes Valve
This parameter is used to close the stepper valve if the door opens. If the door remains open then the
valve will resume normal operation on the expiry of the door alarm delay (P-80).
P-82
Door Stops Fan
This parameter is used to stop the fans if the door opens. If the door remains open then the fans will
resume normal operation on the expiry of the door alarm delay (P-80).
P-60
Lights Mode
Allows the user to set the lights mode: -
Always off
Always on
Use a local schedule P-61 to P-74)
Use a remote schedule (Set up in the system front end)
P-61
Sun Lights On
When P-60 is set to Local, Sunday on time
P-62
Sun Lights Off
When P-60 is set to Local, Sunday off time
P-63
Mon Lights On
When P-60 is set to Local, Monday on time
P-64
Mon Lights Off
When P-60 is set to Local, Monday off time
P-65
Tue Lights On
When P-60 is set to Local, Tuesday on time
P-66
Tue Lights Off
When P-60 is set to Local, Tuesday off time
P-67
Wed Lights On
When P-60 is set to Local, Wednesday on time
P-68
Wed Lights Off
When P-60 is set to Local, Wednesday off time
P-69
Thu Lights On
When P-60 is set to Local, Thursday on time
P-70
Thu Lights Off
When P-60 is set to Local, Thursday off time
P-71
Fri Lights On
When P-60 is set to Local, Friday on time
P-72
Fri Lights Off
When P-60 is set to Local, Friday off time
P-73
Sat Lights On
When P-60 is set to Local, Saturday on time
P-74
Sat Lights Off
When P-60 is set to Local, Saturday off time
P-58
Broadcast ID
ID of Plant Controller being used to broadcast Suction Pressure
The Broadcast ID is derived from the Rotary Switch positions set on the Plant controller which is providing
the remote suction pressure.
Note: No two Plant controllers on a local area network can have the same rotary switches positions set.
This will have adverse affects on control.
P-59
Refrigerant
Type of refrigerant gas used in the system. See: Refrigerant Table above
P-75
Pressure Units
Absolute or Gauge
P-76
Evap Offset
Offset to allow for pressure drop over distance
P-84
Glide
Allows the calculated temperature to be offset by subtracting the value at (P-34)
P-91
Trans Span
Total range of the transducer
P-99
Trans Offset
Value below zero
dFLt
Restore default values
Restores all of the parameters to their default values

Revision 1.2a Page 15 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Holding Current
If using a type of valve that requires a holding current you must select “Other” at P-30 and make sure parameters P-31, P-32, P-33, P-34
and P35 are all set to the correct values.
An example of this is the Carel E2V valve which requires a holding current, although it is a Carel valve and has the same settings for
“Step Max”, “Step Close”, “Step speed” and “mA Peak” it must be set to “Other” at P-30 for the holding current to operate correctly.
Warning: Not all valves require a holding current and applying a holding current to valves that do not require one could result in damage
to the valve and/or controller.
Refer to Manufacturers Data Sheet for information on holding current.
Stepper Valve Type
Parameters P-31, P-32, P-33, P-34 and P-35 only have an effect if “Other” is selected when configuring parameter P-30. Other allows the
user to map in the requirements the stepper valve.
Selecting option 0, 1, 2 or 3 at parameter P-30 sets the controller for use with the factory set values for the type of valve selected. The
controller will override any values set in parameters P-31, P-32, P-33 and P-35. Note the parameters relating to the Stepper Valve type
should be configured prior to wiring the Stepper Valve to the Mercury 2 Stepper controller. If one of the three default valve types is selected
then changing P-31, P-32, P-33, P-34 and P-35 will have no effect.
Manufacturer
Model
Step Max
Step Close
Step Speed (Hz)*
mA Peak
Carel
E3V
480
500
50
450
Sporlan 1
SER B/C/D
2500
3500
200
160
Sporlan 2
SER 1.5 to 20
1596
1756
200
160
Alco
EX4/5/6
750
825
500
500
Sporlan (other)
CDS 4/7
2500
3500
200
147
Sporlan (other)
CDS 9/16/17
6386
6800
200
215
See Appendix 3 Step Speed also.
Valve Wiring
Manufacturer
Model
Wiring (Colours)
Connection Description (See Stepper Output)
Carel
E3V
Yellow
M1B
White
M1A
Green
M2A
Brown
M2B
Sporlan
SER 1.5 - 20
SER B/C/D
SEI 6
CDS 4/7/9/16/17
Green
M1B
Red
M1A
White
M2A
Black
M2B
Alco
EX4/EX5/EX6
White (A)
M1A
Black (B)
M1B
Blue (C)
M2A
Brown (D)
M2B
Important –Our information is taken from 3rd party data sheets at the time our document is created, any changes since will not be
incorporated in our document.
Review the manufacturer’s datasheet for the selected valve before installation. If you are unsure regarding any of the above steps please
contact RDM Technical Support for further assistance.
Valve State –Overdriving
Each time the Mercury 2 EPR is powered on the control valve state has to initialise as the controller will have no knowledge of the current
valve opening position for the stepper motor attached. During this process the controller will close the valve by a number of steps greater
than the total number of steps for the valve configured. This is achieved using the Step Close parameter and is referred to as “overdriving”
the valve. This process will synchronize the controller with the stepper valve output. This ensures the stepper valve is at the 0 steps position,
fully closed and the control algorithm will use this for future control operations.
In certain applications there is a necessity to overdrive the Stepper motor periodically. If during normal operation the valve closes to 0% then
at this point the valve will be overdriven. If the valve doesn’t close to 0% during normal operation then the valve will be overdriven during
each scheduled defrost. An additional feature is incorporated into the control algorithm, software V1.3 and above, which will overdrive the
Stepper motor output should the valve not close to 0% in an 8 hour period.
Please consult the stepper valve manufacturer’s data sheet to obtain the number of steps required to overdrive the valve.

Revision 1.2a Page 16 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Superheat Monitoring Using Pressure
There are several ways to use the suction pressure to calculate the evaporator in temperature, this is used for information only and has no control
or alarm functionality.
Local Daughter Card
(P17 set to IoBrd) A suction transducer can be connected directly to the input of the daughter card, the controller will calculate the evaporator
temperature from the suction pressure, and along with the suction temperature probe local to the controller, the superheat is calculated. Please
note that RDM recommend that the evaporator in temperature probe is fitted as the controller will use this to calculate the superheat in the event
of a transducer fault
(Parameters P58/59/75/76/84/91/99) will need to be set accordingly
Mercury Switch (PR0018-PHI)
(P-17 set to Rem1) The Mercury Switch can be used for superheat monitoring on an island by island basis. The evaporator in temperature probe
reading for a case controller can be obtained from the Mercury switch on which the controller is connected. A suction pressure transducer is
connected from the case Island to the 4-20mA input of the Mercury Switch and the pressure read from this transducer is converted to a
temperature based on the gas type being used by the system. This temperature is transmitted to each controller connected to the switch and,
along with the suction temperature probe local to the controller, the superheat is calculated. Please note that RDM recommend that the evaporator
in temperature probe is fitted as the controller will use this to calculate the superheat in the event of a communication loss with the Mercury
Switch. (P-17) allows for the use of this remote temperature provided by the Mercury Switch. Please see the Mercury Switch user document
(PR0018-PHI) for further details.
Remote pressure Direct from a Plant Pack Controller
Using IP Module
(P-17 set to Rem1, Rem2 or Rem3 depending on which input the suction transducer is connected to on the plant controller, transducer input 1, 2
or 3). Set the broadcast ID (P-58) to the ID of Plant Pack Controller (Rotary Switch Setting), (P-59) set to refrigerant type, (P-75) set to pressure
units absolute or gauge
Relay State and functional operation
Relay and screen states during defrost
State:
Pump Down
Defrost Min
Defrost Max
Drain Down
Fan Delay
Recovery
Screen:
DEF
DEF
DEF
DEF
DEF
REC
Def LED:
On
On
On
Off
Off
Off
Stepper Valve (set to closed in DF)
Closed
Closed
Closed
Closed
Open
Open
Stepper Valve (set to open in DF)
Open
Open
Open
Open
Open
Open
RLY 3 (set to suction line)
Off
On
On
On
Off
Off
RLY 3 (set to defrost Valve (LLV))
Off
Off
Off
Off
On
On
RLY 4 Defrost Relay
Off
On
On
Off
Off
Off
RLY 2 Lights relay
On
On
On
On
On
On
RLY 1 Fans (set to on in DF)
On
On
On
On
Off
On
RLY 1 Fans (set to off in DF)
On
Off
Off
Off
Off
On
Defrost Termination
Defrost termination will occur when the temperature parameter “def terminate”has been reached on the “defrost termination”probe. If the
“defrost termination”probe is not fitted, defrost termination will occur when: -
The “coil in”probe reaches the set point (If fans are selected as “off during defrost”)
Or The “air off”probe reaches the set point (If fans are selected as “on during defrost”)
If the “coil in”probe is not fitted, the “air off”probe will be used. If the “air off” probe is faulty termination will occur when the time-out
period has elapsed.
Relay 1-3 State
Function State
Wired
contact
Relay 1 off
Fans On
N/C
Relay 1 on
Fans Off
N/C
Relay 2 off
Lights On
N/C
Relay 2 on
Lights Off
N/C
Relay 2 off
Alarm Relay = Alarm
N/C
Relay 2 on
Alarm Relay = OK
N/C
Relay 3-4 &
Stepper State
Function State
Wired
contact
Relay 3 off
Suction or Df Valve Off
N/O
Relay 3 on
Suction or Df Valve On
N/O
Relay 4 off
Defrost Control Off
N/O
Relay 4 on
Defrost Control On
N/O
Stepper Valve
Off
Stepper Valve Closing
As per I/O
Diagram
Stepper Valve
On
Stepper Valve Operating
As per I/O
Diagram

Revision 1.2a Page 17 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Fan Delay after Defrost
The fans will come back on when: -
The fan delay time has elapsed if the “fan delay mode”is set to time
Or If the fan delay mode is set to “temp”, the fans will come on when the defrost termination probe reaches the fan delay set point,
or on the time parameter, whichever occurs first.
If the “defrost termination”probe is not fitted, the fans will come on when: -
The “coil in”probe reaches the control set point (If fans are selected as “off during defrost”)
Or The “air off”probe reaches the control set point (If fans are selected as “on during defrost”)
Network Configuration
The final section to setup is the network address. In all instances, this must be done before the controller is plugged into the site network.
The controllers have an auto-initialise function, which will automatically log the device onto the site network. If the wrong address has
been entered onto the network, you will have to reset the controller address by setting the address to 00-0, and then re-enter the correct
address. (You may have to deregister the wrong address from the home system as well).
When logging a Mercury or Intuitive Mercury with an RS232 interface onto a network you must first connect the controller to a
communications module, this is either a 485 Legacy, RDM Wireless Mesh system, IP Futura or Mercury Switch. When using an Intuitive
Mercury controller, the controller has to have the correct network card fitted (see “compatible network interfaces”). For connection to a
Mercury Switch (Hub) or an external network interface, the standard fitment RS232 network card is utilized.
RS485 Legacy module / Intuitive Internal RS485 Network card
Connecting an RS485 legacy Module or an Intuitive Internal RS485 network card to the controller will govern which set up screens are
made available. Both modules support the “Genus” protocol only.
Display
Option
485t
485 Network Type
485A
485 Address/Name
gAdd
Show underlying network address assigned to controller
rLog
Re-log the controller back onto the network
CLrA
Clear the address/name from the controller
ESC
Exit network menu. N.B. this option must be selected to save any changes made in this menu
The 485t option shows a value representing the network type. The possible values are:
Value
Network Type
1
Genus compatible (all versions)
2
RDM Wireless Mesh System (Wireless Mesh)
The 485A option shows a value representing either the name of the controller in a Genus compatible or Wireless Mesh network.
Wireless Mesh Communication Module
RDM Wireless Mesh System, please refer to the RDM Wireless Mesh Communication Module user guide, which can be obtained from
the RDM website, for information regarding connecting a controller to a Wireless Mesh network.
The value shown in 485A is of the form 05-6. This means the controller would try to log onto a Genus compatible or RDM Wireless Mesh
network using the name ‘RC05-6’.
The gAdd option displays (in hexadecimal format) the underlying network address assigned to the controller when it was logged onto the
network.
The rLog option allows the controller to be logged back onto the network with its current name. The ‘rLog’ message will flash for
confirmation. Press the Enter button to execute the command, Up or Down buttons to cancel.
Fast Network Address Reset
The ClrA option will clear out the network address and name in the controller. The ‘ClrA’ message will flash for confirmation. Press the
Enter button to execute the command, Up or Down buttons to cancel.
To enter this mode, hold the Enter, Up and Down buttons together for approximately 3 seconds until the message ClrA appears on the
display. ClrA is the first option in the menu consisting of the following options:
Display
Option
ClrA
Clear the address/name from the controller
ESC
Exit Setup mode

Revision 1.2a Page 18 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Pressing the Enter button to select the ClrA option will cause the ‘ClrA’ message to flash for confirmation, if the network type is set to
Genus compatible. Press the Enter button to execute the command, Up or Down buttons to cancel. If the network type is not set to
Genus compatible then the ClrA message will not flash and the ESC option can be used to exit the menu.
IP Futura module / Intuitive Internal IP Network card
In an IP system there are two options,
IP-L
IP-r
IP-L allows you to fix an IP address into the controller, which you would use when you are connecting the controllers onto a customer’s
local area network. This would allow the customer to view each controller using Internet Explorer
IP-r allows you to give each controller on the system a unique number. This number is then allocated a dynamic IP address by the
system DHCP server (such as the RDM Data Manager or Data Director)
IP-L
To configure the communication module or network card for IP-L, set all three rotary switches to zero. The module should then be
connected to the controller. In the case of an Intuitive Mercury controller where the network card is already fitted, the controller should be
powered off, all three rotary switches set to zero and the controller powered on.
1. nEt. From the function menu you can now select nEt
Press enter and the display will show “IP-L”, press enter
You can now set the address using the table below
Display
Option
IP-1
IP Address byte 1
IP-2
IP Address byte 2
IP-3
IP Address byte 3
IP-4
IP Address byte 4
nL
Network Mask Length
gt-1
Gateway Address byte 1
gt-2
Gateway Address byte 2
gt-3
Gateway Address byte 3
gt-4
Gateway Address byte 4
ESC
Exit network menu. N.B. this option must be selected to save
any changes made in this menu
IP-r
To configure the communication module for IP-r, set the three rotary switches to give each controller a unique identifier. The module
should then be connected to the controller and the network. In the case of an Intuitive Mercury controller where the network card is
already fitted, the three rotary switches must be set when the controller is powered off, the controller should then be powered on to
connect to the network.
2. nEt. From the function menu you can now select nEt
Press enter and the display will show “IP-r”, press enter
You can now view only the address given by the DHCP server
To ease setup, a single network mask length value is used. If the address has been specified with a network mask value in dotted IP
format e.g. 255.255.255.0 then the table below gives the conversion:
Mask
Length
Mask
Length
Mask
Length
255.255.254.0
23
255.254.0.0
15
255.255.255.252
30
255.255.252.0
22
255.252.0.0
14
255.255.255.248
29
255.255.248.0
21
255.248.0.0
13
255.255.255.240
28
255.255.240.0
20
255.240.0.0
12
255.255.255.224
27
255.255.224.0
19
255.224.0.0
11
255.255.255.192
26
255.255.192.0
18
255.192.0.0
10
255.255.255.128
25
255.255.128.0
17
255.128.0.0
09
255.255.255.0
24
255.255.0.0
16
255.0.0.0
08
Mercury Switch
Please refer to the Mercury Switch user guide, which can be obtained from the RDM website, for information regarding connecting a
controller to a network.

Revision 1.2a Page 19 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Viewing
Apart from setting up the controller, you can also view the status of the inputs and outputs and controller states.
From the function menu, select “I/O”, press enter. You can now scroll through the IO table as set out below. Inputs and outputs that do
not apply to a particular controller type will be greyed out.
Input / Output Table
Number
IO
Range*
oC ( oF )
Step
Units
Type
3&4
Type
5&6
I-01
Control Temp.
-42 to 60 (-43.6 to 140)
0.1
Deg


I-02
Display temp
-42 to 60 (-43.6 to 140)
0.1
Deg


I-03
Air on Probe
-42 to 60 (-43.6 to 140)
0.1
Deg


I-04
Air off Probe
-42 to 60 (-43.6 to 140)
0.1
Deg


I-05
Evaporator Probe
-49 to 60 (-56.2 to 140)
0.1
Deg


I-06
Suction Line Probe
-49 to 60 (-56.2 to 140)
0.1
Deg


I-07
Superheat
-30 to 60 (-54 to 108)
0.1
Deg


I-08
Logging Probe
-49 to 60 (-56.2 to 140)
0.1
Deg


I-09
Defrost Probe
-49 to 60 (-56.2 to 140)
0.1
Deg


I-10
Plant Fault
0 (OK), 1 (Alarm)


I-11
Case Clean
0 (Off), 1 (On)


I-12
Door Sensor
0 (Closed), 1 (Open)

I-13
Person Trapped
0 (OK), 1 (Alarm)

I-14
External Defrost
0 (Off), 1 (On)


I-15
Monitor Probe
-49 to 60 (-56.2 to 140)
0.1
Deg


I-16
Remote Evaporator Temp
-49 to 60 (-56.2 to 140)
0.1
Deg


I-17
MOP
0 (Off), 1 (On)


I-19
Divide Input
0 to 100
1.0
%


I-20
Remote Pressure
-3.4 to 108.0
0.1
Bar


I-21
Local Pressure
-3.4 to 108.0
0.1
Bar


I-22
Local Calc Temp
-49 to 60 (-56.2 to 140)
0.1
Deg


I-30
Shut Input
0 (Off), 1 (On) (Off shuts valve)
1.0


O-02
Suction Line Valve
0 (Open), 1 (Closed)

O-05
Defrost Control
0 (Off), 1 (On)


O-06
Lights
0 (Off), 1 (On)


O-07
Case Fans
0 (Off), 1 (On)


O-09
Valve Opening
0 to 100
0.1
%


O-10
Last Def. Time
00:00 to 23:59
hh:mm


O-11
Last Def. Length
00:00 to 03:00
hh:mm


O-12
Last Def. Ctrl Temp.
-49 to 60 (-56.2 to 140)
0.1
Deg


O-13
Last Def. Type
0 (None), 1 (Internal), 2 (External),
3 (Network), 4 (Display), 5 (Timed)


O-14
Suction Line Valve/Trim Heaters
0 (Open/Off), 1 (Closed/On)

O-15
Alarm 1 Relay (Relay2)
0 (Unused), 1 (OK), 2 (Alarm)


O-16
Alarm 2 Relay (Relay3)
0 (Unused), 1 (OK), 2 (Alarm)


O-17
Remote Relay (Relay 3)
0 (Off), 1 (On)


O-18
Run Time
0 –128 K Hours
1


O-19
Valve Step
0-6400
1


O-20
Door Open Time
00:00 to 23:59
hh:mm

O-21
Door Open Length
00:00 to 03:00
hh:mm

O-30
Set Point Offset
-49 to 60 (-56.2 to 140)
0.1
Deg.


S-01
Control State
0 (Stabilise),1 (Normal), 2 (Defrost Min),
3 (Defrost Max), 4 (Drain Down),
5 (Fan Delay), 6 (Recovery),
7 (OT Alarm), 8 (UT Alarm),
9 (Fans Only), 10 (Lights Only),
11 (Case Off),12 (Pump Down),
13 (Defrost Hold)


S-02
Valve State
0 (Off), 1 (Start), 2 (Run), 3 (Problem),
4 (Fail), 5 (Initial)


* Range is dependent on probe type

Revision 1.2a Page 20 of 25
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 2 & Intuitive Mercury EPR Stepper Installation Guide
www.resourcedm.com
Alarm Messages
The following alarms and messages can appear on the Mercury display.
Network Alarms
The table below shows the text and associated type number that is sent to the system "front end". The type number is normally used to
provide different alarm actions.
Alarm text
Type # (index)
Alarm text
Type # (index)
Missed defrost
15
Product under temperature
9
Plant Fault 1
3
Person Trapped
1
Case over temperature
4
Plant Fault 2
3
Case under temperature
5
Monitor Probe OT
12
Probe 1,2,3,4,5 or 6 Faulty
6
Case Off
29
Door Left Open
2
Remote evap temperature
6
Product over temperature
8
IO Brd evap temperature
6
Modifying controller states
During normal operation you can change the following states from the function menu
Fans Only “FAnS”
Selecting the Fans Only option will put the controller into the Fans Only state if the current state is not Fans Only. If the current state is
Fans Only then the controller will change to the Normal state. Selecting this option will exit the setup menu automatically. The display will
show “FAnS OnLy”
If a remote display with key switch is being used, this function can be invoked by turning the key switch to the fans only position (90
degrees clockwise) with parameter P85 set to "fans"
Case Off “CASE”
Selecting the Case Off option will put the controller into the Case Off state if the current state is not Case Off. If the current state is Case
Off then the controller will change to the Normal state. Selecting this option will exit the setup menu automatically. The display will show
“CASE OFF”. An alarm is generated, fixed delay of 1 minute, when the controller is placed into the Case Off state.
If a remote display with key switch is being used, this function can be invoked by turning the key switch to the case-off position.
(Clockwise 90 degrees) with parameter P85 set to "case".
Lights Only “LitS”
Selecting the Lights Only option will put the controller into the Lights Only state if the current state is not Lights Only. If the current state is
Lights Only then the controller will change to the Normal state. Selecting this option will exit the setup menu automatically. The display
will show “LitS OnLy”
Note. When lights are being used in “Remote” mode with a timing channel: -
If the controller goes offline, the lights are turned ON after a delay of 5 minutes. The lights will stay on until the controller comes back on-
line where they will revert to the state of the timing channel being used.
Probe Offset
This feature allows each probe value to be modified by an “offset”. Offset values are from -10OC (-18OF) to +10OC (+18OF) and on a
channel basis. Example C1 = Probe 1.
Display
Message
System status
Display
Message
System status
Ft
Control Fault
FAnS ONLy
Controller in Fans Only
Prb1
Probe 1 Fault
LitS ONLy
Controller in Lights Only
Prb2
Probe 2 Fault
CASE OFF
Controller in Case Off
Prb3
Probe 3 Fault
Ot
Over Temperature Alarm
Prb4
Probe 4 Fault
Ut
Under Temperature Alarm
Prb5
Probe 5 Fault
door
Door Open Alarm
Prb6
Probe 6 Fault
TrAP
Person Trapped Alarm
rEC
Control State in Recovery
PLnt
Plant Fault
dEF
Control Sate in Defrost
LgOt
Log Probe Over Temperature
AL
Control State in Alarm
LgUt
Log Probe Under Temperature