Resource Data Management PR0122-STA Operation manual

www.resourcedm.com
ML Multi Stage Thermostat
Installation & User Guide
Resource Data Management Ltd
80 Johnstone Avenue, Hillington Industrial Estate,
Glasgow, Scotland G52 4NZ UK
[phone] Switchboard
[e-mail] Technical Support
[e-mail] Sales Enquiries
For Products: - PR0710, PR0711, PR0720, PR0721
ML Thermostat
PR0122-STA
PR0123-STA

Revision 2.3 Page 2 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
Table of Contents:
Introduction........................................................................................................................................................3
Display................................................................................................................................................................3
Relay Modules....................................................................................................................................................4
Parameter Tables...............................................................................................................................................6
Setting-up...........................................................................................................................................................7
Viewing/Changing Menu Items.........................................................................................................................7
Menu Items ......................................................................................................................................................7
Inputs and outputs............................................................................................................................................8
Units....................................................................................................................................................................8
Disp..................................................................................................................................................................8
Type .................................................................................................................................................................8
RTC..................................................................................................................................................................8
Hub/Switch Type..............................................................................................................................................8
Network Configuration......................................................................................................................................9
Network Compatibility ......................................................................................................................................9
IP Communications..........................................................................................................................................9
485 Networks .................................................................................................................................................10
Operation:.........................................................................................................................................................12
Network Alarms ...............................................................................................................................................12
View I/O.............................................................................................................................................................13
Specification: ...................................................................................................................................................13
General: .........................................................................................................................................................13
Relays ...............................................................................................................................................................14
Inputs:...............................................................................................................................................................14
Part Numbers ...................................................................................................................................................14
REVISION HISTORY.........................................................................................................................................14

Revision 2.3 Page 3 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
Introduction
The ML Stat is a multi-stage thermostat with adjustable parameters, incorporating a fan relay with adjustable over-run time. The stat has
four stages which can be set-up for heating or cooling. There is an internal 7 day timer as well as the ability to set the stat for a remote
time function (Using the GP timer in a data manager) or manually on or off. The controller can be networked back to an RDM Data
Manager, see Network Configuration
The main features are: -
Display with decimal or whole numbers
Multi stage thermostat (4 stages, heating or cooling per stage)
2 x control probes (with control weighting)
2 x monitoring probes with optional alarms or 2 Plant fault inputs
Programmable parameters
Fan control relay with over-run feature
High volume Alarm buzzer Installation (Can be switched off)
RS232 output for IP Network connection
RS485 network version (Genus compatible)
Local or remote timer function
PT1000, NTC2K, NTC2k25 or 10K probes supported
Service interval timer
Degrees C and Degrees F incorporated in one controller
Display
LED’s: -
Cooling
Fans
Lights
Network
Off No network attached
Flashing Attempting to Log on to network
Steady On-line
Defrost
Service
HACCP
Alarm
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
Keys

Revision 2.3 Page 4 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
Relay Modules
The ML controller is supplied in two parts, a panel mount display / control unit and a relay / power supply module in a black ABS
enclosure. The two units are interconnected using the 5m lead supplied, the control unit derives it’s power from the relay module. All the
terminals for power, control relays, networking and temperature probes are contained within the relay module as shown below.
The ML controller can be used with a 230 Vac 50Hz or 110V 60Hz mains supply, the switched mains outputs for the relays are fed by the
relay module so only one mains supply needs to be connected.
5 Relay module with RS232 connector (for connection to an IP Network)
Connections:
NEUTRALS: Supply Neutral connections
LIVE: Supply Live connections
N/C: Relay normally closed contact
N/O: Relay normally open contact
All relays will output the supply voltage
Note. Earth is a functional earth, not a safety earth
!
Probe Common
Probe 4 / Plant 2
Probe 3 / Plant 1
Control Probe 2
Control Probe 1
Probe Common
Relay 1
Relay 2
Relay 3
Relay 4
Relay 5
170mm
70mm
75mm
75mm
70mm
133mm
149mm
Fixing Centre
Display
Connection
RS232 Comms.
Connector
Temperature
Probe Connector
1A Anti Surge
Fuse
Supply Neutral
Supply Earth
Supply Live
Functional Earth
Functional Earth
Note: Middle
connector not used.
Applies to all relays
Probe Connection Detail

Revision 2.3 Page 5 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
5 Relay module with RS485 connector (for connection to Genus compatible Network).
Connections:
NEUTRALS: Supply Neutral connections
LIVE: Supply Live connections
N/C: Relay normally closed contact
N/O: Relay normally open contact
Network Cable part number:*Belden 8723 or equivalent
All relays will output the supply voltage
Note. Earth is a functional earth, not a safety earth
170mm
70mm
75mm
75mm
70mm
133mm
149mm
Fixing Centre
Display
Connection
RS485 Comms.
Connector
Temperature
Probe Connector
1A Anti Surge
Fuse
Supply Neutral
Supply Earth
Supply Live
Functional Earth
Functional Earth
Note:
Middle connector not
used on all relays
Relay 1
Relay 2
Relay 3
Relay 4
Relay 5
Common (Green)
Data B –(Black)
Common (White)
Data A + (Red)
Screen
RS485 Connection Detail
!

Revision 2.3 Page 6 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
Parameter Tables
No.
Parameter
Range OC (OF)
Default
Units
Description
P-01
Fans Mode
0 = Local
1 = Remote
2 = Man Off
3 = Man On
Local
Sets the Fans. Note the thermostat is
switched off when the fans are off.
See : Remote GP Timer
P-02
Probe 3 Select
0 = Off
1 = Probe
2 = Probe with fault
3 = Probe with alarm
4 = Plant N/O
5 = Plant N/C
Off
Sets the function for input 3. If set to
“Plant” use a 0V return
P-03
Probe 4 Select
0 = Off
1 = Probe
2 = Probe with fault
3 = Probe with alarm
4 = Plant N/O
5 = Plant N/C
Off
Sets the function for input 3. If set to
“Plant” use a 0V return
P-04
Fans Run On
00:00 to 99:00
20:00
Mins:secs
Fans run-on for this period after the
timer goes off. Note: the thermostat is
off during this period.
P-11
Stat 1 Type
0 = Off
1 = Cooling
2 = Heating
Heating
Sets the thermostat stage function.
P-12
Stat 1 control weight
0 –100%
50
%
Weighting is biased to Probe 1
P-13
Stat 1 cut-in
--60 to +60 / -76 to 140
15 / 59
OC / OF
Heating relay is on below this set-
point. Cooling relay is off below this
set-point. *
P-14
Stat 1 diff
-60 to +60 / -76 to 140
1 / 1.8
OC / OF
Heating relay goes off above this set-
point. Cooling relay goes off below this
set-point.*
P-15
Stat 1 alarm delay
00:00 to 99:00
20:00
Mins:secs
Time delay before the alarm occurs.
P-16
Stat 1 OT alarm
-60 to +60 / -76 to 140
30 / 86
OC / OF
Over temperature alarm set-point
P-17
Stat 1 UT alarm
-60 to +60 / -76 to 140
-5 / 23
OC / OF
Under temperature alarm set-point
P-21
Stat 2 Type
0 = Off
1 = Cooling
2 = Heating
Heating
Sets the thermostat stage function.
P-22
Stat 2 control weight
0 –100%
50
%
Weighting is biased to Probe 1
P-23
Stat 2 cut-in
-60 to +60 / -76 to 140
18 / 64.4
OC / OF
Heating relay is on below this set-
point. Cooling relay is off below this
set-point. *
P-24
Stat 2 diff
-60 to +60 / -76 to 140
1 / 1.8
OC / OF
Heating relay goes off above this set-
point. Cooling relay goes off below this
set-point.*
P-25
Stat 2 alarm delay
00:00 to 99:00
20:00
Mins:secs
Time delay before the alarm occurs.
P-26
Stat 2 OT alarm
-60 to +60 / -76 to 140
30 / 86
OC / OF
Over temperature alarm set-point
P-27
Stat 2 UT alarm
-60 to +60 / -76 to 140
-5 / 23
OC / OF
Under temperature alarm set-point
P-31
Stat 3 Type
0 = Off
1 = Cooling
2 = Heating
Heating
Sets the thermostat stage function.
P-32
Stat 3 control weight
0 –100%
50
%
Weighting is biased to Probe 1
P-33
Stat 3 cut-in
-60 to +60 / -76 to 140
20 / 68
OC / OF
Heating relay is on below this set-
point. Cooling relay is off below this
set-point.*
P-34
Stat 3 diff
-60 to +60 / -76 to 140
1 / 1.8
OC / OF
Heating relay goes off above this set-
point. Cooling relay goes off below this
set-point.*
P-35
Stat 3 alarm delay
00:00 to 99:00
20:00
Mins:secs
Time delay before the alarm occurs.
P-36
Stat 3 OT alarm
-60 to +60 / -76 to 140
30 / 86
OC / OF
Over temperature alarm set-point
P-37
Stat 3 UT alarm
-60 to +60 / -76 to 140
-5 / 23
OC / OF
Under temperature alarm set-point
P-41
Stat 4 Type
0 = Off
1 = Cooling
2 = Heating
Heating
Sets the thermostat stage function.
P-42
Stat 4 control weight
0 –100%
50
%
Weighting is biased to Probe 1
P-43
Stat 4 cut-in
-60 to +60 / -76 to 140
22 / 71.6
OC / OF
Heating relay is on below this set-
point. Cooling relay is off below this
set-point.*
P-44
Stat 4 diff
-60 to +60 / -76 to 140
1 / 1.8
OC / OF
Heating relay goes off above this set-
point. Cooling relay goes off below this
set-point.*

Revision 2.3 Page 7 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
P-45
Stat 4 alarm delay
00:00 to 99:00
20:00
Mins:secs
Time delay before the alarm occurs.
P-46
Stat 4 OT alarm
-60 to +60 / -76 to 140
30 / 86
OC / OF
Over temperature alarm set-point
P-47
Stat 4 UT alarm
-60 to +60 / -76 to 140
-5 / 23
OC / OF
Under temperature alarm set-point
P-51
Alarm Duration
00:00 to 61:00
00:00
Mins:secs
Note: 00:00 sets the buzzer to off;
61:00 sets the buzzer to continuous
until muted.
P-52
Service Interval
0 to 128
60
Khours
Sets the service interval (hours x
1000) set to 0 to clear the interval
warning. (spanner icon on the
controller screen)
P-53
Log alarm delay
00:00 to 99:00
20:00
Mins:secs
Time delay before the alarm occurs.
P-54
Log UT alarm
-60 to +60 / -76 to 140
-5 / 23
OC / OF
Monitor Under temperature alarm set-
point
P-55
Log OT alarm
-60 to +60 / -76 to 140
30 /86
OC / OF
Monitor Over temperature alarm set-
point
P-61
Sunday Fans On Time
00:00 –23:59
08:00
hrs:mins
Sunday On Time
P-62
Sunday Fans Off Time
00:00 –23:59
20:00
hrs:mins
Sunday Off Time
P-63
Monday Fans On Time
00:00 –23:59
08:00
hrs:mins
Monday On Time
P-64
Monday Fans Off Time
00:00 –23:59
20:00
hrs:mins
Monday Off Time
P-65
Tuesday Fans On Time
00:00 –23:59
08:00
hrs:mins
Tuesday On Time
P-66
Tuesday Fans Off Time
00:00 –23:59
20:00
hrs:mins
Tuesday Off Time
P-67
Wednesday Fans On Time
00:00 –23:59
08:00
hrs:mins
Wednesday On Time
P-68
Wednesday Fans Off Time
00:00 –23:59
20:00
hrs:mins
Wednesday Off Time
P-69
Thursday Fans On Time
00:00 –23:59
08:00
hrs:mins
Thursday On Time
P-70
Thursday Fans Off Time
00:00 –23:59
20:00
hrs:mins
Thursday Off Time
P-71
Friday Fans On Time
00:00 –23:59
08:00
hrs:mins
Friday On Time
P-72
Friday Fans Off Time
00:00 –23:59
20:00
hrs:mins
Friday Off Time
P-73
Saturday Fans On Time
00:00 –23:59
08:00
hrs:mins
Saturday On Time
P-74
Saturday Fans Off Time
00:00 –23:59
20:00
hrs:mins
Saturday Off Time
Dflt
Sets all parameters to their default
value
Setting-up
Access to the controller settings can be achieved several ways,
Through the display mounted buttons
Direct access by PC into the RS232 comms. port. This requires a software package available on the RDM website
Through the RDM Data Manager.
Across an IP network. (Current controller IP address required)
Viewing/Changing Menu Items
1. Press and hold "ENT" and "DOWN" for approx 3 seconds the display will read "EnT"
2. Press and release "ENT", the display will indicate "IO" This is the inputs and outputs viewing option
3. Use the "UP" or "DOWN" keys to cycle round the menu items, press enter at the desired item.
. Example: pressing enter at “PARA” will allow you to view or change parameters
Note. If menu item "ESC" is entered the controller will escape the set up and revert to normal operation
Menu Items
IO
Displays the inputs and outputs
Inputs and Outputs
PArA
View and change parameters
Set view parameters
Unit
Change the Units (Probe Tpe)
Set view units
diSP
Change the display
Display
tyPE
View Controller type
Type
Id
Enter an ID (For IP-L Use)
Set view ID
Rtc
Real Time Clock
Real Time Clock
Net
Change the network settings
Network Configuration
hub
Selects Hub/Switch (Mercury or ML)
Hub/Switch Type
SoFt
View the software version
OFSt
Probe Offsets
Probe Offset
ESC
Escape back to normal operation

Revision 2.3 Page 8 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
Inputs and outputs
Selecting this menu option allows the user to view the inputs and outputs. Use the up/down button to select the desired input or output
and then press “Enter”. The value will be shown on the display. See View IO
Units
Use this to select the temperature probe type.
0 = PT1000 (Deg C)
1 = PT1000 (Deg F)
2 = NTC2K (Deg C) (Default)
3 = NTC2K (Deg F)
4 = NTC2K25 (Deg C)
5 = NTC2K25 (Deg F)
6 = NTC10K (Deg C)
7 = NTC10K (Deg F)
Disp
Display setting: -
0 = Decimal display (1 place)
1 = Integer Display
Type
The controller has only one type so cannot be changed.
Relay Assignment
Relay 1 Fans Use N/O contact
Relay 2 Thermostat Stage 1 Use N/O contact
Relay 3 Thermostat Stage 2 Use N/O contact
Relay 4 Thermostat Stage 3 Use N/O contact
Relay 5 Thermostat Stage 4 Use N/O contact
ID
Sets the controller ID, (normally used in conjunction with the IP-L network mode). Set a number in the range of 1 –999
RTC
Real time clock (This will automatically synchronise on network systems)
a. Use the up or down buttons to scroll through the display until the display reads “rtc”
b. Press enter. The display will show “t-1”. press enter again
c. Scroll hours up or down (0 –23) press enter
d. Use up button to select “t-2”, press enter
e. Scroll minutes up or down (0 –59) press enter
f. Repeat for t-3 (seconds 0 –59)
g. Repeat for t -4 (Days up to 31)
h. Repeat for t -5 (months up to 12)
i. Repeat for t -6 (Year up to 99)
j. Use up button to display “ESC”, press enter to display “rtc”.
Hub/Switch Type
Select the desired value for the type of communication module in use.
0 = Mercury Hub/Switch
1 = ML Hub/Switch

Revision 2.3 Page 9 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
Network Configuration
Network Compatibility
To log the controller onto a network you must first connect the controller to a suitable IP comms module.
Description
Part Number
IP Futura (Single Mercury to IP Interface)
PR0016
Mercury IP Switch (IP support for 10 controllers)
PR0018
Mercury IP Switch with Pressure/Humidity Inputs
PR0018-PHI
ML IP Comms module (Single ML to IP Interface)
PR0108*
ML IP Switch (IP support for 10 controllers)
PR0109*
Mercury IP Switch with Pressure/Humidity Inputs
PR0109-PHI*
When logging the ML controller on to a Data Manager then one of the above communication modules should be used. The ML range of
IP communication modules will soon be obsolete with only spares being made available for replacement purposes. For a limited number
of software versions the ability to communicate with both the Mercury and ML communication modules has been included in the ML
controller software. This revised software will provide compatibility for both ranges for a short time only. Later versions of software will
communicate with Mercury communication modules only. The version of ML controller software which communicates with both Mercury
and ML communication modules is shown below:
* Note: software version of the ML IP Module has to be V1.4 or higher. Software versions older than V1.4 are not supported with the
revised ML hardware platform.
The ML controller has to be set depending on the type of communication module in use. See Hub/Switch Type for further details.
Network Settings
IP Communications
There are 2 ways the ML controller can be used with an IP Ethernet network: -
1. IP-R Remote IP address given by the Data Manager (DHCP Server)
2. IP-L Local IP address and gateway is set up in the controller.
IP-R
To use the ML controller in IP-R mode, you will require either a PR0016 Mercury IP Module or PR0018 Mercury Hub. When either of
these two devices are used, the rotary switches be given a unique setting. Setting 000 must be avoided for IP-R mode.
Once the comms module has been set up and connected to the controller and Data Manager, it will automatically log-on. Once it is
online, the IP address given to the controller can be viewed by pressing enter at the “NET” display. Press enter at any one of the sub-
menu option to read the value
IP1 = IP address field 1
IP2 = IP address field 2
IP3 = IP address field 3
IP4 = IP address field 4
Part Number
Description
Controller Software Version and IP Communication Compatibility
PR0123
V2.0–V2.3
PR0123-TWI
V2.0–V2.1
PR0123-STA
V2.0–V2.1
PR0123
V2.4 &
Above
PR0123-TWI
V2.2 & Above
PR0123-STA
V2.2 & Above
PR0108
ML IP Module*



x
X
x
PR0109
ML Hub*



x
x
x
PR0109-PHI
ML Hub PHI*



x
x
x
PR0016
IP Futura






PR0018
Mercury Hub






PR0018-PHI
Mercury Hub PHI







Revision 2.3 Page 10 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
IP-L
To use the ML controller in IP-L mode, you will require either a PR0016 Mercury IP Module or PR0018 Mercury Hub.
The rotary switches must be set to 000 on the comms module or 00 on the Hub
In this mode the IP address and gateway address must be set up manually in the controller.
Use the following table as a guide: -
Display
Option
IP1
IP Address byte 1
IP2
IP Address byte 2
IP3
IP Address byte 3
IP4
IP Address byte 4
nL
Network Mask Length (see table below)
GT1
Gateway Address byte 1
GT2
Gateway Address byte 2
GT3
Gateway Address byte 3
GT4
Gateway Address byte 4
ESC
Exit network menu. N.B. this option must be selected to save
any changes made in this menu
Setting nL
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
The network led will start flashing as the controller is logging on to the network; once logged on, the LED stays on.
485 Networks
RS485 Relay Board will support the following protocol :-
Genus
Use the controller menu options to set-up the network; press enter at the “net” screen, then choose from the following network set-up
screens:
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

Revision 2.3 Page 11 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
485T Genus/Third Party Compatible
The 485t option shows a value representing the network type. The possible values are:
Value
Network Type
1
Genus compatible (all versions)
2
Not Used in this version
3
Not Used in this version
Genus Compatible
485A Genus
The 485A option shows a value representing either the name of the controller in a Genus compatible network.
The value shown is of the form 05-6. This means the controller would try to log onto a Genus compatible network using the name ‘RC05-
6’.
Once the address has been entered, use the net menu items to go to the “Esc” screen and press enter. This registers the network
address into the controller and the controller will log on at this point.
Gadd
The gAdd option displays (in hexadecimal format) the underlying network address assigned to the controller when it is logged onto the
network.
RLog
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.
ClrA
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
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.
SoFt (Software version)
Press “Enter” at this display to show the software version.
OFSt
Probe offsets: - select a channel (1 - 4) and select an offset +/- 20OC (68OF)
ESC
Press enter at this display to quit out of the menu.

Revision 2.3 Page 12 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
Operation:
The stat has 4 relays which have their own set-points, diff and alarm settings. Each can be set-up as either a heating stage or a cooling
stage. When set as a heating stage, the diff acts above the set-point; when set to cooling, the diff acts below the set-point.
The thermostat function will not operate unless the fans are running.
Fans can be set to manually on, off, on through a 7 day internal timer (local) or through a GP timer in a Data Manager/Director front panel
(remote).
When the timer period goes off, the thermostat function will stop, but the fans can have a run-on period (P-04) which will keep the fans
running until the run-on period expires.
Network Alarms
Alarm text
Type # (index)
Over Temperature
4
Under Temperature
5
Log Over Temperature
8
Log Under Temperature
9
Probe 1 Fault
6
Probe 2 Fault
6
Probe 3 Fault
6
Probe 4 Fault
6
Plant Fault 1
3
Plant Fault 2
3
ON OFF ON
ON OFF ON
OFF ON OFF
OFF ON OFF
Cooling 2 Setpoint
Cooling 2 Diff (Below)
Heating 2 Setpoint
Heating 2 Diff (Above)
Cooling 1 Setpoint
Cooling 1 Diff (Below)
Heating 1 Diff (Above)
Heating 1 Setpoint
Heating 1 Relay
Heating 2 Relay
Cooling 1 Relay
Cooling 2 Relay

Revision 2.3 Page 13 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
View I/O
Press “Enter” in the menu at “IO” to view the inputs and outputs.
Specification:
General:
Supply Voltage Range:
90 - 270 Vac 10%
Controller only
Supply Frequency
50 - 60 Hz 10%
Maximum Supply Current
55A
With relays 1 to 5 fully loaded
Typical Supply Current
<1A
With relays 1 to 5 off load
Supply Fuse
1Amp anti-surge 20 x 5mm
Operating temperature range
+5oC to 50 oC
Storage temperature
-20oC to 65oC
Operating Humidity
80% maximum
Environmental
Indoor use at altitudes up to 2000m, Pollution
Degree 1
Installation Category II.
Voltage fluctuations not to exceed ±10% of
nominal voltage
Controller Size
79mm x 37mm x 73mm WxHxD
Panel Cut-out for Controller
72mm x 29mm
Relay Board Size
170mm x 130mm x 50mm LxWxH
Maximum Weight (combined)
1.25kg
Safety (Relay Board)
Class II LVD
This product is double insulated when
used with the original enclosure
Safety (Controller)
Class II LVD
Only use the cable provided to connect
the controller to the relay board.
EMC
EN61326; 1997 +Amdt. A1; 1998
Ventilation
No requirement for forced ventilation
Insulation
Class I for Relay board
Class II for controller
Number
I/O
Range (dependant on probe type)
Step
Units
I-01
Probe 1
-60 to +60 / -76 to 140
0.1
Deg
I-02
Probe 2
-60 to +60 / -76 to 140
0.1
Deg
I-03
Probe 3
-60 to +60 / -76 to 140
0.1
Deg
I-04
Probe 4
-60 to +60 / -76 to 140
0.1
Deg
I-05
Plant 1
0 = Unused, 1 = OK, 2 = Alarm
I-06
Plant 2
0 = Unused, 1 = OK, 2 = Alarm
I-11
Stat 1 Temp
-60 to +60 / -76 to 140
0.1
Deg
I-12
Stat 2 Temp
-60 to +60 / -76 to 140
0.1
Deg
I-13
Stat 3 Temp
-60 to +60 / -76 to 140
0.1
Deg
I-14
Stat 4 Temp
-60 to +60 / -76 to 140
0.1
Deg
O-01
Fans Relay
0 = Off, 1 = On
O-02
Stat 1 Relay
0 = Off, 1 = On
O-03
Stat 2 Relay
0 = Off, 1 = On
O-04
Stat 3 Relay
0 = Off, 1 = On
O-05
Stat 4 Relay
0 = Off, 1 = On
O-10
Run Time
0 to 128
Hours x 1000
O-11
Fan Control
0 = Off, 1 = On

Revision 2.3 Page 14 of 14
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
ML Multistage Thermostat Installation Guide
www.resourcedm.com
Relays
IMPORTANT: Some early versions of Relay modules had relays fitted in position 1 that had a lower N/O contact rating (0.5 HP) Look at
the label on the enclosure lid for the correct Relay rating.
Relay 1 Fans N/O contact 230 Vac/16A Resistive Load
N/O contact 230 Vac/(2HP) Motor Load
N/C contact 230 Vac/10A Resistive Load
N/C contact 230 Vac/1/2HP) Motor Load
Relays 2 - 5 N/C contact 230 Vac/10A Resistive Load
N/C contact 30 Vac/3A Inductive Load CosФ=0.4
N/O contact 230 Vac/10A Resistive Load
N/O contact 30 Vac/3A Inductive Load CosФ=0.4
Damage to relays through out of specification usage will invalidate the warranty.
Inputs:
Input 1 Thermistor probe
Input 2 Thermistor probe
Input 3 Thermistor probe or 0V return
Input 4 Thermistor probe or 0V return
Part Numbers
ML Stat Controller, 5 Relay, RS485 Comms and Screw Terminals: PR0122-STA
ML Stat Controller, 5 Relay, RS485 Comms and Screw Terminals: (100 Units): PR0122-STA-100
ML Stat Controller, 5 Relay, RS485 Comms and Screw Terminals: (10 Units): PR0122-STA-10
ML Stat Controller, 5 Relay, RS232 for IP Comms and Screw Terminals: PR0123-STA
ML Stat Controller, 5 Relay, RS232 for IP Comms and Screw Terminals: (100 Units): PR0123-STA-100
ML Stat Controller, 5 Relay, RS232 for IP Comms and Screw Terminals: (10 Units): PR0123-STA-10
Revision History
Revision
Date
Changes
V2.3
20/06/2011
New layout and diagrams