Resource Data Management PR0109 User manual

www.resourcedm.com
PR0109
PR0109-PHI
ML Switch 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

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ML Switch User Guide
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
Table of Contents:
ML SWITCH ........................................................................................................................................................3
Description.........................................................................................................................................................3
Front View ..........................................................................................................................................................3
Rear View............................................................................................................................................................3
Top View.............................................................................................................................................................4
Connection to ML Controllers:.........................................................................................................................4
Network Configuration .....................................................................................................................................4
Network Compatibility ......................................................................................................................................4
RS232 Lead Lengths .......................................................................................................................................5
Connection to other IP equipment...................................................................................................................5
Connection to another ML Hub/Switch or Other Ethernet Hub/switch........................................................5
Connection to a Data Manager/Director..........................................................................................................5
10/100 Base T connectors ................................................................................................................................5
Network ID..........................................................................................................................................................5
PR0109-PHI USER GUIDE.................................................................................................................................6
ML Switch Type..................................................................................................................................................6
Parameters .........................................................................................................................................................8
Parameters Description: ..................................................................................................................................9
Input/Output table...........................................................................................................................................10
EEV Control Operation....................................................................................................................................11
Transducer Connection..................................................................................................................................11
MOP - Maximum Operating Pressure............................................................................................................11
Humidity Control Operation ...........................................................................................................................12
GP Timer Set-up............................................................................................................................................12
Trim Heater Control via ML Case Controller Range.....................................................................................12
Front Panel Features (PR0445) ......................................................................................................................13
Setting up the ML Switch via the Display .....................................................................................................13
Recommended set-up method.......................................................................................................................14
Set/View Type................................................................................................................................................14
Set/View Parameters (This can be achieved at the network front end).........................................................15
ID....................................................................................................................................................................15
Network Configuration....................................................................................................................................15
IP-L (Local IP Address) ..............................................................................................................................15
IP-r (IP Address issued by the DHCP server)............................................................................................16
SPECIFICATION...............................................................................................................................................17
Power requirements:.......................................................................................................................................17
Mounting...........................................................................................................................................................17
RS232 Cable Lengths......................................................................................................................................17
Ethernet Cable lengths ...................................................................................................................................17
Disclaimer.........................................................................................................................................................17
REVISION HISTORY.........................................................................................................................................17

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ML Switch User Guide
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 Switch
From Resource Data Management
Description
The ML Switch (PR0109) is a device that allows up to 10 RDM ML controllers to be connected to an IP network, without the need for
individual IP ML modules. There are 10 RS232 connections for linking to 10 ML controllers. There are 3 standard Ethernet Switch
(10/100baseT) connections for other network devices. The Ethernet ports are self configuring for uplinks and standard 10/100 Base T
device connections.
As well as the Switch function there is a 4-20mA input for additional applications such as Island EEV control. Island trim heater control
can be achieved through the display port using a humidity temperature display (PR0445). To utilise either of these features then the
PR0109-PHI option would be required.
Front View
Rear View
Note:- The display port, mA input and mA input selector are fitted on the PR0109-PHI only.
10 x RS232 Ports for direct connection to RDM controllers
Mains connector
3 x IP ports
mA Input
Display port
mA input selector

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ML Switch User Guide
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
Top View
Connection to ML Controllers:
Network Configuration
Network Compatibility
New ML Switch and IP Modules will be labeled identifying software version.
New ML Controllers will not log on to network using pre 1.2 versions of ML Switch and IP Modules.
Controllers with the following label will only log on to network using ML Switch or ML IP Module with software version 1.2 or higher.
ML Switch or ML IP Module with software version 1.2 will have the following label.
All versions of ML controllers will log on with ML Switch and IP Module with software version 1.2 or higher.
Using a standard CAT5 patch lead, connect the serial output of the RDM Controller to one of the RS232 ports of the ML Switch.

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ML Switch User Guide
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
RS232 Lead Lengths
RS232 patch lead maximum length must not exceed 15 metres. (Ports 1 - 10)
The 3-character address that will be seen on the system front end is determined by the position of the two Network ID rotary switches
and the port the controller has been connected to, unless the connected controller has its own network ID rotary switches, in which case
the controller ID will override the switch settings.
Connection to other IP equipment
Use a standard CAT5 patch lead to connect other IP equipment to the ML Switch (such as a Futura IP module) into the 10/100 Base T
ports 1, 2 or 3.
Connection to another ML Hub/Switch or Other Ethernet Hub/switch
Use a standard CAT5 patch lead from any of the three 10/100 Base T ports into any of the three 10/100 Base T ports on the upstream
ML Switch. The three 10/100 Base T ports are all self configuring.
Connection to a Data Manager/Director
Use a standard CAT5 patch lead and connect the Data Manager or Data Director to one of the three 10 Base T ports.
10/100 Base T connectors
The three 10/100 Base T connectors have 2 LED’s adjacent to them: The green LED; when static, indicates that the connection to the
device is good, the green LED then flickers when data is being transmitted.
When the amber LED is permanently on it indicates that the connection is full duplex and if there is an error or fault on that channel the
LED flickers.
Network ID
The 3-character network ID is made up from the positions of the 2 rotary switches and the RS232 connector number. We recommend
that the 2 rotary switches are set to the Bay number and that the case sections are plugged into their corresponding RS232 port
numbers.
E.g. Bay 10 case 2:
The 2 rotary switches set to "1" and "0", controller plugged into port 2. The ID then is seen as "102" at the system front end.
Note that case number 10 would plug into RS232 port 0 (right most port) and come through as "100.
1
9
0
1
9
0
NETWORK ID 1 2 3
Vdc
1 2 3 4 5 6 7 8 9 0
Controller
at position 2

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ML Switch User Guide
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
PR0109-PHI user guide
The PR0109-PHI hardware version of the ML Switch allows for EEV control on an island by island basis. It also allows for the use of the
energy feature trim control which pulses the trim relay of a ML case controller based on the actual shop floor humidity therefore
minimising energy usage.
Island EEV Control Application
Product PR0109-PHI is intended for EEV control on an Island by island basis. A suction pressure transducer is connected to the 4-20mA
input 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 ML Switch and along with the suction temperature probe local to the
controller the superheat is calculated.
Unlike the PR0109 (Standard ML Switch version) when this product is used with a Data Manager it is registered on the system as a
device. Once the ML Switch is on-line, the Switch type and parameters can be set up.
The switch comes online with the ID of the 2 rotary switch settings followed by the letter a. For example with the first rotary switch set to 4
and the second switch set to 8 then the switch would appear as device “48a”.
ML Switch Type
There are 4 types: -
Type
Description
1
Degree C/ Bar
2
Degree C/ PSI
3
Degree F/ Bar
4
Degree F/ PSI
The ML Switch type can be set by navigating to the ML Switch WebPages. This can be achieved by using the Controller Info page in the
Data Manager. Find the IP address assigned to the ML Switch in question from the list. Now connect a laptop onto the IP network on
which the ML Switch is connected. Using a web browser navigate to the IP address of the ML Switch. The homepage of the ML Switch is
shown below:-

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ML Switch User Guide
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
Click on “Configure” to set the type: -
Then click “Type”
Use the drop-down selection to select the type required and then click “Set Type”
Parameters can be configured using the connection as illustrated above or through the ML Display, if fitted, or via the normal Data
Manager change parameter routes.

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ML Switch User Guide
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
Parameters
Number
Parameter
Range Bar (psi)
Step
Units
Default Bar (psi)
P-01
Refrigerant
None
R12
R13
R13b1
R22
R23
R32
R114
R134a
R142B
R227
R401
R401A
R401B
R402
R402A
R402B
R404A
R407A
R407B
R407C
R500
R502
R503
R507
R717
R290 (Propane)
R744
N/A
None
P-02
Span
-3.4 to 50.0 (-49.3 to 725)
0.1
Bar/psi
13.8 (200.0)
P-03
Offset
-3.4 to 50.0 (-49.3 to 725)
0.1
Bar/psi
0.0 ( 0.0)
P-04
Glide
0 to 5 (9.0)
0.1
oC (oF)
0.0
P-05
Pressure Type
Absolute / Gauge
Absolute
P-11
Evap 1 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-12
Evap 2 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-13
Evap 3 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-14
Evap 4 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-15
Evap 5 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-16
Evap 6 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-17
Evap 7 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-18
Evap 8 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-19
Evap 9 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-20
Evap 10 offset
0.0 to 0.5 (0 to 7.2)
0.1
Bar/psi
0.1 (1.0)
P-31
Transducer Fault Delay
00:00 to 99:00
01:00
Mins
10:00
P-32
Alarm Delay
00:00 to 99:00
01:00
Mins
20:00
P-33
HP Alarm
-3.4 to 50.0 (-49.3 to 725)
0.1
Bar/psi
4.0 (58.0)
P-40
MOP
-3.4 to 50.0 (-49.3 to 725)
0.1
Bar/psi
3.4 (50.0)
P-41
MOP Diff
-3.4 to 50.0 (-49.3 to 725)
0.1
Bar/psi
0.3 (5.0)
P-42
Recovery Count
0 –10
1
2
P-43
MOP Delay
00:00 to 02:00
00:01
min : sec
00:05
P-50
Humidity Low
0-100
1
rH
20
P-51
Humidity High
0-100
1
rH
60
P-52
Trim Low
0-100
1
%
30
P-53
Trim High
0-100
1
%
100
P-54
Trim Off Level
0-100
1
%
30
P-55
Trim Mode
0 =Off, 1 =On, 2 =Remote
On

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ML Switch User Guide
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
Parameters Description:
Number
Parameter
Description
P-01
Refrigerant
Select the gas type used within the refrigeration system.
P-02
Span
Total range of transducer*
P-03
Offset
Value below zero*
P-04
Glide
Glide characteristic (Offset to Evap Temperature)
P-05
Pressure Type
Select between Absolute or Gauge pressure
P-11
Evap 1 offset
Pressure difference between suction transducer and evaporator 1
P-12
Evap 2 offset
Pressure difference between suction transducer and evaporator 2
P-13
Evap 3 offset
Pressure difference between suction transducer and evaporator 3
P-14
Evap 4 offset
Pressure difference between suction transducer and evaporator 4
P-15
Evap 5 offset
Pressure difference between suction transducer and evaporator 5
P-16
Evap 6 offset
Pressure difference between suction transducer and evaporator 6
P-17
Evap 7 offset
Pressure difference between suction transducer and evaporator 7
P-18
Evap 8 offset
Pressure difference between suction transducer and evaporator 8
P-19
Evap 9 offset
Pressure difference between suction transducer and evaporator 9
P-20
Evap 10 offset
Pressure difference between suction transducer and evaporator 10
P-31
Transducer Fault Delay
Alarm generated, once transducer fault delay expires, if the transducer fails.
P-32
Alarm Delay
Delay before the HP alarm is generated.
P-33
HP Alarm
If the pressure exceeds this value then a High Pressure alarm is generated once the alarm
delay expires.
P-40
MOP
If the pressure exceeds this value the valves on controllers connected to the ML Switch will
closed or be reduced to a predetermined percentage. A MOP alarm is also created. (See MOP)
P-41
MOP Diff
When the pressure reduces below this value valves on controllers connected to the Switch will
recover to their normal operational
P-42
Recovery Count
When the Switch comes out of MOP, the valves will come on at 1 minute intervals and turn
“this” number of valves on per minute.
P-43
MOP Delay
Delay after the MOP value has been exceeded before the MOP actions and alarm occurs.
P-50
Humidity Low
Sets humidity low level.
P-51
Humidity High
Sets humidity high level.
P-52
Trim Low
Sets trim low level.
P-53
Trim High
Sets trim high level.
P-54
Trim Off Level
When the timer is in the off period the trims will be pulsed at this value. Note if the humidity
sensor fails the trim relays will be pulsed at this level.
P-55
Trim Mode
Off –Pulses the controller trim relays at the Trim Off Level.
On - trim control feature will continuously pulse the controller trim relays dependant
on the measured humidity.
Re mote –Uses Data Manager GP Timer channel to determine when to control. See
GP Timer Setup
* Span and Offset allows for the full range of the transducer to be used by the ML Switch.
Span is the full range of the transducer
Offset is the value below zero.
E.g. Danfoss AKS 33 with range: -1 bar to 12 bar
Span would be 190 (13 bar)
Offset would be -15 (-1 bar)

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ML Switch User Guide
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
Input/Output table
Number
IO
Range
Units Bar (psi) / oC (oF)
I-01
Evap Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-02
Evap 1 Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-03
Evap 2 Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-04
Evap 3 Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-05
Evap 4 Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-06
Evap 5 Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-07
Evap 6 Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-08
Evap 7 Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-09
Evap 8 Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-10
Evap 9 Press
--3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-11
Evap 10 Press
-3.4 to 50 (-49.3 to 725.0)
Bar (psi)
I-12
Humidity
0 to 100
rH
I-13
Sensor Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-01
Evap Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-02
Evap 1 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-03
Evap 2 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-04
Evap 3 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-05
Evap 4 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-06
Evap 5 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-07
Evap 6 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-08
Evap 7 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-09
Evap 8 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-10
Evap 9 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-11
Evap 10 Temp
-60 to 60 ( -76.0 to 140.0)
oC (oF)
O-21
MOP
Off ( 0 ) or On (1)
O-31
Trim Level
0 to 100 %
%
O-32
Remote Trim
Off ( 0 ) or On (1)

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ML Switch User Guide
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
EEV Control Operation
Ensure the transducer is correctly connected and the jumper is in the Pressure position.
Once the Switch has been correctly setup, it will pass values to each of the controllers connected to ports 1 through 10. In an EEV
application the evaporator in temperature probe reading for a case controller can be obtained from the ML Switch on which the controller
is connected. A suction pressure transducer is connected from the case Island to the 4-20mA input of the ML 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 see the ML Case controller user document from the RDM website for further details. (P-15 Minimum valve opening) We
recommend that this parameter be set to 0% when using ML Pressure Hub to calculate Superheat. Please note that RDM recommended
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 ML Switch. The ML Case controllers require to have P14 (Evaporator control) set to 1 (Remote) for this feature to function
correctly.
Transducer Connection
MOP - Maximum Operating Pressure
When the MOP alarm is created a valve off command is sent to the ML controllers connected to the ML Switch. The percentage that the
valve shuts down to is dependent on the “Div Value” parameter in the ML case controller. When the ML Switch generates the MOP alarm
the controller reduces the maximum valve opening to this percentage. For example if the Div Value” parameter is set to 50% and the
MOP alarm is generated then the maximum valve opening will be limited to 50%. Therefore as the controller pulses the valve the
maximum the valve will open to is 50%.
If ML controllers are connected to the Switch then the LLV will be closed when the MOP alarm is created and return to normal operation
when the alarm clears. When the pressure reduces below the MOP diff the valves will revert to normal operation at 1 minute intervals.
The number of controller coming back to normal operation per minute depends on the “recovery count” value.
+12V loop feed
mA loop return
mA input selector

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ML Switch User Guide
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
Humidity Control Operation
To utilise this feature a Humidity/Temperature Display is required (PR0445). Connect the Humidity/temperature display to the display port
on the ML Switch. The control algorithm will use the humidity reading from the display in calculating the percentage at which the trim
relays are to be pulsed.
When the measured rH is below the “Humidity Low” parameter the ML Switch will pulse the ML case controller trim relays to the duration
set by the “Trim Low” parameter. When the measured rH is above the “Humidity Low” parameter but below the “Humidity High”
parameter the ML Switch will pulse the ML case controller trim relays in proportion to the line drawn between the low and high levels.
When rH goes above the “Humidity High” level the ML Switch will pulse the ML case controller trim relays at the “Trim High” setting.
Setting the trim high parameter to 70% will result in 30 % energy savings as the controller trim relays will never pulse on for more than
70%. The trims are pulsed over a 5 minute period. Therefore if the ML Switch calculates the trim percentage as 50% then the trim relay
will be on for 2 and a half minutes and then off for 2 and a half minutes.
GP Timer Set-up
It is possible to set the ML Switch humidity control to operate at specific times. For this operation to occur set the parameter “Trim Mode”
to “Remote”. A GP Timer channel must be set up to control the timer on/off periods of the ML Switch. For GP Timer set up please refer to
the Data Manager user guide found on the RDM website. The following settings should be followed in the GP setup.
Output Type –This should be set to “General”.
Output Mask –This should match the “Controller Name” e.g. “45a”
Output Channel –Set to “13”. This will allow the GP Timer to control the state of the timer.
When the parameter “Trim Mode” is set to “Remote” and the Data Manager GP timer channel directed to the ML Switch is in the on
period the humidity control will operate as described above. During the Data Manager GP timer channel off period the relay will pulse to
the preset “Trim Off Level ” parameter. For example if the trim off level is zero then the trims will be completely off. Thus allowing the user
to save energy when the store isn’t trading and the trims are not required.
Note if you wish the ML controller trim relay to follow the Data Manager Trim Control feature and not the ML Switch settings then please
see the ML Controller user document.( Dependant on configuration parameter P-06 , P-07 and P-08 set to trims).
Trim Heater Control via ML Case Controller Range
Energy savings via the ML controller range can be achieved in a number of ways. One of which is pulsing the trim heater relay off for a
given period of time. One way to pulse the trim heater relay in the ML case controller range is by setting the parameter “Trim Level”. This
sets a percentage level, of a 5-minute period, to pulse the trim heater relay off/on. Using this parameter pulses the trim relay irrespective
of the actual shop floor humidity. For greater energy savings the Data Manager energy feature trim control or the ML Switch trim control
feature can be used. These two options pulse the trim relay dependant on the actual shop floor humidity levels. Thus if the shop floor
humidity is relatively low the trim heaters can be pulsed off for longer durations. Please see the relevant user guides for further details.
RDM recommend that the trim heater pulse module is used in all instances (PR0723). This module is fitted in between the trim heater of
the case and the relay output of the ML Controller which is pulsing the heater. The trim heater module output provides a smoother power
distribution, compared to using the relay output direct, as it switches at the zero voltage crossover point. Switching the trim heater on and
off via a normal relay, without using the RDM trim heater pulse module, may damage the trim heater and reduce the operational life of
the heater. Therefore RDM recommend the use of this module in every trim heater control application.
Humidity
Low
Humidity
High

Revision 1.2D Page 13 of 17
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ML Switch User Guide
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
Front Panel Features (PR0445)
4 Character LCD
Down Button
Enter Button
# Button Up Button
Display:
The display fits a standard UK single socket pattress.
Enter Button:
Button used to enter/confirm values after a change.
Up Button:
When in the software menu, the up button is used to scroll up through the menu items.
Down Button:
When in the software menu, the down button is used to scroll down through the menu items
# Button:
No function
Network LED:
Green LED used to indicate network Status:
Off No network attached
Flashing Attempting to Log on to network
Steady On-line
Amber LED:
No function
Alarm LED:
Red LED used to indicate an alarm status.
Setting up the ML Switch via the Display
Access to configure the ML Switch can be achieved by 3 ways.
Through the front mounted buttons on the display
Through the RDM Data Manager
Across an IP network

Revision 1.2D Page 14 of 17
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ML Switch User Guide
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
Setup Mode
Setup through front buttons
To enter the software menu for setup mode, hold the Enter and Down buttons together for approximately 3 seconds until the message
“Ent” appears on the display. Release both buttons and now press the Enter button again to enter the software menu. IO is the first item
to be displayed. Scroll up or down to go through the menu items which are highlighted below.
Setup Function Menu
Display
Option
Explained in
Paragraph
IO
View Input and Output States
IO
PArA
View or change Parameters
PArA
ID
View or change ID
ID
tyPE
View or change Controller Type
type
nEt
View or change the Network Settings
Net
SoFt
View the Software version
ESC
Escape the menu
Recommended set-up method
Firstly configure the ML Switch Type. The Type can be set from the display or by viewing the webpage’s directly via its IP address; The
Type cannot be set from the Data Manager. The next stage is to network the ML Switch. Once complete configure the desired
Parameters for the ML Switch.
Set/View Type
a. From the function menu scroll to select type and press enter
b. The current type is shown. Use the up/down buttons to scroll through the configuration types.
c. Select the desired number and press enter.
There are 4 types: -
Type
Description
1
Degree C/ Bar
2
Degree C/ PSI
3
Degree F/ Bar
4
Degree F/ PSI

Revision 1.2D Page 15 of 17
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ML Switch User Guide
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
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 tables 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 factory default values.
ID
Allows the user to assign a unique three digit software address to the ML Switch. Note this is only required when the ML Switch is in IP-L
mode.
a. From the function menu scroll to select Id.
b. The current id number will be shown. Use the up/down buttons to scroll through from 000 to 999.
c. Select the desired number and press enter to save.
Network Configuration
In all instances this must be done before the ML Switch is connected to the site network. If a DHCP server is present on the IP network
set the 2 rotary network switches to an appropriate setting, the ML Switch has an auto-initialise function, which will automatically log the
device onto the site network. If the wrong ID has been entered onto the network, you will have to reset the Switch ID by setting the ID to
0-0, power cycle and then re-enter the correct ID.
IP-L (Local IP Address)
To configure the ML Switch for IP-L, set both rotary switches to zero.
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

Revision 1.2D Page 16 of 17
www.resourcedm.com
ML Switch User Guide
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
IP-r (IP Address issued by the DHCP server)
To configure the ML Switch for IP-r, set the two rotary switches to give the ML Switch unique identifier. The ML Switch should then be
connected 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

Revision 1.2D Page 17 of 17
www.resourcedm.com
ML Switch User Guide
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
Specification
Power requirements:
Supply Voltage Range: 100 - 240 Vac ±10% (Mains version)
Supply Frequency: 50 - 60 Hz (Mains version)
Typical supply current: <500 mAmps
Maximum supply current 650mA
Operating temperature range: +50C to +500C
Operating Humidity: 80% maximum
Storage temperature range: -200C to +650C
Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 1,
Installation Category II.
Voltage fluctuations not to exceed ±10% of nominal voltage
Size: 300mm (L) x 35mm (H) x 110mm (W)
Weight: 300 Grams
Safety: EN61010
EMC: EN61326; 1997 +Amdt. A1; 1998
Ventilation: There is no requirement for forced cooling ventilation
Class 2 Insulation: No protective Earth is required and none should be fitted.
The host equipment must provide a suitable external over-current protection device such as: -
Fuse: 1A 240 Vac Antisurge (T) HRC conforming to IEC 60127
Or MCB: 1A, 240 VAC Type C conforming to BS EN 60898
Mounting
There is a fixing lug at each end of the Switch, with hole centres 317 mm apart. Use typically Number 6 x 1” Pan head screw with 6mm
washer, torque down to 1.5 Newton metres.
RS232 Cable Lengths
All RS232 connections must not exceed 15 metres/connection.
Ethernet Cable lengths
Port number
Main Powered Switch
1
Refer to Cat5 standard
2
Refer to Cat5 standard
3
Refer to Cat5 standard
Disclaimer
The specifications of the product detailed in this document may change without notice. RDM Ltd shall not be liable for errors or
omissions, for incidental or consequential damages, directly or indirectly, in connection with the furnishing, performance or misuse of this
product or document.
Revision History
Revision
Date
Changes
Comments
1.2
04/05/2009
1st released copy. Revision history synchronised with ML Switch software
version.
1.2A
20/07/2009
Note on network compatibility with new Switch and IP Module added
1.2C
24/02/2012
Current Issue
1.2D
26/07/2012
New Look