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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  

O

C (

O

F) 

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 

– 100% 

50 

Weighting is biased to Probe 1 

P-13 

Stat 1 cut-in 

--60 to +60 / -76 to 140 

15 / 59 

O

C / 

O

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 

O

C / 

O

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 

O

C / 

O

Over temperature alarm set-point 

P-17 

Stat 1 UT alarm 

-60 to +60 /  -76 to 140 

-5 / 23 

O

C / 

O

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 

– 100% 

50 

Weighting is biased to Probe 1 

P-23 

Stat 2 cut-in 

-60 to +60 /  -76 to 140 

18 / 64.4 

O

C / 

O

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 

O

C / 

O

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 

O

C / 

O

Over temperature alarm set-point 

P-27 

Stat 2 UT alarm 

-60 to +60 /  -76 to 140 

-5 / 23 

O

C / 

O

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 

– 100% 

50 

Weighting is biased to Probe 1 

P-33 

Stat 3 cut-in 

-60 to +60 /  -76 to 140 

20 / 68 

O

C / 

O

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 

O

C / 

O

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 

O

C / 

O

Over temperature alarm set-point 

P-37 

Stat 3 UT alarm 

-60 to +60 /  -76 to 140 

-5 / 23 

O

C / 

O

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 

– 100% 

50 

Weighting is biased to Probe 1 

P-43 

Stat 4 cut-in 

-60 to +60 /  -76 to 140 

22 / 71.6 

O

C / 

O

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 

O

C / 

O

Heating relay goes off above this set-
point. Cooling relay goes off below this 
set-point.* 

Summary of Contents for PR0122-STA

Page 1: ...ata Management Ltd 80 Johnstone Avenue Hillington Industrial Estate Glasgow Scotland G52 4NZ UK 44 0 141 810 2828 Switchboard support resourcedm com Technical Support sales resourcedm com Sales Enquiries For Products PR0710 PR0711 PR0720 PR0721 ML Thermostat PR0122 STA PR0123 STA ...

Page 2: ...nts 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 ...

Page 3: ...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 ...

Page 4: ...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 functio...

Page 5: ...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 ...

Page 6: ...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 O C O F 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 O C O F Heating relay goes off above this set point Cooling relay goes off below this set p...

Page 7: ... 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 ...

Page 8: ...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...

Page 9: ...d 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...

Page 10: ...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 19...

Page 11: ...roller 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...

Page 12: ...rough 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 P...

Page 13: ...70mm 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 controll...

Page 14: ...A 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 a...

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