Theben RAM 712 KNX User Manual
RAM 712 KNX room thermostat for surface-mounted and flush-mounted installa tion
RAM 712 KNX room thermostat for
surface-mounted
and flush-mounted installation
theben
RAM 712 712 9 200
Version: Dec-10 (subject to change) Page 1 of 65
RAM 712 KNX room thermostat for surface-mounted and flush-mounted installa tion
theben
Contents
1 Functional characteristics ......................................................................................................... 4
1.1 Operation .......................................................................................................................... 5
1.2 Benefits of RAM 712 ....................................................................................................... 5
1.2.1 Special features ............................................................................................................ 5
2 Technical data .......................................................................................................................... 6
2.1 General ............................................................................................................................. 6
3 RAM 712 V1.0 application program ....................................................................................... 7
3.1 Selection in the product database ..................................................................................... 7
3.2 Parameter pages ................................................................................................................ 7
3.3 Communication objects .................................................................................................... 8
3.3.1 Object characteristics ................................................................................................... 8
3.3.2 Description of objects ................................................................................................. 11
3.4 Parameters ...................................................................................................................... 17
3.4.1 Settings ....................................................................................................................... 17
3.4.2 Heating control ........................................................................................................... 18
3.4.3 Setpoint values ........................................................................................................... 20
3.4.4 Actual value ................................................................................................................ 23
3.4.5 Cooling control ........................................................................................................... 24
3.4.6 Operating mode .......................................................................................................... 27
3.4.7 Cooling setpoint values .............................................................................................. 29
3.4.8 Inputs E1, E2 .............................................................................................................. 30
4 Start-up ................................................................................................................................... 41
4.1 Installation in a flush-mounted socket ........................................................................... 41
4.2 Actuators to control heating and cooling ....................................................................... 42
4.2.1 Heating control variable ............................................................................................. 42
4.2.2 Cooling control variable ............................................................................................. 42
5 Typical applications: .............................................................................................................. 43
5.1 The school environment: Heating with presence detector and frost protection via
window contact. ......................................................................................................................... 43
5.1.1 Description ................................................................................................................. 43
5.1.2 Devices: ...................................................................................................................... 43
5.1.3 Overview .................................................................................................................... 44
5.1.4 Objects and links ........................................................................................................ 45
5.1.5 Important parameter settings ...................................................................................... 46
6 Appendix ................................................................................................................................ 48
6.1 Determining the current operating mode ....................................................................... 48
6.1.1 New operating modes ................................................................................................. 48
6.1.2 Old operating modes .................................................................................................. 49
6.1.3 Determining the setpoint value .................................................................................. 50
6.2 Setpoint offset ................................................................................................................ 52
6.3 Base setpoint value and current setpoint value .............................................................. 53
6.4 The scenes ...................................................................................................................... 54
6.4.1 Principle ..................................................................................................................... 54
6.4.2 Saving scenes: ............................................................................................................ 55
6.4.3 Calling scenes: ............................................................................................................ 56
6.5 External interface ........................................................................................................... 57
6.5.1 Circuit board ............................................................................................................... 57
Version: Dec-10 (subject to change) Page 2 of 65
RAM 712 KNX room thermostat for surface-mounted and flush-mounted installa tion
theben
6.5.2 External sensor ........................................................................................................... 58
6.5.3 Suitable actuators ....................................................................................................... 58
6.6 Temperature control ....................................................................................................... 59
6.6.1 Introduction ................................................................................................................ 59
6.6.2 Response of the P-control .......................................................................................... 60
6.6.3 Response of the PI control ......................................................................................... 61
7 Glossary .................................................................................................................................. 62
7.1 Continuous and switching control .................................................................................. 62
7.2 Hysteresis ....................................................................................................................... 62
7.2.1 Negative hysteresis: .................................................................................................... 62
7.2.2 Positive hysteresis ...................................................................................................... 63
7.3 Dead zone ....................................................................................................................... 63
7.3.1 Case 1: Heating and cooling with continuous control ................................................ 63
7.3.2 Case 2: Heating with 2-point control and cooling with continuous control ............... 64
7.3.3 Case 3: Heating with continuous control and cooling with 2-point control ............... 64
7.3.4 Case 4: Heating and cooling with 2-point control ...................................................... 64
7.3.5 Setpoint value calculation .......................................................................................... 65
Version: Dec-10 (subject to change) Page 3 of 65
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