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Solar controller
SOL3-3
Installation and operating
manual
Firmware version 1.07
April 2011
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Installation and operating manual KT-Elektronik
Warranty
We permanently enhance our products, therefore we reserve the right to make changes
to our products at any time and without prior notice.
We take no responsibility for the accuracy or completeness of this manual. No liability
can be accepted for the use of our products for a buyer specific purpose. Buyer claims,
especially claims for damages including lost profits or other financial losses are
excluded. This does not apply if the damage caused by intent or gross negligence. In
case of negligent violations of major contractual obligations, our liability is limited to the
foreseeable damage
Security advices
Only qualified personnel that is familiar with installation and
commissioning of this product is allowed to mount and put into
operation the device. Appropriate shipping and storage are assumed.
The product is designated for use in heavy current equipment.
Installation and maintenance have to be performed according to the
corresponding safety regulations.
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Table of contents
1 Operation ...................................................................................................................... 6
1.1 Controls .................................................................................................................. 6
1.1.1 Rotary pushbutton ........................................................................................... 6
1.1.2 Rotary switch ................................................................................................... 7
1.2 Display .................................................................................................................... 8
1.3 Retrieving data – Information level ....................................................................... 10
1.4 Setting the system time ........................................................................................ 11
1.5 Adjust usage schedule settings ............................................................................ 12
1.6 Setting the party mode (heating circuit/auxiliary heating) ..................................... 14
1.7 Access advanced information level ...................................................................... 15
1.7.1 Setting holidays .............................................................................................. 16
1.7.2 Setting vacation times .................................................................................... 16
1.8 Operation level stucture ....................................................................................... 18
2 Commissioning ............................................................................................................ 19
2.1 Setting the system variant ID ................................................................................ 19
2.2 Activate and deactivate functions ......................................................................... 20
2.3 Edit settings .......................................................................................................... 22
2.4 Sensor calibration ................................................................................................. 23
2.5 Reset to factory default settings ........................................................................... 24
3 Manual operating mode .............................................................................................. 25
4 System variants ........................................................................................................... 26
4.1 Extending the basic system variant representations ............................................ 33
5 Solar circuit functions .................................................................................................. 35
5.1 Basic Control function ........................................................................................... 35
5.2 Storage ................................................................................................................. 37
5.3 Swimming pool ..................................................................................................... 38
5.4 Collector return flow sensor, Collector flow sensor .............................................. 39
5.5 Measurement of solar power and solar energy .................................................... 40
5.6 Rotation speed control .......................................................................................... 42
5.7 Collector overheating protection ........................................................................... 43
5.8 Collector minimum temperature ........................................................................... 44
5.9 Start up function ................................................................................................... 44
5.10 Forced pump operation (blocking protection) ..................................................... 44
5.11 Collector Antifreeze ............................................................................................ 45
5.12 Two collector arrays ........................................................................................... 45
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5.13 External heat exchanger ..................................................................................... 46
5.14 Auxiliary heating with secondary heat generator ................................................ 47
5.15 Raise return flow of external heating system ..................................................... 47
5.15.1 Main principle ............................................................................................... 48
5.15.2 Implementation ............................................................................................ 48
6 Domestic water circuit functions .................................................................................. 49
6.1 Domestic water heating in storage tank ............................................................... 49
6.2 Thermal Disinfection of the storage tank .............................................................. 49
7 System wide functions - all system variants ................................................................ 50
7.1 Automatic summer/winter switching ..................................................................... 50
7.2 Antifreeze ............................................................................................................. 50
7.3 Locking manual operating mode .......................................................................... 51
7.4 Locking the rotary switch ...................................................................................... 51
7.5 Enter a valid individual access code ..................................................................... 51
7.6 Temperature difference controller ........................................................................ 52
8 Malfunction .................................................................................................................. 53
8.1 Error list ................................................................................................................ 53
8.2 Sensor failure ....................................................................................................... 53
8.3 Temperature monitoring ....................................................................................... 54
8.4 Error status register .............................................................................................. 54
8.5 SMS delivery in case of a system failure .............................................................. 55
9 Communication .......................................................................................................... 56
9.1 Communication module KOM232PC ................................................................... 57
9.2 Communication module iCon485 ........................................................................ 57
9.3 Communication module KOM232M ..................................................................... 59
9.4 Data Modem DataMod11 .................................................................................... 60
9.5 ModBus-MBus-Gateway ...................................................................................... 61
9.6 Description of the adjustable communication settings ......................................... 61
9.7 Memory module ................................................................................................... 62
9.8 55Viewer for visualization and remote maintenance. .......................................... 63
9.9 Data Logging ....................................................................................................... 64
10 Mounting ................................................................................................................... 65
11 Electrical connection ................................................................................................. 67
11.1 Notes for wire installation ................................................................................... 67
11.2 Surge Protection Measures ................................................................................ 67
11.3 Connecting the controller .................................................................................... 67
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11.3.1 Connecting the sensors ............................................................................... 68
11.3.2 Connecting the pumps ................................................................................. 68
11.3.3 Legend for connection diagram ................................................................... 68
11.3.4 Wiring diagram ............................................................................................. 69
11.3.5 Terminal assignment for Outputs ................................................................. 70
11.3.6 Terminal assignment for inputs .................................................................... 70
12 Appendix ................................................................................................................... 71
12.1 Function block lists ............................................................................................. 71
12.2 Parameter list ..................................................................................................... 74
12.3 Resistance values .............................................................................................. 80
12.4 Technical specifications ...................................................................................... 81
12.5 Accessories ........................................................................................................ 82
12.6 Function block settings in configuration levels ................................................... 83
12.7 Abbreviations ...................................................................................................... 84
12.8 Access codes ..................................................................................................... 85
12.9 Notes .................................................................................................................. 85
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1 Operation
The controller is factory-provided with standard temperature settings and timing
programs and therefore ready for use.
The current date and time have to be set at initial operation of the controller (Chapter
1.4).
1.1 Controls
The operational controls are located on the front side of the controller.
1.1.1 Rotary pushbutton
Rotary pushbutton
Turn :
Display, select settings and function blocks
Push :
confirm selection or setting
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1.1.2 Rotary switch
The rotary switch is used to select the operating mode on the left hand and the basic
settings of the controller on the right hand.
Rotary switch – operating mode
Control on, display informations about
operating behaviour of unit (standard position)
Turning off the control functions
(Controller remains in operation)
Manual operating mode:
manual switching of pumps and valves,
position presetting in percent
Rotary switch – Settings
Solar-Turn-on threshold
Solar-Turn-off threshold
Scheduled time ranges and operating modes for
aux. heating (2) and hot water circulation (3)
Party mode
System time:
Setting time, date and year
Configuration and settings level
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1.2 Display
During operation, the display shows the current time as well as information about the
status of the controller. The usage periods are represented by black squares below the
row of numbers. Symbols mark the operational status of the controller.
Holiday operating
mode (OM)
Vacation OM
Malfunction
Frost protection OM
2
Solar circuit
3
Auxiliary heating,
domestic water
circuit
Automatic operating
mode
Automatic operating
mode
Night-time operation
Manual operating mode Daytime Operation
Stand-by OM Manual operating mode
Collector pump CP1 Stand-by OM
Collector heat exchanger
pump, CTP
Circulation pump ZP
Storage tank pump SP1 Aux. heating NH
Collector switching
valve CUV
Collector pump CP2
Temperature
difference switch TdS
Storage switching
valve SUV
Storage pump SP2
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The following applies to the icon of the collector pump(s):
Icon or
Description
Icon off Pump off
Icon flashes briefly
Condition to turn on the pump is met but the
pump is still off because of the minimum idle
time.
Icon is on but disappears for a
short time in intervals
Condition to turn off the pump is met but the
pump is still running because of the minimum
running time.
Icon on Pump is running
The controller status can be viewed at operating mode level (Chapter 1.3 ).
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1.3 Retrieving data – Information level
In the standard rotary switch position „Information level“ one can retrieve
informations about time, date, vacation-times and holidays as well as the temperature
set-points for the connected sensors and their current temperature.
Note: Information can also be retrieved in level "manual operating mode". To do so,
select "Info", then confirm and proceed as described.
Procedure:
Select value.
The screen now displays different items one after the other, depending on the
configuration of the controller.
__:__ Current time
Flow temperature from the collector to the storage tank CVF
Return flow temperature from the collector to the storage tank CVF
Temperature at storage tank sensor SF1
Temperature at storage tank sensor SF2
Temperature at solar collector CF1
2
Temperature at solar collector CF2
Operating hours of solar circuit
Set-point/threshold and actual value comparison.
When the time is marked in the display, pressing the rotary pushbutton will
show the date.
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1.4 Setting the system time
System time and date have to be set during first start-up and after each loss of power
with a duration of more than 24 hours. This is indicated by a blinking time display.
Procedure:
Turn rotary switch to the position
“system time” (right hand).
Display: shows current time setting
Change the time setting.
Confirm the time set.
Display: shows current year setting
Change the year setting.
Confirm the year set.
Display: show current date setting (day.month)
Change date setting.
Confirm the date set.
Display: shows current time setting
Move the rotary switch back to the "Information
level" position (left hand).
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1.5 Adjust usage schedule settings
There are three separate usage schedules for
• Auxiliary heating
• Domestic water circulation
The following applies to each time program:
For each day of the week, three time ranges can be programmed. If only one time range
is needed, the start and end time of the second range have to be set to the same value.
The third range will then not be shown any more. If only two time ranges are needed, the
start and end time of the third range have to be set to the same value.
The time ranges for the control circuits are adjusted by means of their identification
numbers shown in the display:
3
Auxiliary heating
3
Domestic water circulation
Setting FS* Value range
Time range/day 1–7 1–7, 1, 2, 3, 4, 5, 6, 7, for which 1–7 = daily,
1 = Monday 2 = Tuesday, ..., 7 = Sunday
Beginning of first time range 06:00 00:00 to 24:00 hours; 15 minute increments
End of first time range 22:00 00:00 to 24:00 hours; 15 minute increments
Beginning of second time range 22:15 00:00 to 24:00 hours; 15 minute increments
End of second time range 22:15 00:00 to 24:00 hours; 15 minute increments
Beginning of third time range – 00:00 to 24:00 hours; 15 minute increments
End of third time range – 00:00 to 24:00 hours; 15 minute increments
* Factory default settings valid for heating circuit
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Procedure: Turn rotary switch to position “Usage schedules”
Select circuit for which the time ranges shall be
set.
(only available circuits of the selected system
variant are offered)
Confirm selected circuit.
Display: 1–7
Select time range/day:
1–7 = daily,
1 = Monday 2 = Tuesday, ..., 7 = Sunday
Switch time range/day to edit mode:
Display: START, flashes
Change start time (15-minute increments).
Confirm start time. Display: STOP
Change stop time (15-minute increments).
Confirm stop time.
Display: START
The second time range is adjusted the same
way as the first one.
Repeat the procedure for each day to be scheduled.
Move the rotary switch back to the "Information level" position (left hand).
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3
Auxiliary heating
3
Domestic water
circulation
Note: Do not use menu 1–7 to check the scheduled time ranges. Selecting this
menu item after having adjusted the schedule will copy Monday times to all other
days of the week.
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1.6 Setting the party mode (heating circuit/auxiliary heating)
The party mode overrides the nominal operation of the controller by starting a new or
prolonging a programmed daytime mode time range for the duration of the time set for
the party mode. The party mode timer starts working once the rotary switch is moved to
the "automatic mode" position (left hand). When the timer runs out the party mode
function is reset to 00:00.
The party mode is set one after the other for each circuit with the rotary switch:
Setting FS Value range
initiate or continue nominal operation 0 h 0 to 48 h
Procedure:
Move rotary switch to the position “party mode” .
Select the circuit for which daytime mode shall be initiated or prolonged.
3
Storage tank auxiliary heating
Confirm selected circuit.
Display: shows 00:00 or remaining party timer time.
Set desired non-recurring duration.
Move the rotary switch back to the "Information level" position (left
hand).
Note:
The lapse of time of the party timer is displayed in 15 minute increments.
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1.7 Access advanced information level
After entering the access code 1999 the following informations are accessible through
the menu items as described in chapter 1.3:
•Measured values for not needed sensor inputs of current system layout
•Volume flow rate
•Performance
•Holidays (editable)
•Vacation times (editable)
•Valve positions
•Binary input switching status
•Info 2 - The following values are sequentially displayed:
Controller-ID
Memory usage, Data logging module (chapter 9.9)
Modbus client address
Operating hours of solar circuit
Volume flow rate of flow sensor in solar circuit
Current performance of solar circuit
Total gain (rate) of solar circuit
Daily gain of solar circuit
Access advanced operation level:
Switch to configuration and settings level.
Display shows 0 0 0 0
Enter access code 1999.
Confirm code. Display shows 0 0 0 0
Move the rotary switch back to the "Information level" position (left
hand).
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Note:
Re-entering the access code 1999 hides the advanced informations.
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1.7.1 Setting holidays
On public holidays the time ranges entered for Sunday apply. The number of
programmable holidays is limited to 20.
Setting FS Level / Range
Holidays – Advanced information level / 01.01 to 31.12
Procedure:
In the advanced information level select the
menu item "holidays". Display:
Confirm selection "holidays".
Eventually select item – – – –.
Enter edit mode for holiday. flashes
Change holiday setting.
Confirm the holiday set.
To enter more holidays reselect – – – – and repeat the steps highlighted in grey.
Select End
Leave menu "holidays".
Note: Holidays can alternatively be entered in level PA5 (Chapter 2.2).
Remove holiday:
In menu "holidays" select the holiday to be deleted.
Confirm selection.
Select item – – – –.
Delete holiday.
Note: Holidays that are not assigned to a fixed date should be deleted by the
end of the year, so they are not automatically taken over into the next year.
1.7.2 Setting vacation times
During vacation times the system is set to permanent reduced operation. The number of
programmable vacation times is limited to 10.
Setting FS Level / Range
Vacation (Beginning, End) – Advanced information level / 01.01 to 31.12
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Procedure:
In the advanced information level select the
menu item "vacations". Display:
Confirm selection "vacations".
Display: START, – –.– –
Eventually select item – – – –.
Enter edit mode for vacation time. flashes
Change beginning of vacation.
Confirm setting.
Display: STOP, – –.– –
Change end of vacation.
Confirm setting. Black squares are shown below
the figures 1 to 4 at the head of the display for
the assignment of the vacation to each control
circuit.
Select control circuits for which the vacation
shall be applied.
current vacation for heating circuit Rk1
The vacation can be assigned to a single circuit
or to any combination of circuits (Rk1, domestic
water circuit).
To enter more vacation times reselect – – – – and repeat the steps highlighted in grey.
Select End
Leave menu "vacations".
Note: Vacation times can alternatively be entered in level PA5 (Chapter 2.2).
Remove vacation:
In menu "vacations" select the beginning of the vacation time to be
deleted.
Confirm selection.
Select item – – – –.
Delete vacation.
Note: Saved vacation times should be deleted by the end of the year, so they are not
automatically taken over into the next year.
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1.8 Operation level stucture
PA3/CO3: Solar circuit
PA4/CO4: Auxiliary heating/domestic water heating
PA5/CO5: System wide
PA6/CO6: Communication
Anl: system variant ID
Fig. 2: Level structure
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2 Commissioning
The configuration procedures and parametrization described in this chapter can only be
performed by entering a valid controller access code.
The access code provided by the factory for first time use can be found in the appendix.
To avoid an unauthorized use, it is recommended to cut out or black out the code.
Additionally the standard code can be replaced by an individual one (Chapter 7.5).
2.1 Setting the system variant ID
Several hydraulic system variants are available. Each variant is represented by an
identification number. The variants are illustrated in chapter 4. The available controller
functions are described in chapters 5, 6 and 7.
Editing the variant ID resets previously entered function blocks to factory default settings.
At parameter level, function block parameters and settings will be preserved. The variant
ID can be set at configuration level.
Procedure:
Switch to configuration and settings level.
Display shows 0 0 0 0
Enter a valid access code.
Confirm code.
Display: PA3
Select system variant.
Switch to edit mode.
Edit system variant ID.
Confirm ID.
Display: End
Leave configuration and settings level.
Display: 0 0 0 0
Move the rotary switch back to the "Information level" position .
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2.2 Activate and deactivate functions
Each function can be activated within its related function block. The sequence of
numbers shown at the head of the display (0 to 24) represent the function block
numbers. When accessing the configuration level, a black square is displayed right hand
below active function block numbers. The function blocks are described in chapter 12.1.
The functions are grouped by topic:
CO3: Solar circuit
CO4: Domestic water circuit/auxiliary heating
CO5: System wide
CO6: Modbus-Communication
Procedure:
Switch to configuration and settings level.
Display shows 0 0 0 0
Enter a valid access code.
Confirm code.
Display: PA3
Select configuration level.
Access configuration level.
Select function block.
Activated function blocks are marked with "- 1".
Deactivated function blocks are marked with “- 0”.
Switch to edit mode.
F__ flashes
Activate function block.
Display: F__ - 1
An active function block can be identified by a black square that is
displayed right hand below the function block number at the head of the
display.
else:
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Deactivate function block.
Display: F__ - 0
Confirm setting.
As long as the function block is not closed, other function block parameters
can be set.
Procedure:
Edit and confirm settings.
Eventually, the next function block parameter is displayed.
Once all settings are confirmed, the function block will be left.
To configure more function blocks, repeat the steps highlighted in grey.
Select End
Leave configuration level.
Select End
Leave configuration and settings level.
Display: 0 0 0 0
Move the rotary switch back to the "Information level" position .
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2.3 Edit settings
Depending on the current system variant ID and active functions, not all parameters
listed in the parameter list in the Appendix will be accessible (Chapter 12.2). The
functions are grouped by topic:
PA3: Solar circuit
PA4: Domestic water circuit / auxiliary heating
PA5: System wide
PA6: Modbus-Communication
Procedure:
Switch to configuration and settings level.
Display shows 0 0 0 0
Enter a valid access code.
Confirm code.
Display: PA3
Select settings level.
Access settings level.
Select parameter.
Switch to edit mode.
Edit parameter
Confirm parameter.
To set more parameters repeat the steps highlighted in grey.
Select End
Leave settings level.
Select End
Leave configuration and settings level.
Display: 0 0 0 0
Move the rotary switch back to the "Information level" position .
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2.4 Sensor calibration
The controller is designed for connection of Pt1000-sensors. The sensor values of
resistance are listed on page 80.
If the temperature values displayed by the controller do not match the real temperatures,
the measured values of the connected sensors can be adjusted. The temperature value
displayed has to be replaced by the value measured directly at the measuring point
(reference value). The adjustment has to be activated in CO5, function block F20. A
wrong adjustment can be deleted (for all inputs) by setting - 0 in F20.
Procedure:
Switch to configuration and settings level. Display shows 0 0 0 0
Enter a valid access code.
Confirm code. Display: PA3
Select configuration level CO5.
Access configuration level CO5.
Select function block F20.
Switch to edit mode.
Select sensor icon according to the icons displayed on page 10.
Display measured value. Value flashes.
Correct value.
The current temperature measured with a thermometer directly at the
measuring point has to be entered (reference value).
Confirm adjusted value.
To calibrate other sensors repeat procedure.
Select End
Leave configuration level.
Select End
Leave configuration and settings level.
Display: 0 0 0 0
Move the rotary switch back to the "Information level" position .
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2.5 Reset to factory default settings
All parameters set by means of the rotary switch as well as the parameters set in level
PA3 to PA5 can be reset to factory default settings.
Procedure:
Switch to configuration and settings level.
Enter access code 1991.
Confirm code.
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Note: The error message "Err 2" will be generated while resetting to the factory
default settings. It will be removed automatically shortly after midnight.
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3 Manual operating mode
The manual operating mode allows the configuration of all outputs
(chapter 11).
Manual operating mode is set with the turn switch for the requested circuit:
Procedure:
Move rotary switch to position “Manual operating mode”.
Select menu item in compliance with the system variant:
POS2 : Position presetting for analogue output
UP1: Operate the relay for heating circuit pump UP1
ZP: Operate the relay of the circulation pump
CP1: Operate the relay of the collector pump CP1
CP2: Operate the relay of the collector pump CP2
CU: Operate the relay of the collector switching valve CUV
SP1: Operate the relay of the storage tank pump SP1
SP2: Operate the relay of the storage tank pump SP2
NH: Operate the relay for auxiliary heating NH
SU: Operate the relay for the storage tank switching pump SUV
CTP: Operate the relay for the collector heat exchanger pump CTP
TdS: Operate the relay for the temperature difference switch TdS
Confirm selection. Display flashes.
Change the position, switching state of the pump and other units.
Confirm editing.
The changed values remain as long as the manual operating mode stays
active.
Move the rotary switch back to the "Information level" position .
The manual operating mode of the affected control circuit can be
deactivated by selecting any other operating mode.
EB_37383_SOL3-3_EN002 25
Note:
Just by moving the rotary switch to the position “manual operating mode”, the
outputs of the controller are not affected. Only the specific change of position
respectively switching status will influence them.
In manual operating mode the antifreeze function cannot be guaranteed (Chapter 7.2).
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4 System variants
26 hydraulic system variants are available. They differ in the first instance in:
• Number of collector arrays,
• Number of storages,
• Switching between several collectors or storages by means of switching valves
or several pumps,
• Internal (or none) or external heat exchanger.
The following section shows 15 system variants, all other1 differ only by the presence or
absence of extensions as:
• Auxiliary heating (e.g boiler, electric cartridge heater),
• Domestic water circulation pump
The system images shown are just basic variant representations missing any kind of cutoff and safety devices or check valves for example.
System variant I I.0.0 One collector, one storage tank
1 All system variant IDs are listed at page 70 in the list of output terminal configuration.
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System variant 2 I.0.0
Two collectors (switching valve), one storage tank
System variant 3 I.0.0
Two collectors (two pumps), one storage tank
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System variant I o I.0.0
One collector, one storage, external heat exchanger
System variant 2 o I.0.0
Two collectors (switching valve), one storage tank, external heat exchanger
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System variant 3 o I.0.0
Two collectors (two pumps), one storage tank, external heat exchanger
System variant I 2.0.0
One collector, two storage tanks (switching valve)
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System variant 2 2.0.0
Two collectors (switching valve), two storage tanks (switching valve)
System variant 3 2.0.0
Two collectors (two pumps), two storage tanks (switching valve)
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System variant I o 2.0.0
One collector, two storage tanks (switching valve), external heat exchanger
System variant I 3.0.0
One collector, two storage tanks (two pumps)
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System variant 2 3.0.0
Two collectors (switching valve), two storage tanks (two pumps)
System variant I o 3.0.0
One collector, two storage tanks (two pumps), external heat exchanger
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4.1 Extending the basic system variant representations
Each system image shown can be enlarged to include other functions. These additional
functions can be combined with each other.
The functions heating circuit, auxiliary heating and circulation are identified by the last
two digits of the system variant ID:
xxx.0.0 no additional function
xxx. I.0 Auxiliary heating
xxx.2.0 Circulation pump
xxx.3.0 Auxiliary heating and circulation pump
Example of all additional functions with system variant I - I:
System variant I - I. I.0 (with auxiliary heating)
One collector, one storage tank
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System variant I - I.2.0 (with circulation pump)
One collector, one storage tank
System variant I - I.3.0 (with auxiliary heating and circulation pump)
One collector, one storage tank
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5 Solar circuit functions
5.1 Basic Control function
The controller monitors the collector temperature (sensor CF) as well as the storage
temperature (sensor SF) and turns the collector pump (CP) on once enough solar
energy is available to heat up the storage.
The temperature chart shows how regulation works under consideration of the
parameters:
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Figure 1: temperature chart
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A) The collector temperature exceeds the storage temperature by more than the
turn-on threshold (8 K). The collector pump is turned on.
B) The collector temperature dropped below the turn-off threshold (SF + 4 K). The
collector pump is turned off.
C) The collector temperature exceeds the turn-on threshold again. The pump is
turned on as soon as the minimum idle time elapses.
D) The collector temperature dropped and falls below the turn-off threshold again
(SF + 4 K). The collector pump is turned off.
E) The collector temperature exceeds the storage temperature by more than the
turn-on gap (8 K). The collector pump is turned on.
F) The collector temperature quickly dropped below the turn-off threshold again.
The pump remains running as long as the minimum running time has not
elapsed.
Parameters for the basic function:
Setting FS Value range Description
Direct input
8 K 1 to 50 K Turn-on threshold
Direct input
4 K 1 to 50 K Turn-off threshold
Minimum run time
PA3
60 s 0 to 1800 s Minimum run time for collector pump
Minimum idle time
PA3
180 s 0 to 1800 s Minimum idle time for collector pump
Note:
The turn-on condition only applies if the actuator to be turned on is turned off. The
turn-off condition only applies if the actuator to be turned off is turned on.
By placing sensors at positions which only allow an insufficient measurement of
relevant temperatures and by an inadequate selection of settings at run-time
respectively by delaying control signals, it may be possible to bring the controller to
operate switches that conflict with the goal of a maximum solar energy.
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5.2 Storage
The storage is only charged until the maximum allowed temperature is reached. Using
factory default settings, charging the storage already ends at 60°C. Falling below 58°C
would initiate a new charging cycle. If the water is routed to extraction points directly,
there is a scalding danger at higher temperatures. If using additional components –
such as mixing taps – and therefore is no risk, higher storage temperatures can and
should be allowed.
Too high temperatures may cause limescale that can negatively affect the performance
of the heat exchanger.
Setting FS Value range Description
Storage tank 1Max A PA3
60 °C 20...160 °C maximum storage tank temperature 1
(turn-off condition)
Storage tank 1Max E PA3
58 °C 20...160 °C maximum storage tank temperature 1
(turn-on condition)
The controller supports the selective charging of two storages, e.g. a storage tank and a
heating buffer storage. Depending on the achievable and the allowed storage
temperature, the solar heat is lead to the storage by means of a switching valve
respectively two separate pumps. The two (logically existing) storages can also be
realized by using a stratified storage with alternative adapters for thermal layering.
Setting FS Value range Description
Storage tank 2Max A PA3
60 °C 20...160 °C maximum storage tank temperature 2
(turn-off condition)
Storage tank 2Max E PA3
58 °C 20...160 °C maximum storage tank temperature 2
(turn-on condition)
The solar thermal controller SOL3-3 is used to transfer the usable solar energy into the
storage tanks in systems with two storage tanks according to the priority presetting and
the programmed parameters. The scope of application of the saved energy is irrelevant
for this process. Differing from the system variants shown in chapter 4, the domestic
water heating and/or the heating circuit can be feeded by storage tank 1 (with SF1)
and/or storage tank 2 (with SF2). Additional equipment for charge reversal can be also
provided.
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Storage tank priority
Depending on the usage, it could make sense to reach a higher temperature in one of
both storage tanks or to reach a uniform allocation of the collected energy. The
parameter Type of storage tank priority is used to determine the solar controller mode of
operation.
Setting FS Value range Description
Type of storage tank
priority
3 1...5 The following table
Priority
mode
Function Description
1 hard priority
Max
Storage tank 2 is only charged if the maximum temperature in
storage tank 1 has been reached
2 hard priority
Min.
Storage tank 2 is only charged if the minimum temperature in
storage tank 1 has been exceeded.
(defined at auxiliary heating, see section 5.14)
3 soft priority Storage tank 1 is always charged if the collector temperature is
sufficient to charge it. If not sufficient to charge storage tank 1
but sufficient to charge storage tank 2, charging of storage tank
2 is initiated. After the lapse of the specified time (Charging
time for low priority storage tank, WE15 minutes), charging is
interrupted for the minimum idle time (see section 5.1). At the
end of this interruption it is newly decided if the temperature is
sufficient to charge storage tank 1.
4 alternating
charge
The storage with the lowest temperature is charged first. Once
the currently charged storage tank becomes warmer by more
than 5K compared to the other one, charging is switched to the
colder storage tank. Switching can occur several times.
5 no priority Both storages tank are charged having equal priority, that is,
the storage tank with the lower temperature is charged first. If
charging is not interrupted, the storage tank is charged to its
maximum temperature and only then switched to charge the
other storage tank.
5.3 Swimming pool
The solar controller SOL3 is suitable for the solar heating of swimming-pools. Any usable
solar energy is transferred in a swimming pool, which can be selected as a storage tank
1 or storage tank 2 with the given storage tank priority mode.
The maximum storage tank temperature (temperature of the swimming-pool) is to the
need to adapt.
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5.4 Collector return flow sensor, Collector flow sensor
In several systems, the sensors for collector temperature and for storage tank
temperature are not really appropriate to decide if the collector pump should be already
turned off or not. It is possible that fluid with a higher temperature than measured by the
storage tank sensor flows from the storage tank to the collector, e.g. because of layering
in the storage tank. It is also possible that the temperature measured by the collector
sensor differs from the one of the heat carrier medium entering the storage tank. Both
can result to a senseless continued operation of the collector pump even without
sunshine, until the temperatures have changed.
A reliable turn-off criteria can be obtained by using a return flow sensor (CRF), and even
better by using both, a flow sensor (CVF) and a return flow sensor (CRF). By activating
the function block CO3-FB08 collector return flow sensor, turning off the collector pump
is not based on the difference between CF and SF any more, but on the difference
between CF and CRF.
If a collector flow temperature sensor is also present (function block CO3-FB08 = On),
the temperature difference between CVF and CRF is also relevant to turn off the pump.
Function FS Description
CVF
CRF
0
0
CO3 -> F07 Collector flow sensor active
CO3 -> F08 Collector return flow sensor active
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5.5 Measurement of solar power and solar energy
To document the solar gain of the solar system, a heat meter has been implemented,
which determines the heat quantity provided by the solar system by means of the flow
and return flow temperature and a flow volume sensor (quantity impulse generator)
respectively a flow volume sensor replacement value.
The temperature difference between flow and return flow is proportional to the energy
transferred into the storage at a given flow rate. The controller displays the current solar
energy and the current day total if the function block CO3-FB05 energy measuring has
been activated.
If the flow volume sensor (VST) is missing, a fixed flow rate can be set. This value is
used as substitute for the flow volume value when the pump is running.
The following alternatives are possible depending on the existing sensors:
Sensors Turn-off criteria Power and energy measurement
CF, SF CF - SF not available
CF, SF, CRF CF - CRF A fixed flow rate value is assumed (not
available with rotation speed control),
eventual measurement errors at CF
CF, SF, CRF, CVF CVF - CRF A fixed flow rate value is assumed (not
available with rotation speed control)
CF, SF, CRF, VST CF - CRF Flow rate is measured, eventual
measurement errors at CF
CF, SF, CRF, CVF, VST CVF - CRF Flow rate is measured, highest accuracy
achievable
In order to calculate the power and energy, the controller has to know the heat capacity
of the heat carrier medium. This value depends on an eventually used antifreeze fluid, its
concentration and the temperature. The heat capacity of water is approx. 1.16 Wh/(lK)
respectively. 4.18 kJ/(kgK) at 25 °C and approx. 1.12 Wh/(lK) respectively 4.03 kJ/(kgK)
at 100°C. The necessary specifications when using antifreeze fluid (solar fluid) can be
obtained from the antifreeze manufacturer.
The impulse factor specifies the flow rate in litre, after which an impulse is sent by the
sensor. This value should be found on the package or in the data sheet of the flow
sensor. If the sensor expects impulses/m³ instead of l/Impulse, the value has to be
converted:
e. g. 100 impulses/m³ are equivalent to 0.01 m³/impulse respectively 10 l/impulse
If the capacity is given in Wh/(kgK), the value has to be converted to Wh/(lK) by means
of the fluid density. Some general notes on the conversion of heat capacity values:
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• 1 watt hour (Wh) = 3600 watt seconds (Ws)
• 1 watt hour (Wh) = 3600 joules (J)
• 1 kilowatt hour (kWh) = 1000 watt hours (Wh)
Function FS Description
Energy measurement
Heat capacity 25°C
Heat capacity 100°C
Correcting factor
0
1.16
1.12
1.00
CO3 -> F05 – 1 – Heat meter active
Heat capacity of carrier medium at 25 °C in Wh/
(Litre*K) / 0.3 to 2.5 Wh/(LK)
Heat capacity of carrier medium at 100 °C in Wh/
(Litre*K) / 0.3 to 2.5 Wh/(LK)
Correction factor / 0.2 to 2.5
Volume flow rate
Impulse factor
Volume flow
replacement value
0
10
0
500
CO3 -> F06 – 1 – impulse capture active
Impulse factor for flow volume sensor / 1 to 250
litre/impulse
CO3 -> F06 – 0 – Flow replacement value active
Flow volume sensor replacement value/ 10 to
5000 litre/h
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5.6 Rotation speed control
It might make sense to run the pump with a lower flow rate at low solar radiation. By
doing so, the following can be achieved:
–a higher temperature is reached at the collector. This impairs the efficiency of the
collector, but allows to heat up a small amount of water in the storage.
–the power consumption of the pump is reduced.
Basically, the turn on and off conditions for the pumps apply as without rotation speed
control. Additionally, the 0...10V-output is provided with rotation speed information when
the pump is running.
The following speed control modes are available:
1 - Constant temperature difference
The rotation speed is regulated such that the temperature at the collector is higher by a
certain value (factory default setting 8K) than at the storage. The programmed value is
usually exceeded at high solar radiation, what causes the pump to run at 100%. Once
the difference drops below the set-point, the flow rate is reduced. The temperature in the
collector flow thereby increases again and the difference remains at the set-point.
If a return flow sensor is present, the temperature difference between the collector
sensor and the return flow sensor is corrected, if flow and return flow sensor exist, then
the difference between these two is corrected.
2 - Constant collector temperature
Only the collector temperature (or collector flow sensor, if present) is considered. It is
adjusted to the programmed set-point (e.g. 60°C). The programmed value is usually
exceeded at high solar radiation, the controller runs the pump at 100%. If the solar
radiation becomes weaker, so that the temperature drops below the set-point, the
controller reduces the rotation speed of the pump, thereby the heat carrier medium
remains for a longer period in the collector and the temperature increases again. In case
the solar radiation decreases such that the temperature can't even be hold at the
minimum rotation speed set (e.g. 30%), then the controller signalizes 0% which equals
0V which turns the pump off if this has not been done yet by means of a normal turn-off
condition.
A rotation speed control is only available for one single pump. This might therefore not
be reasonable for system variants with more than one pump. In system variants with
external heat exchanger, the storage circuit rotation speed is always regulated whereas
the pump (-s) in the collector circuit are run with a constant rotation speed. A uniform
temperature distribution in the collector is achieved this way, which improves the
collector efficiency.
The SOL3 controller has a 0...10V-output that can be connected to the input of a
corresponding pump. Parameter settings can curtail the voltage range of this variable:
If the calculated value is above the programmed maximum rotation speed value, a signal
for 100% is sent (corresponding to 10 V output). If the calculated value is below the
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programmed minimum rotation speed a signal for 0% (corresponding to 0 V output) is
sent.
The calculation is based on a PID algorithm, whose parameters can be customized.
Function FS Description
Rotation speed mode
Rotation speed set-point
Minimum rotation speed
Maximum rotation speed
PID control parameters
1
10
0%
100%
2.0
120 s
0 s
CO3 -> F04 Mode of rotation speed control / 1...2
Set-point for rotation speed control / 1...100 °C
respectively K (Differential or absolute value)
Minimum rotation speed / 0 ... 50%
Maximum rotation speed / 50 ... 100%
KP (boost) / 0.1 to 50.0
TN (reset time) / 1 to 999 s
TV (retention time) / Do not change value!
5.7 Collector overheating protection
If the collector temperature exceed this maximum value (default factory setting is 130°C),
it is assumed that steam is already in the system, and therefore no circulation takes
place any more. The collector pump is turned off in this case until the temperature
dropped to a lower value (default factory setting is 110°C).
Setting FS Value range Description
Collector-Max A
PA3
130 °C 90 ... 160 °C Maximum collector temperature
(turn-off condition)
Collector-Max E
PA3
110 °C 90 ... 160 °C Maximum collector temperature
(turn-on condition)
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5.8 Collector minimum temperature
A minimum collector temperature can be set, underneath which the pump is not turned
on at all. This can be reasonable in cases where it is known that the solar gain ratio lays
below the pump power ratio.
A very low temperature can be set if this function is not desired (e.g. -20°C)
Setting FS Value range Description
Collector-Min A
PA3
30 °C -20 ... 50 °C minimum collector temperature
(turn-off condition)
Collector-Min E
PA3
35 °C -20 ... 50 °C minimum collector temperature
(turn-on condition)
5.9 Start up function
There are collectors, in particular vacuum tube collectors, but also conventional flatlaying collectors, where measuring of the carrier medium temperature is insufficiently
supported. A start-up function makes sense for systems with such collectors in order to
determine the carrier medium temperature.
The temperature at the collector sensor only slowly increases even if the collector is
illuminated by the sun. The start-up function can be activated for these cases:
This function can only be used if the collector temperature is below the turn-on threshold
but above the collector minimum temperature. In case that the temperature at the
collector sensor increases by 5K within 10 minutes, the pump is turned on briefly (20 s).
This leads to a transport of heat, and with sufficient radiation to an excess of the turn-on
condition at the collector sensor. This start-up function is repeated every 20 min if
necessary.
Function FS Description
Start up function
CO3 -> F03- 1
0 Cyclic test-step switching of the collector pump (s)
5.10 Forced pump operation (blocking protection)
If the pumps have not been turned on for 24 hours, they are turned on by force on
midday to prevent that they get stuck in long term idle periods.
Function FS Description
Forced pump operation
CO3 -> F01- 1
0 Regular forced pump operation
The forced collector pump operation is suppressed if the related collector sensor
measures a temperature below 10 °C.
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5.11 Collector Antifreeze
Solar systems with no antifreeze medium can be run in regions where frost just appears
sporadically. In case that the temperature really should drop below the dew point, the
controller is able to turn on the pump in order to prevent a freezing of the collector.
Operation: The collector pump is turned on if the temperature at the collector sensor
drops below 5 °C. At 6 °C it is turned off again, but only after the minimum running time
set elapsed.
The following icon additionally appears if the pump is turned on for antifreeze
purpose.
Function FS Description
Collector antifreeze
CO3 -> F02- 1
0 Collector antifreeze
In system variants with two collector arrays and switching valve (system variant 2.... ),
the collector array where the temperature falls below the dew point last is not flown
through before the temperature in the first array has increased.
5.12 Two collector arrays
Depending on the structural conditions, it may be necessary to install the two collectors
each pointing in a different direction. The controller can be used in systems operating in
parallel mode with two collector arrays with one array having priority over the other. This
is basically predetermined by configuring the system to operate with two collector pumps
or with one pump and a switching valve.
The heat transport is controlled independently for each array according to the above
described criteria. In system variants with two collector arrays and switching valve, the
array with the higher energy supply has precedence.
In system variants with two collector arrays and two collector pumps, it is generally
recommended to install a collector return flow sensor CRF. Only by knowing the return
flow temperature, it can't reliably be determined whether the power is delivered to the
storage or not.
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Notes:
This function leads to transferring the heat out of the storage to the collector. It is
only suitable for regions with mild climate. The storage may not be able to provide
sufficient energy during strong freeze periods to protect the collector from freezing.
This function should not be used in systems with antifreeze.
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Setting FS Value range Description
Array minimum
running time
PA3
60 s 0...1800 s Minimum running time for array before
switching
5.13 External heat exchanger
When operating installations with system separation of collector and storage tank, an
external heat exchanger may be installed. An additional exchanger pump CTP is
required in this case.
Turn-on condition: The start of the exchanger pump CTP is delayed by the setting 'turnon delay CTP', if the temperature difference between collector and storage still matches
the turn-on condition after one of the collector pumps CP1/CP2 have been turned on. If
the temperature difference drops below the turn-on condition after the collector pump
CP1 or CP2 has been turned on, the exchanger pump is not turned on.
Turn-off condition: The exchanger pump CTP is turned off with a defined delay 'CTP
post-run time' once the turn-off condition for the collector pump CP1 or CP2 has been
reached.
The turn-on delay and the post-run time depend on the system (pipe length, flow rate,
exchanger capacity).
Setting FS Value range Description
Turn-on delay CTP 120 s 0 to 250 s Turn-on delay for the collector exchanger
pump CTP
Post-run time CTP 10 s 0 to 250 s Post-run time for the collector exchanger
pump CTP
An optional collector flow temperature sensor CVF located in the collector circuit may be
used to reduce the turn-on delay and the post-run time in order to increase the efficiency
of the solar system. The exchanger pump CTP is turned on once the collector flow
sensor has reached the turn-on condition (temperature difference between collector flow
and storage tank) and one of the collector pumps CP1/CP2 is running.
Function FS Description
CVF for CTP
CO3 -> F09- 1
0 Collector flow temperature sensor CVF for heat
exchanger pump CTP active
CO3 -> F07 – 1 - (CVF) required
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5.14 Auxiliary heating with secondary heat generator
An additional heat generator is required in several systems where a solar fraction of
100% can't be expected. The secondary heat generator may be an oil or gas boiler, an
electric cartridge heater or a district heating network.
Scheduled time ranges to hold a specific stand-by temperature can be set for nominal
(day-time) and reduced (night-time) operating mode.
Once the temperature falls below the programmed set-point for the storage tank, the
secondary heat generator is activated and remains active until the temperature at the
storage tank sensor SF1 reaches the set-point again.
The setting 'Offset with CP On' can be used to specify that the auxiliary heating is only
turned on if the storage temperature is considerably too low (e.g. 20K), in cases where
one of the collector pumps CP1/CP2 is running. Hereby it is possible to use an
energetically more favourable heat source with just a slight impairment of comfort. The
collector circuit has no impact on auxiliary heating if this parameter is set to 0K (default
factory setting).
Secondary heat generators allow thermal disinfection.
Setting FS Value range Description
Day-time
storage tank
set-point
45 °C 5 to 90 °C Storage tank temperature set-point
for nominal operating mode (day-time)
Night-time
storage tank
set-point
10 °C 5 to 90 °C Storage tank temperature set-point
for reduced operating mode (night-time)
Hysteresis 5 K 0 to 30 K Hysteresis for storage tank temperature
Offset with
CP On
0 K 0 to 20 K Auxiliary heating delay temperature difference
with running collector pump
5.15 Raise return flow of external heating system
A considerable interest of solar thermal systems is designed not with solar cash ratio of
100%, but the solar thermal is of 'only' a secondary energy source. Hence, it makes
sense to create the possibility for the typical boiler heating systems, to offer a heating
support about a heating circuit flow temperature increase.
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5.15.1 Main principle
A boiler or an other heat source is a primary energy
source for heating circle and domestic hot water
preparation. This primary energy source works selfsufficiently, therefore the compact solar controller
SOL3-7 has no influence on their function.
The heating circuit return flow is equipped with the
sensor RüF. An switching valve RUV enables to
route the heating circuit return flow through the solar
warmed up storage tank.
The switching valve RUV becomes active if the
storage tank temperature SF1 exceeds the heating
circuit return flow temperature (RüF) at least a
adjusted value return temperature increase offset.
If the heating circuit pump UP is active, the heating
circuit return flow is warmed up, so that less energy
must be supplied by the primary energy generator.
5.15.2 Implementation
The range of the function described in chapter Temperature difference controller (page
52) is not active after reset to factory default settings resp. Setting the system variant ID.
The return flow temperature sensor RüF is realised with the terminal number 2 which
was shown for heating circuit flow temperature sensor, because without heating circuit
the heating circuit flow temperature sensor has no function. The storage tank
temperature sensor SF1 (terminal number 7) will be used with no modification.
The switching valve RUV is realised with binary output DO 5 on terminal number 27
(UP). On the display the switching valve RUV is shown in the control circuit 1 with the
symbol 'mixing valve up' , not as a heating circuit circulation pump.
In the settings level CO3 is to adjust the return flow temperature increase offset as
Temperature difference set point. The hysteresis is fixed to +/- 2 K and is not adjustable.
The functionality raise return flow is not prevented about usage schedule, summer
operating mode or other functions.
The state of the binary output to control the switching valve RUV (named TdS) can be
changed in the manual operating mode.
Functions FS Configuration
Temperature difference control
(TDR)
0 CO3 -> F10 – 0 Off (1 On)
Function block parameter FS Range
Temperature difference set point 10K -30...+160 °C
Reference input 2 Terminal number 1...9
Controlled input 7 Terminal number 1...9
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6 Domestic water circuit functions
6.1 Domestic water heating in storage tank
The domestic water circuit allows setting the desired temperature the water should be
heated up to by means of auxiliary heating.
Setting FS Parameter level / Value range
Set-point domestic water
Daytime Operation
45 °C PA4 / 5 to 90 °C
Set-point domestic water
Night-time operation
10 °C PA4 / 5 to 90 °C
Differential gap 5 K PA4 / 0 to 30 K
6.2 Thermal Disinfection of the storage tank
A usage schedule is used in systems with domestic water heating to perform a thermal
disinfection in order to reduce the Legionella risk. The storage tank with storage sensor
SF1 is heated up to defined the Disinfection temperature. The process begins at the
programmed time Start time and ends not later than the programmed Stop time.
In systems with solar domestic water heating, thermal disinfection is performed outside
scheduled time ranges depending on the solar gain. The controller monitors the storage
temperatures and disinfection intervals in order to reduce the consumption of additional
energy (auxiliary heating).
Too high temperatures due to thermal disinfection may cause limescale that can
negatively affect the performance of the heat exchanger.
Function FS Description
Thermal disinfection
Day of week
Start time
Stop time
Disinfection temperature
0
1
00:00
00:00
70 °C
CO4 -> F14- 1 - Thermal disinfection
Actuation day(-s) / 1...7 or 1-7 (1..Monday,...)
Beginning of thermal disinfection
End of thermal disinfection
Min. storage temperature for thermal disinfection /
50 to 90 °C
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7 System wide functions - all system variants
7.1 Automatic summer/winter switching
Switching is done automatically on the last Sunday in March at 2:00 am and on the last
Sunday in October at 3:00 am.
Functions FS Configuration
Summer/winter switching 1 CO5 -> F08 - 1
7.2 Antifreeze
Antifreeze measures become effective once the outdoor temperature drops below the
programmed temperature threshold. The differential gap to deactivate the antifreeze
measures is 1°C.
I. Antifreeze program I (reduced antifreeze): Antifreeze measures are only initiated if all
heating circuits are running in stand-by mode. All circulation pumps are turned on by
force and their flow temperature is set to 10°C. The circulation pump for the domestic
water circuit is only turned on by force if the rotary switch is positioned at stand-by
mode for all heating circuits. However, the storage tank is always recharged to 10°C
in cases where the storage tank temperature drops below 5°C.
II. Antifreeze program II: The circulation pumps for the heating circuits are generally
turned on by force. The flow temperature set-points of all heating circuits in holding
operating mode or stand-by mode are set to +10 °C. The circulation pump for the
domestic water circuit is generally turned on. If the storage tank temperature drops
below +5 °C, the storage tank is recharged to +10 °C.
Functions FS Configuration
Antifreeze program I
3 °C
CO5 -> F09 - 0
Antifreeze threshold/ –15 to 3 °C
Antifreeze program II
3 °C
CO5 -> F09 - 1
Antifreeze threshold/ –15 to 3 °C
Minimum temperature of storage
tank
10 °C
Note: Antifreeze mode for a pump, a heating circuit or a domestic water circuit is only
active if the antifreeze symbol is shown in the display. Antifreeze monitoring is
deactivated in stand-by mode in systems with fixed value control without outdoor
sensor.
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7.3 Locking manual operating mode
This function can be used to lock the manual operating mode in order to protect the
heating system. When activated, the system is run in automatic mode when the rotary
switch is positioned at .
Functions FS Configuration
Locking manual operating mode 0 CO5 -> F21 - 1
7.4 Locking the rotary switch
When activated, the system is run in automatic mode regardless of the rotary switch
position. No further settings can be programmed using the rotary switch.
Functions FS Configuration
Locking the rotary switches 0 CO5 -> F22 - 1
7.5 Enter a valid individual access code
The standard access code can be replaced by an individual code to prevent
unauthorized function or parameter changes. The individual code can be selected from
0100 to 1900.
Procedure:
Switch to configuration and settings level.
Display shows 0 0 0 0
Enter access code 1995.
Confirm code.
Enter a valid access code.
Confirm code.
Code flashes.
Enter individual code.
Confirm entered code.
The new valid code is from now on the one confirmed.
Move the rotary switch back to the "Information level" position (left hand).
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7.6 Temperature difference controller
To applicate a raise return flow temperature of a seperate heating circuit, to realize tankto-tank transfer or to charge or discharge of heating energy there is designed one
additional temperture diffrence controller inside.
The temperature sensors used for this function may be used additionally to the defined
function in the chosen system variant (example: storage tank temperature sensors SF1
and SF2).
The relay output is fixed to terminal number 27 (UP). This define requires that the
additionally temperature difference controller is not available in system variants including
heating circuit.
Settings
Functions FS Configuration
Temperature difference control
(TDR)
0 CO3 -> F10 – 0 Off (1 On)
Function block parameter FS Range
Temperature difference set point 10K -30...+160 °C
Reference input 2 Terminal number 1...9
Controlled input 7 Terminal number 1...9
The facrory default setting of these parameteres is designated to use raise return flow
temperature of a seperate heating circuit.
Function
The switching relay output terminal number 27 (UP) becomes active, if the difference of
reference input and controlled input exeeds the temperature difference set point.
The switching relay output terminal number 27 (UP) becomes inactive, if the difference of
reference input and controlled input falls below the temperature difference set point.
The hysteresis is fixed to +/- 2 Kelvin.
In the information level sensors (reference input and controlled input) where shown
each with the terminal defined symbols. The switching output visualizes the symbol
(responsible für circuit 1 mixing valve up signal).
In “Manual operating mode” the switching output may be modified when shown the
indication 'TdS'.
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8 Malfunction
A system malfunction is indicated by a flashing icon in the display. An error message is
immediately displayed. The error level is opened by pressing the rotary pushbutton. A
larger number of error messages might eventually be retrieved by turning the rotary
pushbutton. Error messages for critical malfunctions are kept in the display loop even if
the details are not opened by pressing the rotary pushbutton.
At error level, the error messages are displayed according to the following list.
Note: After a system variant ID change, eventual error messages are suppressed for
around three minutes after the change.
8.1 Error list
Err 1 = sensor failure (chapter 8.2)
Err 2 = reserved
Err 3 = reserved
Err 4 = maximum charge temperature reached
Err 5 = reserved
Err 6 = temperature monitoring alarm(chapter 8.3)
Err 7 = unauthorized access captured (chapter 8.3)
8.2 Sensor failure
According to the error list, sensor failures are indicated by the message "Err 1" at error
level. Detailed informations can be retrieved at information level by querying the
temperature values. Each sensor icon combined with three small horizontal bars instead
of a temperature value indicate a faulty sensor. The following list describes how the
controller behaves in case of a sensor failure for each single sensor.
Flow sensor, solar circuit: If a primary flow sensor fails, the domestic water is not
heated up any more.
Storage sensor SF1/2: If one of these sensors fails, the buffer storage is not
charged any more.
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8.3 Temperature monitoring
If the temperature in one of the control circuits deviates more than 50 K from normal for
a period of 30 minutes, the error message "Err 6" is generated (temperature monitoring
alarm).
Functions FS Configuration
Temperature monitoring 0 CO5 -> F19 - 1
8.4 Error status register
The error status register is used to report controller or system failures. In modem
operating mode with error reporting function, each change of error status triggers a dial
up connection to the building control system (BCS) to report the status change. The
errors that should affect the error status register can be set after having entered the
access code 0025.
The default factory setting „465“ causes that only the error messages in bold in the
following table affect the error status register.
Error message Description Decimal value FS Exampl
e
Err 1 Sensor failure 1 1 1
Err 2 - 2
Err 3 - 4
Err 4 Max. charging temperature reached 8
Err 5 16 16
Err 6 Temperature monitoring alarm 32 32
Err 7 Unauthorized access 64 64
Err 8 - 128 128
Err 9 - 256 256
Sum Sum
Factory default setting, access code 0025 = 465
Example: Error status register if sensor failure and alarm = 33
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8.5 SMS delivery in case of a system failure
If a dial up modem is connected to the KOM232M (Mat-No. 11988) communication
module (chapter 8.1), the controller is able to send error messages to a cell phone. An
SMS is sent as soon as a failure is captured in the error status register. The message
looks like this on the display of the cell phone:
[Date] [Time]
[Call no. of the controller]
Reglerstörung (Controller failure)
SOL3 # [Controller ID]
The time stamp [Date], [Time] is generated by the SMS provider rather than by the
controller. A detailed error message is not available.
under Info 2 (chapter 1.7).
If Modbus and modem error reporting are active at the same time, the connection to the
BCS is built up in the first place followed by the SMS delivery. If the connection to the
BCS fails, the system attempts to build it up for the programmed number of times.
The providers SMS service numbers (TAPnr) in Germany at the time of writing are:
D1: 0171 252 1002 (0171 252 1099 alternatively available)
E-Plus: 0177 1167
Cellnet (UK): 0044 786 098 0480 – mobile comm. network of D1, D2, O2 and E-Plus
0 respectively the pre dial number has to be prepended in telephone installations with
secondary structure. The subscriber number (HAndi) has to be entered as follows: 49
xxx yyyyyy, with xxx for 160, 171 or other valid network prefix and yyyyyy for the specific
recipient number.
Functions FS Configuration
SMS 0 CO6 -> F08 – 1
Modem function 0 CO6 -> F03 – 1
Automatic modem configuration 0 CO6 -> F04 – 1
Parameter* FS Parameter level / Value range
Modem dialling pause (P) 5 min PA6 / 0 to 255 min
Modem time out (T) 5 min PA6 / 0 to 255 min
Number of dial attempts (C) 15 PA6 / 0 to 255
SMS service numbers (TAPnr) - PA6 / max 22 digits; 1, 2, 3, ..., 9, 0;
„-“ End of string; „P“ Pause
Cell phone number (HAndi) - PA6 / max 22 digits; 1, 2, 3, ..., 9, 0;
„-“ End of string; „P“ Pause
* chapter 9.6 („ Description of the adjustable communication settings“)
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9 Communication
The heat pump controller SOL3 can be connected to a building control system via an
optional communication module. A suitable software allows to set up a complete building
control system for process visualization and communication.
The following communication variants are available:
– Operation with dial up modem with communication module KOM232M
An automatic communication is basically only initiated in case of failures. The controller
operates in an autonomous way, but can be contacted, read out and adjusted at any
time via modem.
– 2-wire bus operation with communication module iCon485
– RS-232 connection operation with communication module KOM232PC
1 - optional communication module KOM232PC
2 - optional communication module RS-485
3 - optional communication module KOM232M
4 - optional data modem DataMod11
5 - optional ModBus-MBus-Gateway
Note: The operating software can be updated via modem or cable if Modbus is
activated with CO6 -> F01 - 1.
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9.1 Communication module KOM232PC
The connector for the optional communication module (Mat-No. 11988) is located on
the left side (front panel view) inside the controller housing (RJ45 connector). The
operation of the controller in conjunction with the communication module KOM232PC
requires the use of appropriate communication tools (software).
Wiring diagram for communication module KOM232PC
9.2 Communication module iCon485
The connector for the optional communication module iCon485 (Mat-No. 11994) is
located on the left side (front panel view) inside the controller housing (RJ45 connector).
The operation of the controller in conjunction with the communication module iCon485
requires a permanent bus connection (data cable).
Each controller and control unit is wired to an open token ring. The end of the wire is
connected to the building control system via an RS-485/RS-232 converter (e.g.
CoRe01).
The bus connection range (cable length) is limited to a maximum of 1200 m. A maximum
of 126 devices can be connected to such a segment. In segments with a longer distance
(> 1200m) or in segments with more than 126 devices, repeater have to be installed to
maintain the signal strength (e.g. CoRe01). On a bus with 8-bit addressing, a maximum
of 246 devices can be connected and addressed.
In times where the communication between the building control system and controller is
interrupted, interventions of the building control system into dynamic processes can be
influenced with the function building control system monitoring for a limited period of
time.
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As long as valid Modbus queries are captured, the controller resets the time monitoring;
but after a lapse of 30 minutes all collective level bits are reinitialized to "autonomous".
ATTENTION!
When installing, the relevant standards and regulations related to lightning protection
and over-voltage/voltage surge protection have to be attended to.
Functions FS Configuration
Modbus 1 CO6 -> F01 – 1
Modbus with 16-bit addressing 0 CO6 -> F02 – 1
Modem function 0 CO6 -> F03 – 1
Automatic modem configuration 0 CO6 -> F04 - 1
Blocking the BCS dial up 0 CO6 -> F05
BCS dial up on corrected failures 0 CO6 -> F06
Control system monitoring 0 CO6 -> F07 – 0
Setting FS Parameter level / Value range
Station address (ST) 255 PA6 / 1 to 247
with CO6 -> F02 - 1: 1 to 32000
Wiring diagram for communication module iCon485
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9.3 Communication module KOM232M
The connector for the optional communication module KOM232M (Mat-No. 11989) is
located on the left side (front panel view) inside the controller housing (RJ45 connector).
The communication module KOM232M allows the connection of a dial up modem to the
controller.
A dial up modem is required when connecting the controller to the telecommunication
network. This way, the controller operates autonomously and is enabled to send a call to
the building control system (BCS) in case of failures. Additionally, the BCS can call the
controller to read it out and to send new data providing the valid access code after
having written the holding register No. 40145.
Note: Once the holding register No. 40145 has been written for three consecutive times
accessed with an invalid code, the controller cuts the modem connection immediately
and generates an error message "Err 7" (Unauthorized access). Therewith a call to the
configured building control system as well as an SMS delivery are triggered. Bit D6 is
deleted as soon as the error status register is read out by the building control system
and the connection is terminated.
The function modem dial up blocking can be selected in special cases in order to
suppress dial ups to report failures. With the function modem dial up on corrected
failures the BCS is additionally informed if a previously reported failure no longer exists.
By using the automatic modem configuration function, the modem connected to the
controller needs no further configuration; this is done automatically by the controller.
Functions FS Configuration
Modbus 1 CO6 -> F01 – 1
Modbus with 16-bit addressing 0 CO6 -> F02 – 1
Modem function 0 CO6 -> F03 – 1
Automatic modem configuration 0 CO6 -> F04 - 1
Blocking the BCS dial up 0 CO6 -> F05
BCS dial up on corrected failures 0 CO6 -> F06
Control system monitoring 0 CO6 -> F07 – 0
Setting FS Parameter level / Value range
Station address (ST) 255 PA6 / 1 to 247
with CO6 -> F02 - 1: 1 to 32000
Modem dialling pause (P) 5 min PA6 / 0 to 255 min
Modem time out (T) 5 min PA6 / 0 to 255 min
Number of dial attempts (C) 15 PA6 / 1 to 255
Phone number of the BCS (TELnr) - PA6 / max 22 digits; 1, 2, 3, ..., 9, 0;
„-“ End of string; „P“ Pause
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Wiring diagram for communication module KOM232M
9.4 Data Modem DataMod11
The connector for the optional data modem DataMod11 (Mat-No. 11991) is located on
the left side (front panel view) inside the controller housing (RJ45 connector). Settings
and notes from chapter 9.3 remain valid.
Wiring diagram for DataMod11
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9.5 ModBus-MBus-Gateway
The connector for the optional ModBus-MBus-Gateway (Mat-No. 11997) is located on
the left side (front panel view) inside the controller housing (RJ45 connector). The
operation of the controller in conjunction with the ModBus-MBus-Gateway requires a
permanent bus connection (data cable).
The ModBus-MBus-Gateway is used to integrate M-Bus meters into building control
systems of HVAC system networks. The ModBus-MBus-Gateway allows an easy to
handle connection of heat, electricity or water flow meters. Up to 6 meter according to
EN 1434-3 can be connected.
Settings and notes from chapter 9.2 remain valid.
Wiring diagram for ModBus-MBus-Gateway
9.6 Description of the adjustable communication settings
Station address (ST)
This address is used to identify the controller in bus or modem operating mode. Each
address must be assigned only once within a system.
Modem dialling pause (P)
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A dialling pause (approx 3 to 5 minutes) should be kept within two BCS/SMS provider
calls in order not to permanently stress the telecommunication network. The modem
dialling pause is programmed as period between two dial attempts.
Modem time out (T)
If connected to the BCS, but not addressing a Modbus data point, the controller closes
the connection after the modem has timed out. If the error status register has not been
read out during the connection to the BCS, the controller attempts to reconnect to the
BCS after the programmed modem dialling pause (P) to repeat the procedure. The time
setting is irrelevant for SMS delivery.
Number of dial attempts (C)
The dial attempts are repeated in compliance with the modem dialling pause as long as
the BCS/SMS service centre line is occupied respectively the call initiation has not been
reset by the building control system. Unsuccessful connection attempts are indicated by
"OFF" at the advanced information level. The dialling attempts counter is automatically
reset at 12:00 followed by new attempts.
Resetting the call initiation = reading out the error status register (HR40150)
Phone number of the BCS (TELnr)
The phone number of the building control system, including area code – if needed – has
to be entered here. Short dialling breaks can be provided by entering a "P", where each
P equals 1 second, the end of the dialling string has to be indicated by entering „–“. The
phone number can be up to 22 characters long.
Example phone number „069, 2 seconds break, 4009, 1 second break, 0“:
0 6 9 P P 4 0 0 9 P 0 – (= 11 characters)
9.7 Memory module
The memory module ParaMem (Mat-No. 17090) is especially suitable to transfer all
programmed data from one SOL3 controller to several other SOL3 controller. The
connector for the memory module is located on the left side (front panel view) inside the
controller housing (RJ45 connector). If successfully plugged in, “S3 SP” will be displayed
on the screen of the controller. If the memory module already contains data from another
SOL3 controller, they can be accessed by turning the rotary pushbutton to "SP S3".
By pressing the rotary pushbutton in "S3 SP" position, the current controller
settings are copied to the module.
By pressing the rotary pushbutton in "SP S3" position, the current module data is
copied to the controller and the display of "LESE".
The displayed bar graph is used as progress bar during the transfer. "I.O." is displayed to
confirm the completion of a successful data transfer. The memory module can now be
disconnected by unplugging it.
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Note: By activating the function block CO6 -> F04 - 1, the connected modem is
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9.8 55Viewer for visualization and remote maintenance.
The software 55Viewer (Mat-No. 37160) is available to visualize and remote maintain the
system.
The software allows to display a graphical representation of the complete system
installation with all sensor data and all switching states of the pump and valve outlets.
Various tabs are available to display all controller settings and data, programmed
schedules and heat meter data. 55Viewer also allows to modify controller parameters.
A personal computer with the following minimum requirements is needed:
• PC with a Pentium II processor or equivalent CPU (300 MHz or higher, 500
MHz or more are recommended)
• Serial port respectively an appropriate modem for dial up connections
• SVGA graphics card (min. resolution 800x600)
• CD-ROM drive
• Min 64 MB of RAM (recommended 128 MB)
• Min 150 MB of free hard disk space
• One of Windows 2000, XP, Vista or Windows 7 as OS
Figure: Example similar to solar thermal controller SOL3-7
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9.9 Data Logging
The data logging module DataMem (Mat-No. 37699) allows saving the following
controller data in two minute intervals:
Sensor readings
Control signals [%]
Switching states of the pump outlets
Error status register and archive
Access to controller settings
The connector for the memory module is located on the left side (front panel view) inside
the controller housing (RJ45 connector).
Once the memory chip of the data logging module is full, approx. after 8 days, the
module starts overwriting the oldest data. The current memory capacity can be viewed in
the advanced information level, it is the second value displayed (range: 0 to 6035) in
menu item "Info 2" (chapter 1.7). After plugging in the data logging module, the value is
not displayed before the first scanning cycle is complete.
The saving cycle interval in minutes, range from 1 to 99 minutes, can be programmed
after entering the access code 0010. The default factory setting of 2 corresponds to a
two minute cycle interval.
The data can be analysed using the PC based software "Data Logging Viewer". The
USB converter 3 (Mat-No. 11995) which is shipped with the viewer software is required
to connect the logging module to a PC.
A device description file is also required to display the data correctly.
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10 Mounting
The device consists of a controller housing containing the electronics assembly and a
mounting panel with the terminal strips. It is suited for control panel, wall and DIN rail
mounting (Figure 13).
Control panel mounting
1.Loose both screws (1).
2.Separate housing and mounting panel.
3.Cut out a rectangle of 138 by 92 mm (W x H) from the panel.
4.Insert the housing into the cut-out.
5.Use the screws (2) to fix the housing onto the panel.
6.Perform electrical connection according to chapter 11.
7.Remount housing.
8.Tighten both screws (1).
Wall mounting
1.Loose both screws (1).
2.Separate housing and mounting panel.
3.Eventually drill holes at the predefined positions with the given dimensions. Fix
mounting panel with 4 screws.
4.Perform electrical connection according to chapter 11.
5.Remount housing.
6.Tighten both screws (1).
DIN rail mounting
1.Hook the spring-loaded hooks (4) to the bottom of the DIN rail (3).
2.Slightly push up the housing and pull the upper clips over the rail.
3.Loose both screws (1).
4.Separate housing and mounting panel.
5.Perform electrical connection according to chapter 11.
6.Remount housing.
7.Tighten both screws (1).
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Figure 12 - Mounting
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11 Electrical connection
ATTENTION!
VDE and utility specifications and regulations have to be attended to when
wiring and connecting the controller. Therefore, this task has to be
performed by qualified personnel only!
11.1 Notes for wire installation
230 V-supply lines and signal lines must be routed in separate cables! To increase
noise resistance, a minimum distance of 10 cm between each cable has to be kept!
This spatial separation has to be considered also in control cabinets!
The cables for digital signals (bus lines) and analogue signal lines (sensor lines,
analogue outputs) must also be routed in separate cables!
It is recommended to use shielded cables for analogue signal lines in systems with
high electromagnetic noise level. The shield is to be single-earthed either at input or
output of the cabinet with a large area contact! The central earthing point is to be
connected to the protective earth conductor PE with the shortest possible cable
(>= 10 mm² in diameter)!
Inductances in the cabinet, like contactor coils, are to be supplied with appropriate
snubber circuits (RC snubber)!
High field strength cabinet components like transformers and frequency inverters
should be shielded by separating plates with good earthing.
11.2 Surge Protection Measures
Signal lines routed outdoor or over long distances should be surge protected! For
bus lines, such measures are essential.
The shielding of signal lines laid outdoor must be conductive and double-earthed.
The surge arrester has to be connected to the input of the control cabinet.
11.3 Connecting the controller
The connection is performed according to the following wiring diagram. The housing has
to be opened to connect the cables. The housing has marked feedthroughs on the upper
or lower side or on the mounting panel that have to be broke through and then supplied
with the appropriate grommets respectively screwing.
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11.3.1 Connecting the sensors
Wires with a minimum diameter of 2 by 0.5 mm² may be connected to the terminal strips
on the mounting panel.
Connecting the actuators
3-point-/2-point duty outputs: moisture proof cables with a minimum diameter of 1.5 mm²
are to be connected to the terminals of the controller output. It is recommended to check
the direction of rotation at start-up time.
Note: The motor actuators are not automatically supplied with power from the
controller. They can be connected to an external power source via terminal 28. If this is
not desired, jumper have to be set from terminal 18 to 28.
11.3.2 Connecting the pumps
All wires with a minimum diameter of 1.5 mm² are to be connected to the controller
according the wiring diagram. The relay outputs are isolated/potential-free contactors,
thus not supplied with power from the controller. Therefore, the terminals 20, 22 and 25
– and eventually 28 have to be connected to L1 (terminal 18).
11.3.3 Legend for connection diagram
CRF Collector return-flow sensor CP Collector pump
CVF Collector flow sensor SP Storage (charging) pump
SF Storage sensor CUV Collector switching valve
CF Collector sensor SUV Storage switching valve
VST-Imp. Volume flow impulses RUV Return flow switching valve
CTP Collector exchanger pump
NH Auxiliary heating
ZP Domestic water-
circulation pump
flow 0..10V output for
pump rotation speed
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11.3.4 Wiring diagram
Note: The diagram shown on the back of the controller housing applies to most of the
possible system variants. Certain system variant configuration require a different usage
of single relay outputs. The following table shows the assignment of functions to
terminals for all system variants.
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11.3.5 Terminal assignment for Outputs
System variant
T. 21
T. 23
T. 24
T. 26
T. 27
T. 29
T. 30
I - I.0.0
CP1
I - I. I.0
CP1
NH
I - I.2.0
CP1
ZP
I - I.3.0
CP1
ZP
NH
I - 2.0.0
CP1
SUV
I - 2. I.0
CP1
SUV
NH
I - 2.2.0
CP1
SUV
ZP
I - 3.0.0
SP1
SP2
I - 3. I.0
SP1
SP2
NH
I - 3.2.0
SP1
SP2
ZP
I o I.0.0
CP1
CTP
I o I. I.0
CP1
CTP
NH
I o I.2.0
CP1
CTP
ZP
I o 2.0.0
CP1
CTP
SUV
I o 3.0.0
CP1
SP1
SP2
2 - I.0.0
CP1
CUV
2 - I. I.0
CP1
CUV
NH
2 - I.2.0
CP1
CUV
ZP
2 - 2.0.0
CP1
CUV
SUV
2 - 3.0.0
CUV
SP1
SP2
2 o I.0.0
CP1
CUV
CTP
3 - I.0.0
CP1
CP2
3 - I. I.0
CP1
CP2
NH
3 - I.2.0
CP1
CP2
ZP
3 - 2.0.0
CP1
CP2
SUV
3 o I.0.0
CP1
CP2
CTP
11.3.6 Terminal assignment for inputs
The assignments shown in the wiring diagram on page 69 applies to all system variants.
Not required sensors don't need to be connected.
Inputs that are not required by the particular system variant may be connected, and
information may be displayed at extended information level (chapter 1.7). This allows
displaying temperature data of other sensors for information purposes, like flow and
return flow temperature of an attached wood-fired boiler and other.
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12 Appendix
12.1 Function block lists
CO3: Solar circuit
F Function FS Function block parameter description/value range (factory default
setting)
01 Forced pump
operation
0 CO3 F01 = 1 - Regular forced pump operation active
see section 5.10
02 Collector
antifreeze
0 CO3 F02 = 1 - Antifreeze active
see section 5.11
03 Start up function
(tube collector
function)
0 CO3 F03 = 1 - Start-up function active
see section 5.9
04 Rotation speed
control
CO3 F04 = 1 Rotation speed control active
see section5.6
05 Solar heat meter 0 CO3 F05 = 1 - Collector performance heat meter
see section 5.5
Function block parameter:
Heat capacity at 25°C, Heat capacity at 100°C
06 Heat meter-
impulse source
0 see section 5.5
CO3 F06 = 1 - Volume flow rate sensor active
Function block parameter: Impulse value
CO3 F06 = 0 - Volume flow rate replacement value active
Function block parameter: Volume flow rate replacement value
07 CVF CO3 F07 = 1 - Collector flow sensor active
see section 5.3
08 CRF CO3 F08 = 1 - Collector return flow sensor active
see section 5.3
09 CVF for CTP 0 CO3 F09 = 1 -Collector flow sensor CVF for exchanger pump
CTP active
see section 5.13
10 Temperature dif-
ference controller
0
10K
2
7
CO3 F10 = 1 Temperatur difference controller active
Function block parameter
Temperatur difference set point / -30 bis 160°C
Reference input / Terminal number 1...9
Controlled input / Terminal number 1...9
F Function block number, FS Factory default setting
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CO4: Domestic water circuit
F Function FS Function block parameter description/value range (factory default
setting)
14 Thermal
disinfection
0 CO4 -> F14 - 1 only with CO4 -> F01 - 1
Function block parameters:
Day of week / 1, 2, …, 7, 1–7 (3)
Start time / 00:00 to 23:45 (00:00),
Stop time / 00:00 to 23:45 (04:00)
Disinfection temperature / 60 to 90 °C (70 °C)
Boost of set-point / 0 to 50 °C (10 °C)
with start time = stop time Choice: bE / 1, 0 (1)
F Function block number, FS Factory default setting
CO5: system wide functions (all system variants)
If the controller signalizes CO5 -> F00 - 1, any access to return flow, volume flow rate and power
settings is locked.
F Function FSFunction block parameter description/value range
(factory default setting)
01
02
03
Sensor initialization 1 Pt 1000
04 Summer operating mode
(OM)
0 CO5 -> F04 - 1: Activation of time-dependent summer
operating mode;
Function block parameters:
Beginning of summer period /01.01 to 31.12 (01.06)
Number of days needed for activation / 1 to 3 (2)
End of summer period / 01.01 to 31.12 (30.09)
Number of days needed for deactivation / 1 to 3 (1)
Outside temperature threshold /0 to 30 °C (18 °C)
05 Delayed outside temperature
compensation at dropping
temperatures
0
06 Delayed outside temperature
compensation at increasing
temperatures
0
CO5 -> F05, 06 - 1: Function block parameter:
Delay / 1 to 6 °C/h (3 °C/h)
08 Summertime-/ Wintertime-
switching
1
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F Function FSFunction block parameter description/value range
(factory default setting)
09 Antifreeze program II 10CO5 -> F09 - 0: Antifreeze program I (reduced anti-
freezing) Function block parameter:
Anti-freezing threshold / –15 to 3 °C (3 °C)
CO5 -> F09 - 1: Antifreeze program, Function block
parameter:
Anti-freezing threshold / –15 to 3 °C (3 °C)
19 Temperature monitoring 0 CO5 -> F19 - 1: Temperature monitoring active
20 Sensor calibration 1 CO5 -> F20 - 1: Setting all sensor calibration values
CO5 -> F20 - 0: Deleting sensor calibration values
21 Locking manual operating
mode
0 CO5 -> F21 - 1: In manual operating mode switch
position automatic operating mode is driven
22 Locking the rotary switches 0 CO5 -> F22 - 1: Rotary switch has no functionality
F Function block number, FS Factory default setting
CO6: Modbus
F Function FS Function block parameter description/value range (factory
default setting)
01 Modbus 1 CO6 -> F01 - 1: Modbus active
02 Modbus-16-bit
addressing
0 only with CO6 -> F01 – 1
CO6 -> F02 - 1: 16-bit addressing,
CO6 -> F02 - 0: 8-bit addressing
03 Modem function 0 CO6 -> F03 - 1 only with • CO6 -> F01 - 1
CO6 -> F08 - 1
04 automatic
Modem
configuration
0 CO6 -> F04 - 1 only with • CO6 -> F03 - 1
CO6 -> F08 - 1
05 Blocking the
BCS dial up
0 CO6 -> F05 - 1: no dial up on failure,
only with CO6 -> F03 - 1
06 BCS dial up
on corrected
failures
0 CO6 -> F06 - 1: additional dial up on corrected failures, only
with CO6 -> F03 - 1
07 Control system
monitoring
CO6 -> F07 - 1: Reset all collective level bits to "autonomous"
on missing connection,
only with CO6 -> F01 – 1
08 SMS CO6 -> F08 - 1: SMS delivery active
F Function block number, FS Factory default setting
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12.2 Parameter list
PA3: Solar circuit parameter level
Symbol/Icon Parameter name
Value range (factory default)
Minimum running time for collector pump
0 to 1800 s (60s)
Minimum idle time for collector pump
0 to 1800 s (1800s)
Maximum storage tank temperature Turn-off condition
20 to 160 °C (60 °C)
(parameter for second storage is
additionally indicated by a '2')
Maximum storage tank temperature Turn-on condition
20 to 160 °C (58 °C)
(parameter for second storage is
additionally indicated by a '2')
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Symbol/Icon Parameter name
Value range (factory default)
Type of storage tank priority
1 to 5 (3)
Charging time for low priority storage tank
only for priority type 3
0 to 120 min (150 min)
Minimum storage temperature for storage
tank charging
only for priority type 2
5 to 90 °C (30 °C)
Maximum collector temperature
(turn-off condition)
90 to 160 °C (130 °C)
Maximum collector temperature
(turn-on condition)
90 to 160 °C (110 °C)
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Symbol/Icon Parameter name
Value range (factory default)
Minimum collector temperature
(turn-off condition)
-20 to 50°C (30°C)
Minimum collector temperature
(turn-on condition)
–20 to 50 °C (35 °C)
Minimum running time for array before
switching
0 to 1800 s (60s)
Turn-on delay for collector exchanger
pump
0 to 250 s (120 s)
Post-run time for the collector exchanger
pump
0 to 250 s (10 s)
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PA4: Storage temperature, auxiliary heating
Symbol/Icon Parameter name
Value range (factory default)
Set-point storage tank temperature, day-
time OM
5 to 90 °C (45 °C)
Set-point storage tank temperature, nighttime OM
5 to 90 °C (10 °C)
Differential gap for storage tank
temperature
0 to 30 °C (5 °C)
Auxiliary heating delay temperature
difference with running collector pump
0 to 20 °C (0 °C)
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PA5: system wide functions (all system variants)
Symbol/Icon Parameter name
Value range
Holidays
01.01 to 31.12 (chapter 1.7.1)
Vacation times
01.01 to 31.12 (chapter 1.7.2)
PA6: Modbus parameter
Symbol/Icon Parameter name
Value range
Modbus client address
1 to 247 (255)
(with CO6 -> F02 - 1 valid: 1 to 32000)
Modem dialling pause (P)
0 to 255 min (5 min)
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Symbol/Icon Parameter name
Value range
Modem time out (T)
1 to 255 min (5 min)
Number of BCS dial attempts (C)
0 to 255 (15)
Phone number of the BCS (TELnr)
max 22 digits; 1, 2, 3, …, 9, 0;
„-“ = End of string
„P“ = Pause
SMS service numbers (TAPnr)
max 22 digits; 1, 2, 3, …, 9, 0;
„-“ = End of string
„P“ = Pause
Subscriber number / Cell phone number
(HAndi)
max 22 digits; 1, 2, 3, …, 9, 0;
„-“ = End of string
„P“ = Pause
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12.3 Resistance values
Resistance values with Pt 1000-measuring element
Outdoor temperature sensor type 5227-2 for flow, return flow and storage temperature
Typ2 5277-2 (immersion sleeve required) and 5267-2 (contact sensor).
Room temperature sensor type 5257-1, type 5257-5 (room control unit).
Temperature Resistance value
with Pt1000 sensor
-40 °C
842.7 Ω
-30 °C
882.0 Ω
-20 °C
921.6 Ω
-10 °C
960.9 Ω
0 °C
1000.0 Ω
10 °C
1039.0 Ω
20 °C
1077.9 Ω
30 ° C
1116.7 Ω
40 °C
1155.4 Ω
50 °C
1194.0 Ω
60 °C
1232.4 Ω
70 °C
1270.7 Ω
80 °C
1308.9 Ω
90 °C
1347.0 Ω
100 °C
1385.0 Ω
110 °C
1422.9 Ω
120 °C
1441.7 Ω
130 °C
1499.4 Ω
140 °C
1535.8 Ω
150 °C
1573.1 Ω
160 °C
1610.4 Ω
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12.4 Technical specifications
Inputs 9 Inputs for temperature sensor Pt 1000 or BE
1 binary input for flow volume signal
1 analogue input 0 to 10 V (alternatively analogue output)
Outputs 3 isolated/potential-free relay outputs with varistor
(snubber),
Max power handling 250 V AC, 2A (at cos j = 1)
(Alternative version: a relay as semiconductor relay)
1 Analogue output 0-10 V (rotation speed control)
Optional interfaces 1 Modbus interface RS-232 for modem connection via
communication module KOM232M
1 Modbus interface RS-485 for two-wire bus connection
via communication module iCon485
(Modbus RTU protocol, data format 8N1, sidewise RJ45
connector)
1 x Interface for data logging module
1 x Interface for memory module
Operating voltage 85 to 250 V, 48 to 62 Hz, max. 3.5 VA
Ambient temperature 0 to 40 °C (operating),
–10 °C to 60 °C (storage and shipping)
Type of protection IP 40 according to IEC 529
Protection class II according to VDE 0106
Pollution degree 2 according to VDE 0110
Overvoltage category II according to VDE 0110
Humidity class F according to VDE 40040
Noise immunity according to EN 61000-6-1
Noise emission according to EN 61000-6-3
Assembly Control panel, wall and DIN rail mounting
Housing L x B x H (mm) 144 x 98 x 60
Weight approx 0.5 kg
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12.5 Accessories
Part no. Name Description
37383 SOL3-3 Solar Thermal Controller SOL3-3
11988 KOM232PC Adapter to connect the SOL3 to the RS232 plug (PC)
11989 KOM232M
Adapter to connect the modem to the SOL3
(analogue / GSM / ISDN)
11994 iCon485 Adapter to connect the SOL3 to a RS485 bus
11991 Data-Mod11
Data modem to connect to the Public Switched
Telephone Network (PSTN)
11993 ModTCP Modbus-TCP-Gateway
11996 CoRe01 Converter / Repeater for RS232 or RS485 interfaces
11998 SA5000 RS485 Surge protection
11995 USB-CO3
RS485 to USB converter 3,
Software Datalogging-Viewer included
37699 DataMem
Data logging module to capture controller data, directly
connected to the controller
17090 ParaMem
Parameter saving module for controller parameter
transfer
37160 55Viewer Remote control software 55Viewer
11997 MBus-ModBus MBus-ModBus Converter for up to 6 MBus-meter
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12.6 Function block settings in configuration levels
CO1
CO3
CO4
CO5
CO6
F01
F02
F03
F04
F05
F06
F07
F08
F09
F10
F11
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
F22
F23
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12.7 Abbreviations
AF Outdoor sensor
Sys. System
AT Outdoor temperature
BA Binary output
BE Binary input
CO Configuration level
EB Installation and operating manual
F Function block
HK Heating circuit
GLT Building master control system / station
Kl Terminal
KW Cold water
PA Parameter level
RF Room sensor
Rk Control circuit
RüF Return-flow sensor
SF Storage sensor
SLP storage tank charge pump
t time
T Temperature
TdS Temperature difference switch
TLP Exchanger charging pump
TWE Domestic water heating
UP Circulation pump
VF Flow Sensor
FS Default factory setting
WW Hot water
ZP Circulation pump
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12.8 Access codes
I732
General parameter setting and configuration (factory setting)
I999
Locking / unlocking the extended information level
I995
Changing the access code for parameter setting and configuration
I99 I
Load default factory settings
0025
Changing error display FSR
00 I0
Changing data logging interval
0002
Reboot
12.9 Notes
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KT-Elektronik GmbH
Berlinickestrasse 11
12165 Berlin
Telephone: (030) 79 08 05-0
Telefax: (030) 79 08 05-20
e-mail: info@kt-elektronik.de
Internet: http://www.kt-elektronik.de
EB_37383_SOL3-3_EN002
05/2011
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