Technische Alternative uvr1611 User manual

UVR 1611
Version A4.03 EN
Manual version 2
Freely programmable universal
controller
Operation
Programming
Installation instructions
en

NOTICE
This manual was written in order to provide the specialist with both an overview of the various control
possibilities of the unit and its corresponding basic standards. It serves especially as a programming
tool while operating the unit. Even using the TAPPS – system (the „Technische Alternative Planning
and Programming System”) which you can find on our homepage www.ta.co.at, it is sometimes to
know the programming mechanisms of the unit in order to be able to make local changes remotely.
In principle however, TAPPS is still recommended. This enables the specialist to design (= program)
and parameterize the entire functionality in a graphical flow chart. In order to load the data into the
control unit, the C.M.I. or the CAN-TOUCH is required.
Example with TAPPS:
The present manual describes exclusively the direct programming of the control unit and does not
refer to TAPPS.

4
Contents
Safety requirements............................................................................................................................ 6
Maintenance ..................................................................................................................................... 6
Function mode .................................................................................................................................. 6
Planning basics ................................................................................................................................... 7
Basic standards................................................................................................................................... 8
Basic operation ................................................................................................................................. 8
Display.......................................................................................................................................... 8
Keys ............................................................................................................................................. 8
Scroll-wheel.................................................................................................................................. 9
Terms used .................................................................................................................................. 9
User interface..................................................................................................................................... 10
MENU User..................................................................................................................................... 12
MENU Date / time ........................................................................................................................... 14
MENU Measurement overview ....................................................................................................... 14
MENU Function overview ............................................................................................................... 15
The user interface editor ............................................................................................................ 16
Tips and tricks ............................................................................................................................ 18
MENU Inputs................................................................................................................................... 19
Special abilities of the inputs ...................................................................................................... 21
Connection of electronic sensors in version DL ......................................................................... 22
MENU Outputs................................................................................................................................ 23
Particularities of output 14.......................................................................................................... 25
Particularities of outputs 15, 16.................................................................................................. 26
Anti-Blocking Protection ............................................................................................................. 27
MENU Functions............................................................................................................................. 28
The basic standards of the function menu ................................................................................. 28
Input variables ............................................................................................................................ 30
Output variables ......................................................................................................................... 32
Function parameter .................................................................................................................... 34
Time programs ........................................................................................................................... 34
Function status ........................................................................................................................... 36
MENU Messages ............................................................................................................................ 37
MENU Network ............................................................................................................................... 39
Output variable ........................................................................................................................... 40
Input variable.............................................................................................................................. 41
Timeouts..................................................................................................................................... 41
Data logging ............................................................................................................................... 42
Network nodes ........................................................................................................................... 44
MENU Data administration ............................................................................................................. 45
Internal Data administration ....................................................................................................... 45
Data exchange with the PC and/or Bootloader .......................................................................... 46
Description of the function modules............................................................................................... 48
Solar control.................................................................................................................................... 49
Solar priority.................................................................................................................................... 51
Start function................................................................................................................................... 53
Cooling function .............................................................................................................................. 54
Heating circuit controller ................................................................................................................. 55
Mixer control ................................................................................................................................... 63
Comparison..................................................................................................................................... 64
Charging pump ............................................................................................................................... 65
Heating demand.............................................................................................................................. 67
DHW demand ................................................................................................................................. 70
Boiler cascade ................................................................................................................................ 72
DHW circulation .............................................................................................................................. 75
PID control (speed control) ............................................................................................................. 77
Analogue function ........................................................................................................................... 81

5
Profile function................................................................................................................................. 83
Logic function .................................................................................................................................. 85
Time switch ..................................................................................................................................... 87
Timer function.................................................................................................................................. 89
Synchronisation............................................................................................................................... 92
Heat meter....................................................................................................................................... 93
Meter ............................................................................................................................................... 95
Maintenance FN .............................................................................................................................. 96
Function control............................................................................................................................... 97
Factory setting...................................................................................................................................99
Installation instructions ..................................................................................................................100
Sensor installation......................................................................................................................... 100
Sensor lines................................................................................................................................... 101
Installing the device....................................................................................................................... 102
CAN BUS network............................................................................................................................103
Guidelines for the topology of a CAN network ..............................................................................103
Technical principles .................................................................................................................. 103
Lighting protection .................................................................................................................... 104
Examples of different network versions.................................................................................... 105
Cable selection and network topology........................................................................................... 107
Data link (DL bus) ............................................................................................................................108
Electrical connection.......................................................................................................................109
Technical data UVR1611 .................................................................................................................111
Accessories......................................................................................................................................112
Tips on troubleshooting..................................................................................................................113
Troubleshooting in the CAN network............................................................................................. 115
Information on the Eco-design Directive 2009/125/EC.................................................................115

6
Safety requirements
These instructions are intended exclusively for authorised contractors.
All installation and wiring work on the controller must only be carried out in
a zero volt state.
The opening, connection and commissioning of the device may only be
carried out by competent personnel. While doing so, they must observe all
local safety requirements.
This device is state of the art and meets all necessary safety regulations. It may only be used in ac-
cordance with the technical data and the safety requirements and regulations listed below. When
using the device, also observe the statutory and safety regulations apposite to the particular use.Any
other use will automatically void all warranty rights.
►The device must only be installed in a dry interior room.
►It must be possible to isolate the controller from the mains using an omnipolar isolating facility
(plug/socket or 2-pole isolator).
►Before starting installation or wiring work, the controller must be completely isolated from the mains
and protected against reconnection. Never interchange the safety low voltage connections (e.g.
sensor connections) with the 230 V connections. Destruction and life threatening voltages at the
device and the connected sensors may occur.
►Solar thermal systems can become very hot. Consequently there is a risk of burns. Proceed with
caution when fitting temperature sensors.
►For safety reasons, the outputs should only be left in manual mode when testing. In this operating
mode, no maximum temperatures or sensor functions are monitored.
►Safe operation is no longer possible if the controller or connected equipment exhibits visual dam-
age, no longer functions or has been stored for lengthy periods in unsuitable conditions. If this is
the case, disable the controller and equipment and secure against unintentional use.
Maintenance
If treated and used correctly, the device will not require any maintenance. Use a cloth moistened with
mild alcohol (such as methylated spirits) to clean. Never use corrosive cleaning agents or solvents
such as chloroethylene or trichloroethylene.
No components relevant to long term accuracy are subject to loading if the device is used correctly.
Consequently long term drift is extremely low. The device therefore cannot be calibrated. Thus apply-
ing any compensation is impossible.
The design characteristics of the device must not be changed during repairs. Spare parts must corre-
spond to the original spare parts and must be used in accordance with the build version.
Function mode
This unit is a very compact control system that has many applications for solar warm water and heat-
ing systems and for pumps and valves used in such systems.
The 16 sensor signals pass through overvoltage protection, a low-pass filter, and the multiplexer
before they reach the processor's A/D transformer. An adjustable reference is used to calculate the
value of the measurement signal. In addition, the computer periodically checks all of the operator's
controls, describes the display, and handles the CAN bus.
Once the temperatures have been calculated and links set, the power driver switches the respective
outputs. To prevent a loss of data, the device has nonvolatile memory (EEPROM) and a super ca-
pacitor (for around three days) for reserve power.

7
Planning basics
To ensure efficient programming, the following order has to be observed:
1 The basic condition of writing the desired controller functions and its parameterizing is an
accurate hydraulic diagram!
2 This diagram must show what should be regulated and how.
3 The sensor positions are to be defined according to the desired controller functions and
drawn into the diagram.
4 The next step consists in providing all sensors and “consumers” with the desired input or
output numbers. As all the sensor inputs and outputs have different characteristics, it is not
possible to provide consecutive numbers. Therefore, the input and output assignment must be
made according to the following description:
Inputs:
All 16 inputs are suitable for standard sensors of the types KTY (2 k) and PT1000 or for
digital inputs. In addition, the following inputs have special functions:
S8: Current loop (4 – 20 mA) or control voltage (0 - 10V=)
S15, S16: Pulse input, such as for volume flow encoder
Signal voltages of more than 5 V at the inputs S1 to S7 and S9 to S16 or more than 10 V at
S8 are not allowed.
Outputs (supply voltage side):
A1: Speed-adjustable output (!!!!!!!!!! max. 0.7A !!!!!!!!!!) with integrated interference
filter
A2, 6, 7: Speed-adjustable outputs for pumps (max. 1A)
A3: Relay output (closer) for undefined consumers
A4: Relay output with opener and closer for undefined consumers, preferably for valves
without retracting spring. A4 combined with A3 is also suitable for mixer motors.
A5: Relay output – potential-free with opener and closer for burner demand with the
legally prescribed distance to the supply voltage.
A8, A9: Relay outputs (closer) for undefined consumers, preferably together with mixer
engines, as only one commonly used neutral conductor clamp is available for both
outputs
A10, A11: Relay outputs (A10 with closer, A11 with opener and closer) for undefined con-
sumers, preferably together with mixer engines, as only one commonly used neu-
tral conductor clamp is available for both outputs
Outputs (protective low voltage side):
Hirel 1, 2: Control lines for a relay module for two other relay outputs A12 and A13, which can
be installed as module in “Slot 1”.
DL (14): DL bus as bus link for various sensors and/or for data recording via data logger to
a PC. This connection is not only able to be used through the parameterization but
also to activate an additional relay.
0-10 V / PWM (A15, A16): Control output with a standardized voltage level of 0 to 10 V e.g. for
boiler modulation. Switchable to PWM (level approx. 10 V, cycle duration 0.5 ms).
Referred to as analogue output in the user software.
5 Now the calling of the functions and its parameterizing is effected.

Basics
8
Basic standards
Basic operation
Display
The display consists of four information fields
The top line constantly provides information about the actual output states.
Blank field instead of number 5 = output five has not yet been parameterized
Output five is active, runs in automatic mode and is temporarily switched off
Output five is active, runs in automatic mode and is temporarily switched on
Output five is active, runs in manual mode and is temporarily switched off
Output five is active, runs in manual mode and is switched on at the moment
The second line is the headline for the following menu and/or parameter lines.
The middle display area is the operative range. Within this range the programming, parameterizing
and indicating takes place.
The lowest line exclusively serves to mark the two keys below in order to be able to assign different
functions to it.
Keys
The control unit has two keys below the display. They are constantly assigned with the required func-
tions via the display.
x10 – The changeable value changes for 10 steps each per increment of the scroll wheel.
BROWSE – This function allows the direct “switch" from one menu level to the same level of the next
menu by means of the scroll wheel
MENU – To switch from the opening image (after starting-up) to the menu
SERVICE – To switch from the function overview (the most important menu for the user) into all other
menus
BACK – The PC switches immediately into the next-higher menu level
CANCEL - The current entry or change of a value is stopped

Basics
9
Scroll-wheel
By means of the scroll-wheel, the selected menu can be gone through by the right pointer in the
display. Small upward or downward showing arrows symbolize the possibility of further menu lines
above or below the visible display range.
If a parameter is to be changed, the pointer must be put in the desired position. Press the wheel to
change the background lighting of the scroll wheel frame to orange to indicate programming. Now the
value can be adjusted using the wheel (possibly also with "* 10"). You may cancel at any time by
pressing CANCEL. Press the wheel again to turn the screen light green and take over the parameter.
Terms used
Operating system = The software (operating system) of the control unit (e.g.: version A3.28EN) with
indicator of the user language
C.M.I. = Control and monitoring interface, web server for data transfer between CAN bus network and
LAN network
Bootloader = Accessory equipment for data transfer between control unit and PC (no longer availa-
ble)
Boot sector = Protected storage area in the processor containing a basic menu for “auto-
programming" of the chip (e.g.: B2.00)
CAN-Bus = Data bus for data exchange within the unit family
Function data = Customized programming and parameterizing
Function module / Function / Module = Available functions (e.g.: solar thermal control), which
constitute the control characteristics.
Infrared interface – CAN bus on infrared basis (below the two keys) allowing a slack connection to
the Bootloader
Measuring data = Measured values, output states, results of computation such as kW and others

Main menu
10
User interface
After starting up, the display indicates this menu.
TECHN. ALTERNATIVE
----------------------
Homepage: www.ta.co.at
----------------------
UVR1611
Operat. sys: Ax.xxEN
Operating system: Version number of the software. The latest software (higher number) is available
for download under http://www.ta.co.at. It can be transferred to the control unit by means of accessory
equipment – the C.M.I..
The key MENU offers an entrance to the unit menu:
MENU
---------------------
Version
User
Date/time
Measurement overview
Function overview and by scrolling downwards:
Inputs
Outputs
Functions
Messages
Network
Data administration

Main menu
11
Version – shows only the same indication as after the starting up - i.e. the operating system of the
unit.
User – This menu permits the adjustment of the control level, the indication contrast and the back-
ground lighting as well as the entrance into a so-called “User interface editor”, which allows the crea-
tion of an own menu surface.
Date / Time – to set the date and time. It is also possible to switch between normal time and summer
time.
Measurement overview – to display all measured values and network inputs in a table.
Function overview – All important information and parameters (e.g.: ambient temperature) of the
determined function modules are written by the programmer (specialist) in an editor (“User interface
editor”) and displayed here clearly. The computer switches automatically to this overview after a few
minutes, since it is the most important control panel for the user.
Inputs - This menu offers an exact overview of all input values. Furthermore, parameters for all inputs
are set here. For details, see chapter “Menu Inputs”.
Outputs - for the complete parameterizing and manual operation of all outputs. For details, see chap-
ter “Menu Outputs”.
Functions - This is the menu where all function modules of use are listed. Also, the control tasks and
all corresponding parameters are specified here.
Messages – Events determined by the programmer via this menu can trigger status and error mes-
sages as well as an alarm tone.
Network – In this menu, all settings (node number, network in- and outputs, …) concerning the inte-
gration of the control unit in a CAN open bus network are defined.
Data administration – This menu contains for the specialist all commands for the data administration
and protection as well as for an update of the operating system.

Menu User
12
MENU User
Here the following entries are listed:
USER
----------------------
OPERATING MODE:
User
Technician
Expert 
and by scrolling downwards:
DISPLAY:
Contrast: 41
Brightness: 10
Illumin. off after
deactivated 00 sec.
autom. changeover to
func. overview:yes
DATE / TIME:
aut. changeover std/
summertime: yes
Time since leaving
the expert level:
0 Days
USER INTERF.EDITOR
USER BLOCK:
Parameter: yes
Outputs: yes
MENU: no
SIMULATION: no
CHANGE EXPERT
CODE TO: 0 0 0 0
User - All indication possibilities, but only the most important settings are permitted.
Technician – In addition, all the settings are permitted. Access only possible via a key number. This
number can be detected by solving a "little riddle” hidden in the manual.
Expert – In addition, the programming of all functions is possible. The necessary key number is only
passed on to trained personnel by email or by telephone.
DISPLAY: Contrast – Adaptation of the display contrast to the lighting conditions.
Only visible for experts

Menu User
13
DISPLAY: Brightness – The display has a background lighting, which is integrated in the circuit so
that it does not need additional energy. The attenuation of the 12V relays to the 5V computer tension
in many devices is transformed into heat, but in case of the UVR1611 also into light! Thus disconnect-
ing does not save energy. The intensity of the background lighting is variable and can be switched off
after an adjustable time, while no control element is used.
DISPLAY: Automatic changeover to Function overview– In the user surface the most important
information for the user is listed in an overview of functions. This command can be used to activate an
automatic switch when no control element has been used for several minutes.
DATE / TIME: Automatic changeover standard / summer time - This command allows the auto-
matic switching between summer and standard time.
Time since leaving the expert level: - A negligent passing on of the expert key number often leads
to changing of important parameters and linkages by unauthorized persons. This function allows you
to check.
USER INTERFACE EDITOR: Opens an editor menu to program the dialogue (the overview of func-
tions) between control unit and user (only for “expert”).
USER BLOCK: Parameter – If set to yes, the user is not allowed to change any of the parameters
(exception: function overview, all parameters in the user menu and outputs (MANUAL / AUTO)).
USER BLOCK: Outputs – If set to yes, if set to yes, the output conditions can also no longer be
changed by the user.
USER BLOCK: MENU – if set to yes, user and technician now only have access to the function over-
view and the user menu (switching using the left key). After logging in as an expert, it is possible, to
go to the main menu from the function overview by pressing the "SERVICE" key.
SIMULATION:option to activate the simulation mode (in expert mode only):
no average determination of the outside temperature in heating circuit control
inputs defined as PT1000 sensors are measured as KTY
no evaluation of a room sensor
The simulation mode is ended automatically when closing the expert level.
CHANGE EXPERT CODE TO: - Change the ex-works key number. Without knowledge of this num-
ber no read-out of the program (function data) is possible later on.
Under normal conditions, the control unit automatically returns to the user mode two hours after the
last key actuation. Since this is unwanted in devices used for programming or test purposes, the key
number 0 0 0 0 blocks the resetting.
WARNING: The loss of the selected key number can only be cancelled by resetting to the factory
setting – under complete loss of the function data.

Menu Date / time
Menu Measurement overview
14
MENU Date / time
Here the following entries are listed:
DATE / TIME
----------------------
Thursday
16. 12. 2010
Std time: 00 : 00
All values can be selected and changed accordingly by means of the scroll-wheel. The date and time
function has a power reverse of approximately three days in case of a blackout. The indication of the
“Std time“ corresponds to the winter time. The changeover to the summer time is possible manually or
automatically (see user menu).
MENU Measurement overview
In this menu, all entries of the measured values are listed in a table:
MEASUREMENT OVERVIEW
----------------------
1: 60.3 °C 27.6 °C
3: 49.2 °C 88.4 °C
5: 29.0 °C 47.5 °C
…
…
…
NETWORK INPUTS:
1:OFF ON
17: 25.4 °C 10.6 °C
In other words, the temperature at sensor 1 is 60.3°C; the one at sensor 2 is 27.6°C, etc.
If there is a network connection to other devices, the analogue values and digital conditions of the
defined network inputs are subsequently displayed too.
In the example, network input 1 (=digital input 1) is in the "OFF" state, network input 2 is in the "ON"
state, network input 17 (= analogue input 1) is equal to 25.4°C and network input 18 is equal to
10.6°C.

Menu Function overview
15
MENU Function overview
All of the function modules offer a wide range of information, measurement values, and parameters
that can be viewed via the menu "Functions." To give users a quick overview of the main settings,
experts can use the "user interface editor" to display all of the information that users need to see from
all the menus. This information later appears in the menu "Function overview." Only the most im-
portant information and parameters should be entered in the menu "Function overview," and other-
wise the overview would simply be too long. In other words, this menu is by far the most important
interface to users.
The following display is an example of the system with one heater circulation, one heat meter and a
DHW demand function:
HTG.CIRC.1 F: 5
OPERAT.: RS
TIME/AUTO
STANDARD
T.roomSETBACK: 15 °C
T.room STD: 20 °C
TIME PRG:
----------------------
DHW_DEM F: 9
DHW TEMP.:
T.DHW ACT: 60,5 °C
----------------------
INPUTS
The controller automatically switches from any menu to the function overview when it is switched on
or if no operator's control is used for a few minutes, provided that the automatic option has been
activated in the user menu (recommended).
Code for Technicians:
In order to enable all of the setting parameters, open the function "User" in the device’s basic menu
and then select "Technician". Enter the product of 26as the code!

Menu Function overview
16
The user interface editor
To keep the dialogue between users and the controller as simple as possible, an overview menu is
automatically provided to present the most essential information that users need to know from the
wide array of information available. The FUNCTION OVERVIEW serves that purpose in this device.
Experts can use the "user interface editor" at any time to create this overview. The dialogue is com-
plicated in accordance with the scope of information as to cover; the PC user interface TAPPS
simplifies it. We recommend that you use it in any case to provide an easy-to-follow overview of the
most important information that users need.
The command can be found under the entry "USER INTERF. EDIT" in the menu USER. Once the
menu is open, the cursor will be to the left of the display. Press the scroll wheel to open it and then
select from the following commands:
S... A source can be entered in the following dialogue for the entry. The first entry from a "source"
always begins with this command. The next source command closes the previous one and
opens a new one.
A... If the value in the following entry can be changed, users may also make these changes. User
area A
B… --- " --- User area B
C… --- " --- User area C
T... If the value in the following entry can be changed, only technicians but not users may make
these changes.
E... If the value in the following entry can be changed, experts may make these changes. Only
experts and technicians can see this entry, which is hidden for users.
>... Enter lines. About your current position (line), information is to be entered. The number of lines
must be entered.
<... Delete lines. Information in and below your current line is to be deleted. The number of lines
must be entered.
-... Empty line that only appears in the editor; and entry can be made here at any point.
User areas A, B, and C are only important if you are using the CAN monitor. For the unit itself, it does
not matter whether the entry is made with A, B, or C.
Assumption: A house with three apartments (three heating circuits in one control unit), each of which
has its own CAN monitor:
Each of the three parties should only be able to access its own heating circuit; therefore, the first
heating circuit is programmed for user area A in the function overview, while the second one is pro-
grammed for B and the third one for C. Experts can set the user level (such as A) on the CAN moni-
tor. This ensures that user A only sees that heating circuit on the CAN monitor.

Menu Function overview
17
Programming example:
The example in the function overview we will start with is the date, the time (both of which users can
change), and the collector temperature. Enter the command S(source). Now, the display shows:
S User
User is a special feature as it does not have anything to do with commands or entries and is the only
source information that does not produce a heading. It only serves as an indication of the date and
time (summertime, wintertime). Enter A in the next line after you have entered the source of the in-
formation. Now the user can change the value. The current date will immediately be displayed.
S User
A Fr. 24.04.2009
When Ais entered in the next line, the date appears again. It can be set to summertime or wintertime,
depending on the date. Now, the current time appears in the function overview next term (such as
summertime). Now, the display shows:
S User
A Fr. 24.04.2009
A Summertime:
Use the command Sto enter the collector temperature, but instead of User enter Input, and this in-
formation is in the input menu:
S User
A Fr. 24.04.2009
A Summertime:
S Input
Every time the command Sis entered, the function overview displays a new bar across the width of
the display indicating the new function along with a heading (in this example: input). Tis in entered in
the next line to set the collector temperature. It does not matter whether A, Eor Tis selected for
information that cannot be changed, such as collector temperature. In case of doubt (can it really not
be changed?), select T.
S User
A Fr. 24.04.2009 Date
A Summertime: Time
S Input Bar and heading INPUTS
T 1: T.collector The information (temperature) is always displayed for this pur-
pose.
The function overview should now look as follows:
Fr. 24. 04. 2009
Summertime: 13:08
---------------------
INPUTS
1: T.collector
86.7 °C

Menu Function overview
18
Tips and tricks
The commands Delete < and Insert > acquire the inputs of the number of lines.
The overview is all the more useful for users if the information is provided in a proper se-
quence. Begin with the functions for maintenance and control of the heater.
Each source command Sinserts a separation bar in the function overview and the name of the
"source" and is used whenever information is to be added for an additional function. In other
words, S is always at the beginning of any function.
If no new source command is set, the only selection in the subsequent lines concerns infor-
mation for the previously inserted function.
Select a device input output to display the respective values automatically (temperature, au-
tomatic / manual) in the function overview as headings.
When entering outputs assigned to mixtures, proceed in descending order (such as makes or
8.9 before 8).
Entries of INPUT or OUTPUT VARIABLES are admissible and do help users reach this menu
directly in the function overview, but do not provide users with any truly valuable information.
In other words, they can be confusing and should not be used. In addition,
With any function is called (via S), the heading of the selected function that allows the user a
direct entrance into the function is always automatically entered in the overview. Users can
thus reach all the areas of the selected function from the overview.
All of the entries concerned are automatically deleted when the expert deletes this function in
the menu Functions or turns it into a different function.
A set monitoring function of the system from the “messages” module is always entered at the
start of the function overview, but only if it is actually active.
To make sure that the function overview truly provides an overview, you should only enter the
most important information.
Only a few parameters (mainly from the heating circuit control function) should be set by the
user. We thus recommend that you use command A(user may change value) sparingly.
Parameters that can be changed (set values) cannot be changed in the function overview (nor
in the functions themselves) if these set values are transferred from another function via
INPUT VARIABLE.
Users only see "one level up" -- in other words, the information stored with the commands A
(B, C) and T. Only experts see the information marked with E (expert), but experts are also not
able to change this information.

Menu Inputs
19
MENU Inputs
The menu "Inputs“ primarily serves as overview over the measured values of the inputs and/or sen-
sors. Furthermore, it allows the expert the parameterizing of all used inputs if employed the following
procedure:
The line “Inputs” has already been selected and then pressed the scroll-wheel. Hereby the indication
example is as follows:
1: T.collector
78.3 °C PAR?
The temperature of the collector is currently
78.3°C etc.
2: T.DHW1
45.8 °C PAR?
3: T.DHW2
61.2 °C PAR?
4: -----
unused PAR?
Input 4 has to be set before
In the above indication example the sensor inputs 1 to 3 were already defined by the expert, while the
input 4 is not yet fixed. In order to assign e.g. the cylinder sensor buffer, bottom to the input 4 the
arrow has to be induced to the corresponding entrance into the parameterizing level PAR by means of
the scroll-wheel. By pressing the wheel the entrance is effected and the indication "TYPE unused”
appears.
First, it has to be determined which basic characteristic (TYPE) the sensor owns. Possible selections:
unused = The input is not used
ANLG. = Temperature, ambient temp., radiation sensors and others
DIGITAL = Direct ON/OFF control input (possible at each input!) from another function or con-
nection of a potential-free switch contact between sensor connection and sensor earth
(no voltage)
IMPULSE = Volume flow encoder, wind sensor (only for the inputs 15.16)
After having selected the type (according to example ANALG.; as it represents the analogue meas-
ured variable "temperature") all available parameter lines are faded in.
Indication example:
TYPE: ANALG.
MEAS VAR: Temp.
DESIGNATOR
GROUP: General
DES: T.solar flow
SENSOR: Pt 1000
SENSOR CHECK: no
SENSOR CORR.: 0.0 K
AVERAGE: 1.0 sec
A temperature sensor has the measured variable Temp. which is already faded in. A radiation sensor
would need the measured value Solar rad..

Menu Inputs
20
In the next step the name (designator) Buffer, bottom is to be assigned to the input 4. To do so, su-
perset “designator groups” were specified such as General, Generator, Consumer, Line, Climate and
others. General is a group which had to be taken over from old operating systems (< A1.21). Many
names out of it are represented also in the other groups. T.buffer bott is put down in the group Con-
sumer.
When selecting the "designator“, the computer suggests different texts with sequential index up to 9
by scrolling forward. T.buffer bott2). Instead of the “0” the index is faded out (e.g.: T.Buffer.C). In
order to proceed quickly from one designator to the next, the key (x10) must be pressed at the same
time. According to our example we select T.Buffer.L.
Indication example:
TYPE: ANALG.
MEAS.VAR: Temp.
DESIGNATOR
GROUP: Consumer
DES: T.buffer bott
SENSOR: Pt 1000
SENSOR CHECK: no
SENSOR CORR: 0.0 K
AVERAGE: 1.0 sec
Under "SENSOR“ the sensor type has to be specified. Possible selections are: RAS (KTY) or RASPT
(Pt1000) for the ambient temperature sensor, Pt 1000 for the standard temperature sensor and KTY
10.
If a short circuit and/or interruption occur, an active "SENSOR CHECK" issues automatically en error
message in the function overview.
If "SENSORCHECK" is active, the sensor status is also available: OFF for a correctly working sen-
sor and ON for a defective sensor (short circuit or circuit interruption). As the sensor status can also
be set as source of an input variable (see menu “Functions”), it is thereby possible to react according-
ly if e.g. the external sensor fails. The sensor status can optionally be selected for individual sensors
or for all sensors together ("sensor status 17").
If there is a “SENSOR CORR“ such as 0.5K and a measured temperature of 60.0°C, 60.5°C is indi-
cated. This corrected value is then used also internally for all calculations.
“AVERAGE“ means the temporal averaging of the measured values. Calculating a mean of 0.3 sec-
onds leads to an extremely rapid reaction of the display and the unit. However, this can be expected
to cause fluctuations of the value. A large mean slows everything down and is only recommended for
the sensors for the heat meter. For simple measurements, around 1 – 3- sec. should be selected, for
the provision of hygienic warm water with the ultra-speed sensor 0.3 – 0.5 sec.