WELBA WTS-200 User manual

105871 - WTS-200 31.05.2021
Universal tank control
WTS-200 Firmware V0.7
welba.de
Installation and operating instructions
for plant engineering companies,
installers and service engineers
Measuring - Controlling - Regulating
All from the same source
Programmable via
configuration software
WELBA „KONSOFT"

Contents
Introduction ...........................................4
Safety ................................................5
- General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
- Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
- Wiring, screening, earthing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
- Electrical safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation ............................................8
- Location and climatic conditions . . . . . . . . . . . . . . . . . . . . . . . . 8
- Unpacking and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
- Installation of housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
- Fitting the sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Safety during installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Connection diagramm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Technical data ........................................12
Function overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
- Internal data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
- EMAIL or SMS- alarm message/remote maintenance/
remote diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
The configuration software "Konsoft" . . . . . . . . . . . . . . . . . . . . 16
Operating levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operation of working level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
- Button functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
- Meaning of LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
- Operating modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
- OFF mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
- Cooling mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
- Cleaning mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Contents
Cleaning programme description . . . . . . . . . . . . . . . . . . . . . . . . 24
- Cleaning programme diagram. . . . . . . . . . . . . . . . . . . . . . . . . 24
- Cleaning stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
- Cleaning with alkaline or acidic detergent. . . . . . . . . . . . . . . . 31
- Disinfect with "P-acid" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
- Time of dosing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
- Cleaning cycle completed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
- Manual stop of the cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 32
- Stop of the cleaning process due to faults . . . . . . . . . . . . . . . 32
- Power failure during the cleaning process . . . . . . . . . . . . . . . 33
- Quickwash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
- Start options for the cleaning process. . . . . . . . . . . . . . . . . . . 33
- Single step function during cleaning . . . . . . . . . . . . . . . . . . . . 34
Adjustment of parameters in general . . . . . . . . . . . . . . . . . . . . . 35
Operation of 'Cooling parameters 1' level . . . . . . . . . . . . . . . . . 36
Operation of 'Cooling parameters 2' level . . . . . . . . . . . . . . . . . 38
Operation of 'Cleaning parameters 1' level. . . . . . . . . . . . . . . . . 44
Operation of 'Cleaning parameters 2' level. . . . . . . . . . . . . . . . . 46
Operation of 'Hardware Configuratioon' level . . . . . . . . . . . . . . 49
Operation of 'Service parameter' level . . . . . . . . . . . . . . . . . . . . 52
Operation of 'I / O test parameter' level. . . . . . . . . . . . . . . . . . . . 53
Fault messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Other information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
- Function "Intermediate stirring" . . . . . . . . . . . . . . . . . . . . . . . . 58
- "Continuous stirring" function . . . . . . . . . . . . . . . . . . . . . . . . . 58
- Setting the actual value correction . . . . . . . . . . . . . . . . . . . . . 59
- Adjustment of level control . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
- Procedure following power failure . . . . . . . . . . . . . . . . . . . . . . 60
- Emergency cooling in the event of a sensor fault . . . . . . . . . . 61
- Anti-Icing protection by means of low pressure monitoring. . . 61
- Different variants for cooling start delay . . . . . . . . . . . . . . . . 62
- Integrated multifunction-time relay . . . . . . . . . . . . . . . . . . . . . 63
- Enter the SIM PIN for the ESGSM-001. . . . . . . . . . . . . . . . . . 65
General measures when using electronic control systems . . . 66
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Page 2 Page 3
105871 - WTS-200 31.05.2021105871 - WTS-200 31.05.2021

Contents
Introduction ...........................................4
Safety ................................................5
- General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
- Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
- Wiring, screening, earthing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
- Electrical safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation ............................................8
- Location and climatic conditions . . . . . . . . . . . . . . . . . . . . . . . . 8
- Unpacking and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
- Installation of housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
- Fitting the sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Safety during installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Connection diagramm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Technical data ........................................12
Function overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
- Internal data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
- EMAIL or SMS- alarm message/remote maintenance/
remote diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
The configuration software "Konsoft" . . . . . . . . . . . . . . . . . . . . 16
Operating levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operation of working level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
- Button functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
- Meaning of LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
- Operating modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
- OFF mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
- Cooling mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
- Cleaning mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Contents
Cleaning programme description . . . . . . . . . . . . . . . . . . . . . . . . 24
- Cleaning programme diagram. . . . . . . . . . . . . . . . . . . . . . . . . 24
- Cleaning stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
- Cleaning with alkaline or acidic detergent. . . . . . . . . . . . . . . . 31
- Disinfect with "P-acid" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
- Time of dosing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
- Cleaning cycle completed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
- Manual stop of the cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 32
- Stop of the cleaning process due to faults . . . . . . . . . . . . . . . 32
- Power failure during the cleaning process . . . . . . . . . . . . . . . 33
- Quickwash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
- Start options for the cleaning process. . . . . . . . . . . . . . . . . . . 33
- Single step function during cleaning . . . . . . . . . . . . . . . . . . . . 34
Adjustment of parameters in general . . . . . . . . . . . . . . . . . . . . . 35
Operation of 'Cooling parameters 1' level . . . . . . . . . . . . . . . . . 36
Operation of 'Cooling parameters 2' level . . . . . . . . . . . . . . . . . 38
Operation of 'Cleaning parameters 1' level. . . . . . . . . . . . . . . . . 44
Operation of 'Cleaning parameters 2' level. . . . . . . . . . . . . . . . . 46
Operation of 'Hardware Configuratioon' level . . . . . . . . . . . . . . 49
Operation of 'Service parameter' level . . . . . . . . . . . . . . . . . . . . 52
Operation of 'I / O test parameter' level. . . . . . . . . . . . . . . . . . . . 53
Fault messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Other information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
- Function "Intermediate stirring" . . . . . . . . . . . . . . . . . . . . . . . . 58
- "Continuous stirring" function . . . . . . . . . . . . . . . . . . . . . . . . . 58
- Setting the actual value correction . . . . . . . . . . . . . . . . . . . . . 59
- Adjustment of level control . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
- Procedure following power failure . . . . . . . . . . . . . . . . . . . . . . 60
- Emergency cooling in the event of a sensor fault . . . . . . . . . . 61
- Anti-Icing protection by means of low pressure monitoring. . . 61
- Different variants for cooling start delay . . . . . . . . . . . . . . . . 62
- Integrated multifunction-time relay . . . . . . . . . . . . . . . . . . . . . 63
- Enter the SIM PIN for the ESGSM-001. . . . . . . . . . . . . . . . . . 65
General measures when using electronic control systems . . . 66
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Page 2 Page 3
105871 - WTS-200 31.05.2021105871 - WTS-200 31.05.2021

Page 4 Page 5
Safety
General information
The parameter settings of the WTS-200 as supplied do not corre-
spond to the intended use. This can lead to undefined behaviour by
individual components when the system is commissioned.
For this reason, no actuators should be connected when starting
operation. Load circuits should be separated.
The general principle is that the plant constructor is responsible
for putting the controller into operation.
These operating instructions contain important technical and
safety information. Please read carefully before installation and
before any work on or with the regulator.
It is the duty of the party commissioning the system to ensure com-
pliance with the following guidelines.
The universal tank controller may only be installed by an
authorised specialist, observing all local safety requirements.
Access to the environment when connected must be restricted to
specialised personnel.
Universal tank controllers contain live components. They must be
built into the plant in such a way that contact with such live compo-
nents is impossible.
The controller is not suitable for use in explosive atmospheres.
Danger of explosion. Use only outside areas subject to explosive
atmospheres.
The device must not be used if the housing or connection termi-
nals are damaged.
No fluids must penetrate the housing.
The universal tank control may not be exported to the USA without
the manufacturer's express permission.
105871 - WTS-200 31.05.2021
Welba KONSOFT
Introduction
All information and instructions in this manual have been compiled taking into
account the applicable standards and regulations, the state of the art and our
long-term experiences.
WELBA GmbH does not assume any liability for damages due to:
!Non-observance of the installation instruction
!Improper use
!Installation by unqualified staff
!Non-professional installation by third parties
!Unauthorized modifications
!Technical modifications
Otherwise, our general terms and conditions as well as the terms of delivery of
WELBA GmbH and the legal regulations valid at the time of conclusion of the
contract are applicable.
We reserve the right to make technical changes in the context of improving the
properties of use and further developments,
Limitation of liability
These operating instructions include important technical and
safety information. It is vital to carefully study all these instruc-
tions before the installation of the control or in case of any other
work with the control!
These instructions have been prepared with the utmost care. However, the
information contained herein is not an assurance of product characteristics.
The manufacturer accepts no liability for errors and reserves the right to make
technical changes at any time. All rights reserved.
The free of charge configuration Software KONSOFT provides a simple
parameterization and updating of the WTS-200 as well as a comfortable evalu-
ation of the determined data.
See also page 16.
NOTE: The KONSOFT PC-Software has been thoroughly tested and has proven itself hundreds of times in customer use. Despite
all care, we point out that the use of the free PC-Software is at your own risk. WELBA does not accept any liability for damages or loss
of data resulting from the installation or use of the Software.
The proper function of the WTS-200 depends on many external
factors on which the manufacturer has no influence. The manufac-
turer accepts no liability for any damages on the milk cooling tank,
the connected components or the milk.
105871 - WTS-200 31.05.2021

Page 4 Page 5
Safety
General information
The parameter settings of the WTS-200 as supplied do not corre-
spond to the intended use. This can lead to undefined behaviour by
individual components when the system is commissioned.
For this reason, no actuators should be connected when starting
operation. Load circuits should be separated.
The general principle is that the plant constructor is responsible
for putting the controller into operation.
These operating instructions contain important technical and
safety information. Please read carefully before installation and
before any work on or with the regulator.
It is the duty of the party commissioning the system to ensure com-
pliance with the following guidelines.
The universal tank controller may only be installed by an
authorised specialist, observing all local safety requirements.
Access to the environment when connected must be restricted to
specialised personnel.
Universal tank controllers contain live components. They must be
built into the plant in such a way that contact with such live compo-
nents is impossible.
The controller is not suitable for use in explosive atmospheres.
Danger of explosion. Use only outside areas subject to explosive
atmospheres.
The device must not be used if the housing or connection termi-
nals are damaged.
No fluids must penetrate the housing.
The universal tank control may not be exported to the USA without
the manufacturer's express permission.
105871 - WTS-200 31.05.2021
Welba KONSOFT
Introduction
All information and instructions in this manual have been compiled taking into
account the applicable standards and regulations, the state of the art and our
long-term experiences.
WELBA GmbH does not assume any liability for damages due to:
!Non-observance of the installation instruction
!Improper use
!Installation by unqualified staff
!Non-professional installation by third parties
!Unauthorized modifications
!Technical modifications
Otherwise, our general terms and conditions as well as the terms of delivery of
WELBA GmbH and the legal regulations valid at the time of conclusion of the
contract are applicable.
We reserve the right to make technical changes in the context of improving the
properties of use and further developments,
Limitation of liability
These operating instructions include important technical and
safety information. It is vital to carefully study all these instruc-
tions before the installation of the control or in case of any other
work with the control!
These instructions have been prepared with the utmost care. However, the
information contained herein is not an assurance of product characteristics.
The manufacturer accepts no liability for errors and reserves the right to make
technical changes at any time. All rights reserved.
The free of charge configuration Software KONSOFT provides a simple
parameterization and updating of the WTS-200 as well as a comfortable evalu-
ation of the determined data.
See also page 16.
NOTE: The KONSOFT PC-Software has been thoroughly tested and has proven itself hundreds of times in customer use. Despite
all care, we point out that the use of the free PC-Software is at your own risk. WELBA does not accept any liability for damages or loss
of data resulting from the installation or use of the Software.
The proper function of the WTS-200 depends on many external
factors on which the manufacturer has no influence. The manufac-
turer accepts no liability for any damages on the milk cooling tank,
the connected components or the milk.
105871 - WTS-200 31.05.2021

Safety
!Wherever possible, keep input, output and supply leads and sensor cable
physically separate from each other and do not lay them parallel to each
other.
!Mains voltage cables and low-voltage cables must not be laid in one cable.
!Use screened and twisted interface and sensor cables.
!Earth the screening of temperature sensors unilaterally in the switchbox.
!Ensure correctly wired potential equalisation.
When selecting wiring materials and installing and connecting the temperature
controller to the electricity supply, account must be taken of DIN VDE 0100
“Erection of power installations with rated voltages below 1000” or the relevant
national regulations (e.g. based on IEC 60364).
!The controller itself and the associated control circuits and load circuits must
be protected separately and in accordance with the local regulations.
!The separate protection of the control- and load circuit must be carried out
according to local conditions!
!In order to prevent destruction of the relay or semiconductor relay outputs in
the event of a short-circuit, the load circuit should be fused to the maximum
permissible output current.
!As well as incorrect installation, wrong parameter settings can also adversely
affect the correct functioning of the controller. For this reason, safety devices
that are independent of the controller should always be used, e.g. high and
low pressure valves or temperature limiters. Account should be taken of the
local safety regulations in this connection.
!The load circuit (relay outputs K1 to K10) must be fused in accordance with
the connected components.
!The connection of external voltages to the digital inputs can lead to the
destruction of the control.
!Caution: All cables to the digital inputs must be shielded and kept as short as
possible. EMC.
Important note concerning the external fuse
!We recommend protecting the control system with a slow-blow fuse of 160
mA.
Wiring, screening, earthing
Electrical safety
Intended use
Universal tank controllers WTS-200 are designed to control heating systems,
condensing units, alarms, fans, etc. in milk cooling tanks. Any other use of the
device is permitted only with prior written permission from the manufacturer.
The controller is intended only for incorporating into machinery, display panels
or switchboxes etc. and when fitted corresponding to protection class 2 (double
or reinforced insulation) It is only allowed to be put into operation in installed .
state. The use of the control is permitted in devices of protection class 1 and 2.
The controller must not be modified or converted in any way.
The universal tank controller is ready for use only when the parameters have
been set appropriately. Its use before this has been done would have no bene-
fits and could also damage the equipment or adversely affect the milk to be
temperature-controlled.
The device is fitted with a resistance temperature sensor.
The controller is not suitable for use in explosive atmospheres. Danger of
explosion. Use only outside areas subject to explosive atmospheres.
The WTS-200 fulfils the EC requirements for electromagnetic compatibility
(EMC) and the Low Voltage Directive (LVD).
The safety components meet the VDE regulations.
Safety
Page 6 Page 7
105871 - WTS-200 31.05.2021105871 - WTS-200 31.05.2021

Safety
!Wherever possible, keep input, output and supply leads and sensor cable
physically separate from each other and do not lay them parallel to each
other.
!Mains voltage cables and low-voltage cables must not be laid in one cable.
!Use screened and twisted interface and sensor cables.
!Earth the screening of temperature sensors unilaterally in the switchbox.
!Ensure correctly wired potential equalisation.
When selecting wiring materials and installing and connecting the temperature
controller to the electricity supply, account must be taken of DIN VDE 0100
“Erection of power installations with rated voltages below 1000” or the relevant
national regulations (e.g. based on IEC 60364).
!The controller itself and the associated control circuits and load circuits must
be protected separately and in accordance with the local regulations.
!The separate protection of the control- and load circuit must be carried out
according to local conditions!
!In order to prevent destruction of the relay or semiconductor relay outputs in
the event of a short-circuit, the load circuit should be fused to the maximum
permissible output current.
!As well as incorrect installation, wrong parameter settings can also adversely
affect the correct functioning of the controller. For this reason, safety devices
that are independent of the controller should always be used, e.g. high and
low pressure valves or temperature limiters. Account should be taken of the
local safety regulations in this connection.
!The load circuit (relay outputs K1 to K10) must be fused in accordance with
the connected components.
!The connection of external voltages to the digital inputs can lead to the
destruction of the control.
!Caution: All cables to the digital inputs must be shielded and kept as short as
possible. EMC.
Important note concerning the external fuse
!We recommend protecting the control system with a slow-blow fuse of 160
mA.
Wiring, screening, earthing
Electrical safety
Intended use
Universal tank controllers WTS-200 are designed to control heating systems,
condensing units, alarms, fans, etc. in milk cooling tanks. Any other use of the
device is permitted only with prior written permission from the manufacturer.
The controller is intended only for incorporating into machinery, display panels
or switchboxes etc. and when fitted corresponding to protection class 2 (double
or reinforced insulation) It is only allowed to be put into operation in installed .
state. The use of the control is permitted in devices of protection class 1 and 2.
The controller must not be modified or converted in any way.
The universal tank controller is ready for use only when the parameters have
been set appropriately. Its use before this has been done would have no bene-
fits and could also damage the equipment or adversely affect the milk to be
temperature-controlled.
The device is fitted with a resistance temperature sensor.
The controller is not suitable for use in explosive atmospheres. Danger of
explosion. Use only outside areas subject to explosive atmospheres.
The WTS-200 fulfils the EC requirements for electromagnetic compatibility
(EMC) and the Low Voltage Directive (LVD).
The safety components meet the VDE regulations.
Safety
Page 6 Page 7
105871 - WTS-200 31.05.2021105871 - WTS-200 31.05.2021

Installation
40 mm
6,0 mm
6,1 mm
Fitting the sensor
When setting the temperature controller parameters (and whenever the sensor is
replaced) the “actual value correction” [Parameter C91] must be adjusted so that the
temperature measured corresponds to that shown on the display. A reference thermo-
meter should be used for this purpose.
See the page 59.
Pay attention to the permitted temperature range for sensor cable exposure.
The sensor cable must not be chafed or kinked.
There must be no substantial mechanical pressure on the sensor tube.
Do not place the sensor and the high-voltage cable in the same cable
conduit (not even within the switchbox).
Temperature range sensor cable -10°C .. +70°C
Changing the sensor cable length
lf it is necessary to shorten or lengthen the sensor cable on installation (or if a sensor
other than the one supplied is to be fitted), the "actual value correction" parameter
must be adjusted accordingly. See the page 59.
Installation
166
95
157
97
R4
For fixing the housing please follow the instructions:
!Place the seal carefully in the groove. Ensure it is not twisted.
!Insert the housing from the front through the switchboard cut-out.
!Attach the holding frame in the rear position as shown by the picture.
!Fasten the housing by using the screws provided.
If the packaging is damaged or something is missing, do not fit the tempera-
ture controller. In this case please contact Welba.
If you keep the temperature controller for a period before using it, store it in a
clean dry place at a temperure of between -20°C and +70°C.
A physical separation between the device and inductive consumers is recommended.
It is essential not to install the device under the following conditions:
"severe jolting, vibration or magnetic fields
"permanent contact with water
"relative humidity of more than 90%
"sharply fluctuating temperatures (condensation)
"dust, flammable gases, vapours, solvents,
"operation in an aggressive atmosphere (ammonia or sulphur fumes) - risk
of oxidation
"operation in the immediate vicinity of radio transmitters with high levels of
spurious radiation.
Installation of housing
Location and climatic conditions
Unpacking and storage
all drillings ø 4 mm
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Installation
40 mm
6,0 mm
6,1 mm
Fitting the sensor
When setting the temperature controller parameters (and whenever the sensor is
replaced) the “actual value correction” [Parameter C91] must be adjusted so that the
temperature measured corresponds to that shown on the display. A reference thermo-
meter should be used for this purpose.
See the page 59.
Pay attention to the permitted temperature range for sensor cable exposure.
The sensor cable must not be chafed or kinked.
There must be no substantial mechanical pressure on the sensor tube.
Do not place the sensor and the high-voltage cable in the same cable
conduit (not even within the switchbox).
Temperature range sensor cable -10°C .. +70°C
Changing the sensor cable length
lf it is necessary to shorten or lengthen the sensor cable on installation (or if a sensor
other than the one supplied is to be fitted), the "actual value correction" parameter
must be adjusted accordingly. See the page 59.
Installation
166
95
157
97
R4
For fixing the housing please follow the instructions:
!Place the seal carefully in the groove. Ensure it is not twisted.
!Insert the housing from the front through the switchboard cut-out.
!Attach the holding frame in the rear position as shown by the picture.
!Fasten the housing by using the screws provided.
If the packaging is damaged or something is missing, do not fit the tempera-
ture controller. In this case please contact Welba.
If you keep the temperature controller for a period before using it, store it in a
clean dry place at a temperure of between -20°C and +70°C.
A physical separation between the device and inductive consumers is recommended.
It is essential not to install the device under the following conditions:
"severe jolting, vibration or magnetic fields
"permanent contact with water
"relative humidity of more than 90%
"sharply fluctuating temperatures (condensation)
"dust, flammable gases, vapours, solvents,
"operation in an aggressive atmosphere (ammonia or sulphur fumes) - risk
of oxidation
"operation in the immediate vicinity of radio transmitters with high levels of
spurious radiation.
Installation of housing
Location and climatic conditions
Unpacking and storage
all drillings ø 4 mm
Page 8 Page 9
105871 - WTS-200 31.05.2021105871 - WTS-200 31.05.2021

Electrical connection
K2 K3 K4 K5 K6 K7 K8 K9 K10
A1
A2
5 6 7 8 9 10 11 12 13 14
Safety switch
Temp. sensor KTY81-210
RS-485 PC
max. switching current relay:
K1...K10 5A/230VAC1
Cleaning activ
K1
1 2 3
25 24 23 22 21 20 19 18 17 16
Remote start cooling Level input
Digital inputs
Connection diagram
!Electrical connections must be as shown in the diagram below.
!Use cable bushes.
!Make sure that cables cannot chafe.
!Observe relay current rating.
!In all cases use contactors for pump, compressor and heater.
!Do not feed digital inputs with external voltage! Use potential-free
switches.
Agitator Compressor
Cold water valve Warm water valve
Detergent alkaline
Drain valve
Heater
Cleaning pump
Infeed actuators Detergent acid
230V AC
50/60Hz
Fault warning input
Before connecting ensure that the mains voltage is the same as indi-
cated on the device's type plate.
Incorrect electrical connection can cause damage to the regulator and to
the equipment.
The temperature controller should be disconnected from the mains volt-
age while connecting plant components or the sensor.
No appliances with current levels in excess of the maximum values indi-
cated in the technical data should be connected to the relay contacts.
No other consumers may be connected to the controller's mains termi-
nals.
Safety during installation
Correct wiring in accordance with the information in the accompanying description
and local regulations is essential. Take particular care to ensure that the AC supply is
not connected to the sensor input or other low-voltage inputs or outputs.
The various relay contacts may only be connected with uniform tension.
Use copper wire (except for the sensor connection) and ensure that all supply leads
and connection terminals are dimensioned to suit the relevant current rating.
When connecting the controller and selecting the wiring materials to be used, it is
essential to comply with the provisions of DIN VDE 0100 “Erection of power installa-
tions with rated voltages below 1000” or the relevant national regulations.
Furthermore, all connections must comply with the relevant VDE regulations or corre-
sponding national regulations.
, Within the relay group K2 to K10 the respective relays are connected with each other
on one side. They connect the respective voltage which has been connected at the
feed point (terminal 9) to the load.
,Compressor, cleaning pump and heater must not be connected directly to the relays
on the control unit. These must be switched by additional contactors. In individual
cases, it must be checked whether additional motor protection switches or other
safety devices are to be installed.
,Contactors are to be fitted with an RC protective circuit.
, The digital inputs may only be connected via potential free switch contacts.
Wiring
Electrical connection
Page 10 Page 11
105871 - WTS-200 31.05.2021105871 - WTS-200 31.05.2021
DANGER:
The assignment of the relays and
the digital inputs to the various
functions can be freely set in the A
parameters.
The assignment shown here cor-
responds to the factory setting and
can be changed as required!