WELBA WTS-200 User manual

Page # Page 1
105871 - WTS-200 11.06.2019
Universal tank control
WTS-200 Firmware V0.5
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"

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105871 - WTS-200 11.06.2019 105871 - WTS-200 11.06.2019
Contents Appliance description
The WTS-200 is a universal tank control unit combining a modern milk
cooling regulator and a complete cleaning programme control system in
one.
The control unit has various operating modes:
!OFF mode (with continuous stirring function)
The control unit is on stand-by. The display shows 'OFF', the LEDs
are out and all output replays are deactivated.
In the OFF mode the agitator can be switched on and off by press-
ing a button. In parameter [C25] can be set after which time the
agitator switches off automatically.
The following operating modes can only be selected from the OFF
mode. It is not possible to switch directly from one of them to
another.
CAUTION: The control unit is live even when switched off.
!Cooling mode
The current milk temperature, as measured, is permanently
displayed.
It is possible to switch between two freely adjustable target temper-
atures by pressing a button. If the milk temperature exceeds the
selected target temperature (T1 or T2) by the hysteresis value, the
compressor relay and agitator are automatically activated. Once
the target temperature is reached, the compressor switches off,
while the agitator continues to operate for the pre-set 'after-stirring'
time.
During non-cooling periods the agitator switches on at pre-set
intervals in order to ensure an even temperature throughout the
milk.
Independently of this a short or long 'intermediate stirring' period
can be selected during cooling by pressing a button.
Start cooling mode by pressing button on foil keyboard:
If the delayed start is activated (parameter [P62]), cooling starts for
the first milking after a delay. If the cooling button is pressed twice,
cooling starts immediately.
Start cooling mode via digital input:
The cooling starts immediately - depending on the setting in
parameter [C79] - or with a delayed start cooling.
!cleaning mode
The cleaning timer controls water intake as either by time or level,
selected. All running times (heater, pump, detergent injection) can
be set separately. Detergent switchover from alkaline to acidic can
also be set.
The WTS-200 controls the various processes and times needed
for a thorough wash fully automatically.
Following a power failure the control unit restarts in the mode
in which it was operating before the outage.
Appliance decription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety .....................................................4
- Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation .................................................5
- Installation of housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
- Fitting the sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
- Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
- Connection diagramm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Technical data ..............................................8
- Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
- Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Operating levels .............................................9
Operation of working level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Button functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Meaning of LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
- Operating modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cleaning programme description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
- Cleaning programme diagramm . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
- Cleaning stage 1 -> Pre rinse 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
- Cleaning stage 2 -> Main rinse 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
- Cleaning stage 3 -> Main rinse 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
- Cleaning stage 4 -> Intermediate rinse . . . . . . . . . . . . . . . . . . . . . . . 18
- Cleaning stage 5 -> Main rinse 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
- Cleaning stage 6 -> After rinse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
- Cleaning with alkaline or acidic detergent . . . . . . . . . . . . . . . . . . . . . 21
- Time of dosing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
- Faults during cleaning process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
- Manual stop of the cleaning process. . . . . . . . . . . . . . . . . . . . . . . . . 22
- Power failure during the cleaning process. . . . . . . . . . . . . . . . . . . . . 23
- Service functions for testing the cleaning cycle. . . . . . . . . . . . . . . . . 23
Adjustment of parameters in general. . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Operation of 'General cooling parameters' level. . . . . . . . . . . . . . . . . . 26
Operation of 'Extended cooling parameters' level . . . . . . . . . . . . . . . . 28
Operation of 'General cleaning parameters' level. . . . . . . . . . . . . . . . . 30
Operation of 'Extended cleaning parameters' level ...............33
Operation of 'I / O test parameter' level . . . . . . . . . . . . . . . . . . . . . . . . . 35
Fault indication on the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Sonstige Hinweise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
- Function "Intermediate stirring" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
- "Continuous stirring" function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
- Setting the actual value correction . . . . . . . . . . . . . . . . . . . . . . . . . . 38
- Adjustment of level control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
- Procedure following power failure . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
General measures when using electronic control systems. . . . . . . . . 40
Disposal...................................................42

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105871 - WTS-200 11.06.2019 105871 - WTS-200 11.06.2019
Contents Appliance description
The WTS-200 is a universal tank control unit combining a modern milk
cooling regulator and a complete cleaning programme control system in
one.
The control unit has various operating modes:
!OFF mode (with continuous stirring function)
The control unit is on stand-by. The display shows 'OFF', the LEDs
are out and all output replays are deactivated.
In the OFF mode the agitator can be switched on and off by press-
ing a button. In parameter [C25] can be set after which time the
agitator switches off automatically.
The following operating modes can only be selected from the OFF
mode. It is not possible to switch directly from one of them to
another.
CAUTION: The control unit is live even when switched off.
!Cooling mode
The current milk temperature, as measured, is permanently
displayed.
It is possible to switch between two freely adjustable target temper-
atures by pressing a button. If the milk temperature exceeds the
selected target temperature (T1 or T2) by the hysteresis value, the
compressor relay and agitator are automatically activated. Once
the target temperature is reached, the compressor switches off,
while the agitator continues to operate for the pre-set 'after-stirring'
time.
During non-cooling periods the agitator switches on at pre-set
intervals in order to ensure an even temperature throughout the
milk.
Independently of this a short or long 'intermediate stirring' period
can be selected during cooling by pressing a button.
Start cooling mode by pressing button on foil keyboard:
If the delayed start is activated (parameter [P62]), cooling starts for
the first milking after a delay. If the cooling button is pressed twice,
cooling starts immediately.
Start cooling mode via digital input:
The cooling starts immediately - depending on the setting in
parameter [C79] - or with a delayed start cooling.
!cleaning mode
The cleaning timer controls water intake as either by time or level,
selected. All running times (heater, pump, detergent injection) can
be set separately. Detergent switchover from alkaline to acidic can
also be set.
The WTS-200 controls the various processes and times needed
for a thorough wash fully automatically.
Following a power failure the control unit restarts in the mode
in which it was operating before the outage.
Appliance decription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety .....................................................4
- Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation .................................................5
- Installation of housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
- Fitting the sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
- Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
- Connection diagramm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Technical data ..............................................8
- Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
- Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Operating levels .............................................9
Operation of working level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Button functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Meaning of LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
- Operating modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cleaning programme description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
- Cleaning programme diagramm . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
- Cleaning stage 1 -> Pre rinse 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
- Cleaning stage 2 -> Main rinse 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
- Cleaning stage 3 -> Main rinse 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
- Cleaning stage 4 -> Intermediate rinse . . . . . . . . . . . . . . . . . . . . . . . 18
- Cleaning stage 5 -> Main rinse 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
- Cleaning stage 6 -> After rinse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
- Cleaning with alkaline or acidic detergent . . . . . . . . . . . . . . . . . . . . . 21
- Time of dosing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
- Faults during cleaning process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
- Manual stop of the cleaning process. . . . . . . . . . . . . . . . . . . . . . . . . 22
- Power failure during the cleaning process. . . . . . . . . . . . . . . . . . . . . 23
- Service functions for testing the cleaning cycle. . . . . . . . . . . . . . . . . 23
Adjustment of parameters in general. . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Operation of 'General cooling parameters' level. . . . . . . . . . . . . . . . . . 26
Operation of 'Extended cooling parameters' level . . . . . . . . . . . . . . . . 28
Operation of 'General cleaning parameters' level. . . . . . . . . . . . . . . . . 30
Operation of 'Extended cleaning parameters' level ...............33
Operation of 'I / O test parameter' level . . . . . . . . . . . . . . . . . . . . . . . . . 35
Fault indication on the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Sonstige Hinweise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
- Function "Intermediate stirring" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
- "Continuous stirring" function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
- Setting the actual value correction . . . . . . . . . . . . . . . . . . . . . . . . . . 38
- Adjustment of level control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
- Procedure following power failure . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
General measures when using electronic control systems. . . . . . . . . 40
Disposal...................................................42

Page 4 Page 5
Safety
The universal tank control type WTS-200 is used to control heating and
cooling systerns, alarm devices, fans, etc.
Any other use of the device is permitted only with prior written permissi-
on from the manufacturer.
The universal tank control is ready for use once the parameters have
been set. lt should not be used before this has been done as this might
result in damage to the plant and the item to be cooled or heated.
The device is fitted with a resistance temperature sensor.
The device must not be installed in potentially explosive
atmospheres.
The universal tank control type WTS-200 fulfils the EC requi-
rements for electromagnetic compatibility (EMC) and the Low
Voltage Directive (LVD).
The safety components meet the VDE regulations.
Intended use
These operating instructions contain important technical
and safety information.
Please read carefully before installation and before any
work on or with the regulator.
The universal tank control must be installed by an authori-
sed specialist observing local safety regulations.
Access to the environment when connected must be
restricted to specialised personnel.
The universal tank control contains live components and
must not be opened up.
lt must not be used if the housing or connection terminals
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.
Installation
40 mm
6,0 mm
6,1 mm
166
95
156
96
R3
105871 - WTS-200 11.06.2019 105871 - WTS-200 11.06.2019
Drilling diagram
It is essential not to install the device under the following conditions:
"severe jolting or vibration
"permanent contact with water
"relative humidity of more than 90%
"sharply fluctuating temperatures (condensation)
"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
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
and fasten using the screws provided.
!Carry out the electrical wiring and sensor connection in accordance
with the following description.
Fitting the sensor
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
section "Setting the actual value correction" on page 38.

Page 4 Page 5
Safety
The universal tank control type WTS-200 is used to control heating and
cooling systerns, alarm devices, fans, etc.
Any other use of the device is permitted only with prior written permissi-
on from the manufacturer.
The universal tank control is ready for use once the parameters have
been set. lt should not be used before this has been done as this might
result in damage to the plant and the item to be cooled or heated.
The device is fitted with a resistance temperature sensor.
The device must not be installed in potentially explosive
atmospheres.
The universal tank control type WTS-200 fulfils the EC requi-
rements for electromagnetic compatibility (EMC) and the Low
Voltage Directive (LVD).
The safety components meet the VDE regulations.
Intended use
These operating instructions contain important technical
and safety information.
Please read carefully before installation and before any
work on or with the regulator.
The universal tank control must be installed by an authori-
sed specialist observing local safety regulations.
Access to the environment when connected must be
restricted to specialised personnel.
The universal tank control contains live components and
must not be opened up.
lt must not be used if the housing or connection terminals
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.
Installation
40 mm
6,0 mm
6,1 mm
166
95
156
96
R3
105871 - WTS-200 11.06.2019 105871 - WTS-200 11.06.2019
Drilling diagram
It is essential not to install the device under the following conditions:
"severe jolting or vibration
"permanent contact with water
"relative humidity of more than 90%
"sharply fluctuating temperatures (condensation)
"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
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
and fasten using the screws provided.
!Carry out the electrical wiring and sensor connection in accordance
with the following description.
Fitting the sensor
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
section "Setting the actual value correction" on page 38.

Page 6 Page 7
Installation
Before connecting ensure that the mains voltage is the
same as indicated on the device's type plate.
Incorrect electrical connection can cause damage to the
tank control and to the equipment.
The mains voltage should not be switched on until all
components including the sensor are connected.
No appliances with current levels in excess of the maxi-
mum values indicated on the relays should be connected
to the relay contacts
Use contactors.
Downstream contactors must be fitted with an RC protecti-
on circuit. (see also page 41).
230V AC
50/60Hz
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
free
Level input
Digital inputs
105871 - WTS-200 11.06.2019 105871 - WTS-200 11.06.2019
Installation
Electrical connection 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

Page 6 Page 7
Installation
Before connecting ensure that the mains voltage is the
same as indicated on the device's type plate.
Incorrect electrical connection can cause damage to the
tank control and to the equipment.
The mains voltage should not be switched on until all
components including the sensor are connected.
No appliances with current levels in excess of the maxi-
mum values indicated on the relays should be connected
to the relay contacts
Use contactors.
Downstream contactors must be fitted with an RC protecti-
on circuit. (see also page 41).
230V AC
50/60Hz
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
free
Level input
Digital inputs
105871 - WTS-200 11.06.2019 105871 - WTS-200 11.06.2019
Installation
Electrical connection 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

Page 8 Page 9
Technische Änderungen vorbehalten.
40 mm
6,0 mm
6,1 mm
Technical data
Operating voltage 230V AC +/-10%, 50 Hz
Relay contacts 10 performance relays
max. switching current each 5A AC1 - 250V AC
max. switching voltage 250V AC - 50 Hz
Display 13 mm LED - Display, 3 digits
LED switching status displays 3 mm
Display range -99 .. 999
Number of Sensors 1
Sensor type KTY 81-210
Sensor cable lenght 2 metres (or as required)
Measurement range -5° .. +70°C
Temperature resolution 0,1°C
Control mode two-step-controller
Hysteresis* 0,1 K .. 10,0 K
(standard adjusting 0,7 K)
Water detection via level monitor (optionally)
Target temperature T1* standard adjusting 4°C
Target temperature T2* standard adjusting 4°C
Digital inputs 3 (via optocoupler)
Connection Push-in screw connections
for cables up to 2.5 mm²
Housing FEG 106/175 M
- front dimension 106 x 175 mm
- front panel cut out 156 x 96 mm
- insertion depht 45 mm
Protection (housing front) IP 65
Environment specifications:
- Operation temperature 0° .. +50°C
- Storage temperature -20° .. +70°C
- max. humidity 75% (no dew)
Operating levels
Working level
for normal daily operation
General cooling parameters Code: 212
Extended cooling parameters Code: 345
Geneal cleaning parameters Code: 454
Extended cleaning parameters Code: 567
I/O test parameters Code: 0E5
CODE
Control
105871 - WTS-200 11.06.2019 105871 - WTS-200 11.06.2019
Sensor
Sensors other than our standard type are available on request
(different bush from or cable length).
Some of the options are shown here.
Sensor element
Bush material
Bush length
Bush diameter
Cable material
Measurement range
Cable lenght
Protection type
KTY sensor
1.4301(V2A)
40 mm
6.0 mm +/- 0.1
PVC
-10 .. 70° C
Standard 2 metres
IP 65
Operation of the WTS-200 takes place at various levels:
Working level:
… for normal daily operation.
!OFF mode = control unit switched off.
!Start cooling mode.
!Start cleaning mode.
The subsidiary parameters are accessed by entering a code in
order to avoid their accidental alteration.
General cooling parameters
Parameters such as target values, hysteresis etc. are set here.
Extended cooling parameters
For programming the control unit's individual tank-specific cooling func-
tions.
General cleaning parameters
Parameters such as times are set here.
Extended cleaning parameters
For programming the control unit's individual tank-specific cleaning
functions.
I/O test parameters
is used to test the relay as well as the output and input functions.

Page 8 Page 9
Technische Änderungen vorbehalten.
40 mm
6,0 mm
6,1 mm
Technical data
Operating voltage 230V AC +/-10%, 50 Hz
Relay contacts 10 performance relays
max. switching current each 5A AC1 - 250V AC
max. switching voltage 250V AC - 50 Hz
Display 13 mm LED - Display, 3 digits
LED switching status displays 3 mm
Display range -99 .. 999
Number of Sensors 1
Sensor type KTY 81-210
Sensor cable lenght 2 metres (or as required)
Measurement range -5° .. +70°C
Temperature resolution 0,1°C
Control mode two-step-controller
Hysteresis* 0,1 K .. 10,0 K
(standard adjusting 0,7 K)
Water detection via level monitor (optionally)
Target temperature T1* standard adjusting 4°C
Target temperature T2* standard adjusting 4°C
Digital inputs 3 (via optocoupler)
Connection Push-in screw connections
for cables up to 2.5 mm²
Housing FEG 106/175 M
- front dimension 106 x 175 mm
- front panel cut out 156 x 96 mm
- insertion depht 45 mm
Protection (housing front) IP 65
Environment specifications:
- Operation temperature 0° .. +50°C
- Storage temperature -20° .. +70°C
- max. humidity 75% (no dew)
Operating levels
Working level
for normal daily operation
General cooling parameters Code: 212
Extended cooling parameters Code: 345
Geneal cleaning parameters Code: 454
Extended cleaning parameters Code: 567
I/O test parameters Code: 0E5
CODE
Control
105871 - WTS-200 11.06.2019 105871 - WTS-200 11.06.2019
Sensor
Sensors other than our standard type are available on request
(different bush from or cable length).
Some of the options are shown here.
Sensor element
Bush material
Bush length
Bush diameter
Cable material
Measurement range
Cable lenght
Protection type
KTY sensor
1.4301(V2A)
40 mm
6.0 mm +/- 0.1
PVC
-10 .. 70° C
Standard 2 metres
IP 65
Operation of the WTS-200 takes place at various levels:
Working level:
… for normal daily operation.
!OFF mode = control unit switched off.
!Start cooling mode.
!Start cleaning mode.
The subsidiary parameters are accessed by entering a code in
order to avoid their accidental alteration.
General cooling parameters
Parameters such as target values, hysteresis etc. are set here.
Extended cooling parameters
For programming the control unit's individual tank-specific cooling func-
tions.
General cleaning parameters
Parameters such as times are set here.
Extended cleaning parameters
For programming the control unit's individual tank-specific cleaning
functions.
I/O test parameters
is used to test the relay as well as the output and input functions.

Page 10 Page 11
T1 T2
°C
Mode
The working level is for normal daily
milk-cooling operation. In cooling
mode, the current milk temperature
as measured is permanently dis-
played.
Button functions
Meaning of LEDs
T1
T2
Mode
Mode
T1 T2
°C
Mode
105871 - WTS-200 11.06.2019 105871 - WTS-200 11.06.2019
Operation of working level Operation of working level
Working level
for normal daily operation
General cooling parameters Code: 212
Extended cooling parameters Code: 345
Geneal cleaning parameters Code: 454
Extended cleaning parameters Code: 567
I/O test parameters Code: 0E5
To change to a different
mode always press the
'OFF/SET' button first.
Active modes are closed
down by pressing the 'OFF'
button.
OFF / Set button
!Switch regulator to STANDBY
!Switch off continuous stirring
!Acknowledge error
!Switch to programming mode (press button for 3 seconds)
COOLING button
in OFF mode = Start cooling
press twice = Bypass coolingstart delay.
in cooling mode Switch between target temperatures T1/T2 =
AGITATOR button
in OFF mode = Continuous stirring
in (press 1 sec.) cooling mode 'Intermediate stirring SHORT'
in cooling mode (press 3 sec.) 'Intermediate stirring LONG'
See also section:
'Intermediate stirring options' on page 7.3
WASHING button
in OFF mode = Start cleaning
During the cleaning process = Special function when
commissioning / Service
See page 23
LED "AGITATOR”
in all mode Agitator is switched on
LED "COMPRESSOR"
continuous Compressor contactor is switched on
blinking Minimum switch-off time (swing
protection) is still active
LED "T1” Target temperature 'T1' active
LED "T2” Target temperature 'T ' active 2
LED “WASH END” continuous cleaning is completed
LED "COOLING MODE"
blinking Cooling start delay is activ
continuous "Cooling mode" is activ
LED "CLEANING MODE"
"Cleaning mode" is activcontinuous